Impact of admixtures used in underwater concrete on cement hydration process and rheological properties

被引：0

作者：

Matuszek-Chmurowska, Aneta ^{[1
]}

Kaleta-Jurowska, Alina ^{[1
]}

Jurowski, Krystian ^{[1
]}

Grzeszczyk, Stefania ^{[1
]}

机构：

[1] Opole Univ Technol, Fac Civil Engn & Architecture, Dept Bldg Mat Engn, PL-45061 Opole, Poland

来源：

SCIENTIFIC-TECHNICAL CONFERENCE: E-MOBILITY, SUSTAINABLE MATERIALS AND TECHNOLOGIES (MATBUD'2020) | 2020年 / 322卷

关键词：

D O I：

10.1051/matecconf/202032201030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents test results of the impact of chemical admixtures used in the underwater concrete technology, i.e. a superplasticizer (SP), an anti-wash admixture (AWA) and SiO2 nanoparticles (NP) on the cement hydration process, rheological properties and the setting time. The impact of admixtures was tested in combination and separately, with the use of microcalimetry, X-ray diffraction (XRD) and rheology. It was demonstrated that AWA and SP admixtures caused a delay of the hydration process, while the impact of SP was much greater. The above statement was also confirmed by results of rheological tests. Combined application of AWA, SP and NP causes even a larger delay of the hydration process and the increase of paste rheological parameters, with the impact of the superplasticizer particularly visible.

引用

页数：11

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