Investigation on early hydration of ternary Portland cement-blast-furnace slag-metakaolin blends

被引：99

作者：

Bohac, Martin ^{[1
]}

Palou, Martin ^{[1
]}

Novotny, Radoslav ^{[1
]}

Masilko, Jiri ^{[1
]}

Vsiansky, Dalibor ^{[2
]}

Stanek, Theodor ^{[3
]}

机构：

[1] Brno Univ Technol, Fac Chem, Brno 61200, Czech Republic

[2] Masaryk Univ, Fac Sci, Dept Geol Sci, CS-61137 Brno, Czech Republic

[3] JSC, Res Inst Bldg Mat, Brno 61700, Czech Republic

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 64卷

关键词：

Ternary system; Portland cement; Metakaolin; Blast-furnace slag; Hydration; AUTOGENOUS SHRINKAGE; POZZOLANIC ACTIVITY; SILICA FUME; FLY-ASH; CALORIMETRY; COMPOSITES; PASTES;

D O I：

10.1016/j.conbuildmat.2014.04.018

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The paper investigates the hydration of ternary blends comprising Portland cement, blast-furnace slag and metakaolin. The isothermal calorimetry and "in situ" X-ray diffraction was used to evaluate the effect of metakaolin and blast-furnace slag on the early hydration of blends. XRD, DTA and SEM were used to analyze the hardened paste after 1 month of hydration. Metakaolin influences significantly the kinetics, mechanism and products of hydration at initial period of hydration causing the rapid formation of ettringite. Hemicarbonate aluminate hydrate is formed as a product of ettringite conversion due to the presence of reactive calcite in Portland cement. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：333 / 341

页数：9

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