Evaluation of Mechanical Properties of Geo-Polymer Concrete by using Crushed Clay Bricks as Coarse Aggregates

Author(s):

M. N. Shiva Kumar , Department of Civil Engineering, Bapuji Institute of Engineering & Technology, ; Arpitha J, Research Student

Keywords:

Geo-Polymer Concrete, Clay Bricks, Coarse Aggregate, Fly Ash, Alternate Building Material

Abstract:

Concrete is widely used construction material, in Concrete cement is the main component. Cement produces greenhouse gas during manufacture so to reduce carbon emission in atmosphere cement is replaced by industrial by-product such as Fly ash. Geo-polymer concrete (GPC) utilizes fly ash as binding material instead of cement. Utilizing construction waste in concrete and making the concrete economical is gaining more importance now a day, more researches are going on this. The purpose of this project is to experimentally investigate the effect of using crushed clay bricks as coarse aggregates in Fly ash based GPC. In present project Fly ash is used as cementesious material, Sodium hydroxide and sodium silicate solution is used as binding activators which binds on geopolymerisation and granite aggregates are replaced by 0%,25%,50%,75%,100% crushed clay bricks as coarse aggregates. Geo-Polymer concrete specimens are cured at 60°C temperature for 24 hours. Mechanical properties such as Compressive strength, Splitting tensile strength Flexural strength are conducted on GPC samples and results are compared with conventional concrete samples. As bricks are cheap and easily accessible near the place of demolition of old buildings it reduces cost of construction than stone granite aggregate. Brick aggregates up to 50% can be replaced to get good result.100% replacement of Brick aggregate has least strength. GPC needs much care because of presence of activator NaOH which is caustic in nature.

Other Details:

Manuscript Id	:	IJSTEV3I3038
Published in	:	Volume : 3, Issue : 3
Publication Date	:	01/10/2016
Page(s)	:	91-95

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