2017年6月上 施工技术 第46卷第11期 CONSTRUCTION TECHNOLOGY 47 D0I:10.7672/5j52017110047 半刚性钢渣基层抗裂性能试验研究* 李伟，郎雷，王志浩，陈俊 (沈阳建筑大学土木工程学院，辽宁沈阳110168) [摘要]半刚性基层具有整体强度高、稳定性好且造价低等优点，被广泛应用于高等级公路的基层，但其随着温度 和湿度的变化容易产生开裂问题.用钢渣代替水泥稳定基层中的碎石，对不同级配的钢渣和砂砾混合料进行了室 内干缩和温缩试验研究，分析其干缩系数、温缩应变等参数随时间、失水率以及温度的变化规律.试验结果表明， 在合理选用配合比及水泥剂量的条件下，采用半刚性钢渣基层材料作为道路基层材料具有较好的抗裂性能，并提 高废钢渣的利用率. [关键词]公路工程：半刚性钢渣基层：干缩：温缩；钢渣混合料；抗裂性能 [中图分类号]U414 [文献标识码]A [文章编号]1002-8498(2017)11-0047-06 Experimental Research on Cracking Performance of Semi-rigid Steel Slag Base LI Wei LANG Lei WANG Zhihao CHEN Jun (School of Civil Engineering Shenyang Jianzhu University Shenyang Liaoning 110168 China) Abstract:With advantages of high strength good stability and economy semi-rigid base is widely used in base course of high grade highway but it is easy to produce the crack problems with the change of temperature and humidity.Using steel slag to replace the gravel in cement stabilized base and the laboratory tests of dry shrinkage and temperature shrinkage were carried out for different gradations of steel slag and gravel mixture in order to analyze the change rules of parameters such as dry shrinkage coefficient and temperature shrinkage strain with time water loss ratio and temperature.The test results show that:with reasonable mixing ratio and cement content semi-rigid steel slag base materials used as road materials has better cracking performance and will improve the utilization of waste steel slag. Key words:road construction;semi-rigid steel slag ...
半刚性钢渣基层抗裂性能试验研究.pdf
