International Journal of Advanced Science and Technology Vol.63, (2014), pp.73-82 http://dx.doi.org/10.14257/ijast.2014.63.07 ISSN: 2005-4238 IJAST Copyright ⓒ 2014 SERSC Effect of Sawdust as Fine Aggregate in Concrete Mixture for Building Construction Tomas U. Ganiron Jr Civil Engineering Department, University of the East, Caloocan City College of Architecture, Qassim University, Buraidah City tomasuganironjr@gmail.com Abstract This experimental study aimed to develop an acceptable concrete mixture with sawdust particles as substitute to fine aggregate that can be used for building construction particularly in residential class concrete slab and analyze the effect of sawdust concrete mixture in terms of adhesion of aggregates, thermal insulation, workability and surface quality. This also aims to determine the factors affecting the performance of sawdust concrete mixture in terms of humidity and temperature and design a sawdust concrete mixture as an alternative fine aggregates for residential class concrete slab that will meet the (American Society for Testing and Materials (ASTM) requirements in order to help contribute to the industry in saving the environment, to provide new knowledge to the contractors and developers on how to improve the construction industry methods and services by using sawdust concrete mixture, and sustain good product performance. A conventional concrete product was compared to sawdust concrete mixture with recycled bottles of the same proportion in terms of economic performance. Observations from the tests performed were conducted in the laboratory where precise data were gathered and completely attained. Keywords: Building construction, fine aggregate, sand, sawdust concrete mixture 1. Introduction The development in the construction industry all over the world is progressing [1]. Many structures are being built, both residential and non-residential. Just like many countries, the demand for new structures in the Philippines is highly increasing [2]. Attempts have also been made by various researchers to reduce the cost of its constituent and hence total construction cost by investigating and ascertaining the usefulness of material which could be classified as local materials. Some of these local materials are agricultural or industrial waste which includes sawdust, concrete debris, fly ash, coconut shells among others which are produced from milling stations, thermal power station, waste treatment plant and so on As a result of the increase in the cost of construction materials, especially cement, crushed stone (coarse aggregate), fine sand (fine aggregate); there is the need to investigate the use of alternate building materials which are locally available [3]. Since most building construction works consist of concrete work; therefore, reduction in cost of concrete production will reduce the cost of building construction. Globally, there is a resurgence of interest in this era of information revolution and environmental awareness. However, modern applications are being discovered and several are based on wood’s unique physical and mechanical properties like strength