STRENGTH AND DURABILITY OF RESIDENTIAL CONCRETES CONTAINING FLY ASH: A COLLECTION OF THREE PAPERS ON QUALITY ISSUES OF LEAN CONCRETES THAT CONTAIN FLY ASH
Compressive strength and resistance to deicer scaling of lean concretes containing fly ash were evaluated. Concretes were prepared at cement contents of 423, 517, and 564 lb/cu yd. Six fly ashes were used at cement replacement levels of 25 and 50% by mass. Specimens representative of residential flatwork were prepared and cured for one and seven days under moist conditions, then air-dried until initiation of testing. Compressive strength tests were conducted in accordance with ASTM C 39-86. Deicer scaling tests were conducted in accordance with ASTM C 672-84. Compressive strength results indicated that the fly ash concretes, in general, resulted in slower strength gain and lower ultimate strengths than corresponding mixtures without fly ash. Deicer scaling results indicated that all mixtures containing fly ash exhibited more rapid and severe scaling than those mixtures prepared with cement alone at the same total cementitious material content. Scaling was found to increase with a decrease in the total cementitious content of the mixture and an increase in the amount of cement replaced.
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Corporate Authors:
5420 Old Orchard Road
Skokie, IL United States 60077 -
Authors:
- WHITING, D
- Publication Date: 1989
Media Info
- Features: Figures; References; Tables;
- Pagination: 44 p.
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Serial:
- PCA Research and Development Bulletin
- Publisher: Portland Cement Association
Subject/Index Terms
- TRT Terms: Cement content; Compressive strength; Concrete; Deicers (Equipment); Durability; Fly ash; Laboratory tests; Lean concrete
- Uncontrolled Terms: Deicers; Scaling
- Old TRIS Terms: Lean mix concrete
- Subject Areas: Highways; Materials; Vehicles and Equipment; I32: Concrete;
Filing Info
- Accession Number: 00623683
- Record Type: Publication
- Report/Paper Numbers: RD099.01T
- Files: TRIS
- Created Date: Jul 31 1992 12:00AM