Investigations about the influence of fine additives on the viscosity of cement paste for self-compacting concrete

被引：57

作者：

Diamantonis, N. ^{[1
]}

Marinos, I. ^{[2
]}

Katsiotis, M. S. ^{[1
]}

Sakellariou, A. ^{[3
]}

Papathanasiou, A. ^{[3
]}

Kaloidas, V. ^{[4
]}

Katsioti, M. ^{[1
]}

机构：

[1] NTUA, Sch Chem Engn, Athens 15773, Greece

[2] Heracles Gen Cement Co, Lycovrissi 14123, Attica, Greece

[3] Publ Power Corp, Testing Res & Stand Ctr, Attica, Greece

[4] Hellenic Cement Res Ctr Ltd, Heracles Grp, Lycovrissi 14123, Attica, Greece

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2010年 / 24卷 / 08期

关键词：

Fine additives; Cement paste; Plastic viscosity; Self-compacting concrete; Pore size distribution; LIMESTONE; SCC; MORTARS;

D O I：

10.1016/j.conbuildmat.2010.02.005

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this work, the effect of fine additives (limestone, silica fume, fly ash, pozzolan, nano-silica fume) on the plastic viscosity of cement paste is being investigated. Towards this direction, twenty-four samples were designed and produced. Those pastes consisted mainly of cement (type CEM I 42.5) and specific proportions of one or two fine additives. Plastic viscosity and yield stress were measured, as well as micro-structure of selected 28-days hardened samples was studied through means of mercury porosimetry. Results showed that limestone (40%) can improve the rheological behavior of cement pastes, and the synergy of limestone (20%) and fly ash (20%) can lead to higher packing density. Cement pastes that combine those two characteristics, could serve as the base for self-compacting concrete (SCC) production. (c) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1518 / 1522

页数：5

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[2]

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[3]

CLAUS P, 2006, ECOS M WARS 18 19 MA

[4]

EFNARC, 2005, European Federation Dedicated to Specialist Construction Chemicals and Concrete Systems: Specifications and Guidelines for Self-compacting Concrete

[5]

*FANN INSTR CO, 1996, VISC MAN

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