MICROSTRUCTURAL CHARACTERIZATION OF THE TRANSITION ZONE IN CEMENT SYSTEMS BY MEANS OF AC IMPEDANCE SPECTROSCOPY

被引：61

作者：

GU, P ^{[1
]}

XIE, P ^{[1
]}

BEAUDOIN, JJ ^{[1
]}

机构：

[1] NATL RES COUNCIL CANADA,INST RES CONSTRUCT,MAT SECT,OTTAWA K1A 0R6,ONTARIO,CANADA

来源：

CEMENT AND CONCRETE RESEARCH | 1993年 / 23卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0008-8846(93)90008-W

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The microstructure of the transition zone between aggregate and cement paste, and the effect of silica fume, slag , fly ash and latex (EVA) aggregate coatings were investigated by means of A.C. impedance measurements. It has been demonstrated experimentally that the A.C. impedance technique has the potential to describe microstructural changes of the cement-aggregate transition zone induced by surface modification of aggregate. Coatings of pozzolanic materials such as silica fume, slag, fly ash can increase the density of the transition zone. Latex coatings (eg. EVA) actually make the deposition of hydration products on the aggregate surfaces more difficult and give rise to a more porous cement-aggregate interfacial zone.

引用

页码：581 / 591

页数：11

共 18 条

[1]

BONANOS N, 1987, APPL IMPEDANCE SPECT, pCH4

[2]

BRANTERVIK K, 1991, CEMENT CONCRETE RES, V21, P469

[3]

CHRISTENSEN BJ, 1992, IN PRESS J MATER SCI

[4]

HUANG CY, 1985, J AM CONCRETE I, V82, P740

[5] ORIENTATION OF CALCIUM HYDROXIDE AT THE PORTLAND-CEMENT PASTE AGGREGATE INTERFACE IN MORTARS IN THE PRESENCE OF SILICA FUME - A CONTRIBUTION [J].

LARBI, JA ;

BIJEN, JMJM .

CEMENT AND CONCRETE RESEARCH, 1990, 20 (03) :461-470

[6]

MASO F, 1980, 7TH P INT C CHEM CEM, V1

[7] THE AC RESPONSE OF HARDENED CEMENT PASTE [J].

MCCARTER, WJ ;

BROUSSEAU, R .

CEMENT AND CONCRETE RESEARCH, 1990, 20 (06) :891-900

[8] IMPEDANCE MEASUREMENTS ON CEMENT PASTE [J].

MCCARTER, WJ ;

GARVIN, S ;

BOUZID, N .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1988, 7 (10) :1056-1057

[9] EFFECT OF CONDENSED SILICA FUME ON THE STEEL-CEMENT PASTE TRANSITION ZONE [J].

MONTEIRO, PJM ;

GJORV, OE ;

MEHTA, PK .

CEMENT AND CONCRETE RESEARCH, 1989, 19 (01) :114-123

[10]

PING G, 1992, IN PRESS CEM CONCR R

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