Theoretical study on the freeze resistance of concrete mixed with superabsorbent polymer (SAP) considering the reabsorption behavior of SAP

被引：5
|
作者：
Kim, Minsoo [1 ]
Moon, Juhyuk [2 ,3 ]
Hong, Sung-Gul [3 ,4 ]
机构：
[1] Korea Inst Ocean Sci & Technol, Coastal Dev & Ocean Energy Res Ctr, 385 Haeyang Ro, Busan 49111, South Korea
[2] Seoul Natl Univ, Dept Civil & Environm Engn, 1 Gwanak Ro, Seoul 08826, South Korea
[3] Seoul Natl Univ, Inst Construct & Environm Engn, 1 Gwanak Ro, Seoul 08826, South Korea
[4] Seoul Natl Univ, Dept Architecture & Architectural Engn, 1 Gwanak Ro, Seoul 08826, South Korea
来源：
JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS | 2023年 / 12卷 / 03期
关键词：
Superabsorbent polymer; absorbency; capillary pressure; solubility; freeze-thaw resistance; phase change; spacing factor; water pressure; HEALING CEMENTITIOUS MATERIALS; WATER PENETRATION;
D O I：
10.1080/21650373.2022.2050832
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study investigates the behavior of concrete with superabsorbent polymer (SAP) under freezing conditions. SAP particles absorb water and create air voids in hardened concrete upon releasing the absorbed water. The air voids are posited to improve the freeze resistance of concrete. While this phenomenon has been experimentally verified, a contradictory finding has also been reported. This study elucidates the conflicting observations by interpreting the water reabsorption behavior of SAPs in hardened concrete. Previous models have been modified considering the SAP characteristics in hardened concrete. Lastly, the optimal SAP content for enhanced freeze resistance are proposed.
引用
收藏
页码：292 / 304
页数：13
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