High-performance Reactive Magnesium Cement Incorporating Hollow Natural Fiber and Silica Sand

Global warming caused by CO 2 emissions makes reactive magnesium cement (RMC) increasingly attractive due to its ability sequester , however, the diffusion of in RMC is severely limited dense hydrated carbonates (HMCs) formed on outer layer. This work utilizes hollow natural fiber (e.g., sisal fiber) facilitate into deep part specimen. Combining with adding silica sand as a filling agent, mechanical strength can be enhanced from 42.4 MPa control group 92.6 specimen vol.% fiber, this attributed that addition significantly enhances carbonation depth. FTIR and XPS results further prove or more improve degree over 200%, leading sharp reduction emission 37 kg/(m 3 >MPa) 12.1 ∘MPa) fiber. Therefore, promising approach make stronger sustainable.