Experimental Investigation Of Partial Replacement Of Sand With Glass Fibre

ABSTRACT Concrete has been used in various structures all over the world since last two decades. Recently a few infrastructure projects have also seen specific application of concrete. The development of concrete has brought about the essential need for additives both chemical and mineral to improve the performance of concrete. Most of the developments across the work have been supported by continuous improvement of these admixtures. Hence variety of admixtures such as fly ash, rice husk ash, stone dust have been used so for. Also different varieties of fibres have below tried as additions. Hence, an attempt has been made in the present investigation to study the behavior of Glass fibres in Concrete. To attain the setout objectives of the present investigation, sand has been replaced with Glass fibres by 5, 10, and 15 % to produce Concrete. Glass fibre Reinforced Concrete (GFRC) is tested for Compression, split tension and flexural strengths. The results are quite encouraging for use of Glass fibres in producing Concrete. From the results of the research carried out in the last years on fibre reinforced cement based materials, it can be pointed out that, for the fibre contents usually employed in practice, the post-peak tensile behaviour is the most improved material characteristic. However, difficulties in carrying out valid direct tensile tests have limited the research in this field. The scarcity of investigation on the tensile behaviour of glass fibre reinforced concrete (GFRC) is also probably due to the ageing problems of GFRC systems. In order to contribute to a better knowledge of the uniaxial tensile behaviour of GFRC, deformation-controlled uniaxial tensile tests were carried out at Stevin Laboratory (NL). Polymer-modified glass fibre reinforced cement (PGFRC) specimens manufactured by spray up and premix techniques, and GFRC specimens are tested at the age of 28 days. The experimental response of the tested specimens is illustrated and the result.