南京河西地区软土快速固化剂的研制

Development of Rapid Curing Agent for Soft Soil in Hexi Region of Nanjing

软土地基的快速处理是缩短道路施工工期,确保施工质量的有效措施。该研究结合南京河西地区长江漫滩软土,研制一种高效经济的软土固化剂。选择主固化材料水泥与辅助固化材料电石渣、石膏、三乙醇胺、氢氧化钠和聚丙烯纤维,通过配比设计对南京河西地区软土分别进行固化试验。通过无侧限抗压强度试验,确定固化土的强度特性,最终得出快速固化剂的最终配比为:9%水泥,4%电石渣,2%石膏,2%氢氧化钠。

The rapid treatment of soft soil subgrade is the effective measures for shortening the road construction period and ensuring the construction quality.Combined with the flood land soft soil of Changjiang River in Hexi Region of Nanjing,the article introduces the development of a high-efficient economic soft soil curing agent.The main curing material is the cement,and the auxiliary curing materials are the carbide slag,gypsum,triethanolamine,sodium hydroxide and polypropylene fiber for selection.The mixing ratio design is used to carry out the curing tests of the soft soil in Hexi Region of Nanjing.The strength characteristic of stabilized soil is determined through the unconfined compressive strength test.The final mixing ratio of rapid curing agent is 9% cement,4% carbide slag,2% gypsum and 2% sodium hydroxide.