Pavement Performance of Cement Stabilized Slag Base

NA LI, RUN-QIAN MA, XI-JUAN XU

Abstract


In order to study the influence of power plant slag on the mechanical properties of cement stabilized macadam base, the cement stabilized macadam mixture was prepared by replacing natural stone with slag according to different proportion, and the compaction characteristics, unconfined compressive strength, splitting strength and compressive modulus of elasticity of the mixture were tested. The results show that the larger the amount of slag, the larger the optimal moisture content of the mixture and the smaller the maximum dry density; the 7-day unconfined compressive strength of the semi-rigid base layer increases first and then decreases with the amount of slag. Both the crack strength and frost resistance index decrease with the increase of slag content. The results prove that slag can be used as a substitute for aggregates in semi-rigid base course, which provides a test basis for the application of slag in road engineering.

Keywords


Slag, Rebound modulus, Splitting strength, Compressive strengthText


DOI
10.12783/dteees/peems2019/33969

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