A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Improvement method and construction method of expansive soil
The invention relates to an improvement method and a construction method of expansive soil. The improvement method of the expansive soil is characterized in that the expansive soil is improved by using a modifier, the modifier comprises lime, the addition amount of the lime is 3%-10% of the mass of the expansive soil, and the above percentages are mass percentages. The improvement method comprises the following specific improvement steps of (1), uniformly mixing a modifier and expansive soil to obtain mixed expansive soil; (2), determining the optimal water content of the mixed expansive soil according to a heavy compaction test in "Road Geotechnical Test Regulations" JTG E40-2007; and (3), adding water into the mixed expansive soil obtained in the step (1) according to the determined optimal water content, uniformly stirring, and covering the materials under natural conditions to obtain the improved expansive soil. The lime is added into the expansive soil, so that the performance of the expansive soil is improved, and the expansion rate of the expansive soil is reduced.
本发明涉及一种膨胀土的改良方法及施工方法，所述的膨胀土的改良方法是使用改良剂对膨胀土进行改良处理，所述的改良剂包括石灰，石灰的加入量为膨胀土质量的3‑10％，以上百分数均为质量百分数。具体改良步骤如下：(1)将改良剂和膨胀土混合均匀得到混合膨胀土；(2)按照《公路土工试验规程》JTG E40‑2007中重型击实试验确定混合膨胀土的最佳含水率；(3)按确定的最佳含水率的含水量添加水到步骤(1)得到的混合膨胀土中，搅拌均匀，在自然条件下闷料，得到改良膨胀土。本发明通过在膨胀土中加入石灰，改善了膨胀土的性能，使得膨胀土的膨胀率降低。
Improvement method and construction method of expansive soil
The invention relates to an improvement method and a construction method of expansive soil. The improvement method of the expansive soil is characterized in that the expansive soil is improved by using a modifier, the modifier comprises lime, the addition amount of the lime is 3%-10% of the mass of the expansive soil, and the above percentages are mass percentages. The improvement method comprises the following specific improvement steps of (1), uniformly mixing a modifier and expansive soil to obtain mixed expansive soil; (2), determining the optimal water content of the mixed expansive soil according to a heavy compaction test in "Road Geotechnical Test Regulations" JTG E40-2007; and (3), adding water into the mixed expansive soil obtained in the step (1) according to the determined optimal water content, uniformly stirring, and covering the materials under natural conditions to obtain the improved expansive soil. The lime is added into the expansive soil, so that the performance of the expansive soil is improved, and the expansion rate of the expansive soil is reduced.
本发明涉及一种膨胀土的改良方法及施工方法，所述的膨胀土的改良方法是使用改良剂对膨胀土进行改良处理，所述的改良剂包括石灰，石灰的加入量为膨胀土质量的3‑10％，以上百分数均为质量百分数。具体改良步骤如下：(1)将改良剂和膨胀土混合均匀得到混合膨胀土；(2)按照《公路土工试验规程》JTG E40‑2007中重型击实试验确定混合膨胀土的最佳含水率；(3)按确定的最佳含水率的含水量添加水到步骤(1)得到的混合膨胀土中，搅拌均匀，在自然条件下闷料，得到改良膨胀土。本发明通过在膨胀土中加入石灰，改善了膨胀土的性能，使得膨胀土的膨胀率降低。
Improvement method and construction method of expansive soil
一种膨胀土的改良方法及施工方法
KANG ZHITIAN (author) / LIU YUBO (author) / LI WU (author) / GU JIANYING (author) / LI GANG (author) / GENG JIDONG (author) / LUO SHUAI (author) / LU WEIJIAN (author) / WANG CHANGYOU (author) / SUN KUNPENG (author)
2021-12-21
Patent
Electronic Resource
Chinese
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