养护龄期对灰土工程性能的影响试验研究

灰土已作为一种廉价的建筑材料广泛应用于交通、土建工程中，但在工程实践中对灰土的工程性能及施工检测还缺乏足够的认识。本文通过室内试验，分析了养护龄期及灰土比对灰土的抗剪性和压缩性的影响，结果表明灰土的工程性能随养护龄期的增加而改善，尤其在30d内改善较为显著，同时灰土比大于2.5:7.5时，灰土的抗剪性较高，压缩性较低。最后对强度增长的微观机理进行了分析。实验结果对灰土工程施工检测及质量控制具有一定的实际意义，建议在施工设计及检测时应以一个月龄期的强度为标准。

Test about the Influence of Curing Age on the Engineering Properties of Lime-soil

Lime-soil has been widely used in communication and construction engineering as a cheap building material. But in practice, there is a little knowledge about the properties and monitoring of lime-soil. In this paper, through laboratory experiments, the influence of curing age and lime-soil ratio on the properties, such as shear strength and compressibility, is studied. Results show that the engineering properties of lime-soil are ameliorated with curing age. It is especially notable within 30 days and the engineering properties are better when the lime-soil ratio is greater than 2.5:7.5. Finally, the micro-mechanism of strength development is analyzed. Test results are useful for monitoring and controlling the quality of lime-soil construction. A proposal is suggested that for the standard, one-month strength should be taken for designing and monitoring the lime-soil.