Resistance of concrete with styrene-acrylate additive in low-pH environment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F19%3A00340356" target="_blank" >RIV/68407700:21610/19:00340356 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Resistance of concrete with styrene-acrylate additive in low-pH environment

Popis výsledku v původním jazyce

The paper shows results of a study focused on developing concrete with high resistance in low-pH environment. Low pH is experienced very often in agriculture industry (e.g. silage pits, silage troughs). The degradation of concrete in these conditions is very fast. Experimental part of the work was focused on using sealing additive based on styrene-acrylate polymer, which is directly added to concrete mixture at various concentrations. In total, 5 mixtures were measured in liquid environment with pH 3. Formic acid, which is often added to the silage pits as additive, was used for adjustment of pH. Degradation of concrete was evaluated using weight loss and depth of attack. Article also contains other results of measurement both for fresh and cured concrete (e.g. depth of penetration of pressurized water, compressive strength). Polymer addition significantly hindered penetration of pressurized water up to 50 % compared to reference concrete with no additive. Corrosion resistance of concrete in the low pH environment was increased due to amount of styrene-acrylate polymer addition.

Název v anglickém jazyce

Resistance of concrete with styrene-acrylate additive in low-pH environment

Popis výsledku anglicky

The paper shows results of a study focused on developing concrete with high resistance in low-pH environment. Low pH is experienced very often in agriculture industry (e.g. silage pits, silage troughs). The degradation of concrete in these conditions is very fast. Experimental part of the work was focused on using sealing additive based on styrene-acrylate polymer, which is directly added to concrete mixture at various concentrations. In total, 5 mixtures were measured in liquid environment with pH 3. Formic acid, which is often added to the silage pits as additive, was used for adjustment of pH. Degradation of concrete was evaluated using weight loss and depth of attack. Article also contains other results of measurement both for fresh and cured concrete (e.g. depth of penetration of pressurized water, compressive strength). Polymer addition significantly hindered penetration of pressurized water up to 50 % compared to reference concrete with no additive. Corrosion resistance of concrete in the low pH environment was increased due to amount of styrene-acrylate polymer addition.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/TH02020690" target="_blank" >TH02020690: Betony s mimořádnou odolností vůči působení agresivních médií</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Fib Congress 2018, Better, Smarter, Stronger

ISBN

978-1-877040-14-6

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

2186-2193

Název nakladatele

fib - fédération internationale du béton

Místo vydání

Lausanne

Místo konání akce

Melbourne

Datum konání akce

7. 10. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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