问题
问答题 简答题
简述膨胀土的主要特性。
答案
参考答案:
土中粘粒成份主要由伊利石、蒙脱石等亲水性矿物组成;土的粘粒含量较高,一般大于30%;液限一般大于40%;土体湿度增高时,体积明显膨胀,并可形成膨胀压力;土体干燥失水时,土体收缩,并形成收缩裂缝;膨胀、收缩变形可随环境变化往复发生,导致土的强度衰减。
简述膨胀土的主要特性。
参考答案:
土中粘粒成份主要由伊利石、蒙脱石等亲水性矿物组成;土的粘粒含量较高,一般大于30%;液限一般大于40%;土体湿度增高时,体积明显膨胀,并可形成膨胀压力;土体干燥失水时,土体收缩,并形成收缩裂缝;膨胀、收缩变形可随环境变化往复发生,导致土的强度衰减。
用方框内所给单词的适当形式填空,每个单词限用一次。 | |
2. They are very _______ to us students. 3. Her _______ problem is that she can't sleep well at night. 4. He is _______ in my story book. 5. My father always spends too much time _______ TV. 6. I _______ don't know anything about him. 7. Do you like _______ pictures. 8. He spends a lot of time _______ games every day. 9. E-mail English is great for writing _______. 10. My partner used to be afraid of _______ alone. |