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石灰士广泛应用于路面基层，但石灰土基层由于温度与湿度的变化易产生收缩或冻胀变形，从而出现开裂。文章对如 何防止开裂提出了可行的工程技术措施。
The limestone is widely used in the grassroots pavement, but the limestone soil is prone to cracking due to shrinkage or frost heave due to changes in temperature and humidity. The article puts forward feasible engineering and technical measures on how to prevent cracking.