Green Concrete Using Fly Ash and Silica Fume

Authors

  • Muzaffar Ahmad Mir
  • Abhinave Singh Verma

Abstract

Recycled coarse aggregate can also be used by partially replacing natural concrete aggregates, so that construction and demolition waste can be further used for aggregates in new construction. Recycled coarse aggregate includes brick, tile aggregates, crushed stone aggregates, glass aggregates, and demolished aggregates. In this paper, different recycled aggregates are used by 40 and 60% replacement with natural aggregates of size 20 mm. Granite stone, brickstone, concrete debris are used as Recycled Coarse Aggregates in this experimental work. Ordinary Portland Cement is replaced by 30–40% with fly ash and 10–20% replacements of silica fume are used, respectively. Finally slump tests and compression tests are conducted on the concrete cubes after 28 and 56 days to compare the results. Test results show that under the equivalent mix proportions, the workability decreases with an increment in the recycled coarse aggregate as replacement percentages. The concrete having 40% crushed granite aggregate gives optimum compressive strength of the cubes. Test results show that if any major cause happens in the society and the persons shifted to other places so the structure which is using this type of material can be used for economic feasibility.
Keywords: Green concrete, Brick stone, concrete debris, Fly ash, Silica fume, Workability, Compressive strength

Downloads

Published

2020-12-11

Issue

Vol. 6 No. 2 (2016)

Section

Articles

License

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

  • I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
  • I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
  • I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
  •  I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. ________________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.