碱锂渣混凝土的孔径分布与活性评价

Activity Evaluation and Pore Distribution of Lithium Slag Concrete under Alkali-activated

为研究大掺量下锂渣混凝土的性能,采用氯离子渗透、吸水动力学、活性评价等方法分析了碱锂渣混凝土的力学性能、氯离子渗透性能、孔结构参数和活性因子。结果表明,锂渣掺量在40%以内时,掺碱混凝土的活性因子、抗压强度均较未掺碱时大;掺碱后混凝土的孔径均匀性较不掺碱时更大,平均孔径则更小;碱的使用激发了锂渣活性,有利于大掺量锂渣的利用,为利用碱锂渣制备混凝土提供了理论参考。

In order to study the performance of high volume lithium slag concrete,the mechanical properties,chloride ion permeability,pore structure parameters and active factor of alkali lithium slag concrete were analyzed by using chlorine ion permeability,water dynamics,active evaluation method.The results show that the activity factor,compressive strength and pore uniformity of the concrete mixed with alkaline are larger,and the average pore size is smaller when lithium slag content is within 40%.The activity of lithium slag is stimulated by alkaline,which promotes the use of lithium slag.So,it provides theoretical basis for lithium slag in concrete and mortar.