Influence of Freezing Temperature on Frost Heave Characteristics of Vegetation Growing Bases of Concrete

ZHOU Ming-tao; HU Huan; YANG ping; XU Wen-nian

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Influence of Freezing Temperature on Frost Heave Characteristics of Vegetation Growing Bases of Concrete

- Influence of Freezing Temperature on Frost Heave Characteristics of Vegetation Growing Bases of Concrete
- Bulletin of Soiland Water Conservation Vol. 32, Issue 4, Pages: 253-256(2013)
- 作者机构：
  
  三峡大学土木与建筑学院,湖北,宜昌,443002
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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ZHOU Ming-tao, HU Huan, YANG ping, et al. Influence of Freezing Temperature on Frost Heave Characteristics of Vegetation Growing Bases of Concrete[J]. Bulletin of Soiland Water Conservation, 2013, 32(4): 253-256.
DOI：

ZHOU Ming-tao, HU Huan, YANG ping, et al. Influence of Freezing Temperature on Frost Heave Characteristics of Vegetation Growing Bases of Concrete[J]. Bulletin of Soiland Water Conservation, 2013, 32(4): 253-256. DOI：

摘要

针对高寒气候条件下

因工程扰动造成的众多岩石裸露边坡亟待生态修复的现状

选取植被混凝土这一典型人造复合生态基材为研究对象

研究了冻结温度变化对其冻胀特性的影响。结果表明

植被混凝土作为弹塑性材料

在试验设定的负温环境中均将产生冻胀现象

其冻胀历时随冻结温度的升高逐渐增大

而冻胀率随冻结温度的降低呈极为显著的线性减小趋势;同一冻结温度条件与冻胀变形稳定时

在植被混凝土中将形成近似稳定的温度场

且试样中的温度降低幅度随着植被混凝土与冷源距离的增大逐步减弱;冻结温度场将明显改变水分在植被混凝土内的分布状况

冻结温度越低越不利于试样中水分的自由迁移。

Abstract

In the frigid area

the slope disturbed by the engineering projects was exposed with rocks

and needed ecological restoration urgently.Vegetation growing concrete chosen to be the typical compounded growing base material for the study to explore the influence of the freezing temperature on frost heave characteristics. The results show that as a elastic plastic material

all the vegetation growing concrete came up with frost heave under condition of given negative temperature

the development duration of frost heave increased with the rising of the freezing temperature while frost heave decreased slightly with the dropping of it.Under the same freezing temperature and the time of stable freezing

the approximate steady temperature field in the vegetation growing concrete was formed and the temperature drop gradually decreased with the increase of the distance between vegetation growing concrete and the source of coldness.Freezing temperature field significantly altered the moisture distribution in the growing base of concrete where the lower the temperature

the less freely the moisture moved.

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