Effect of fly ash content on engineering properties of unfired building bricks
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Keywords:
unfired building bricks
fly ash
compressive strength
water absorption
bulk density
Abstract
The use of unfired building bricks (UBB) to replace conventional fired clay bricks is an effective way to reduce the negative effects on the environment. Moreover, utilization of fly ash (FA) to partially replace cement in UBB significantly reduces the amount of CO2 emission to the atmosphere. This study investigates the possible application of raw FA from Nghi Son coal power plant in the production of UBB. The FA is used to replace 0%, 15%, 30%, and 50% cement in the brick mixtures. The effect of FA content on engineering properties of the UBB is evaluated. Analysis of cost and the optimal mixture is also conducted. Test results indicate that all of the brick samples have technical properties satisfying the requirements of TCVN 6477-2011. Moreover, this study finds that increasing the amount of FA results in reducing compressive strength, bulk density, and cost, however, increasing the water absorption of brick.
References
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Published
Nov 30, 2017
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How to Cite
Ngo Si Huy, Huynh Trong Phuoc. “Effect of Fly Ash Content on Engineering Properties of Unfired Building Bricks”. The University of Danang - Journal of Science and Technology, vol. 11, no. 120.4, Nov. 2017, pp. 32-36, https://jst-ud.vn/jst-ud/article/view/3575.
