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为了定量评价水泥稳定碎石排水基层材料中水泥胶浆稠度的合理性,设计了针对水泥稳定碎石排水基层材料的析漏试验。以析漏质量为评价指标,根据对不同胶浆稠度的水泥稳定碎石材料的析漏试验确定了试验的标准析漏时间为60 s。以7 d无侧限抗压强度大于5 MPa和空隙差小于5%作为力学强度和空隙均匀性的评价标准,通过建立析漏质量与7d无侧限抗压强度和空隙差的关系,确定满足力学强度和空隙均匀性要求的水泥胶浆的析漏质量小于150 g。为检验方法的合理性,测试了采用该方法所设计混合料的空隙率和不同龄期的抗压强度、劈裂强度和回弹模量。结果表明,采用该方法设计的混合料既具有较大且均匀的空隙率,在不同的龄期又具有较高的抗压强度、劈裂强度和回弹模量,满足力学性能要求。
In order to quantitatively evaluate the rationality of the cement mortar consistency in the cement stabilized gravel drainage base material, a leak test for the cement stabilized gravel drainage base material was designed. According to the analysis of the leak quality, the standard leak time of the cement stabilized gravel material with different mortar consistency was determined to be 60 s. The 7d unconfined compressive strength of more than 5 MPa and the void difference of less than 5% were used as the evaluation criteria for the mechanical strength and void uniformity. By establishing the relationship between the leak quality and the unconfined compressive strength and voidage for 7 days, The quality of the cement mortar required for mechanical strength and void uniformity is less than 150 g. In order to test the rationality of the method, the void ratio and compressive strength, splitting strength and modulus of rebound of the mixture designed by this method were tested. The results show that the mixture designed by this method not only has large and uniform porosity, but also has higher compressive strength, splitting strength and resilience modulus at different ages to meet the mechanical performance requirements.