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Mechanical Properties of Glass Powder and Metakaolin in Concrete

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Mechanical Properties of Glass Powder and Metakaolin in Concrete ISSN 2321 3361 © 2020 IJESC Research Article Volume 10 Issue No.8 Mechanical Properties of Glass Powder and Metakaolin in Concrete Mukund Kumar1, Ajay Kumar Singh2 M.Tech Scholar1, Assistant Professor2 Department of Civil Engineering SSTC-SSGI, Bhilai, India Abstract: The production of Portland cement releases significant amount of greenhouse gas, One ton of cement clinker production releases approximately one ton of carbon dioxide. Today many researches are going to utilize mineral admixtures for the replacement of cement, fine aggregate and coarse aggregate using industrial waste like Metakaolin, Fly ash, GGBS, copper sag and glass. Glass has a unique property; it can be recycled many times without changing its chemical properties. Million tones of glass discarded every year from houses and industries and for dumping they need grounds. The addition of glass powder and metakaolin increases the durability properties of concrete. The use of metakaolin and glass powder will give us advantage to save natural resources and in addition to that it will be economical to use it in concrete. In this research work the metakaolin was used to replace the cement in 10%, 20% and 30% and glass powder was used to replace the fine aggregate in 10%, 20%, 30% and 40%. The compressive strength test was carried out on specimen for 7 days and 28 days, compressive strength, split tensile strength and durability test for 28 days. Keywords: Glass Powder, Metakaolin, Compressive Strength, Split Tensile Strength, Flexural Strength, Durability Test. I. INTRODUCTION used. Sand passing through IS 4.75mm Sieve was used for casting all the specimens. The curosity of the concrete researchers in using waste or recycled materials in concrete is increasing because of the Corse Aggregate: emphasis placed on sustainable construction. The waste glass Locally available crushed blue granite stones conforming to from in and around the shops and houses is disposed as graded aggregate of nominal size 20 mm as per IS: 383 – landfill waste. But the demand in the construction industry is 1970.Crushed granite aggregate with specific gravity of 2.77 increasing every day, the utilization of river sand as fine was used. aggregate leads to detoriation of natural resources, falling of ground water table. Attempts have been made in using crushed Glass Powder: glass as fine aggregate in the replacement of sand. Glass powder is finely ground glass. These fine glass particles A major concern regarding the use of glass in concrete is the remind you of talcum powder. Use extreme care when chemical reaction that take space between the silca – rich glass handling this dry powder pigment to prevent breathing the particle and the alkali in pore solution of concrete, which is dust particles. Make sure you wear a respiratory mask when called Alkali – Silicate reaction can be very detrimental to the working with this powder, preferably one that is NIOSH stability of concrete, unless appropriate precautions are taken approved. Check to see that the powder has the same COE as to minimize its effects. Metakaolin can be used as a concrete your other fusing glass. integral, swapping part of the cement content ever since it has pozzolanic property. Metakaolin: Metakaolin manufactured from pure raw material to strict The use of metakaolin as a partial cement replacement quality standards. Metakaolin is a high quality pozzalonic material in mortar and concrete has been considered widely in material, which when blended with Portland cement improves past few years. Efforts have been made in using crushed glass the strength and of concrete. Metakaolin removes chemically as fine aggregate in the replacement of sand and Metakaolin as reactive calcium hydroxide from the hardened concrete. a replacement for cement to get the performance of concretes containing glass powder and metakaolin and compare it with Water: the performance of conventional concrete. Casting and curing of specimens were done with the potable II. MATERIAL USED water that is available in the college premises. Cement: Mix Design: Ordinary Portland cement, 53 Grade conforming to IS: 269 – 1976. Ordinary Portland cement, 53 Grade was used for Mix design carried out for M40 grade of concrete by IS casting all the Specimens. 10262:2009, resulting to a mix proportion of 1: 1.30: 2.52 with water cement ratio of 0.40. The replacement of cement by Fine Aggregate: Metakaolin was 0% to 30% and replacement of fine aggregate Locally available river sand conforming to Grading zone II of by Glass powder was 0% to 40% both was replaced by 10% IS: 383 –1970. Clean and dry river sand available locally was each. IJESC, August 2020 27177 http:// ijesc.org/ III. EXPERIMENTAL ANALYSIS 10% with metakaolin and fine aggregate replaced with the 10% glass powder. Further increment of the metakaolin and glass COMPRESSIVE STRENGTH TEST powder decreased the compressive strength of the specimens. Table.2. Compressive strength of the specimens after 28 Table.1. Compressive strength of the specimens after 7 days days S.No. Percentage Percentage Compressive S.No. Percentage Percentage Compressive Replacement Replacement Strength Replacement Replacement Strength (MPa) of Cement of Fine (MPa) of Cement of Fine Aggregate Aggregate MIX 0 0 35.72 MIX 1 0 0 50.34 1 MIX 2 0 10 50.97 MIX 0 10 36.63 MIX 3 0 20 51.12 2 MIX 0 20 37.42 MIX 4 0 30 50.30 3 MIX 5 0 40 49.32 MIX 0 30 36.17 MIX 6 10 10 54.28 4 MIX 7 10 20 53.91 MIX 0 40 35.24 5 MIX 8 10 30 48.82 MIX 10 10 39.52 MIX 9 10 40 49.84 6 MIX10 20 10 51.24 MIX 10 20 36.17 MIX 11 20 20 48.20 7 MIX 10 30 34.97 MIX 12 20 30 46.42 8 MIX 13 20 40 46.67 MIX 10 40 34.14 MIX 14 30 10 46.92 9 MIX 20 10 35.28 MIX 15 30 20 48.54 10 MIX 16 30 30 45.72 MIX 20 20 31.29 MIX 17 30 40 43.27 11 MIX 20 30 28.23 12 MIX 20 40 26.42 13 MIX 30 10 27.20 14 MIX 30 20 27.92 15 MIX 30 30 25.20 16 MIX 30 40 23.82 17 Figure. 2. Compressive Strength Variation for 28 days From the results, at 28 days, the plain concrete mix specimen attained 50.34 MPa. At the replacement of 10% of cement and fine aggregate with metakaolin and glass powder attained maximum compressive strength 54.28 MPa. Further increase of metakaolin and glass powder showed decrease in compressive strength of the specimens. Figure.1. Compressive Strength Variation for 7 days SPLIT TENSILE STRENGTH TEST From the results, at 7 days the specimen attained the maximum The split tensile strength test was carried out in a cylindrical compressive strength 39.52 MPa, when cement is replaced by specimen after 28 days. IJESC, August 2020 27178 http:// ijesc.org/ Table.3. Split Tensile strength of the specimens after 28 days S.No. Percentage Percentage Split Replacement Replacement Tensile of Cement of Fine Strength Aggregate (MPa) MIX 1 0 0 3.14 MIX 2 0 10 3.32 MIX 3 0 20 3.46 MIX 4 0 30 2.97 MIX 5 0 40 2.86 MIX 6 10 10 3.47 MIX 7 10 20 2.72 MIX 8 10 30 2.64 MIX 9 10 40 2.84 From the results, at 28 days, the maximum flexural strength MIX10 20 10 2.42 attained by the specimen at 10% replacement 12.32 MPa. The MIX 11 20 20 2.34 increment beyond this had showed decrement in the specimens. MIX 12 20 30 2.19 DURABILITY TEST MIX 13 20 40 2.14 MIX 14 30 10 2.73 The cubes were cured for 28 days, after that the cubes were MIX 15 30 20 2.78 immersed in H2SO4 for 28 days and after that they were tested MIX 16 30 30 2.13 again. MIX 17 30 40 2.09 Table.5. Durability of the specimens after 28 days S.No. Percentage Percentage Compressive Replacement Replacement Strength of Cement of Fine (MPa) Aggregate MIX 1 0 0 46.17 MIX 2 0 10 46.37 MIX 3 0 20 46.95 MIX 4 0 30 45.91 MIX 5 0 40 45.42 Figure.3. Split Tensile Strength Variation for 28 days MIX 6 10 10 49.72 From the results, At 28 days, the replacement of 10% each of MIX 7 10 20 48.67 cement and fine aggregate with metakaolin and glass powder MIX 8 10 30 45.17 attained the maximum tensile strength 3.47 MPa. Further MIX 9 10 40 46.13 replacement caused the decrease in the split tensile strength. MIX10 20 10 46.24 MIX 11 20 20 45.20 FLEXURAL STRENGTH TEST MIX 12 20 30 43.24 MIX 13 20 40 43.09 Table.4. Flexural strength of the specimens after 28 days MIX 14 30 10 42.82 S.No. Percentage Percentage Flexural MIX 15 30 20 45.63 Replacement Replacement Strength MIX 16 30 30 42.30 of Cement of Fine (MPa) MIX 17 30 40 39.27 Aggregate MIX 1 0 0 9.23 MIX 2 0 10 10.40 MIX 3 0 20 11.55 MIX 4 0 30 10.27 MIX 5 0 40 9.92 MIX 6 10 10 12.32 MIX 7 10 20 11.97 MIX 8 10 30 11.47 MIX 9 10 40 11.09 MIX10 20 10 11.37 MIX 11 20 20 11.17 MIX 12 20 30 10.96 MIX 13 20 40 10.72 Figure.5.
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