[1]文 武,庄心善,赵奕杨,等. PVA（聚乙烯醇）改良膨胀土强度性能试验研究[J].湖北工业大学学报,2023,(1):90-93.
　WEN Wu,ZHUANG Xinshan,ZHAO Yiyang,et al. Experimental Research on Strength Performance of PVA (Polyvinyl Alcohol) Improved Expansive Soil[J].,2023,(1):90-93.
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 PVA（聚乙烯醇）改良膨胀土强度性能试验研究()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2023年第1期
页码:
90-93
栏目:
湖北工业大学学报
出版日期:
2023-03-13

文章信息/Info

Title:
 Experimental Research on Strength Performance of PVA (Polyvinyl Alcohol) Improved Expansive Soil
文章编号:
1003-4684(2023)01-0090-04
作者:
 文 武;  庄心善 ;  赵奕杨;  聂去尘
 湖北工业大学土木建筑与环境学院，湖北 武汉 430068
Author(s):
 WEN Wu;  ZHUANG Xinshan;  ZHAO Yiyang;  NIE Quchen
 School of Civil Engin.,Architecture and Environment, Hubei Univ. of Tech., Wuhan 430068,China
关键词:
 ; 膨胀土;  PVA（聚乙烯醇）;  应力-应变;  抗剪强度
Keywords:
 ; Expansive soil;  PVA (polyvinyl alcohol);  stress-strain;  shear strength
分类号:
TU 411
文献标志码:
A
摘要:
 PVA（聚乙烯醇）作为一种高分子聚合物，可利用其强粘结性改良膨胀土，提高改良土强度降低其膨胀性。通过三轴试验，研究不同PVA含量对膨胀土性质的影响，试验发现：围压相同时，随着PVA含量增大，改良土强度与内摩擦角呈先增大后减小的趋势；黏聚力先增大后趋于稳定。在相同围压下，当PVA含量为3%，膨胀土的主应力之差达到最大，3%为PVA的最佳含量。掺量相同时，PVA含量0%、1%、2%、3%、4%改良土条件下，围压300 kPa较围压100 kPa时，强度提高39%、36%、29%、32%、31%。
Abstract:
 PVA (polyvinyl alcohol), as a high molecular polymer, can use its strong cohesiveness to improve expansive soil, increase the strength of the modified soil and reduce its expansibility. Through the triaxial test, the effect of different PVA content on the properties of expansive soil was studied. The test found that when the confining pressure is the same, as the PVA content increases, the strength and internal friction angle of the modified soil increase first and then decrease; The force increases first and then stabilizes. Under the same confining pressure, when the PVA content is 3%, the difference between the principal stresses of the expansive soil reaches the maximum, and 3% is the optimal content of PVA. When the content of PVA is the same, when the PVA content is 0%, 1%, 2%, 3%, 4% modified soil, the confining pressure of 300KPa is compared with the confining pressure of 100KPa, the strength is increased by 39%, 36%, 29%, 32%, 31%.

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备注/Memo

备注/Memo:
［收稿日期］ 2021-10-15
［第一作者］ 文 武（1996-），男，湖北荆门人，湖北工业大学硕士研究生，研究方向为岩土工程
［通信作者］ 庄心善（1964-），男，河南周口人，湖北工业大学教授，研究方向为岩土工程及边坡工程
更新日期/Last Update: 2023-03-14