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Title:

EFFECT OF SULFUR TRIOXIDE CONTENT ON CONCRETE STRUCTURES USING FLORIDA MATERIALS
Cover of EFFECT OF SULFUR TRIOXIDE CONTENT ON CONCRETE STRUCTURES USING FLORIDA MATERIALS

Accession Number:

00989311

Record Type:

Monograph

Abstract:

In this study, several ASTM portland cements were used to address effects of increasing sulfur trioxide (SO3) content of cement on the performance and durability of concrete. The cements were analyzed for their mineralogical content using x-ray diffraction. Several other characterization techniques were used including: calorimetric studies, fineness, quantitative x-ray analysis and oxide chemical composition. The findings indicate that increasing SO3 content increases expansion in lime and sulfate. The amount of expansion experienced by mortar appears to be dependent on the mineralogical composition of cements. Additionally, increasing SO3 content increases strength loss for mortar exposed to sodium sulfate solution. Drying shrinkage measurements indicate that increasing SO3 beyond 3% increases the drying shrinkage for all cements. Concrete strength data indicate that for cements low in alkali and aluminate content, increasing the SO3 to 3.6% increases the strength loss at 180 days. Additionally, deterioration appears to be dependent on tricalcium silicate content of the cement. For cements moderate in tricalcium aluminate and alkalis, increasing tricalcium silicate content rendered cements less tolerant to higher SO3 content. It is recommended that SO3 content should not be allowed to increase above the current specified limits.

Report Numbers:

Report No. 0510754,
Final Report

Contract Numbers:

BC-353 RPWO #31

Language:

English

Corporate Authors:

University of South Florida, Tampa

Department of Civil and Environmental Engineering, 4202 East Fowler Avenue
Tampa, FL 33620 USA

Florida Department of Transportation

605 Suwannee Street
Tallahassee, FL 32399-0450 USA

Federal Highway Administration

1200 New Jersey Avenue, SE
Washington, DC 20590 USA

Authors:

Zayed, A M
Brown, K
Hanhan, A

Pagination:

93 p.

Publication Date:

2004-10

Period Covered:

0109-0410

Features:

Figures (93) ; References (19) ; Tables (12)

Uncontrolled Terms:

Sulfur trioxide content

Subject Areas:

Highways; Materials; I32: Concrete

Files:

TRIS

Last Modified:

May 9 2009 12:11AM