中文摘要：

研究了掺50％矿渣的水泥.矿渣复合胶凝材料3 a龄期的硬化浆体C-S-H凝胶特性，结果显示：3 a龄期时矿渣反应程度为68.3％，大部分小颗粒矿渣已反应，但许多大颗粒矿渣几乎未反应；长龄期时浆体中Ca（OH）2没有消耗殆尽，从SEM图像中可以发现Ca（ OH）2大量存在；水泥－矿渣复合胶凝材料体系3 a龄期的C-S-H凝胶的Ca／Si比、（Al＋ Mg）／Si比均值分别为1.88和0.60，相较于水泥生成的C-S-H凝胶，水泥－矿渣复合胶凝体系的C-S-H凝胶Ca／Si比较低，且含有大量Al。但Ca／Si比明显高于水泥－粉煤灰复合胶凝材料生成的C-S-H凝胶。

英文摘要：

The 3-year characteristics of the C-S-H gel produced by hydration of cement.GGBS composite binder containing 50% slag were investigated. The results show that the reaction degree of slag is 68.3% at the age of 3 years. Most of the small GGBS particles react heavily but many large particles remain almost unreacted. The Ca （ OH ） 2 in long.term hardened paste is not consumed completely, and a lot of Ca（OH）2 can be observed in the SEM photograph. The mean Ca/Si, and （Al＋Mg）/Si atom ratios of the gel in the 3-year hardened cement.GGBS paste are 1.88 and 0.60, respectively. The gel produced by cement.GGBS binder has a lower Ca/Si atom ratio and higher Al content than that of Portland cement paste. But the Ca/Si of the gel produced by cement-GGBS binder is much higher than that of the gel produced by cementfly ash binder.