AN INVESTIGATION OF EFFECT OF RİCE HUSK POWDER (RHP) ON THE RHEOLOGICAL PROPERTİES OF CEMENT BASED GROUT (original) (raw)

The aim of this work; To observe the effect of rice husk powder (RHP) that is an organic waste material on the rheological and mechanical properties of the grout used as a soil improvement material at the soils that have bearing capacity and permeability problems. The investigates the fluidity and rheological properties of the cement based grout mixed with rice husk powder (RHP). The experimental program consisted of twenty-four different mixture having 4%, 8%, 12%, 16% and 20%. RHP content and four different water to cement ratios (w/c= 0.75, 1.00, 1.25 and 1.50). Workability properties (marsh cone flow time, plate cohesion, and mini slump diameter), plastic viscosity, apparent viscosity, and the yield stress of the mixtures were determined. Test results showed that increasing replacement level for the RHP amount increases marsh cone flow time, plate cohesion, plastic and apparent viscosity, and the yield stress, but also decreases mini slump diameter. Shear thickening and pseudo-plastic behavior was observed for high RHP content for w/c ratios greater than 1.25.