Alginate biopolymers: Counteracting the impact of superabsorbent polymers on mortar strength

被引：94
|
作者：
Mignon, Arn [1 ,2 ]
Snoeck, Didier [1 ,2 ]
D'Halluin, Kenny [1 ]
Balcaen, Lieve [3 ]
Vanhaecke, Frank [3 ]
Dubruel, Peter [2 ]
Van Vlierberghe, Sandra [2 ]
De Belie, Nele [1 ]
机构：
[1] Univ Ghent, Dept Struct Engn, Magnel Lab Concrete Res, Technologiepk Zwijnaarde 904, B-9052 Ghent, Belgium
[2] Univ Ghent, Dept Organ & Macromol Chem, Polymer Chem & Biomat Res Grp, Krijgslaan 281,Bldg S4 Bis, B-9000 Ghent, Belgium
[3] Univ Ghent, Dept Analyt Chem, Atom & Mass Spect Res Grp, Krijgslaan 281,Bldg S12, B-9000 Ghent, Belgium
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 110卷
关键词：
Self-healing; Biopolymers; Alginate; Mortar; Workability; Bending strength; Compressive strength; Durability; Mechanical properties; Polymer; CEMENTITIOUS MATERIALS; AUTOGENOUS SHRINKAGE; CONCRETE; WATER; PERMEABILITY;
D O I：
10.1016/j.conbuildmat.2016.02.033
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Synthetic superabsorbent polymers (SAPs) are used in concrete for various applications. However, the addition of SAPs may lead to a significant decrease in mortar strength. In order to overcome this bottleneck, the present work focuses on the application of biopolymers as SAPs, more specifically polysaccharides including both uncross-linked sodium alginate as well as physically cross-linked calcium alginate. Interestingly, results indicate no or a limited (i.e. < 15%) reduction in strength upon introducing 1% relative to cement mass. Alginate can therefore be considered a promising material, not only for internal curing but even when high SAP amounts are required. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：169 / 174
页数：6
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