Resistance of plain and blended cement mortars exposed to severe sulfate attacks
Resistance of plain and blended cement mortars exposed to severe sulfate attacks
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DOI：
10.1016/j.conbuildmat.2010.11.106
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发表时间：
2011-06-01
影响因子：
7.4
通讯作者：
Oguchi, Chiaki T.
中科院分区：
文献类型：
--
作者：
Aye, Thidar;Oguchi, Chiaki T.
为了强调物理硫酸盐侵蚀对火山灰掺量的影响，采用10%Na2SO4和MgSO4溶液研究了普通水泥砂浆和混合水泥砂浆在四种曝光制度下的抗力，其中包括产生物理硫酸盐侵蚀的标准常规曝光和类场曝光。尽管在常规暴露制度下观察到混合水泥砂浆的性能更好，但在Na2SO4环境中促进物理硫酸盐侵蚀的暴露制度下，混合水泥砂浆的破坏更为严重。然而，硫酸镁的物理攻击并不明显。总体而言，在化学侵蚀方面，硫酸镁的危害性大于硫酸钠，但就物理侵蚀而言，硫酸钠的危害性大于硫酸镁。(C)2010爱思唯尔有限公司。保留所有权利。
To emphasize the effect of physical sulfate attack on pozzolanic additions, the resistance of plain and blended cement mortars was investigated using 10% Na2SO4 and MgSO4 solutions under four exposure regimes which included the standard conventional exposure and field-like exposures that created the physical sulfate attack. Although the performance of blended cement mortars was observed to be better under a conventional exposure regime, the damage in blended cement mortars was more severe under the exposure regimes that promoted the physical sulfate attack in a Na2SO4 environment. However, the physical attack by MgSO4 was not apparent. Overall, MgSO4 was found to be more damaging than Na2SO4 from the aspect of chemical attack; however Na2SO4 was more harmful than MgSO4 as far as the physical attack is considered. (C) 2010 Elsevier Ltd. All rights reserved.