摘要
为研究钢渣部分或全部替代天然集料对混凝土基本力学性能和体积变形行为的影响,对使用不同种类集料混凝土的抗压强度、抗折强度、干缩变形和早期塑性开裂进行了试验研究。结果表明:钢渣取代天然集料将使抗折强度稍微降低而抗压强度有一定提高,也将显著改善混凝土的早期塑性开裂行为;废旧轮胎胶粉颗粒取代10%细集料能够显著降低全级配钢渣集料混凝土的膨胀、普通混凝土的干燥收缩,也将使混凝土的强度有所降低;弹性废旧轮胎胶粉颗粒的使用,可以改善钢渣混凝土的体积变形。
The compressive and flexural strengths of concrete with different aggregates were tested for investigating the influence of steel slag substituting partial or whole natural aggregates in conventional concrete. In order to improve the possible excessive expansion of concrete with steel slag aggregates, especially the concrete prepared with only using steel slag as fine and coarse aggregates, the scrap tire particles were used to substitute for partial aggregate and its effect was preliminary studied. The compressive and flexural results show that the mechanical strength of concrete containing steel slag aggregates is acceptable with only slightly decrease of flexural strength and considerable increase of compressive strength. The expansion of concrete by partially substitution of free steel slag aggregate with scrap tire particles showed obvious decrease. So the scrap tire particles modified steel slag concrete with satisfactory mechanical strength, shrinkage and early-age plastic cracking performance.
出处
《安徽工业大学学报（自然科学版）》
CAS
2013年第3期275-279,共5页
Journal of Anhui University of Technology（Natural Science）
基金
安徽省自然科学基金项目(1308085QE83)
住房和城乡建设部科学技术计划项目(2010-K4-27
2011-K4-27)
关键词
钢渣
废旧轮胎颗粒
混凝土
体积变形
强度
steel slag
scrap tire particles
concrete
volume deformation
strength
