ADDED INFLUENCE "OIL PALM COIR FIBER" TO CONCRETE STRENGTH

This research intent to know increase influence "oil palm coir fiber" to concrete Strength. The objective of this research is to know how oil palm coir fiber affects to the concrete strength. During the experiment 22.5 mm oil palm coir fibers were mixed to the concrete mortar. The oil palm coir fiber length diameter was 0.2-0.4 mm. The concrete simple size is 15 cm x 15 cm x l60 cm, Total number of sample is 12 pc. The cement water factor was 0.45 –0,55. The oil palm coir fiber volume proportion were 0%, 1%, 2%, and 2,5%. It was observed that those addition increase the strength by 19,67%, and decrease concrete break