Effects of Different Measures on Performance of Cement Stabilized Macadam Mixture

Abstract

Abstract: Through compressive rebound modulus tests, strength tests, shrinkage tests and durability tests, the improvement effects of four different measures, including vibration mixing technology, adding basalt fiber, adding expansion agent and increasing the amount of cement, on the performance of cement stabilized macadam mixture were studied. The effect degrees of different technical measures on the properties of cement stabilized macadam mixture were evaluated based on multivariate analysis of variance. The results show that these four measures have significant impact on the performance of cement stabilized macadam mixture. Increasing the amount of cement has the most significant effect on the improvement of its strength, compressive rebound modulus and durability, but the anti-shrinkage cracking performance is unfavorable. The addition of expansive agent and basalt fiber significantly improve the dry shrinkage performance of cement stabilized macadam mixture, and compared with the benchmark cement stabilized macadam mixture at the age of 31 d, the dry shrinkage coefficient is reduced by 57.7% and 18.8%, respectively.

Key words: cement stabilized macadam mixture, durability, shrinkage performance, expansive agent, basalt fiber, vibratory mixing

CLC Number:

U414

TIAN Xiaoge, YU Shui, LI Guangyao, MIN Xuefeng, REN Quan, YANG Fan. Effects of Different Measures on Performance of Cement Stabilized Macadam Mixture[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(7): 2235-2243.

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