Strength development of mortar and concrete containing fly ash

A review

M. R. Karim, Muhammad Fauzi Mohd. Zain, Maslina Jamil, F. C. Lai, M. N. Islam

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Among the construction materials; concrete, steel, timber and glass, concrete has gained popularity all over the world due to its durable properties in normal environment and easiest construction procedure. Compare to others constituent, cement performs a vital role for the production of concrete. Due to continuous increasing demand and the cost of cement, recently, the utilization of supplementary cementing materials such as industrial by-product (fly ash, silica fume and slag) and agricultural wastes (rice husk ash, palm oil fuel ash, bagasse ash and ash from timber) has become an important issue for the researchers in concrete industry. Fly ash (FA), one of these valuable industrial wastes, is generated as by-product from power generating industry. The production of FA increases every year, it is disposed for landfills without any commercial gain and now becomes a trouble. It contains a non- crystalline silicon dioxide with high specific surface area and high pozzolanic reactivity. Huge researches have been carried out for the use of pozzolans, mainly waste pozzolans such as FA, slag and rice husk ash, as a supplement of ordinary portland cement (OPC). Test results of compressive strength and durability of concrete from those previous researches ensured the use of FA as a pozzolanic material for cement replacement in concrete. In this paper, a critical review on the strength development of concrete as influenced by the use of FA as a supplement of cement in concrete has been presented on the basis of available information in the published literatures of utilization of FA in blended cement and concrete. The compressive strength of mortar and concrete as varied by the percent replacement and fineness of FA is discussed here. Physical and chemical properties, pozzolanic activity, normal consistency and setting time, strength activity index, advantages and disadvantages of using FA in concrete are also pointed out. Proper consumption of FA as pozzolanic material in concrete would be a useful step for the production of cost effective and more durable concrete. Besides, utilization of FA in cement and concrete could reduce negative environmental effect, and also would be the appropriate solution for the disposal of this waste.

Original languageEnglish
Pages (from-to)4137-4153
Number of pages17
JournalInternational Journal of Physical Sciences
Volume6
Issue number17
Publication statusPublished - 2 Sep 2011

Fingerprint

Coal Ash
fly ash
Mortar
Fly ash
Ashes
Concretes
cements
Cements
ashes
Pozzolan
Timber
compressive strength
slags
supplements
rice
Slags
Compressive strength
Byproducts
Cementing (shafts)
Concrete industry

Keywords

  • Compressive strength
  • Concrete
  • Fly ash
  • Mortar

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Electronic, Optical and Magnetic Materials

Cite this

Strength development of mortar and concrete containing fly ash : A review. / Karim, M. R.; Mohd. Zain, Muhammad Fauzi; Jamil, Maslina; Lai, F. C.; Islam, M. N.

In: International Journal of Physical Sciences, Vol. 6, No. 17, 02.09.2011, p. 4137-4153.

Research output: Contribution to journalArticle

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