Fresh properties of self-compacting concrete integrating coal bottom ash as a replacement of fine aggregates

Hamzah, Ahmad Farhan and Wan Ibrahim, Mohd Haziman and Jamaluddin, Norwati and Putra Jaya, Ramadhansyah and Zainal Abidin, Norul Ernida (2015) Fresh properties of self-compacting concrete integrating coal bottom ash as a replacement of fine aggregates. In: 2nd International Materials, Industrial & Manufacturing Engineering Conference (MIMEC 2015), 4-6 February 2015, Bali Nusa Dua Convention Center, Bali, Indonesia .

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Abstract

The influence of coal bottom ash on fresh properties of self-compacting concrete (SCC) were presented in this paper. Self-compacting concrete mixtures were produced by 0.40 water/powder ratio and coal bottom ash as a replacement of fine aggregates in varying percentages of 0%, 10%, 15%, 20%, 25% and 30%. The fresh concretes were tested for the key workability belongings of self-compacting concrete such as passing and filling abilities and segregation resistance. The fresh properties were investigated by slump flow; T500 spread time, sieve segregation and L-box test. It was found that the slump flow decreased whereas the T500 spread time increased with higher coal bottom ash content. The L-box blocking ratios changed from 0.92 to 0.65 and were mostly showed satisfactory blocking ratio. The presence of coal bottom ash improved the stability of SCC mixture and the segregation index obtained from sieve test reduced with greater bottom ash content. It can be concluding that the filling and passing ability of SCC decreased when the amount of coal bottom ash content increased. In addition, the segregation resistance index decreased with higher coal bottom ash content

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:self-compacting concrete; coal bottom ash; fresh properties
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions:Faculty of Civil and Environmental Engineering > Department of Structural and Material Engineering
ID Code:6821
Deposited By:Mrs. Nurhayati Ali
Deposited On:11 Jun 2015 12:20
Last Modified:11 Jun 2015 12:20

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