Effect of microcrystalline cellulose on geopolymer and Portland cement pastes mechanical performance

被引：20

作者：

Ferreira, Saulo Rocha ^{[1
]}

Ukrainczyk, Neven ^{[2
]}

do Carmo e Silva, Keoma Defaveri ^{[1
]}

Silva, Luiz Eduardo ^{[3
]}

Koenders, Eduardo ^{[2
]}

机构：

[1] Univ Fed Lavras UFLA, Civil Engn Dept, POB 3037, BR-37200900 Lavras, MG, Brazil

[2] Tech Univ Darmstadt, Inst Construct & Bldg Mat, Franziska Braun Str 7, D-64287 Darmstadt, Germany

[3] Univ Fed Lavras, Forest Sci Dept, CP 3037, BR-37200000 Lavras, MG, Brazil

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 288卷 / 288期

关键词：

Microstructural properties; Mechanical performance; Metakaolin; Portland cement; Cubic compressive; Scale effect; FLY-ASH; SISAL FIBER; METAKAOLIN; COMPOSITES; CONCRETE; DURABILITY; ALKALINE; KINETICS; BEHAVIOR; INDUSTRY;

D O I：

10.1016/j.conbuildmat.2021.123053

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Geopolymers are presented as a new developing construction material and a potential alternative to ordinary binders, but there is a lack of data about several of their properties and behavior-joint-effect with cellulose is one example. The present study investigated the influence of Microcrystalline Cellulose (MCC) addition on the mechanical and microstructural properties of Portland cement and geopolymer pastes. The use of MCC increases compressive strength and stiffness at 7 days to both studied binders. After 28 days, the mechanical properties of the geopolymer paste are reduced due to MCC degradation. On the other hand, MCC addition accelerated geopolymer setting time by 15%, whereas on the cement paste yield a considerable delay effect. (c) 2021 Elsevier Ltd. All rights reserved.

引用

页数：9

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