Comparison of Fly Ash Based (AAC) Block and Clay Bricks for Structure and Strength Properties. Issue 1 (August 2021)

• Record Type: Journal Article
• Authors: Singh, V; Behl, V; Dahiya, V
• Is Part Of: Journal of physics. Volume 1950:Issue 1(2021)
• Publication Date: 2021-08
• Subjects: Fly ash -- Autoclaved aerated concrete (AAC) -- Clay bricks -- Cost reduction; Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1950/1/012074
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Fly Ash, a waste product collected from precipitators of coal based thermal power plants can be utilized as a potential resource as construction material. Fly ash, being fine light weight silica particles can cause environmental pollution if not managed properly, and/or not utilized as construction material. Fly ash can be used along with cement, cementitious materials to develop bricks and blocks which possess good properties for civil engineering structures. This paper presents comparative analysis of clay bricks and fly ash based autoclaved aerated concrete (AAC) block properties, methodology, process and material required for preparing fly ash based AAC block as per Indian standard code provisions, inspection and quality control. The textures of the blocks with fly ash were very similar to that of clay bricks; the sample with the additive contains spherical fly ash particles. These fly ash particles led to reduction in the density of the blocks and a substantial improvement in their durability. Use of this additive could have practical implications as a means of recycling and for achieving cost savings in blocks production. The structural cost, cement mortar for plaster & masonry, breakage, construction speed, quality, fitting & chasing, carpet area, availability, energy saving, chemical composition of fly ash based AAC blocks compared with normal clay bricks that delivered good results. From the present study, it can be concluded that fly ash based AAC blocks can be used as an alternative to clay bricks because of their strength, uniformity and smooth surfaces and lower cost. The cost of fly ash-based blocks was found about 20-35 % lesser than the clay bricks.