The role of particle technology in developing sustainable construction materials

被引：215

作者：

Provis, John L. ^{[1
]}

Duxson, Peter ^{[2
]}

van Deventer, Jannie S. J. ^{[1
,2
]}

机构：

[1] Univ Melbourne, Dept Chem & Biomol Engn, Melbourne, Vic 3010, Australia

[2] Zeobond Pty Ltd, Somerton, Vic 3062, Australia

来源：

ADVANCED POWDER TECHNOLOGY | 2010年 / 21卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

Concrete; Geopolymer; Particle packing; Particle shape; Porosity; FLY-ASH; CONCRETE; PACKING; METAKAOLIN; MICROSTRUCTURE; GEOPOLYMERS; SIMULATION; BEHAVIOR; MODEL; WATER;

D O I：

10.1016/j.apt.2009.10.006

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper presents a brief review of the role of particle technology in the development Of low-CO2 aluminosilicate 'geopolymer' binders and concretes as an alternative to traditional Portland cement-based materials. The role of particle shape in particular is highlighted, both in the context of its effect on paste rheology and on water demand. The spherical particles of fly ash and the platy particles of metakaolin show opposite effects in each of these areas, and this must be understood and controlled if an effective geopolymer concrete is to be designed. The angular particles of blast furnace slag are also important in determining paste rheology and porosity. The selection of the correct combination of aggregate gradings is critical in maximising concrete durability, as the ability of aggregates to pack sufficiently densely in a hardened concrete product then hinders the ability of aggressive external agents to migrate into the concrete and cause structural damage to either the binder or the embedded steel reinforcing. (C) 2009 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

引用

页码：2 / 7

页数：6

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