Proton spin-lattice relaxation study of the hydration of self-stressed expansive cement

被引：19

作者：

Apih, T ^{[1
]}

Lahajnar, G

Sepe, A

Blinc, R

Milia, F

Cvelbar, R

Emri, I

Gusev, BV

Titova, LA

机构：

[1] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia

[2] NCSR Demokritos, GR-15310 Athens, Greece

[3] Univ Ljubljana, Ctr Expt Mech, SI-1125 Ljubljana, Slovenia

[4] Int Acad Engn, RU-103905 Moscow, Russia

来源：

CEMENT AND CONCRETE RESEARCH | 2001年 / 31卷 / 02期

关键词：

hydration; NMR; 3CaO(.)3Al(2)O(3)(.)CaSO(4); high performance concrete;

D O I：

10.1016/S0008-8846(00)00460-9

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Proton spin-lattice relaxation, compressive strength, and water tightness measurements have been undertaken in order to study the hydration process and the mechanical properties of Portland cement modified with a calcium sulfoaluminate-based expansive additive (EXPAD). The compression strength of the modified cement was more than 70% higher while water permeability was about 60% smaller than in the unmodified cement. Magnetization-recovery curves analysis allowed for a time-resolved monitoring of both the increase of the internal surface as well as the formation of solid products during the hydration. A significant difference between the hydration kinetics of modified and unmodified cement was observed. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：263 / 269

页数：7

共 16 条

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[3]

BLINC R, 1988, Z NATURFORSCH A, V43, P1026

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