The Effect of Addition of Used Fabric Fiber on the Mechanical Properties of Gypsum List

Research has been carried out on samples of lysed gypsum. This research aims to look at the mechanical properties of the addition of the proportion of used cloth fibers. Variations in the composition of gypsum flour and used cloth fiber are 2%, 4%, 6%, and 8%, with a water-cement factor (FAS) value 0.5. We are making samples of lysate gypsum using a hot press machine with a heat temperature of 90°C within 30 minutes. The mechanical properties tested included fracture strength (MOR) and flexural strength (MOR). The test tool used for MOR and MOE is UTM. The test results showed that gypsum plaster with the addition of used cloth fibers had fracture strength values of 953.1 kgf/cm2 to 2,981.4 kgf/cm2 and flexural strength values of 63,519.67 kgf/cm2 to 408,454.61 kgf/cm2. All gypsum plaster samples complied with SNI 01-4449- 2006 concerning fiberboard quality standards.