Effect of styrene-acrylate admixtures on the resistance of concrete to low pH

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F19%3A00335165" target="_blank" >RIV/68407700:21610/19:00335165 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.31808/5ca6e03c5ca4f0d406ac8898" target="_blank" >http://dx.doi.org/10.31808/5ca6e03c5ca4f0d406ac8898</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31808/5ca6e03c5ca4f0d406ac8898" target="_blank" >10.31808/5ca6e03c5ca4f0d406ac8898</a>

Result language

angličtina

Original language name

Effect of styrene-acrylate admixtures on the resistance of concrete to low pH

Original language description

The paper describes behavior of ternary gypsum-based composites, especially the changes of properties caused by the influence of moisture. The ternary gypsum-based mortar, composed of gypsum, hydrated lime, different types of pozzolan (silica fume, granul. blast slag, brick powder) and standard sand was investigated. Pozzolans in the mixture react with hydraulic lime and forms CSH phases in the material. Presence of these phases improves resistance of gypsum against the moisture. The way of samples storage affects the development of materials structure and properties of gypsum-based mortars. Therefore the samples were stored in two different environments, in the laboratory and under the water for period of 360 days. The basic physical and mechanical properties of samples stored in the laboratory environment and under the water are compared. The comparison of the TG curves, based on the samples of different age was carried out. The storage in the water has the greatest impact on the properties of all materials, especially on the mechanical properties. While the strength of pure gypsum mortar, stored in the water, decreased significantly and after one year in the water environment the samples were nearly destroyed, the samples with pozzolan admixtures evinced the improvement of mechanical properties, when stored in water.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/TH02020690" target="_blank" >TH02020690: The concrete with excellent resistance under aggressive media condition</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

9th International Conference On Concrete Under Severe Conditions - Environment and Loading - proceedings

ISBN

978-65-80633-00-5

ISSN

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e-ISSN

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Number of pages

7

Pages from-to

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Publisher name

Unisinos - Avenida Doutor Nilo Peçanha - Boa Vista

Place of publication

Porto Alegre

Event location

Porto Alegre

Event date

Jun 5, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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