土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (6): 732-735.

• 测试技术 • 上一篇    下一篇

红黏土吸水增重及其对崩解试验的影响

张炳晖1，谢艳华2，刘 磊1，刘宝臣1，曾庆建3，肖适德4   

  1. (1.桂林理工大学土木与建筑工程学院，广西桂林 541004；2.桂林航天工业学院，广西桂林 541004；3.广西建设职业技术学院，南宁 530007；4.中铁二十四局集团有限公司，上海 200071)
  • 收稿日期:2019-12-21 修回日期:2019-12-28 出版日期:2020-12-30 发布日期:2020-12-25
  • 通讯作者: 谢艳华（1986-），女，高级讲师/工程师，硕士，研究方向为环境岩土工程和地质灾害防治工程。
  • 作者简介:张炳晖（1983-），男，工程师，硕士，研究方向为环境岩土工程、地质灾害防治工程。
  • 基金资助:
    国家自然科学基金(11562007),桂科能基金（16-J-21-6）

Water Absorption of Red Clay and its Influence on the Slaking Test

ZHANG Binghui1， XIE Yanhua2， LIU Lei1， LIU Baochen1， ZENG Qingjian3， XIAO Shide4   

  1. (1.College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004;
    2.Guilin University of Aerospace Technology， Guilin 541004；
    3.Guangxi Polytechnic of Construction， Nanning 530007；
    4.China Railway 24th Bureau Group Co. Ltd., Shanghai 200071)
  • Received:2019-12-21 Revised:2019-12-28 Online:2020-12-30 Published:2020-12-25

摘要： 红黏土湿化崩解过程中存在吸水增重现象，这会影响土体崩解量的测量及计算。为研究红黏土的吸水增重作用，在不同水温下对不同含水率红黏土试样进行吸水试验。试验结果表明，吸水作用会影响崩解量的测量结果，低含水率的试样会出现“负崩解量”，使测量得到的崩解平均速率相对实际情况偏低。吸水速率及总吸水量与水温呈正相关、与土体含水率呈负相关；当试样的含水率达到18%时，吸水作用对于红黏土崩解的影响基本消失。

关键词: 红黏土, 吸水作用, 崩解量

Abstract: During the red clay slaking, the weight increase during the water absorption will affect the accurate measurement the soil slaking property. In order to study the effect of water absorption and weight increase on the slaking of the red clay, water absorption tests were conducted under different water temperatures. The experimental results show that the water absorption will affect the slaking measurement results, and the samples with low water content will have negative slaking. The water absorption will result in a low average slaking rate. The water absorption of the red clay sample is affected by the moisture content of the soil and the water temperature. The water absorption rate and the total water absorption increase with the increase of temperature; The water absorption rate and the total water absorption increase with the decrease of soil moisture content; When the moisture content of the sample reaches 18%, the influence of water absorption on the slaking of the red clay could not be measured.

Key words: Red Clay, Water Absorption, Slaking Quantity

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