Effect of cement and fine aggregate replacement with Alccofine and Bottom ash on mechanical properties of concrete
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International Journal of Engineering Trends and Technology (IJETT) |  |
| © 2016 by IJETT Journal | ||
| Volume-32 Number-4 |
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| Year of Publication : 2016 | ||
| Authors : Abhishek Sachdeva, Gobind Khurana |
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| DOI : 10.14445/22315381/IJETT-V32P232 |
Citation
Abhishek Sachdeva, Gobind Khurana"Effect of cement and fine aggregate replacement with Alccofine and Bottom ash on mechanical properties of concrete", International Journal of Engineering Trends and Technology (IJETT), V32(4),165-170 February 2016. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
The present investigation is planned to study the properties of concrete at fresh and hardened stage containing both Alccofine as a partial replacement of cement as well as coal bottom ash as a partial replacement of fine aggregates in concrete together in different combinations. An experimental programme is planned in which controlled concrete (MB1 mix) of grade M40 is designed, casted and tested for compressive strength after 28-days of curing. Three different mixes were prepared containing 20% (MB2 mix), 30% (MB3 mix) and 40% (MB4 mix) bottom ash as partial replacement of fine aggregates. From the workability and compressive strength test results, it was observed that both the workability and compressive strength reduced much for MB4 mix. Therefore, to study the effect of Alccofine as a partial replacement of cement, MB4 mix was selected. The cement was partially replaced by Alccofine by 5% (MB4AL5 mix), 10% (MB4AL10 mix), 15% (MB4AL15 mix) and 20% (MB4AL20 mix) along with the 40% bottom ash as a partial replacement of fine aggregate. Based on the analysis of test results, a reduction in workability and strength was observed by partially replacing fine aggregates with coal bottom ash. Workability, compressive strength and flexural strength improved in the concrete mix containing bottom ash as a partial replacement of fine aggregates along with the incorporation of Alccofine as a partial replacement of cement in concrete. The workability is decreased with the increase in the replacement level of fine aggregates with bottom ash but workability improved on partially replacing cement with alccofine upto 15% in the mix already containing bottom ash as a partial replacement of fine aggregates, after which it decreased. A high strength concrete was developed by using Alccofine as a partial replacement to cement along with the partial replacement of fine aggregates with bottom ash.
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Keywords
Fine aggregates, coal bottom ash, cement, Alccofine, workability, compressive strength, flexural strength.