Concrete freeze/thaw as studied by magnetic resonance imaging

被引：55

作者：

Prado, PJ

Balcom, BJ

Beyea, SD

Bremner, TW

Armstrong, RL

Grattan-Bellew, PE

机构：

[1] Univ New Brunswick, Dept Phys, MRI Ctr, Fredericton, NB E3B 5A3, Canada

[2] Univ New Brunswick, Dept Civil Engn, MRI Ctr, Fredericton, NB E3B 5A3, Canada

[3] Natl Res Council Canada, Inst Res Construct, Ottawa, ON K1A 0R6, Canada

来源：

CEMENT AND CONCRETE RESEARCH | 1998年 / 28卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/S0008-8846(97)00222-6

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A recently developed magnetic resonance imaging (MRI) technique is used to study the concrete freeze/thaw process. Ice formation is spatially resolved in a nondestructive manner as changes in the MRI signal intensity are observed. The phase transition temperatures are in agreement with published differential scanning calorimetry thermograms. The concrete samples were air dried for varying times. The imaging of both saturated and non-saturated specimens demonstrates the ability to monitor non-adsorbed water in a range of pore sizes. The freeze/thaw thermodynamic behaviour was found to depend on water content and sample history. (C) 1998 Elsevier Science Ltd.

引用

页码：261 / 270

页数：10

共 51 条

[1] SOLID-STATE NMR IMAGING OF IRREDUCIBLE WATER IN RESERVOIR CORES FOR SPATIALLY-RESOLVED PORE SURFACE RELAXATION ESTIMATION [J].