Strength Appraisal of Light Weight Green Concrete Made with Cold Bonded Fly Ash Coarse Aggregate
Y Supriya1, V Srinivasa Reddy2, M V Seshagiri Rao3, S Shrihari4
1Y Supriya, Student, M.Tech. (Structural Engineering), Department of Civil Engineering, Hyderabad, India.
2V Srinivasa Reddy, Professor of Civil Engineering, GRIET Hyderabad, India.
3M V Seshagiri Rao, Professor of Civil Engineering, CVR College of Engineering Hyderabad, India.
4S Shrihari, Professor of Civil Engineering, VJIT Hyderabad, India.
Manuscript received on 03 August 2019. | Revised Manuscript received on 07 August 2019. | Manuscript published on 30 September 2019. | PP: 5381-5385 | Volume-8 Issue-3 September 2019 | Retrieval Number: C6135098319/2019©BEIESP | DOI: 10.35940/ijrte.C6135.098319
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This study focusses on the development of fly ash concrete made with water/cement ratio of 0.5.To develop fly ash concrete in this study, 40% of cement is replaced with fly ash, manufactured sand is used as fine aggregate, light weight fly ash aggregate as used coarse aggregate and for mixing concrete instead of tap water 12% lime concentrated water is used. The fly ash concrete compressive strength obtained is equivalent to that of M30 grade concrete made with OPC. Two sets of samples are prepared one set with 40% fly ash concrete made with river sand and natural crushed stone coarse aggregates and another set of sample with 40% fly ash concrete made with manufactured sand and artificial light weight fly ash coarse aggregates. Experimental studies revealed that use of manufactured sand enhanced compressive, tensile and flexural strengths by 6-8% only. Even permeation properties such as water absorbtion and porosity of fly ash concrete made with manufactured sand and artificial light weight fly ash coarse aggregates is almost similar to that of fly ash concrete made with made with river sand and natural crushed stone coarse aggregates. The results conclude that fly ash coarse aggregates can be used for structural applications instead of natural coarse aggregates but not feasible for use in pavement as per IS 2386. Manufactured sand can be used as 100% replacement to river sand in fly ash based concretes with improved properties of concrete.
Index terms- Cold Bond Technique, Fly Ash Aggregate, Artificial Aggregate, Light Weight Aggregate, Polymerization
Scope of the Article: Green Computing