Effect of cellulose nanofibrils and nanocrystals on physical properties of concrete

被引：56
|
作者：
Barnat-Hunek, Danuta [1 ]
Szymanska-Chargot, Monika [2 ]
Jarosz-Hadam, Monika [3 ]
Lagod, Grzegorz [4 ]
机构：
[1] Lublin Univ Technol, Fac Civil Engn & Architecture, Nadbystrzycka 40, PL-20618 Lublin, Poland
[2] Inst Agrophys PAS, Doswiadczalna 4, PL-20290 Lublin, Poland
[3] Pope John Paul II State Sch Higher Educ Biala Pod, Fac Econ & Engn, Sidorska 95-97, PL-21500 Biala Podlaska, Poland
[4] Lublin Univ Technol, Fac Environm Engn, Nadbystrzycka 40B, PL-20618 Lublin, Poland
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 223卷
关键词：
Concrete; Nanocellulose; Freezing-thawing resistance; Surface free energy; Microstructure; SURFACE FREE-ENERGY; OF-THE-ART; MECHANICAL-PROPERTIES; NANOCELLULOSE; WASTE; DURABILITY; APPLE; CORROSION; BEHAVIOR; SOLIDS;
D O I：
10.1016/j.conbuildmat.2019.06.145
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The study on the physical properties and durability of concrete with admixture cellulose nanofibrils (ACNF) and cellulose nanocrystals (CCNC) was presented in the paper. The following characteristics of the concrete were defined: absorptivity, density, apparent density, open porosity, contact angle (CA), surface free energy (SFE), compressive strength, flexural tensile strength, freezing-thawing resistance. The use of ACNF and CCNC results in different wetting and adhesion properties of concrete. The highest CCNC addition yielded a concrete with the lowest CA with water and the highest SFE values that evidenced the increased adhesion properties and wettability. The microstructure of concrete with ACNF and CCNC and distribution of cracks and pores within them were investigated by scanning electron microscope (SEM). CCNC improves the freezing-thawing resistance. (C) 2019 Elsevier Ltd. All rights reserved.
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页码：1 / 11
页数：11
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