Freeze-thaw performance of phase change material (PCM) incorporated pavement subgrade soil

被引：84
|
作者：
Mahedi, Masrur [1 ]
Cetin, Bora [2 ]
Cetin, Kristen S. [3 ]
机构：
[1] Iowa State Univ, Dept Civil Construct & Environm Engn, 136 Town Engn Bldg, Ames, IA 50011 USA
[2] Iowa State Univ, Dept Civil Construct & Environm Engn, 494 Town Engn Bldg, Ames, IA 50011 USA
[3] Iowa State Univ, Dept Civil Construct & Environm Engn, 428 Town Engn Bldg, Ames, IA 50011 USA
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 202卷
关键词：
Freeze-thaw; Frost susceptibility; Heaving; Thaw weakening; Frozen soil; Pavement subgrade; THERMAL-ENERGY STORAGE; TEMPERATURE; FEASIBILITY; CONCRETE; STRENGTH; CEMENT;
D O I：
10.1016/j.conbuildmat.2018.12.210
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Phase Change Materials (PCMs) can store and release large amounts of energy in the form of latent heat during their phase changes, which could be utilized in controlling the freeze-thaw impact on pavement foundation systems. Untreated, and Class C fly ash-treated loess soil amended with three different dosages of paraffin-based liquid, and microencapsulated PCMs were evaluated using unconfined compression, volume change, and frost heave tests. The results of this research support the use of PCMs in controlling the freeze-thaw effect on subgrade soil. Further recommendations are provided on PCMs selection, composite type PCMs, incorporation method, and chemical stability. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：449 / 464
页数：16
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