早强剂对水泥稳定碎石材料干缩特性试验研究

发布时间：2018-11-10 10:21

【摘要】：以研究水泥稳定碎石路用材料的干缩特性为目的,在稳定碎石材料中掺入5%的水泥,再按水泥用量的0%、8%、10%、12%、14%、16%的早强剂(ESE-1型)替换水泥,研究不同早强剂掺量的水泥稳定碎石材料的失水率、干缩应变、干缩系数、失水率与干缩应变的关系。研究结果表明:早强剂能够降低材料的失水率、干缩应变、干缩系数,其中早强剂掺量为16%的材料抗干缩能力最强。故早强剂在提高材料早期强度和加快道路施工速度的同时,能够提高水泥稳定碎石材料的抗干缩能力,改善水泥稳定碎石材料因干缩造成的早期病害。
[Abstract]:In order to study the dry shrinkage characteristics of cement stabilized macadam used in road, 5% cement was added into the stabilized macadam, and then the cement was replaced by 16% early strength agent (ESE-1 type) according to the amount of cement used 0 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10. The relationship between water loss rate, dry shrinkage strain, dry shrinkage coefficient, water loss rate and dry shrinkage strain of cement stabilized macadam with different early strength agents was studied. The results show that the early strength agent can reduce the water loss rate, dry shrinkage strain and dry shrinkage coefficient of the material, among which the material with 16% early strength agent has the strongest resistance to dry shrinkage. Therefore, the early strength agent can improve the dry shrinkage resistance of cement stabilized macadam and improve the early disease caused by dry shrinkage of cement stabilized macadam while increasing the early strength of material and speeding up the road construction speed.
【作者单位】：内蒙古工业大学土木工程学院;
【基金】：内蒙古工业大学重点基金(ZD201309) 呼市道路改造工程中新材料及新施工方法调研及方案编制研究(校企合作项目)
【分类号】：U414

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