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本文依托黄河冲积平原区郑民高速公路建设,探讨了7天无侧限抗压强度作为路床处理强度的控制指标,同时根据省内外经验,提出了7天无侧限抗压强度的控制标准,并把它成功运用到实践中,然后用贝克曼梁法检测路床竣工验收弯沉,结果表明路床土的弯沉值满足规范要求,说明此标准是合乎实际的。文中对不同水泥和石灰掺量下的水泥土和水泥石灰土的7天无侧限抗压强度进行试验,发现在加入相同水泥剂量的情况下,加入一定量的石灰对土的强度有很大的提高。
Based on the construction of Zheng-Min Expressway in the alluvial plain of the Yellow River, this paper discusses the 7-day unconfined compressive strength as the control index for the treatment of roadbed, and at the same time, puts forward the 7-day unconfined compressive strength control standard , And put it into practice successfully, and then use the Beckmann beam method to test the completion settlement of the roadbed. The results show that the deflection values of the soil in the roadbed satisfy the specifications, indicating that this standard is realistic. In the paper, the unconfined compressive strengths of 7 days cement cements and lime-lime cements with different cement and lime contents were tested. It was found that adding a certain amount of lime to the same amount of cement added to the strength of the soils Improve.