期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Kaolin-based geopolymers with various NaOH concentrations 被引量:4
1
作者 C.Y. Heah H. Kamarudin +5 位作者 a.m. mustafa al bakri M. Bnhussain M. Luqman I. Khairul Nizar C.M. Ruzaidi Y.M. Liew 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2013年第3期313-322,共10页
Kaolin geopolymers were produced by the alkali-activation of kaolin with an activator solution (a mixture of NaOH and sodium silicate solutions). The NaOH solution was prepared at a concentration of 6-14 mol/L and w... Kaolin geopolymers were produced by the alkali-activation of kaolin with an activator solution (a mixture of NaOH and sodium silicate solutions). The NaOH solution was prepared at a concentration of 6-14 mol/L and was mixed with the sodium silicate solution at a Na2SiO3/NaOH mass ratio of 0.24 to prepare an activator solution. The kaolin-to-activator solution mass ratio used was 0.80. This paper aimed to analyze the effect of NaOH concentration on the compressive strength of kaolin geopolymers at 80℃ for 1, 2, and 3 d. Kaolin geopolymers were stable in water, and strength results showed that the kaolin binder had adequate compressive strength with 12 mol/L of NaOH concentration. When the NaOH concentration increased, the SiO2/Na20 decreased. The increased Na20 content enhanced the dissolution of kaolin as shown in X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses. However, excess in this content was not beneficial for the strength development of kaolin geopolymers. In addition, there was the formation of more geopolymeric gel in 12 mol/L samples. The XRD pattern of the samples showed a higher amorphous content and a more geopolymer bonding existed as proved by FTIR analysis. 展开更多
关键词 GEOPOLYMERS KAOLIN compressive strength sodium hydroxide
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部