BUILDING CONSTRUCTION HANDBOOK Fourth Edition R

Total Page:16

File Type:pdf, Size:1020Kb

BUILDING CONSTRUCTION HANDBOOK Fourth Edition R I BUILDING CONSTRUCTION HANDBOOK Fourth edition R. Chudley MCIOB and R. Greeno BA (Hons) MCIOB 1 1 [3UTTERWORTH iJE I N E M ANN LLRC MCAST) AMSTERDAM BOSTON HElOEL8ERG LONDON NEW YORK OXFORD PARIS SAN DIEGO SAN FRANCISCO SINGAPORE SYONEY TOKYO CONTENTS Preface Ix Part One General Built environment 3 The structure 6 Primary and secondary elements 13 Construction activities 19 Construction documents 20 Construction drawings 22 Planning application 35 Modular coordination 40 Construction regulations 42 CDM regulations 43 Safety signs and symbols 44 Building Regulations 46 British Standards 52 European Standards 53 CPI System of Coding 54 CI/SfB system of coding 55 Part Two Site Works Site investigations 59 Soil investigation 61 Soil assessment and testing 68 Site layout considerations 75 Site security 78 Site lighting and electrical supply 81 Site office accommodation 85 Materials storage 88 Materials testing 93 Setting out 102 Levelling 106 Road construction 108 Tubular scaffolding and scaffolding systems 116 Shoring systems 128 Part Three Builders Plant General considerations 139 Bulldozers 142 Scrapers 143 Graders 144 Tractor shovels 145 Excavators 146 Transport vehicles 151 Hoists 154 Rubble chutes and skips 156 Cranes 157 Concreting plant 169 Part Four Substructure Foundations-function, materials and sizing 177 Foundation beds 185 Short bored pile foundations 190 Foundation types and selection 192 Piled foundations 197 Retaining walls 215 Basement construction 228 Waterproofing basements 235 Excavations 241 Concrete production 247 Cofferdams 253 Caissons 255 Underpinning 257 Ground water control 266 Soil stabilization and improvement 276 Part Five Superstructure Choice of materials 263 Brick and block walls 284 Gas resistant membranes 303 Arches and openings 308 Windows, glass and glazing 314 Domestic and industrial doors 334 Timber frame construction 345 Reinforced concrete framed structures 347 Formwork 360 Precast concrete frames 36S Structural steelwork 376 Composite timber beams 396 Timber pitched and flat roofs 400 Long span roofs 442 Shell roof construction 448 Rainscreen cladding 468 Panel walls and curtain walling 470 Concrete claddings 473 Thermal insulation 478 Thermal bridging 497 Sound insulation 500 Access for the disabled 505 Part Six Internal Construction and Finishes Internal elements 511 Internal walls 512 Construction joints 517 Partitions 518 Plasters and plastering 523 Dry lining techniques 525 Wall tiling 529 Domestic floors and finishes 531 Large cast insitu ground floors 537 Concrete floor screeds 539 Timber suspended floors 541 Timber beam design 545 Reinforced concrete suspended floors 547 Precast concrete floors 551 Raised access floors 554 Timber, concrete and metal stairs 555 Internal doors 578 Fire resisting doors 584 Plasterboard ceilings 586 Suspended ceilings 587 Paints and painting 591 Joinery production 595 Composite boarding 600 Plastics in building 602 Part Seven Domestic Services Drainage effluents 605 Subsoil drainage 606 Surface water removal 608 Road drainage 611 Rainwater installations 613 Drainage systems 615 Drainage pipe sizes and gradients 624 Water supply 625 Cold water installations 627 Hot water instaliations 629 Cisterns and cylinders 633 Sanitary fittings 636 Single and ventilated stack systems 639 Domestic hot water heating systems 642 Electrical supply and installation 646 Gas supply and gas fires 654 Services-fire stops and seals 658 Open fireplaces and flues 659 Telephone installations 667 Index 669 ... INDEX Access for disabled. 505-7 Basic formwork. 360--1 Access 10 sites. 10 Basic module grid. 40 Accommodation on sites, 76 Basic roof fonns. 400-2 Active earth pressures, 218 Basic types of structure. 8. I1 Adhesives. 395 Basins. 636 Admixtures, 235 Batch mixers. 170-1 Aerated concrete floor units. 551 Baths. 637 Aggregate samples. 95 Bay window. 324 Air lock hopper. 199 Beam and pot floor. 552 Air lest. 623, 641 Beam and slab raft. 195 Alternating tread stair. 562 Beam formwork. 361 - 2 Aluminium alloy in fill panels. 466 Beam to column connection. 368. 380 Anchorages. 373 Beam design: Anchor bars. 351 concrete. 352 3 Anchor slraps. 433 steel. 384- 6 Anglcdozers. 142 timber, 545 6 Angles, 376 Beams. 351. 377 81 Angles of repose, 244 Bearing piles. 197 Angle piling, 263 Beech. 599 Apex hinges, 390 Benchmark. 59. 102. 106-7 A pprovcd Documents, 46-8 Bending moment. 384, 388. 545 Approved inspector. 49 Bentonite. 200. 272- 3 Apron cladding panels. 474 Bib tap. 632 Apron flashing. 664 Binder. 591 Arches, 308- 10 Binders. 351 Asphalt tanking, 237-8 Binding. 130 Attached piers. 286- 7. 289 Birdcage scaffold. 123 Augers. 65 Blockhoard. 600 Automatic level. 106 Block plan. 27. 35 Average U value. 490. 498 Block walls. 515 7 Axial grid. 41 Bloom base. 194 Axonomclric projection. 24 Boarded web girder. 396 Bolcction moulding. 597 Backactcr. 141, 148.231 Ball box, 366. 380 Backguttcr. 664 Bonding bricks, 285-8 Backshore, 130 Bonnet tiles, 410. 414 Balloon frame, 345 Boot lintels, 311 Balustrade. 577 Bore hole. 60. 67 Bargeboard. 439 Borrowed light. 521 Barrel vaulls. 450- 2 Bottom shore. 130 Basement excavation, 228 31 Box beam. 396 Basement insulation. 240 Box caisson. 255 Basements. 228-40 Box. pile foundation. 207 Basic forms of structure. 8. 1I Braced structures. 398 669 Index Breather membrane. 409. 412 3,461 ironmongery, 319 Brick: metal. 318 illfill panels. 465 timber. 316-7 internal walls. 513 Castellated beam. 378 panel walls, 462 Cast insitu diaphragm walls, 233. 272 retaining walls, 2 J 6. 219 Cast insitu pile foundation, 211 strength. 306 Cast-in wall ties. 465 testing. 93 Cast-on fini shes. 477 underpinning, 259 Cavity barrier. 302. 346,4 12 Brick bonding: Cavity closer. 302. 411 2 attached piers. 289 Cavity tray, 310 English bond, 286 Cavity walls, 291 -2. 305 Flemish bond. 287 Cedar, 598 principles. 285 Ceilings: special bonds. 288 plasterboard, 528, 586 Brickwork cladding support. 463 suspended. 587- 90 Bridging of dpc's. 301 Cellular basement. 232 British Standards. 52 Cement grouts. 274 Buckling factor, 357 Central heating. 642-5 Builders plant. 139- 74 Centres. 309 Building control. 49 Certificates of ownership. 35. 39 Building Regulations, 46--9 Channel floor units, 552 Building Regulations application. 51 Channels. 376-7 Building Regulations exemptions. 50 Chemical dpc, 299-300 Built environment. 3 5 Chemical grouts, 274 Built-up roofing fell. 429 Chezy fonnula. 624 Bulk density. 73 Chimney pol. 22. 663 Bulking of sand. 94 Chimneys. 659. 662, 664 Bulld07:er. 142 Chipboard. 536. 601 Bus bar. 648 Ci rcular bay window. 324 Circular column. 355 Cab crane control. 165 Cisterns. 633. 638 Cable sizing. 651 Cl/ srn system. 55 Caissons, 255-6 Cladding panels. 464 Calculated brickwork. 306-7 Clamp vibrator. 174 Calculation of storage space, 89 Classification of piled foundations, 197 Camber arch, 309 Cla y culler, 199 Cantilever: Clear glass. 326 beam,35l Client. 43 foundations, 196 Climbing cranes. 164, 168 retaining wall, 221 Climbing form",ork, 223 scaffold, 125 Closed couple roof. 404 stairs, 566 Codes of Practice. 52 structures, 397 Cofferdams. 253 4 Cap tendons, 372 Coil wall tics. 222 Carbon emissions, 494 Cold bridging. 302. 497- 8 Carbon index, 487. 492, 494 Cold deck. 428 Cartridge fuse, 65 1 Cold water installations. 627 8 Cased pile foundation. 208 Collar roof, 404 Casein adhesive, 395 Column design. 356-7, 387 Casement windows: Col umn formwork. 363 4 670 U'u~x. Column to column weight batching. 250 connection. 367. 381 Concreti ng. 169 Column underpinning, 264 Concreting plant. 169-74 Columns, 355. 376--7. 380-1 Conductivity. 481-2 Combined column foundalion. 194 Conduit and fittings. 649-50 Combined melhod, 484 Conoids. 452 Combustion air. 665 Consolidation of soil. 74 Communicating information: Construction activities. 19 elevations, 26 Construction. Design and Hoor plans. 26 Management Regs .. 43 isometric projection. 24 Construction joints, Ill. 236. 517 orthographic projection. 23 Construction Regulations. 42 -3 perspective projection. 25 Consumer control unit. 648 sketches. 22 Contiguous piling. 27 1 Complete excavation. 230 Continuous column Composite beams. 396 foundations. 193 Composite boarding. 600-1 Contraction joints. I II Composite Hoors, 350. 552 Controlling dimensions. 40 Compositc lintels. 311 Controlling grid. 40 Compositc panel. 466 Controlling lines. 40 Composite piled foundation. 208 9 Cooker circuit cable. 650 Composite timber beams, 396 Coping stones. 215-6. 293 Compound sections. 377 Core drilling. 66 Compressed strawboard. 600 Core structures. 398 Compressible joints. 404, 462, Cored Hoor units. 552 517.571 Cor-ply beam. 396 Concrete: Cornice, 597 admixtures. 235 Corrugated sheet. 438--41 beam design. 352- 3 Coulomb's line. 73 claddings. 464. 473-5 Coulomb's wcdgc theory. 227 column design. 356--7 Counter buncn, 413 floor screcd. 539- 40 Couple roof, 404 mixcrs. 170-1 Cove mouldings, 527. 586 placing. 174 CO\/cr flashing. 664 production. 247- 52 CPI System of Coding. 54 pumps. 173 Cradles. 124 slab design. 352-3 Cranc operation. 165 stairs. 565- 73 Crane rail track, 167 surface finishes. 476 Cranes. 157--68 test cubes. 96 Cranc skips. 169 testi ng. 97- 9 Cranked slab stairs. 565. 57 1 Concrete production: Crawler crane. 161 designated mix. 251 Crcep.370 designed mix. 25 1 Crib relaining wall. 225 materials. 247 Crosswall construction. 343- 4 prescribed mix. 251 Crown hinges. 390 site stomge. 248 Curtain wa lling, 4702 specification. 251 Curved laminated timber. 394 standard mix. 251 Curved tendons. 372 supply. 252 Cut and fill. 241 volume batching. 249 Cylinders. 634 671 Index Dado panel. 597 sliding, 339. 341 Dado rail. 597 types. 335---6 Damp proof course. 296 302 Door set, 581 Damp proof course materials. 297- 8 Dormer window. 402. 427 Damp proof membrane. 296. )03 Double acting hanuners. 213 Datum. 102- 5 Double action noor spring, 585 Datum post, 102. 104 5 Double Hying shore. 132 Dead loads, 29- 30,134, 187 Double glazing. 317, 323. 328 Dead shoring, 128- 9. 134---5 Double hung sush windows, 320-1 Decorali\lc suspended ceiling. 590 Double lap tiling.
Recommended publications
  • Construction Materials
    A Course Material on Construction Materials By Mr. R.Arthanareswaran LECTURER DEPARTMENT OF CIVIL ENGINEERING SASURIE COLLEGE OF ENGINEERING VIJAYAMANGALAM – 638 056 QUALITY CERTIFICATE This is to certify that the e-course material Subject Code : CE6401 Scubject : Construction Materials Class : II Year CIVIL being prepared by me and it meets the knowledge requirement of the university curriculum. Signature of the Author Name: R.Arthanareswaaran Designation: Lecturer This is to certify that the course material being prepared by Mr.R.Arthanareswaran is of adequate quality. He has referred more than five books amont them minimum one is from aborad author. Signature of HD Name: N.Sathish Kumar SEAL Table of Contents Chapter No Title Page No 1 Stones – Bricks – Concrete Blocks 1.1 Characteristics Of Good Building Stone 1 1.2 Testing of Stones 2 1.3 Deterioration Of Stones 8 1.4 Durability of Stones 9 1.5 Preservation of Stones 9 1.6 Selection of Stones 10 1.7 Bricks 10 1.8 Classification of bricks 11 1.9 Manufacturing Of Bricks 13 1.10 Testing of Bricks 19 1.11Fire-Clay Bricks Or Refractory Bricks 22 2 Lime – Cement – Aggregates – Mortar 2.1 Lime Mortar 24 2.2 Composition Of Cement Clinker 25 2.3 Hydration Of Cement 28 2.4 Rate Of Hydration 29 2.5 Manufacture Of Cement 29 2.6 Testing of Cement 32 2.7 Types Of Cement 45 2.8 Testing Of Aggregates 50 3 Concrete 3.1 Concrete 59 3.2 Ingredients 59 3.3 Manufacturing Process 59 3.4 Ready Mixed Concrete (RMC) 66 3.5 Properties of Fresh Concrete: 68 3.6 Properties Of Hardened Concrete 69 3.7 Mix Design
    [Show full text]
  • (12) United States Patent (10) Patent No.: US 8,502,179 B1 Zolli (45) Date of Patent: Aug
    US008502179B1 (12) United States Patent (10) Patent No.: US 8,502,179 B1 Zolli (45) Date of Patent: Aug. 6, 2013 (54) AMAL.GAM OF CRUSHED HAZARDOUS (56) References Cited RADIOACTIVE WASTE, SUCH AS SPENT NUCLEARFUEL RODS, MIXED WITH U.S. PATENT DOCUMENTS COPIOUSAMOUNTS OF LEAD PELLETS, 3,696,636 A 10, 1972 Mille ALSO GRANULATED, TO FORMA MIXTURE 4,102,512 A 7/1978 Lewallyn N.WHICH LEAD GRANULES OVERWHELM 4.338,215 A * 7/1982 Shaffer et al. ................... 588, 15 5,278,879 A 1/1994 McDaniels, Jr. 5,711,016 A * 1/1998 Carpena et al. ................. 588.10 (76) Inventor: Christine Lydie Zolli, Oldwick, NJ (US) 2002/O122525 A1 9/2002 Rosenberger 2006/0233685 A1 * 10, 2006 Janes ................................ 423.3 (*) Notice: Subject to any disclaimer, the term of this 2009/0205363 A1* 8, 2009 de Strulle ........................ 62/533 patent is extended or adjusted under 35 * cited by examiner U.S.C. 154(b) by 175 days. Primary Examiner — Robert Kim (74) Attorney, Agent, or Firm — Hess Patent Law Firm LLC; (21) Appl. No.: 13/173,205 Robert J. Hess (22) Filed: Jun. 30, 2011 (57) ABSTRACT A method, a product and an apparatus Suited to transform (51) Int. C. radioactive waste by forming an amalgam of crushed hazard G2 IF 3/00 (2006.01) ous radioactive waste, such as spent nuclear fuel rods, mixed G2 IF L/12 (2006.01) with copious amounts of lead pellets, also granulated, to form U.S. C. a mixture in which lead granules overwhelm, and which is (52) then further enclosed between solid lead slabs and com USPC ..................
    [Show full text]
  • Parametric Study of Self -Consolidating Concrete
    UNLV Retrospective Theses & Dissertations 1-1-2008 Parametric study of self -consolidating concrete Hamidou Diawara University of Nevada, Las Vegas Follow this and additional works at: https://digitalscholarship.unlv.edu/rtds Repository Citation Diawara, Hamidou, "Parametric study of self -consolidating concrete" (2008). UNLV Retrospective Theses & Dissertations. 2837. http://dx.doi.org/10.25669/kdxy-kly0 This Dissertation is protected by copyright and/or related rights. It has been brought to you by Digital Scholarship@UNLV with permission from the rights-holder(s). You are free to use this Dissertation in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s) directly, unless additional rights are indicated by a Creative Commons license in the record and/or on the work itself. This Dissertation has been accepted for inclusion in UNLV Retrospective Theses & Dissertations by an authorized administrator of Digital Scholarship@UNLV. For more information, please contact [email protected]. PARAMETRIC STUDY OF SELF-CONSOLIDATING CONCRETE by Hamidou Diawara Bachelor of Science National School of Engineering, Mali 1987 Master of Science Southern Illinois University at Carbondale 1998 A dissertation submitted in partial fulfillment of the requirements for the Doctorate of Philosophy Degree in Civil and Environmental Engineering Department of Civil and Environmental Engineering Howard R. Hughes College of Engineering Graduate College University of Nevada, Las Vegas December 2008 UMI Number: 3352169 INFORMATION TO USERS The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleed-through, substandard margins, and improper alignment can adversely affect reproduction.
    [Show full text]
  • Sensitivity Analysis of a Dem Model for the Dry-Mixing of Concrete Constituents in a Screw-Conveyor
    MASTER THESIS SENSITIVITY ANALYSIS OF A DEM MODEL FOR THE DRY-MIXING OF CONCRETE CONSTITUENTS IN A SCREW-CONVEYOR AUTHOR Raïsa N. Roeplal Faculty of Engineering Technology, Department of Mechanical Engineering Chair of Thermal &Fluid Mechanics EXAMINATION COMMITTEE Chairman: prof. S. Luding Supervisor: dr. T. Weinhart External member: prof. dr. ir. C. H. Venner External member: I. Vrooijink, MSc. DOCUMENT NUMBER ME - 325 DATE October 31st, 2019 S ENSITIVITY ANALYSIS OF A DEM MODELFORTHEDRY- MIXING OFCONCRETECONSTITUENTSINASCREW- CONVEYOR Author Raïsa N. Roeplal University of Twente Faculty of Engineering Technology Department of Mechanical Engineering, Thermal & Fluid Engineering, Multi-Scale Mechanics group ID-number: s1817094 e-mail: [email protected] Graduation Committee Chairman: prof. Stefan Luding Supervisor: dr. Thomas Weinhart External member: prof. dr. ir. C. H. Venner External member: I. Vrooijink, MSc. Report number: 325 October 21, 2019 This is a blank page PREFACE PREFACE This thesis embodies the work I have done to conclude my ME-Master studies at the University of Twente. Throughout my time at the UT I have learned a lot –academically, socially, mentally– and have gotten to know many people who have supported me and, in this way, have also contributed to this work. I would like to take this opportunity to share my experiences and thank them. First of all, to those who made this work possible: Ivo Vrooijink, dr. Thomas Wieinhart and prof. Stefan Luding. In the second year of my studies, I became interested in concrete printing technologies and decided to focus on this field for my thesis. During my search for a graduation project I came into contact with Ivo, who supervises the concrete printing project “Konkreet” at the Saxion University of Applied Sciences.
    [Show full text]
  • Prescriptive Mixture Design of Self-Consolidating Concrete
    PRESCRIPTIVE MIXTURE DESIGN OF SELF-CONSOLIDATING CONCRETE NDOT RESEARCH Agreement No: P077-06-803 Report Submitted to Nevada Department of Transportation Research Division ATTN: Dr. Tie He 1263 S. Stewart Street Carson City, NV 89712 By Nader Ghafoori, Ph.D., P.E., Professor and Chairman and Hamidou Diawara, MSc, Doctorate student and Research assistant University of Nevada, Las Vegas Civil and Environmental Engineering Department 4505 Maryland Parkway Box 454015 Las Vegas, Nevada 89154-4015 Phone: (702)895-3701 Fax: (702)895-3936 May 2008 ABSTRACT OF THE REPORT PRESCRIPTIVE MIXTURE DESIGN OF SELF-CONSOLIDATING CONCRETE The research investigation presented herein was intended to study the influence of parameters such as aggregate size, admixture source, hauling time, temperature and pumping on the fresh and hardened properties of three distinct groups of self- consolidating concretes (SCC). Within each group, the selected self-consolidating concretes were made with a constant water-to-cementitious materials ratio, a uniform cementitious materials (cement and fly ash) content, and a constant coarse-to-fine aggregate ratio that provided the optimum aggregate gradation. Three coarse aggregate sizes (ASTM C 33 #8, #7, and #67) obtained from two different quarries were investigated. Four sources of polycarboxylate-based high range water reducing admixtures (HRWRA), along with their corresponding viscosity modifying admixtures (VMA), were used. All raw materials were evaluated for their physico-chemical characteristics. The investigation presented
    [Show full text]
  • Factors Affecting Workability
    UNIT 3 PROPERTIES OF FRESH CONCRETE Fresh concrete - Workability - Factors affecting workability - Measurement of workability - Segregation Bleeding - Concrete manufacturing - Convention - Ready mix and Advantage of Ready mix - Finishing. Compaction Curing - Strength of concrete - Elasticity - Creep - Shrinkage - elastic behavior of concrete - Durability of concrete Factors affecting strength of concrete and Durability of concrete - Cracks in concrete - Chemical attacks-carbonation. Durability of concrete: effect of Admixtures on properties of concrete causes of concrete deterioration, alkali aggregate reaction, deterioration by chemical actions, concrete in marine environment What is concrete? Concrete is one of the most commonly used building materials. Concrete is a composite material made from several readily available constituents (aggregates, sand, cement, water). Concrete is a versatile material that can easily be mixed to meet a variety of special needs and formed to virtually any shape. Concrete solidifies and hardens after mixing with water and placement due to a chemical process known as hydration. The water reacts with the cement, which bonds the other components together, eventually creating a stone-like material. In order to increase the strength of concrete chemical admixtures are also added. Chemical admixtures like; 1. Super plasticizers – Salts of organic sulphonates Ligno sulphonates, Sulphonated melamine formaldehyde (SMF), Sulphonated naphthalene formaldehyde (SNF) Polycarboxylic ether (PCE) 2. Air-entraining agents - Natural wood resins , Synthetic detergents and Salts of petroleum acids) , 3. Accelerators - Inorganic Calcium chloride, Formates, Nitrates Thiocyanates Silicates Aluminates 4. Retarders - Organic Chemicals- Carbohydrates Hydroxycarboxylic acids and salts Phosphates Few Admixtures can be classified by function as follows: 1. Air-entraining admixtures 2. Water-reducing admixtures 3. Plasticizers 4.
    [Show full text]
  • CONCRETE TECHNOLOGY RCI4D002 3-0-0 B.Tech 4Th SEMESTER CIVIL Branch
    CONCRETE TECHNOLOGY RCI4D002 3-0-0 B.Tech 4th SEMESTER CIVIL Branch Prepared by Rajesh Kumar Sahu Sr. Lect Dept.of Civil Engineering P.K.A.C.E., Bargarh MODULE I CEMENT Cement is a binder, a substance that sets and hardens and can bind other materials together. Cements used in construction can be characterized as being either hydraulic or non-hydraulic, depending upon the ability of the cement to be used in the presence of water. Non-hydraulic cement will not set in wet conditions or underwater, rather it sets as it dries and reacts with carbon dioxide in the air. It can be attacked by some aggressive chemicals after setting. Hydraulic cement is made by replacing some of the cement in a mix with activated aluminum silicates, pozzolana, such as fly ash. The chemical reaction results in hydrates that are not very water-soluble and so are quite durable in water and safe from chemical attack. This allows setting in wet condition or underwater and further protects the hardened material from chemical attack (e.g., Portland cement). Uses:- Cement mortar for Masonry work, plaster and pointing etc. Concrete for laying floors, roofs and constructing lintels, beams, weather- shed, stairs, pillars etc. Construction of water, wells, tennis courts, septic tanks, lamp posts, telephone cabins etc. Making joint for joints, pipes, etc. Manufacturing of precast pipes, garden seats, flower posts, etc. Preparation of foundation, water tight floors, footpaths, etc. ORDINARY PORTLAND CEMENT:- Ordinary Portland cement is the most common type of cement in general use around the world. This cement is made by heating limestone (calcium carbonate) with small quantities of other materials (such as clay) to 1450°C in a kiln, in a process known as calcinations, whereby a molecule of carbon dioxide is liberated from the calcium carbonate to form calcium oxide, or quicklime, which is then blended with the other materials that have been included in the mix.
    [Show full text]
  • Concrete Mixer - Wikipedia Page 1 of 6
    Concrete mixer - Wikipedia Page 1 of 6 Concrete mixer From Wikipedia, the free encyclopedia A concrete mixer (often mistakenly called a cement mixer) is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete. A typical concrete mixer uses a revolving drum to mix the components. For smaller volume works portable concrete mixers are often used so that the concrete can be made at the construction site, giving the workers ample time to use the concrete before it hardens. An alternative to a machine is mixing concrete by hand. This is usually done in a wheelbarrow; however, several companies have recently begun to sell modified tarps for this purpose. The concrete mixer was invented by Columbus industrialist Gebhardt Jaeger.[1] Contents ◾ 1 Industrial mixers ◾ 2 Trucks and trailers ◾ 2.1 Concrete mixing transport trucks ◾ 2.2 Concrete mixer trailers ◾ 2.3 Metered concrete trucks ◾ 3 On-site and portable concrete mixers ◾ 4 Self loading Concrete Mixers ◾ 5 In fiction ◾ 5.1 Television ◾ 6See also ◾ 7 References Industrial mixers Today's market increasingly requires consistent homogeneity and short mixing times for the industrial production of ready-mix concrete, and more so for precast/prestressed concrete. This has resulted in refinement of mixing technologies for concrete production. Different styles of stationary mixers have been developed, each with its own inherent strengths targeting different parts of the concrete production market. The most common mixers used today fall into 3 categories: ◾ Twin-shaft mixers, known for their high intensity mixing, and short mixing times. These mixers are typically used for high strength concrete, RCC and SCC, typically in batches of 2–6 m3 (2.6 –7.8 cu yd).
    [Show full text]
  • Examining the Effects of Mixer Type and Temperature on the Properties of Ultra-High Performance Concrete
    EXAMINING THE EFFECTS OF MIXER TYPE AND TEMPERATURE ON THE PROPERTIES OF ULTRA-HIGH PERFORMANCE CONCRETE MBTC-3012 By Andrew M. Tackett & W. Micah Hale The contents of this report reflect the views of the author, who is responsible for the facts and accuracy of the information presented herein. This document is disseminated under the sponsorship of the Department of Transportation, University Transportation Centers Program, in the interest of information exchange. The U.S. Government assumes no liability for the contents or use thereof. ABSTRACT Ultra-High Performance Concrete (UHPC) is a highly advanced material that has been created as a result of many years of concrete research and development. UHPC addresses a number of concerns that plague most concrete types by taking advantage of today’s latest technology in order to produce this innovative product. Although UHPC is known for producing many beneficial qualities for concrete users, because of the unique makeup of the material, there are some areas that remain unexplored. For instance, the mixer typically specified to batch UHPC is a high shear/energy mixer (e.g. pan). Currently, little information is known as to whether a beneficial or negative impact may be experienced in concrete properties (e.g. flow, strength, MOE) when a lower shear/energy mixer (e.g. drum/ready-mix truck) is used. Another point of interest that has not been explored is the effect on fresh concrete temperature produced when the dry constituent mixing materials (also referred to as premix), such as portland cement, aggregate, silica fume, and ground quartz, are placed at some specific temperature and batched with ice as a replacement for mixing water.
    [Show full text]
  • Sri Vidya College of Engineering & Technology Lecture Notes
    SRI VIDYA COLLEGE OF ENGINEERING & TECHNOLOGY LECTURE NOTES Chapter 3 Concrete Concrete – Ingredients – Manufacturing Process – Batching plants – RMC – Properties of fresh concrete – Slump – Flow and compaction Factor – Properties of hardened concrete – Compressive, Tensile and shear strength – Modulus of rupture – Tests – Mix specification – Mix proportioning – BIS method – High Strength Concrete and HPC – Self compacting Concrete – Other types of Concrete – Durability of Concrete. 3.1 Concrete Concrete is a mixture of cement (11%), fine aggregates (26%),coarse aggregates (41%) and water (16%) and air (6%). Cement Powder Cement + Water Cement Paste Cement Paste + Fine Aggregate (FA) Mortar Mortar + Coarse Aggregate (CA) Concrete Portland cement, water, sand, and coarse aggregate are proportioned and mixed to produce concrete suited to the particular job for which it is intended. Concrete a composite man- made material, is the most widely used building material in the construction industry. It consists of a rationally chosen mixture of binding material such as lime or cement, well graded fine and coarse aggregates, water and admixtures (to produce concrete with special properties). In a concrete mix, cement and water form a paste or matrix which in addition to filling the voids of the fine aggregate, coats the surface of fine and coarse aggregates and binds them together. The matrix is usually 22-34% of the total volume. Freshly mixed concrete before set is known as wet or green concrete whereas after setting and hardening it is known as set or hardened concrete. 3.2 Ingredients The concrete consisting of cement, sand and coarse aggregates mixed in a suitable proportions in addition to water is called cement concrete.
    [Show full text]
  • UNIT 5 – CONSTRUCTION EQUIPMENT 2 MARKS 1. What Is
    UNIT 5 – CONSTRUCTION EQUIPMENT 2 MARKS 1. What is meant by dredging? (April/May 2017,Nov/Dec2015) Dredgers are used for excavation from riverbed, lake or sea for purpose of deepening them. Dredging is an important operation in navigation canals, harbours, dams etc. 2. How to calculate output of scraper (April/May 2017) Scrapers can be very efficient on short hauls where the cut and fill areas are close together and have sufficient length to fill the hopper. The heavier scraper types have two engines ("tandem powered"), one driving the front wheels, one driving the rear wheels, with engines up to 400 kW (536 hp). Multiple scrapers can work together in a push-pull fashion but this requires a long cut area. 3. List out equipment for earthmoving operations (April/May 2019, April/May 2018) . Excavators . Backhoe Loaders . Bulldozers . Skid-Steer Loaders . Trenchers 4. Define Dredging (April/May 2018, 2019,Nov/Dec 2015) Dredgers are used for excavation from riverbed, lake or sea for purpose of deepening them. Dredging is an important operation in navigation canals, harbours, dams etc. 5. Difference between single and double acting hammer (Nov/Dec 2015) A single-acting steam hammer is raised by the pressure of steam injected into the lower part of a cylinder and drops under gravity when the pressure is released. With the more common double-acting steam hammer, steam is also used to push the ram down, giving a more powerful blow at the die. 6. What are the factors influencing compaction(Nov/Dec2016) Moisture content. Types of soil. Amount of compaction.
    [Show full text]
  • Consolidating Concrete
    NDOT Research Report Report No. 077-06-803 Prescriptive Mixture Design of Self- Consolidating Concrete April 2009 Nevada Department of Transportation 1263 South Stewart Street Carson City, NV 89712 Disclaimer This work was sponsored by the Nevada Department of Transportation. The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the State of Nevada at the time of publication. This report does not constitute a standard, specification, or regulation. Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. RDT 09-077 4. Title and Subtitle 5. Report Date Prescriptive Mixture Design of Self-Consolidating Concrete May 2008 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Nader Ghafoori, Hamidou Diawara 9. Performing Organization Name and Address 10. Work Unit No. University of Nevada, Las Vegas 11. Contract or Grant No. Civil and Environmental Engineering Department 4505 Maryland Parkway, Box 454015 P077-06-803 Las Vegas, Nevada 89154-4015 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Nevada Department of Transportation Final Report 1263 S. Stewart Street Carson City, Nevada 89712 14. Sponsoring Agency Code 15. Supplementary Notes 16. Abstract This research studied the influence of aggregate size, admixture source, hauling time, temperature and pumping on the fresh and hardened properties of three distinct groups of self-consolidating concretes (SCC.) The first phase of investigation compared dosages of admixtures and properties of the variants.
    [Show full text]