LONG TERM EXPOSURE OF PORTLAND LIMESTONE CEMENT CONCRETE, CONTAINING OR NOT MINERAL ADMIXTURES, IN COMBINED CHLORIDE AND SULFATE ENVIRONMENT

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F12%3APU101590" target="_blank" >RIV/00216305:26110/12:PU101590 - 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

LONG TERM EXPOSURE OF PORTLAND LIMESTONE CEMENT CONCRETE, CONTAINING OR NOT MINERAL ADMIXTURES, IN COMBINED CHLORIDE AND SULFATE ENVIRONMENT

Popis výsledku v původním jazyce

In this paper the long term behaviour of limestone cement concrete, stored in chloridesulfate environment, was investigated. Concrete specimens were prepared by using an ordinary Portland cement and two different Portland limestone cements, as well as natural pozzolana, fly ash, blastfurnace slag or metakaolin, and were stored in solutions of various sulfate and chloride contents at 5 o C. Visual assessment, mass measurements and XRD analysis took place. The higher contents of limestone in cement and ofsulfate in storage solutions resulted in more intensive concrete damage. Thaumasite was the main deterioration product. The use of mineral admixtures improved the behaviour of limestone cement concrete. After 24 months of exposure, chlorides delay the deterioration of limestone cement concretes caused by sulfates. After 55 months, the presence of chlorides led to a greater mass loss. The specimens containing mineral admixtures showed more intensive deterioration at 24 months when chlori

Název v anglickém jazyce

LONG TERM EXPOSURE OF PORTLAND LIMESTONE CEMENT CONCRETE, CONTAINING OR NOT MINERAL ADMIXTURES, IN COMBINED CHLORIDE AND SULFATE ENVIRONMENT

Popis výsledku anglicky

In this paper the long term behaviour of limestone cement concrete, stored in chloridesulfate environment, was investigated. Concrete specimens were prepared by using an ordinary Portland cement and two different Portland limestone cements, as well as natural pozzolana, fly ash, blastfurnace slag or metakaolin, and were stored in solutions of various sulfate and chloride contents at 5 o C. Visual assessment, mass measurements and XRD analysis took place. The higher contents of limestone in cement and ofsulfate in storage solutions resulted in more intensive concrete damage. Thaumasite was the main deterioration product. The use of mineral admixtures improved the behaviour of limestone cement concrete. After 24 months of exposure, chlorides delay the deterioration of limestone cement concretes caused by sulfates. After 55 months, the presence of chlorides led to a greater mass loss. The specimens containing mineral admixtures showed more intensive deterioration at 24 months when chlori

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/EE2.3.30.0005" target="_blank" >EE2.3.30.0005: Podpora tvorby excelentních týmů mezioborového výzkumu na VUT</a><br>

Návaznosti

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

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the Conference on the Rehabilitation and Reconstruction of Buildings CRRB 2012

ISBN

978-80-214-4657-1

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

96-105

Název nakladatele

VUT v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

6. 11. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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