Optimal use of flocculants on the manufacture of fibre cement materials by the Hatschek process

被引：14

作者：

Blanco, A. ^{[1
]}

Fuente, E. ^{[1
]}

Alonso, A. ^{[1
]}

Negro, C. ^{[1
]}

机构：

[1] Univ Complutense Madrid, Fac Chem, Dept Chem Engn, E-28040 Madrid, Spain

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2010年 / 24卷 / 02期

关键词：

Fibre-cement; Hatschek process; Flocculation; Fibre/matrix bond; Retention; PARTICLE-SIZE DISTRIBUTION; CHORD LENGTH MEASUREMENTS; BENDING STRENGTH; COMPOSITES; AGENTS; SUPERPLASTICIZERS; SEDIMENTATION; BEHAVIOR; PASTE;

D O I：

10.1016/j.conbuildmat.2007.06.017

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper is focused in the description of a new real-time methodology for flocculant selection in the fibre-cement manufacture based on studying flocculation and floc properties with a focused beam reflectance measurement (FBRM). Results were supported and confirmed by particle vision and measurement (PVM) analysis. Opposite effects of polyacrylamides characteristics on fibre cement flocculation and on final product were found: charge density resulted in increased product strength when dosage of polymer was low but decreased it at high dosages. The feasibility of using artificial neural networks (ANNs) to predict mechanical properties of fibre cement composites from the flocculation data obtained by in-line measurement in a Hatschek machine by the FBRM sensor is reported. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：158 / 164

页数：7

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