摘要
为探讨不同分子结构氨基三元醇(ATA)对钢渣–矿渣复合胶凝体系水化的影响,采用胶砂强度和水化热测试、X射线衍射、热重–差示扫描量热分析和扫描电子显微镜观察,研究了三乙醇胺(TEA)、二乙醇单异丙醇胺(DEIPA)和三异丙醇胺(TIPA)对钢渣–矿渣复合胶凝体系的力学性能和水化特性的影响。结果表明:3种不同分子结构的ATA不同程度提高了钢渣–矿渣复合胶凝体系抗压强度;在相同掺量下,3种不同分子结构的ATA对钢渣–矿渣复合胶凝体系的强度影响规律与ATA分子结构中含有的甲基数量相关,影响大小顺序为:TEA、DEIPA、TIPA。在掺量为0.03%时,ATA对复合体系的增强效果最显著。这是由于ATA提高了复合胶凝材料中钢渣–矿渣复合胶凝体系的水化速率,促进了钢渣和矿渣的水化,消耗了氢氧化钙并形成了更加致密的基体结构。
The influence of amino-ternary alcohol （ATA） on the strength development and hydration of composited cementitious system incorporated with steel slag-granulated blast furnace slag （GBFS） was investigated. The mechanical and hydration properties of steel slag-GBFS blend cementious system in the presence of triethanolamine （TEA）, triisopropanolamine （TIPA） and diethanol-isopropanolamine （DEIPA） were analyzed by mortar experiment, hydration heat release, X-ray diffraction （XRD）, differential scanning calorimetry-thermogravimetry （DSC-TG） and scanning electron microscopy （SEM）, respectively. The results show that the promoting effect of ATA on the hydration of steel slag-GBFS cementitious system is related to the numbers of methyl on the branched chain of ATA. A few numbers of methyl can favor the strength development. The compressive strength of blend cementious system is promoted by ATA, among which TEA leads to the maximum compressive strength at different ages. The addition of ATA can enhance the hydration of steel slag and GBFS via increasing the heat flow at early age and decreasing the content of portlandite （CH） to form a more compacted structure. The addition of ATA has a positive effect on the strength development of composited cementitious system.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2017年第2期206-211,共6页
Journal of The Chinese Ceramic Society
基金
国家"973"计划(2012CB720403)
国家自然科学基金(51504013)
北京市自然科学基金(2154044)资助项目
关键词
氨基三元醇
钢渣
矿渣
复合胶凝体系
水化
amino-ternary alcohol
steel slag
granulated blast furnace slag
composited cementitions system
hydration
