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公路建设中路床和路基部分大量使用了石灰(或水泥)改良土,为了保证改良土中含灰量达到设计要求,需要在不同时间检测改良土的灰剂量.为适合二次掺灰工艺,提出了EDTA标准液消耗量随时间降低的标准曲线,把它应用于宁淮高速公路路基改良土现场灰剂量检测中,得到了合理的测试结果.结论对改进灰剂量检测方法和控制工程质量有重要意义.
In order to ensure that the ash content of the modified soil meets the design requirements, it is necessary to test the ash content of the modified soil at different times. For the purpose of being suitable for the secondary ash-blending process, the limestone (or cement) The standard curve of the consumption of EDTA standard solution decreased with time, and it was applied to the on-site ash dose detection of subgrade improvement soil in Ningghui Expressway, and the reasonable test results were obtained.Conclusion It is important to improve the testing method of ash dosage and to control the project quality significance.