Research Articles | Challenge Journal of Concrete Research Letters

The Effect of Different Mineral Admixtures on Characteristics of Concrete

Salahaldein Alsadey Mohamed

Abstract


This paper presents a review of the properties of fresh and hardened concrete by using mineral admixtures fly ash (FA), and silica fume (SF). In manycountries, these materials are already used in manufacturing of concrete. However, these industrial by products is becoming popular throughout the world because of the minimization of their potential hazardous effects on environment. Some of these materials used as replacement for cement. Ultimately it results in the reduction of the cost manufacturing of concrete and reduces environmental pollution. In general, small particle size and higher specific surface area of mineral admixture are favorable to produce highly dense and impermeable concrete; however, they cause low workability and demand more water.  To study the effect of mineral admixtures such as fly ash and silica fume on mechanical properties of concrete under the uniaxial compression experimental studies conducted. The cement was replaced by 10 %, 20 % and 30 % with fly ash and silica fume. The compressive strength test conducted on concrete specimen with different percentages of fly ash and silica fume at age of 7 days and 28 days.


Keywords


slump; compressive strength; fly ash; silica fume

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References


ASTM C593- 95. “West Conshohocken, PA: American Society for Testing and Materials”.

Malhotra, V.M., Proceeding 1st international conference on the use of Fly Ash, Slag, Silica fume and other material by product in concrete 1983.

Reshi S.S and Garg, S.K., “Proportioning concrete containing fly ash”, the IEI journal, 1964, vol.45.

Zhang M.H and Malhotra, V.M., “Making concrete greener with Fly ash”, Indian Concrete Journal, Oct 1999, pp 609-615.

ACI Committee 211, “Guide for selecting proportions for HSC with Portland cement and fly ash”, ACI material journal vol-90, No.3. 1993, pp 273-283. ACI Committee 363, “State of art report on high strength concrete”, ACI Journal, Vol- 81, No.4, 1984, pp366-411.

British Standard Institution, BS 1881: Part 102 (1983). “Methods for Determination of Slump”.

British Standard Institution, BS 1881: Part 116 (1983). “Methods for Determination of Compressive Strength of Concrete Cube”.


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