Mechanical and physical properties of flyash concrete after hydrothermal storage

Ehm, C.; Hinrichsmeyer, Konrad; Diederichs, Ulrich

doi:10.1016/0008-8846(87)90084-6

Cited by 2 publications

(1 citation statement)

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“…Haque, et al [13] reported that fly ash has little cementing efficiency at early ages and acts as filler material for the replacement of fine aggregate and also concluded that the strength properties were improved at later ages, without affecting the durability properties of the concrete. Ehm, et al [14] in their study focused on the removal of coarse size fractions from fly ash, which can result in a significant improvement of the concrete properties. Concrete made with processed fly ash showed good reduction of porosity and permeability.…”

Section: B Introductionmentioning

confidence: 99%

Strength Properties of Processed Fly Ash Concrete

Sivakumar¹,

Sounthararajan

2015

J. Eng. Technol. Sci.

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Abstract. The present paper reports on the mechanical treatment of fly ash for improving the delayed reactivity of fly ash with the hydration product of cement. Grinding of fly ash was carried out in a ball mill for different time durations and processing time was optimized for maximum fineness. Concrete mixes were prepared using various proportions of processed and unprocessed fly ash replacement in cement (25% and 50%). The influence of steel fiber addition on the mechanical properties of the concrete was studied for different curing periods. The test results on pozzolanic activity and lime reactivity indicate that the processed fly ash exhibited a higher strength gain than the unprocessed fly ash, with a maximum increase in compressive strength of up to 12%. Improved pozzolanic properties were noticed due to the increase in fineness of the fly ash particles.

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Section: B Introductionmentioning

confidence: 99%