粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2018N0.2 试验与应用 等强度条件下矿物掺合料对混凝土热学性能的影响 Effect of Mineral Admixtures on Thermal Properties of Concrete under Constant Intensity 易鹏，李晓庆，杨升 (新疆农业大学水利与土木工程学院，新疆乌鲁木齐830052) 摘要：在等强度(C45、C60)条件下，分别利用了水化热测定仪和混凝土绝热温升双曲线表达式研究了矿物掺 合料对混凝土中胶凝材料水化热及对混凝土绝热温升的影响，研究结果表明：掺入大掺量的矿物掺合料可以有效的降 低混凝土中胶凝材料的水化热和混凝土的绝热温升，从降低水化热的效果上来看，降低水化热的效果排序则为：单掺 粉煤灰>复掺粉煤灰与矿粉>单掺矿粉；在28d时，C60混凝土的绝热温升从整体上高于C45混凝土，但是混凝土绝 热温升减小的幅度（分别不超过9.6%、6.1%和10.6%）不是很明显. 关键词：等强度；水化热；绝热温升；矿物掺合料 中图分类号：TU528.041 文献标识码：A 文章编号：1005-8249(2018)02-0003-05 Yi Peng Li Xiaoqing.Yang Shen (College of Hydraulic and Civil Engineering Xinjiang Agricultural University Urumqi 830052 China) Abstract:In the same intensity C45 C60 conditions the effects of mineral admixtures on the hydration heat of cementitious materials in concrete and the adiabatic temperature rise of concrete were studied respectively by using hydration calorimeter and concrete adiabatic temperature rise hyperbolic expression.The results of the study shows that:the incorporation of high content of mineral admixture effectively reduces the heat of cementitious material hydration heat and concrete adiabatic temperature rises reducing the effect of hydration heat from the effeet of reducing heat of hydration The effect order is as follows:single mixed fly ash double mixed fly ash and mineral powder single mixed mineral powder at 28 days the adiabatic temperature rise of C60 concrete is generally higher than that of C45 concrete but the decrease o...
等强度条件下矿物掺合料对混凝土热学性能的影响.pdf
