石灰钢渣稳定土的水稳性试验研究.pdfVIP

学兔兔 第13卷第6期 建 筑 材 料 学 报 Vo1．13，No．6 2010年 12月 JOURNAL OF BUILDING MATERIALS Dec．，2O10 文章编号：1007-9629(2010)06—0773—06 石灰钢渣稳定土的水稳性试验研究 乐金朝 ， 李新明 ， 乐旭东 (郑州大学 交通运输工程系，河南郑州450001) 摘要：针对路基工程施工需要，对于石灰钢渣稳定土在不同饱水时间以及不同干湿循环次数下无 侧限抗压强度和劈裂抗拉强度的变化规律进行了研究，并在最佳含水率附近探讨了钢渣稳定土的 强度对成型含水率的敏感性．结果表明：在饱水试验和干湿循环试验中，石灰钢渣稳定土的无侧限 抗压强度和劈裂抗拉强度在初期急剧减小，但最终均趋于稳定；随着龄期的增长，成型含水率的变 化对石灰钢渣稳定土强度的影响逐渐减小，增加钢渣掺量能够有效改善石灰钢渣稳定土的水稳 性能． 关键词：石灰钢渣稳定土；路基；水稳性；干湿循环 中图分类号：U416．4 文献标志码：A doi：10．3969／j．issn．1007—9629．2010．06．014 Experimental Study on Water Stability of Lime Steel Slag Stabilized Soil YUE Jin-chao． Lj Xin—ming。 YUE Xu—dong (Department of Transportation Engineering，Zhengzhou University，Zhengzhou 45000 1，China) Abstract：In order to study the water stability of lime steel slag stabilized soil and direct the construction of road bed，the varying characters of unconfined compressive strength and splitting tensile strength in differ— ent soaking periods and different wetting and drying cycles have been carried out in the state of optimal wa— ter content under certain compaction．The tWO strength indexes of lime steel slag stabilized soil were inves— tigated with the different water content when sample formed．Test results showed that after different soa— king periods and different wetting and drying cycles，both the unconfined compressive strength and the splitting tensile strength of lime steel slag stabilized soil decreased sharply at the initial stage，and drove to stability of status at last．For different water content，the influence on both the unconfined compressive strength and the