Performance of composite sand cement brick containing recycle concrete aggregate and waste polyethylene terephthalate with different mix design ratio

4th International Conference on Civil and Environmental Engineering for Sustainability

地球科学;生态环境科学;经济学

Azmi, N.B.^1 ; Khalid, F.S.^1 ; Irwan, J.M.^1 ; Mazenan, P.N.^1 ; Zahir, Z.^1 ; Shahidan, S.^1

Jamilus Research Center, Faculty of Civil and Environment Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor

86400, Malaysia^1

关键词: Cement bricks;    Mix designs;    Natural sand;    Recycled concrete aggregates;    Waste polyethylene terephthalates;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/140/1/012129/pdf
DOI  :  10.1088/1755-1315/140/1/012129

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This study is focuses to the performance of composite sand cement brick containing recycle concrete aggregate and waste polyethylene terephthalate. The objective is to determine the mechanical properties such as compressive strength and water absorption of composite brick containing recycled concrete aggregate and polyethylene terephthalate waste and to determine the optimum mix ratio of bricks containing recycled concrete aggregate and polyethylene terephthalate waste. The bricks specimens were prepared by using 100% natural sand, they were then replaced by RCA at 25%, 50% and 75% with proportions of PET consists of 1.0%, 1.5%, 2.0% and 2.5% by weight of natural sand. Based on the results of compressive strength, it indicates that the replacement of RCA shows an increasing strength as the strength starts to increase from 25% to 50% for both mix design ratio. The strength for RCA 75% volume of replacement started to decrease as the volume of PET increase. However, the result of water absorption with 50% RCA and 1.0% PET show less permeable compared to control brick at both mix design ratio. Thus, one would expect the density of brick decrease and the water absorption to increase as the RCA and PET content is increased.