Effect of palm oil fuel ash on compressive strength of palm oil boiler stone lightweight aggregate concrete

International Conference on Innovative Technology, Engineering and Sciences 2018

工业技术;自然科学

Muthusamy, K.^1 ; Zamri, N.A.^1 ; Kusbiantoro, A.^2 ; Lim, N.H.A.S.^2 ; Mohd Ariffin, M.A.^2

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

26300, Malaysia^1

Faculty of Engineering Technology, Universiti Malaysia Pahang, Pahang Gambang, 26300, Malaysia^2

关键词: Large amounts;    Light-weight aggregate concrete;    Lightweight aggregate concrete(LWAC);    Oil boilers;    Palm oil mills;    Slump test;    Strength reduction;    Water demand;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/342/1/012098/pdf
DOI  :  10.1088/1757-899X/342/1/012098

来源: IOP

【 摘 要 】

Both palm oil fuel ash (POFA) and palm oil boiler stone (POBS) are by-products which has been continuously generated by local palm oil mill in large amount. Both by products is usually disposed as profitless waste and considered as nuisance to environment. The present research investigates the workability and compressive strength performance of lightweight aggregate concrete (LWAC) made of palm oil boiler stone (POBS) known as palm oil boiler stone lightweight aggregate concrete (POBS LWAC) containing various content of palm oil fuel ash. The control specimen that is POBS LWAC of grade 60 were produced using 100% OPC. Then, another 4 mixes were prepared by varying the POFA percentage from 10%, 20%, 30% and 40% by weight of cement. Fresh mixes were subjected to slump test to determine its workability before casted in form of cubes. Then, all specimens were subjected to water curing up to 28 days and then tested for its compressive strength. It was found out that utilizing of optimum amount of POFA in POBS LWAC would improve the workability and compressive strength of the concrete. However, inclusion of POFA more than optimum amount is not recommended as it will increase the water demand leading to lower workability and strength reduction.