作　　者： ; ; ; ; ;

机构地区： 华南农业大学水利与土木工程学院

出　　处： 《硅酸盐通报》 2013年第7期1410-1416,共7页

摘　　要： 通过测定原材料反应程度、试样水化产物、显微结构和抗压强度等方法研究了煤粉炉渣-石灰与粉煤灰-石灰体系在常温常压及蒸压条件下的反应过程,并结合FTIR、溶出性SiO2、Al2O3等手段分析两种体系反应过程差异的机理,结果表明,煤粉炉渣-石灰体系在常温常压及蒸压条件下的反应程度均高于粉煤灰-石灰体系,生成的水化产物较多,水化产物钙硅物质的量比低,制品强度较高。煤粉炉渣-石灰体系反应程度更高的原因在于煤粉炉渣红外光谱1100 cm-1附近强吸收区的Si-O伸缩振动频率较低,Si-O结构更容易破坏,溶出参与反应的SiO2、Al2O3更多,试样的抗压强度越高。 From reaction degree,hydration product,microstructure and compressive strength,reaction process of cinder-lime system was studied under normal temperature and pressure curing and autoclaved curing by contrast with fly ash-lime system that is used widely in industry.FTIR and The mass fractions of active SiO2 and Al2O3 were used to research reaction mechanism.The result show that reaction ability of cinder-lime system is stronger than fly ash-lime system under normal temperature and pressure curing and autoclaved curing,cinder-lime system forms more hydration product and lower n（Ca）/n（Si） C-SH,it has higher compressive strength.Higher reaction ability of cinder-lime system is due to cinder has lower Si-O stretching vibration wave number about 1100 cm-1 in strong absorption region of IR,more and faster dissolution of SiO2 and Al2O3 reacted with lime,thus cinder-lime system has higher compressive strength than fly ash-lime system under normal temperature and pressure curing and autoclaved curing.

关 键 词： 煤粉炉渣 反应程度 水化产物 伸缩振动

领　　域： [水利工程]