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

页码：169 / 174

页数：6

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