装配式路面基层灌浆料基本力学性能试验研究

Experimental Study on Basic Mechanical Properties of Grouting Material for Prefabricated Pavement Base

本文对装配式路面基层灌浆料的基本力学性能进行了系统试验研究。通过掺入粉煤灰、硅灰、矿粉和玻璃纤维改善灌浆料的力学性能,并与根据相关规范制备的普通型灌浆料的力学性能进行了对比分析。试验结果表明,相比普通型灌浆料,本研究中在自制灌浆料中不同掺量的粉煤灰、硅灰、矿粉和玻璃纤维对抗压强度改善效果明显,但对抗折强度改善效果并不显著。普通型灌浆料的28天抗折和抗压强度相对7天强度增幅仅为5.7%和12.2%,而自制灌浆料的抗折和抗压强度增幅范围分别为19.6%~93%和13.5%~167%,远高于普通型灌浆料的强度增幅。

In this paper, the mechanical properties of grouting material of prefabricated pavement base were studied systematically. The effects of fly ash, silica fume, mineral powder and glass fiber on the mechanical properties of grouting materials were studied, and the results were compared with those of the common grouting materials prepared according to relevant specifications. The results show that, compared with the common grouting material, mixing different amounts of fly ash, silica fume, mineral powder and glass fiber into the self-made grouting material could improve the compressive strength significantly, but the effect of improving the flexural strength was not obvious. The 28-day flexural strength and compressive strength of common grouting material increased by 5.7% and 12.2% compared with the 7-day strength, while the flexural and compressive strength of the self-made grouting material increased by 19.6%~93% and 13.5%~167%, respectively, which was much higher than that of the common grouting material.