doi:10.3850/978-981-08-7920-4_S3-M042-cd
Effect of Silica Fume on Engineering Properties of Fiber Reinforced Concrete
Ashish Kumar Dash, Mahabir Panda and Kishore Chandra Biswal
Department of Civil Engineering, National Institute of Technology, Rourkela, Orissa, India.
ABSTRACT
Concrete is a most widely used man-made construction material in the world. It is obtained
by mixing cementitious materials, water, aggregate and sometimes admixtures in required
proportions. The concrete widely used in large-scale construction demands high strength, high
flowability, and high durability. This paper is an attempt to study the various engineering
properties of a concrete made with additives such as silica fume, a synthetic fiber and a super
plasticizer in differentmaterial proportions. Recron 3s fibers manufactured by Reliance Industry
Limited, India (RIL) and commonly available in the local retail market of India have been used.
The experimental investigations include the X-ray diffraction test, the basic tests for cement,
and conventional tests for concrete such as compressive strength, flexural strength and split
tensile strength. The capillary and porosity tests have been also conducted to study the effects of
concrete in respect of resistance to seeping or dampening. It has been observed that silica fumes
and Recron fibers enhance the resistance to capillary and porosity problems in concrete, besides
enhancing the compressive strength, flexural strength and split tensile strength. Generally it is
seen from this investigation that the optimum properties of concrete have been obtained with
20% silica fume replacement and 0.2% fiber content.
Keywords: Synthetic fiber, Silica fume, Superplasticizer, Conventional tests for concrete, Capillary test and porosity test.
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