Synthesis and characterization of rice husk activated carbon as filler in lightweight concrete

Light Weight Concrete has a light mass but has a high compressive strength value. According to SNI-03-2847-2002, LWC has a density of no more than 1900 kgm−3 and containing light aggregate. The researchers continue to make efforts to increase the compressive strength of concrete by adding a mixture of ingredients as fillers as an effort to increase the value of the compressive strength of LWC. Generally, The nature of concrete can change due to factor as the nature of cement, aggregate, and cement water factor. The application of concrete properties can be achieved optimally by selecting the right mixture. Rice husk ash (RHA) has a high Silica Oxide (SiO2) value of about 89.57 %, compared to oil palm shell (Palm Kernel Shell) = 31.73% and coconut shell (Coconut Shell) = 45.05%. The use of rice husk ash (RHA) is produced by burning rice husks at high and controlled temperatures and then pulverizing them into fine particles similar to or finer to Portland cement. The characterization the crystal structures were analyzed using X-Ray Diffraction (XRD), The Fourier Transform Infrared (FTIR )to determine the structure of chemical compounds