3. 3 Compressive strength of fiber cement mortars Test results of the compressive strengths of cement mortars are shown in Fig. 6 It was found that the compressive strengths of cement mortars mixed with oil palm fiber and coconut coir fiber to decrease with an increase in the fiber replacement ratios.
which is consistent with other Moreover, both types of mixed cement mortars had similar compressive strengths: 424.5, 385.6 and 361.3 for coconut coir fiber, and 351.4 and 8.5 kg/cm for oil palm fiber, with fiber replacement ratiosof5x, 10x and 15% by weight, respec- tively.
The compressive strengths of both fiber cement mortars were comparable due to the fact that the effects of the physical properties of fibers were not significantly different.