不同温度下锂渣混凝土的早期抗裂性能

Cracking Resistance at Early Ages of Concrete added with Lithium Slag under Different temperature

针对新疆的特殊地理区域和矿渣资源,用刀口法对不同温度下锂渣混凝土早期抗裂进行了研究。试验结果表明:锂渣掺量在一定范围内可以控制混凝土早期裂缝,且最优掺量为30%;高温时锂渣混凝土的耐久性优于素混凝土的耐久性;锂渣水化产物的膨胀性能够补偿高性能混凝土的早期收缩,从而提高高性能混凝土的早期抗裂性能。

In view of the special geography and slag resources in Xinjiang, the research on the early cracking resistance of lithium slag concrete under different temperature by using knife edge method. The experimental results show that ： The dosages of lithium slag concrete cracks can be controlled in a certain range, and the optimal dosage is 30% ; durability in high temperature lithium slag concrete durability is better than that of plain concrete. Expansion of early shrinkage of high performance concrete can compensate the lithium slag hydration products, so as to improve the early cracking resistance of high performance concrete.