Dynamic Development Law of Expansive Soil Cracks Under Environmental Influence

IF 1.8 4区工程技术 Q3 ENGINEERING, CIVIL

International Journal of Civil Engineering Pub Date : 2024-02-09 DOI:10.1007/s40999-023-00938-x

Jianhua Guo, Gang Ding, Hanhui Wang

{"title":"Dynamic Development Law of Expansive Soil Cracks Under Environmental Influence","authors":"Jianhua Guo, Gang Ding, Hanhui Wang","doi":"10.1007/s40999-023-00938-x","DOIUrl":null,"url":null,"abstract":"<p>Crack propagation tests are conducted on expansive soil under various temperature (15 °C, 20 °C, 25 °C, and 30 °C) and relative humidity (31%, 43%, 52%, and 67%) conditions. An innovative method for determining the volumetric crack rate is proposed, and the following conclusions are drawn. (1) The rate of water evaporation in soil samples plays a decisive role in the expansion of apparent cracks in expansive soil. (2) The higher the environmental temperature is, the higher the cracking water content and the lower the stable water content. When the environmental humidity is high, the lower the cracking moisture content is, the higher the stable moisture content. (3) There is a unified law for the expansion of apparent cracks in expansive soil under different environmental factors. The variations in the plane crack rate over time under different conditions are found to conform to the logistic law. (4) The volumetric fracture rate is a key indicator that comprehensively reflects the degree of fracture development. With increasing environmental temperature, the fracture volume increases from 9 to 11%. With increasing environmental humidity, the fracture volume decreases from 10 to 7.5%. (5) When the evaporation of water and the exchange of air reach equilibrium, the moisture stress in the soil is balanced, and the cracks expand to a stable state.</p>","PeriodicalId":50331,"journal":{"name":"International Journal of Civil Engineering","volume":"185 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Civil Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s40999-023-00938-x","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

Crack propagation tests are conducted on expansive soil under various temperature (15 °C, 20 °C, 25 °C, and 30 °C) and relative humidity (31%, 43%, 52%, and 67%) conditions. An innovative method for determining the volumetric crack rate is proposed, and the following conclusions are drawn. (1) The rate of water evaporation in soil samples plays a decisive role in the expansion of apparent cracks in expansive soil. (2) The higher the environmental temperature is, the higher the cracking water content and the lower the stable water content. When the environmental humidity is high, the lower the cracking moisture content is, the higher the stable moisture content. (3) There is a unified law for the expansion of apparent cracks in expansive soil under different environmental factors. The variations in the plane crack rate over time under different conditions are found to conform to the logistic law. (4) The volumetric fracture rate is a key indicator that comprehensively reflects the degree of fracture development. With increasing environmental temperature, the fracture volume increases from 9 to 11%. With increasing environmental humidity, the fracture volume decreases from 10 to 7.5%. (5) When the evaporation of water and the exchange of air reach equilibrium, the moisture stress in the soil is balanced, and the cracks expand to a stable state.

Abstract Image

查看原文本刊更多论文

环境影响下膨胀土裂缝的动态发展规律

在不同温度（15°C、20°C、25°C 和 30°C）和相对湿度（31%、43%、52% 和 67%）条件下，对膨胀土进行了裂缝扩展试验。提出了一种测定体积裂缝率的创新方法，并得出以下结论。(1) 土样中的水分蒸发率对膨胀性土壤表观裂缝的扩展起着决定性作用。(2）环境温度越高，开裂含水量越高，稳定含水量越低。环境湿度大时，开裂含水量越低，稳定含水量越高。(3）不同环境因素下膨胀土表观裂缝的扩展有统一的规律。在不同条件下，平面裂缝率随时间的变化符合逻辑规律。(4）体积断裂率是综合反映断裂发展程度的关键指标。随着环境温度的升高，断裂体积从 9% 增加到 11%。随着环境湿度的增加，断裂体积从 10%下降到 7.5%。(5) 当水分蒸发和空气交换达到平衡时，土壤中的水分应力达到平衡，裂缝扩展到稳定状态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

3.90

自引率

5.90%

发文量

审稿时长

15 months

期刊介绍： International Journal of Civil Engineering, The official publication of Iranian Society of Civil Engineering and Iran University of Science and Technology is devoted to original and interdisciplinary, peer-reviewed papers on research related to the broad spectrum of civil engineering with similar emphasis on all topics.The journal provides a forum for the International Civil Engineering Community to present and discuss matters of major interest e.g. new developments in civil regulations, The topics are included but are not necessarily restricted to :- Structures- Geotechnics- Transportation- Environment- Earthquakes- Water Resources- Construction Engineering and Management, and New Materials.