Effect of binder content and water-binder ratio in mortar developed using partial replacement of cement with palm oil clinker powder

14th International Conference on Concrete Engineering and Technology

Sumesh, Mathialagan^1 ; Alengaram, U Johnson^1 ; Nayaka, Ramappa Ramesh^1

Centre for Innovative Construction Technology (CICT), Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur

50603, Malaysia^1

关键词: Cement replacement;    Different binders;    Fresh and hardened properties;    Ordinary Portland cement;    Palm oil clinkers;    Partial replacement;    Strength reduction;    Water binder ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/431/8/082007/pdf
DOI  :  10.1088/1757-899X/431/8/082007

来源: IOP

【 摘 要 】

The manufacture of cement leads to almost 5 to 7% of the total production of carbon dioxide which causes greenhouse effect. So, it is vital to replace the ordinary Portland cement by the other binders which have the similar or better properties than cement. Besides, the recent interests on the palm oil industrial wastes in the development of mortar led to research works on usefulness of these wastes in construction materials. The palm oil industry produces many wastes such as oil palm shell, palm oil fuel ash (POFA) and palm oil clinker powder (POCP). In this research work, an experimental study was conducted to investigate the effects of different binder contents, and water-binder (w/b) ratio on the development of mortars. Conventional ordinary Portland cement was replaced with 40% of POCP and the total binder contents of 450, 500 and 550 kg/m3 with w/b ratios of 0.45, 0.35 and 0.32 used. The properties of mortars were evaluated for fresh and hardened properties; XRD characteristic was also studied. Test results showed that the strength of mortar specimens improved as the binder content increased with subsequent decrease in w/b ratio. POCP mortar specimens with binder content of 550kg/m3 with cement replacement of 40% produced 28-day compressive strength of 45.3 MPa, compared to 65.12 MPa for control cement mortar (CM). The value of flow diameter of 40% replacement of POCP mortar was 108.51 mm and this was 16.6% lower compared to control mortar. Though POCP based mortar produced a strength reduction of about 36.6%, its usefulness in achieving acceptable strength and sustainable aspect of reducing 40% of conventional cement could be considered significant.