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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: High Lime Fly Ash as a Cementing Agent
Author(s): Michael G. Sullentrup
and James W. Baldwin, Jr.
Publication: Special Publication
Appears on pages(s): 321-332
Keywords: abrasion resistance;
(mass/volume); drying shrinkage
hydration; lime fly ash; pozzol ---
; fly ash; -- an cements;
e str ength;den
freez e-thaw du
Abstract:Modern power plants burning Wyoming low-sulfur coal produce fly ash which possesses cementitious properties in its own right. In regions where large tonnages of this material must be wasted, its cost may be even lower than that of aggregate. For certain applications it may be feasible to make concrete which utilizes this fly ash either as the only cementing agent or as the sole constituent. An experimental study was conducted to determine mechanical properties of this type concrete as related to its potential for use in agricultural erosion-control structures, Four series of laboratory tests were conducted with W/F (water to fly ash) and S/F (sand to fly ash) ratios as primary variables. 1. A series of 240 fifty-one mm by 102mm cylinders to determine 7, 14, 28, 56 and 112 day compressive strength. 2. A series of fifty-eight 51 x 51 x 260mm prisms for ASTM C-666 freeze-thaw and ASTM C-418 abrasion resistance tests. 3. Thirty-six 25 x 25 x 250mm prisms for ASTM C-596 shrinkage determination. 4. Relative heat of hydration rates were measured in nine mixes. Unit weights varied from 1900 kg/m 3 for fly ash alone to 2350 kg/m3 for sand-fly ash mixtures. Compressive strengths as high as 47 MPa were realized with fly ash alone while sand-fly ash mixtures reached strengths as high as 46 MPa. .
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