Monitoring the Influence of Aminosilane on Cement Hydration Via Low-field NMR Relaxometry

被引：12

作者：

Pop, Alexandra ^{[1
]}

Bede, Andrea ^{[1
]}

Dudescu, Mircea Cristian ^{[1
]}

Popa, Florin ^{[1
]}

Ardelean, Ioan ^{[1
]}

机构：

[1] Tech Univ, Dept Chem & Phys, Cluj Napoca 400114, Romania

来源：

APPLIED MAGNETIC RESONANCE | 2016年 / 47卷 / 02期

关键词：

NUCLEAR-MAGNETIC-RESONANCE; WATER-CONTENT; POROUS-MEDIA; GRAY CEMENT; RELAXATION; PASTES; DIFFUSION; IMPURITIES; GRADIENTS; SIZE;

D O I：

10.1007/s00723-015-0743-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Nuclear magnetic resonance (NMR) relaxometry is used here as a noninvasive tool to monitor the influence introduced by the addition of 3-Aminopropyltriethoxysilane (APTES) on the hydration of pure cement paste and a cement paste containing quartz powder. It is observed extension of the dormancy stage up to 12 h in the presence of the aminosilane and a slight reduction in the size of capillary pores. The extension of the dormancy stage can be also associated with a slower hydration process which leads to enhancement of the final flexural strength in the case of sample containing quartz.

引用

页码：191 / 199

页数：9

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