Utilization of fly ash as partial sand replacement in oil palm shell lightweight aggregate concrete

Global Congress on Construction, Material and Structural Engineering 2017

材料科学;土木建筑工程

Muhammad Nazrin Akmal, A.Z.^1 ; Muthusamy, K.^1 ; Mat Yahaya, F.^1 ; Mohd Hanafi, H.^1 ; Nur Azzimah, Z.^1

Faculty of Civil Engineering and Earth Resources Universiti Malaysia Pahang, Lebuhraya Tun Razak, Pahang, Gambang

26300, Malaysia^1

关键词: Alternative materials;    Coal power plants;    Construction sectors;    Fly ash content;    Light-weight aggregate concrete;    Natural sand;    Oil palm;    River sands;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/271/1/012003/pdf
DOI  :  10.1088/1757-899X/271/1/012003

来源: IOP

【 摘 要 】

Realization on the increasing demand for river sand supply in construction sector has inspired the current research to find alternative material to reduce the use of natural sand in oil palm shell lightweight aggregate concrete (OPS LWAC) production. The existence of fly ash, a by-product generated from coal power plant, which pose negative impact to the environment when it is disposed as waste, were used in this research. The effect of fly ash content as partial sand replacement towards workability and compressive strength of OPS lightweight aggregate concrete were investigated. Four concrete mixes containing various percentage of fly ash that are 0%, 10%, 20% and 30% by weight of sand were used in the experimental work. All mixes were cast in form of cubes before subjected to water curing until the testing age. Compressive strength test were conducted at 1, 3, 7 and 28 days. The finding shows that the workability of the OPS LWAC decreases when more fly ash are used as sand replacement. It was found that adding of 10% fly ash as sand replacement content resulted in better compressive strength of OPS LWAC, which is higher than the control mix.