Effect of the Ratio of Silica Source on Ultra-light Calcium Silicate Material In-situ Strengthened with Xonotlite Whiskers

摘要

The ultra-light calcium silicate material was reinforced with the method of xonotlite whisker in-situ growth via hydrothermal synthesis. Effects of different ratios of silica sources on microstructure and mechanical properties of the reinforcement were studied in this paper. The results indicated that the ratios of silica sources posed great impacts on microstructure and mechanical properties of the reinforcement. The reinforcement with density of 118 Kg·m~(-3), flexural strength of 0.42 MPa and compressive strength of 0.66 MPa was successfully prepared under the condition of K_2SiO_3: H_2SiO_3 (mol) = 2:1.