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Title: The effect of fly ash on the sulfate resistance of concrete

Abstract

The durability of concrete is determined by its ability to endure the physical and environmental surroundings without losing the functional properties and structural integrity of the original design. Concrete containing fly ash can be proportioned to meet the durability requirements of a wide range of applications, such as concrete for mass structures, pavements, structural members, and high strength applications. One area where the long term performance of concrete containing fly ash is not clearly understood is in sulfate environments. The sulfate attack mechanism in concrete containing fly ash has been related in recent years to the mineralogical and chemical composition of the cementitious and pozzolanic material. This study investigated the interrelationship between the physical, mineralogical and chemical characteristics of portland cement, fly ash, and their proportions, and the sulfate resistance of concrete containing fly ash. Eighteen fly ashes and five portland cements have been studied at four levels of volumetric replacement of fly ash for portland cement. Other variables studied were workability, air content, curing conditions, and permeability. The fly ashes were characterized by performing chemical, physical and mineralogical analyzes. Over 700 specimens were submerged in a 10 percent sodium sulfate solution. The specimens were measured for expansion, mass change,more » and cracking. The study has revealed a strong correlation between the glassy composition of fly ash and the sulfate resistance of concrete.« less

Authors:
Publication Date:
Research Org.:
Texas Univ., Austin, TX (USA)
OSTI Identifier:
6202996
Resource Type:
Miscellaneous
Resource Relation:
Other Information: Thesis (Ph.D)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 36 MATERIALS SCIENCE; CONCRETES; WASTE PRODUCT UTILIZATION; WEAR RESISTANCE; FLY ASH; AIR; CHEMICAL COMPOSITION; CHEMICAL PROPERTIES; COAL; COMBUSTION; CORRELATIONS; CORROSIVE EFFECTS; CRACKS; CURING; EXPANSION; MINERALOGY; PERMEABILITY; PHYSICAL PROPERTIES; PORTLAND CEMENT; QUANTITY RATIO; SODIUM SULFATES; SULFATES; AEROSOL WASTES; ALKALI METAL COMPOUNDS; ASHES; BUILDING MATERIALS; CARBONACEOUS MATERIALS; CEMENTS; CHEMICAL REACTIONS; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FUELS; GASES; MATERIALS; MECHANICAL PROPERTIES; OXIDATION; OXYGEN COMPOUNDS; RESIDUES; SODIUM COMPOUNDS; SULFUR COMPOUNDS; THERMOCHEMICAL PROCESSES; WASTES; 010800* - Coal, Lignite, & Peat- Waste Management; 360604 - Materials- Corrosion, Erosion, & Degradation

Citation Formats

Tikalsky, P J. The effect of fly ash on the sulfate resistance of concrete. United States: N. p., 1989. Web.
Tikalsky, P J. The effect of fly ash on the sulfate resistance of concrete. United States.
Tikalsky, P J. 1989. "The effect of fly ash on the sulfate resistance of concrete". United States.
@article{osti_6202996,
title = {The effect of fly ash on the sulfate resistance of concrete},
author = {Tikalsky, P J},
abstractNote = {The durability of concrete is determined by its ability to endure the physical and environmental surroundings without losing the functional properties and structural integrity of the original design. Concrete containing fly ash can be proportioned to meet the durability requirements of a wide range of applications, such as concrete for mass structures, pavements, structural members, and high strength applications. One area where the long term performance of concrete containing fly ash is not clearly understood is in sulfate environments. The sulfate attack mechanism in concrete containing fly ash has been related in recent years to the mineralogical and chemical composition of the cementitious and pozzolanic material. This study investigated the interrelationship between the physical, mineralogical and chemical characteristics of portland cement, fly ash, and their proportions, and the sulfate resistance of concrete containing fly ash. Eighteen fly ashes and five portland cements have been studied at four levels of volumetric replacement of fly ash for portland cement. Other variables studied were workability, air content, curing conditions, and permeability. The fly ashes were characterized by performing chemical, physical and mineralogical analyzes. Over 700 specimens were submerged in a 10 percent sodium sulfate solution. The specimens were measured for expansion, mass change, and cracking. The study has revealed a strong correlation between the glassy composition of fly ash and the sulfate resistance of concrete.},
doi = {},
url = {https://www.osti.gov/biblio/6202996}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1989},
month = {Sun Jan 01 00:00:00 EST 1989}
}

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