Structural properties of quartz and their potential role for ASR

被引：81
作者：
Broekmans, MATM [1 ]
机构：
[1] Geol Survey Norway, Dept Mineral Resources, N-7491 Trondheim, Norway
来源：
MATERIALS CHARACTERIZATION | 2004年 / 53卷 / 2-4期
关键词：
quartz dissolution; crystal structure; crystal chemistry; ASR;
D O I：
10.1016/j.matchar.2004.08.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Quartz is the predominant silica polymorph in alkali-reactive aggregate materials. Being a major constituent of the Earth's crust as well, quartz is stable under a broad range of conditions including pressure, temperature, fluids present, postdeformation, etc. The conditions under which a particular quartz was formed are reflected in its qualities, including the crystal structural details and its (trace) element composition. However, current testing methods to determine the alkali-silica reaction expansion potential of aggregate materials do not address these qualities directly. To gain an idea which qualities affect the dissolution behavior of quartz under ASR conditions, it might be useful to first consider the geological conditions, and apply these to concrete. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码：129 / 140
页数：12
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