Paper Title :Optimum Proportions of Mineral Admixtures for Workability and Strength of High Strength Concrete
Author :V. Anusha, T. Venkateswarlu, P. Kameswari
Article Citation :V. Anusha ,T. Venkateswarlu ,P. Kameswari ,
(2017 ) " Optimum Proportions of Mineral Admixtures for Workability and Strength of High Strength Concrete " ,
International Journal of Advances in Mechanical and Civil Engineering (IJAMCE) ,
pp. 55-57,
Volume-4,Issue-4
Abstract : Concrete, most widely used construction material is found to be largely dependent upon the behaviour of its
constituent phases such as aggregates, cement mortar and aggregate–paste interface. Moreover, a stronger and durable
concrete could be achieved by modifying the behavior of cement mortar. Therefore, several investigations have been carried
out to improve the behaviour of cement mortar and paste (A. M. Neville). Pozzolanic materials have been added in cement
paste and mortar to enhance its mechanical and durability characteristics along with densification of microstructure. Previous
investigations demonstrated that the incorporation of fly ash brought significant changes in the behaviour of cement paste
and mortar along with reduction of consumption of cement quantity. In addition to fly ash, silica fume was found to be quite
efficient in improving cement paste and mortar characteristics at early days owing to increased rate of cement hydration at
early hours. Currently, new materials of nano-scale size have been invented with highly improved characteristics owing to
the rapid progress in Nanotechnology. The nano-materials were found to be quite efficient in modification of the properties
of concrete in nano-metric scale. Several investigations have been carried out to study the influence of NS on the strength of
cement mortars. The outcomes of this study may indicate optimum Compressive Strength can be achieved when the factors
cement content, water to powder ratio, fly ash, silica fume and Nano-silica and the dosage of super plasticiser. In sustainable
development which is today’s coin word, it is required to save the natural resources for future generations. The aim of our
project is to study the improvement in the mechanical properties of high strength concrete mix M-60 grade, with a partial
replacement of cement with Nano Silica, silica fume and fly ash using Pozzolonic Reactivity Index to make concrete more
green.
Keywords - Fly ash, silica fume, Nano Silica, Compressive strength, Pozzolonic Reactivity Index.
Type : Research paper
Published : Volume-4,Issue-4
DOIONLINE NO - IJAMCE-IRAJ-DOIONLINE-8946
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Published on 2017-10-20 |
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