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L, L, C0 Ntents Volume 16 No 3 August 2013 Ron S Message from Gill Owens the Editor

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L, L, C0 Ntents Volume 16 No 3 August 2013 Ron S Message from Gill Owens the Editor I I L, L, c0 ntents Volume 16 No 3 August 2013 ron s Message from Gill Owens the editor ........ ........ ... • .... ... • ........ 2 Art and Architecture The theatre of 3D concrete ........................................ 4 Technical New cement cleans and enables 100% recycling of spent motor oils. ... 8 Demonstrating the effectiveness of the new cement . 9 Dr Chota Mota Ia interchange lands top SAlCE award ................... 10 Fulton Awards recognition for Dr Chota Mota Ia bridge .................. 12 The Concrete Institute discusses the six main reasons why floors fail ........ 13 Standalone concrete repair division established ........................ 15 Top 10 tips for choosing a concrete flooring contractor . 16 Precast Concrete Zambian roads to be upgraded with concrete block paving ..... ........ 18 Exciting new paving finishes soon available ........................... 19 Doing it yourself in British Columbia . .............................. 20 Now it's concrete cabins for photovoltaic farms ............ .... .... ... 22 Precast concrete poles replace vandalised steel poles . .. .. .. ... .... 24 CBP used in Shovagakula Paving Project ................... • . ... ..... 25 Mandela Barlow Street transformed ................................. 26 Women in Costruction Awards honour Women in Construction .......... ....... ........ 27 Talent transcends gender at Lafarge ................................. 28 Achieving women at Ash Resources .. .............................. 30 Realising women's untapped potential .......... .... .... .... .... ... 30 Products & Services Innovative cement gets sleeper contract steaming ahead ................. 32 Simply 'plug and poke' for great concrete . ..... .. ..... .... ... .... 34 Push to specify readymix concrete . 36 Sika launches new premises in Port Elizabeth .......................... 37 Accelerators bring benefits to winter concreting ....................... 38 A new in-situ waterproofing system from Mapei ....................... 39 a.b.e Construction Chemicals opens a dustless powder plant ............. 40 Diamond Products launches the Titan wall saw ...................... 41 Roof tile machine designed specifically for Africa launched by PMSA ........ 42 New 'green' non-chloride accelerator from Chryso S.A. .. ... .. ..... .... 43 Hydrophobic admixtures improve durability and impermeability ............ 44 Swiss watches inspire accurate moisture measurement .................. 45 NPC goes back to their roots .. .... .............................. 46 News For your diary .... .. .. .... .. .. .... .. .. .... ... .. ... .... 48 100 years of Slurry .................................... • . ... ..... 49 Cover picture: The Concrete Institute heralds a new dispensation ...................... 50 Lift and staircase US $2-million sustainable construction competition .. ... .... ... .... 51 shaft, Ribadeo, Galicia, New PPC Builder's App will make building easy. 52 Spain. Black-pigmented Best Projects Awards 2013- enter now .............................. 52 concrete cast against MBA North appoints new executive director .......................... 53 timber-lined formwork., Solidia Technologies wins R&D 100 Award ....... .... .... .... .... ... 54 See story on page 4. Free - new title on durability . .. .. .... .. .. .. ... .. ... .... 54 Photograph courtesy Trending videos from Concrete. TV .... .. • ........ • . ... .... • . ... ..... 55 Daniel van der Merwe. THE LAST WORD . ............................................... 56 Concrete Trends is the official quarterly journal of the African Cement & Concrete Industry 7 Bell Crescent, Westlake Business Park, Tokai • PO Box 30875, Tokai, 7966, SA • Tel +27 21 700 4300 • Fax +27 21 702 4340 PUBLISHING DIRECTOR: Errol Bryce email [email protected] hypenica EDITOR: Gill Owens e-mail [email protected] .za ADVERTISING: Anne Colley Tel 082 321 8312 e-mail [email protected] DESIGN, LAYOUT & PRODUCTION : Elise Jacobs email [email protected] -~- REPRODUCTION & PRINT: CTP Printers Cape Town ~ lll]l~~~ . Hypenica accepts no responsibility for any opinions or statements in this publication . Consequently no person connected with the publication of this journal will be liable for any loss or damage sustained by any reader as a result of action following any statements or opinions expressed herein . ISSN 1560-2710 It's time for Africa Just as Africa is seen as the last frontier of investment for many peaceful transitions of government through electoral nations across the world (and especially China), so more South processes, most recently in Kenya, but also in Ghana, Nigeria African companies are beginning to look at the countries north and Zambia, to name a few. With significant improvements of our borders for new business opportunities. in macroeconomic and political stability, the time for Africa is Vis Shankar, group executive director and CEO ofStandard now," he concluded. Chartered EMEA, talked about the 'climate' at a recent And the interest is mutual - our neighbours are also conference: "It's time for Africa. Improved stability and a rising looking to South Africa and are keen to set up liaisons with consumer class are shaping the country's revived fortunes. At local businessmen. This was amply demonstrated by the large the Milken Institute Global Conference 2013 in Los Angeles, African contingent that attended Hypenica's hugely successful for the first time in its 16-year existence, four panels were Totally Concrete Expo in June. devoted to discuss African opportunities and challenges." Concrete Trends is also following their lead and is aiming Shankar explained, "A decade ago, perceptions of Africa to broaden the scope of its coverage to include more projects were extremely negative. Today there is a buzz about Africa and in our neighbouring countries. I would urge you to contact me the gains are tangible. The continent has managed compound if you are involved in any interesting initiatives north of our real GOP growth of 5, 1% in the last decade, second only to borders. We'd really love to hear from you. Emerging Asia. More than half the world's fastest growing countries are there. ''Trade and investment links between Africa and the rest of Gill Owens, Editor the world are clearly on the uptrend. Governance has improved significantly over the past two decades as evidenced by the ~ +27 21 700 4300 Ia [email protected] Ia [email protected] Gold sponsor 8 c0112e SPOOS«S Host mecf~a Partoers: Orosnised b>t: SAIMBNA 31 October- 2 November 2013, CTICC, CapeTown CAPE CONSTR TIO EXPO Access the Western Cape's leading building and construction professionals, property developers and investors in need of technology, materials, services and equipment to perfect project delivery. Working together to build the Western Cape's future The Cape Construction Expo is the only building and construction forum exclusively for the Western Cape. Thousands of construction professionals such as architects, engineers, contractors, local aut horities, government officials, investors and suppliers, w ill be there to share viable project tenders, evaluate technology and material options and source innovative equipment that w ill boost ROI on their major projects. • Interactive expo featuring speciality zones w ith the latest products, tools and technologies • Accredited strategic and technical workshops • Awards presented by Cape Business News • Product demos • Site visits • Prizes and giveaways • Recruitment comer Host m edia partners CAPE Business News CONCI\W Technology Partner Organised by ...... ;.UI..O.OJJN.G 1)mber to touch.......work hypenica Umited exhibition booths. a nd s ponsorship opportunities rema·r To secure your participation at the only construction event in the Western Cape, contact: 1111 [email protected] or [email protected] (. +27 21 700 4300 0 CapeConstnu;tionExpo Cl Cape ConstN<tion / a CT_ConstN<tion II CapeConstN<tionExpo www.cape-construction.co.za art and architecture The theatre of 3D concrete By Daniel van der Merwe, Architect at PPC Introduction • Surface texture (formwork panels or subsequent Chiaroscuro (Italian for light-dark) in architecture is the surface treatment) use of bold contrasts between light and dark achieved by • Formation of joints between formwork elements manipulating the design of three-dimensional indentations on • Formwork ties and tie holes (position, formation and the surfaces of building façades; by playing with solids and making good) voids, or with shadow-casting projections and recesses. This • Subdivision of the surface (dimensions of formwork gives the building an added aesthetic dimension, making elements, formwork textures, pattern of joints and the architecture theatrical, with the building’s appearance arrangement of formwork tie holes etc) changing through the day depending on the sun’s angle and • Joints (position, direction, width and details) intensity. Louis Kahn, the famous American architect, always • Detailing of corners and edges (e.g. keen, chamfered) incorporated natural light into his structures and believed that • Colouring (selected cements, aggregates, pigments, great architecture is about manipulating the endlessly varying glazing, paints) qualities of light. • Surface finish of areas not cast against formwork Textured concrete Concrete’s ability to be moulded, to reflect the surface qualities of its formwork and surface treatments, and to be tooled post shuttering, enables it to provide a wider range of architectural finishes than any other building
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