Deformational properties of polymer concrete during long-term exposure to water

被引：4
|
作者：
Aniskevich, K [1 ]
Hristova, J
Jansons, J
机构：
[1] Univ Latvia, Inst Polymer Mech, LV-1006 Riga, Latvia
[2] Cent Lab Physiochem Mech, Sofia, Bulgaria
来源：
MECHANICS OF COMPOSITE MATERIALS | 2003年 / 39卷 / 02期
关键词：
creep; aging; water; polyester resin; polymer concrete;
D O I：
10.1023/A:1023401226872
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Changes in the elastic and viscoelastic (creep) characteristics of polymer concrete and its structural components (polyester resin, unfilled or filled with diabase flour) during a long-term exposure to water at 20degreesC were studied. Modeling the structural changes in polymer concrete with time showed an increase in the relative volume content of pores filled with water and a decrease in that of unfilled pores. Based on the free-volume concept and the data on swelling due to moistening and shrinkage due to physical aging of the binder, a rather accurate estimate of the time-moisture reduction function for polymer concrete was obtained. The function was found to be nonmonotonic:the interval of increase was followed by-an interval of decrease.
引用
收藏
页码：111 / 118
页数：8
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