Effect of Water Soluble PVA on the Micro- structure Characteristics of C-S-H Formed in Na2SiO3-Ca（NO3）2 Solution System
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2011年第3期
论文作者：何永佳
文章页码：552 - 555
摘 要：The structure characteristics of hydrated calcium silicate synthesized by solution reaction method with the existing of water soluble polymer polyvinyl alcohol（PVA）are investigated.Using Na 2 SO 3 and Ca（NO 3 ） 2 as the main raw materials,in the condition of 2%（in weight）addition of PVA and the water to solid ratio of 20,hydrated calcium silicate samples（Ca/Si=1.0 and 1.5）were prepared with 60℃water bath.IR,BET,XRD and SEM methods were used to study the microstructure of the hydration products.The results showed that the addition of water soluble PVA did not alter obviously the amorphous structure characteristic of hydrated calcium silicate,but it had effects on the polymerization status of Si-O chain and the pore structure.The effects are somewhat obvious in the samples with the Ca/Si of 1.0.
何永佳
Key Laboratory for Silicate Materials Science & Engineering(Wuhan University of Technology)
摘 要：The structure characteristics of hydrated calcium silicate synthesized by solution reaction method with the existing of water soluble polymer polyvinyl alcohol（PVA）are investigated.Using Na 2 SO 3 and Ca（NO 3 ） 2 as the main raw materials,in the condition of 2%（in weight）addition of PVA and the water to solid ratio of 20,hydrated calcium silicate samples（Ca/Si=1.0 and 1.5）were prepared with 60℃water bath.IR,BET,XRD and SEM methods were used to study the microstructure of the hydration products.The results showed that the addition of water soluble PVA did not alter obviously the amorphous structure characteristic of hydrated calcium silicate,but it had effects on the polymerization status of Si-O chain and the pore structure.The effects are somewhat obvious in the samples with the Ca/Si of 1.0.
关键词：
