RELATIONSHIP BETWEEN COMPRESSIVE STRENGTH AND VOID CONTENT OF PORTLAND CEMENT PERVIOUS CONCRETE- OKPS USING RESPONSE SURFACE METHODOLOGY

Nowadays, in Malaysia, there are flooding issues during heavy rain. The drainage system is not capable to smoothly manage the wastewater. This is caused by the increase in infrastructure and construction. It was recommended to use pervious concrete (PC) as an alternative for this issue. However, PC is not environmentalfriendly due to the presence of non-renewable material in its production. The use of oil palm kernel shells in PC is considered the best alternative. A series of PC-OPKS mixes were designed up to 20% levels of replacement of OPKS to Portland cement PC. It was found that OPKS10 enhanced the strength but was lower than the control PC. The results also exhibited that PC-OPKS significantly and positively affect the void content. Based on RSM analysis, the inclusion of OPKS in PC has a strong relationship with strength and void content. Obviously, PC-OPKS features a lower compressive strength but greater void content when compared to PC alone.