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

被引：94

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

页码：449 / 464

页数：16

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