International Journal of Emerging Engineering Research and Technology Volume 3, Issue 6, June 2015, PP 114-121 ISSN 2349-4395 (Print) & ISSN 2349-4409 (Online) *Address for correspondence: sanjugou@gmail.com International Journal of Emerging Engineering Research and Technology V3 ● I6 ● June 2015 114 A Study on Mechanical Properties of Latex Modified High Strength Concrete Using Bottom Ash as a Replacement for Fine Aggregate Sanjith J 1 , Kiran B M 2 , Chethan G 3 , Mohan Kumar K N 4 1,2,3,4 Department of Civil Engineering, Adichunchanagiri Institute of Technology, Chikkamagaluru, India ABSTRACT Concrete is the most important engineering material. It is a mixture of cement, fine aggregate and coarse aggregate. River sand is the main raw material used as fine aggregate in the production of concrete. The natural sources of river sand are getting depleted gradually, therefore, in the present circumstances of scant sources of river sand; it becomes essential and more significant to find out its substitute material in concrete. In this research paper an attempt has been carried out to investigate the possibility of utilizing bottom ash as a replacement material for fine aggregate in the production of high strength concrete with latex as an additive and various strength properties were tested. The strength development for varies percentages (0-50%) replacement of fine aggregate with 10% of bottom ash can easily be equated to the strength development of latex modified high strength concrete at varies ages. The compressive strength of bottom ash concrete at the curing age of 28 days was increased compared to control concrete. Splitting tensile strength of concrete improved at percentages of replacement of bottom ash. Keywords: Bottom Ash, Metkaolin, Natural Rubber latex and High strength concrete. INTRODUCTION Concrete Concrete is one of the most widely used materials throughout the world in the various fields. Cement, sand, crushed quarry stones and water are generally used as ingredients of concrete. Sand and crushed quarry stones are available naturally and locally. River sand is the main raw material used as fine aggregate in the production of concrete. As the natural sources of river sand are getting depleted gradually, it becomes essential and more significant to find out substitute material in concrete. At the same time the challenge for the civil engineers in the future is to understand the project with the concept of sustainable development and this involves the use of high performance materials and products should be manufactured at reasonable cost with least impact on the environment. In India, nearly 70% of electricity generated is by combustion of fossil fuels, out of which nearly 61% is produced by coal-fired plants. This results in the huge production of ash. This ash is disposed either in dry or wet open area available near the plant or by grounding both bottom ash and fly ash or mixing it with water and pumping into artificial lagoon or dumping yards. Due to huge disposal of fly ash and bottom ash, it is adversely polluting water bodies and productive land. The use of coal ash in high strength concrete is a new dimension in concrete mix design. Due to replacement of bottom ash with fine aggregate economizes the construction cost and decreases the ash content. Bottom ash is a by- product which is obtained by burning coal at thermal power plants.