Effect of Using Chopped Sisal Fiber (CSF) on Enhancing Properties of Pure Gypsum with Various Water Content

¹ Department of Civil Engineering, EngineeringˑCollege, Mustansiriyah University, 10064 Baghdad, Iraq
² Department of Water Resources Engineering,ˑEngineering College, Mustansiriyah University, 10064 Baghdad, Iraq
³ Civil Engineer, Iraqi Engineers Union, 10064 Baghdad, Iraq

^* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it. , This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

The current study investigates the influence of employing one of the natural fibres (Sisal Fibre (SF)) on pure gypsum characteristics (specifically compressive strength and density). The four pure gypsum mixtures used in the study plan are split into two groups based on the (water / pure gypsum) ratios (0.55 & 0.65). Based on the volume fraction (Vf) of chopped sisal fiber (CSF), each group was split into two groups: 0.0 and 0.4 percent. For every mixture, three cubic (50 x 50 x 50 mm) samples were made. For both (W/PG) ratios, it was discovered that adding CSF to pure gypsum mixtures increased compressive strength; the proportion of this increase increased as the (W/PG) ratio increased. Additionally, the compressive strength decreases for all (Vf) of CSF when the (W / PG) ratio is increased, and this percentage of degradation decreases when CSF is present. However, it was also shown that adding CSF to pure gypsum mixtures results in a modest loss in density for both W/PG ratios, with the proportion of this drop decreasing as the W / PG ratio increases. Additionally, the density deteriorates for all (Vf) of CSF when the (W / PG) ratio is increased, and this percentage of degradation is marginally reduced when CSF is present.