Detail publikace

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

SOTIRIADIS, K. KOSÍKOVÁ, J. PETRÁNEK, V.

Originální název

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

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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 of sulfate 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 chlorides were present along with sulfates. Their mass was not be affected by chlorides. Fly ash was the most efficient material to improve limestone cement concrete's performance. Concrete with metakaolin suffered from significant damage after 55 months.

Klíčová slova

Durability, limestone cement, sulfate atack

Autoři

SOTIRIADIS, K.; KOSÍKOVÁ, J.; PETRÁNEK, V.

Rok RIV

2012

Vydáno

6. 12. 2012

Nakladatel

VUT v Brně

Místo

Brno

ISBN

978-80-214-4657-1

Kniha

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

Strany od

96

Strany do

105

Strany počet

10

BibTex

@inproceedings{BUT96678,
  author="Konstantinos {Sotiriadis} and Jana {Hodná} and Vít {Petránek}",
  title="LONG TERM EXPOSURE OF PORTLAND LIMESTONE CEMENT CONCRETE, CONTAINING OR NOT MINERAL ADMIXTURES, IN COMBINED CHLORIDE AND SULFATE ENVIRONMENT",
  booktitle="Proceedings of the Conference on the Rehabilitation and Reconstruction of Buildings CRRB 2012",
  year="2012",
  pages="96--105",
  publisher="VUT v Brně",
  address="Brno",
  isbn="978-80-214-4657-1"
}