Compressive Resistance of Environmental Concrete Using Fly Ash and Fine Aggregate for Replacing Traditional Sand

摘要

This paper presents the production of enviromental concrete using fine aggregate and fly ash to reduce bad influences on environment. The excessive exploition of traditional sand in Mekong Delta rivers has recently caused serious landslides sweeping away a large area and making. Therefore, using alternative materials - fine aggregate to replace river sand - is very important and urgent. In addition, fly ash is one of waste products in coal-fired power plants, and, the consumption of fly ash helps decreasing landfill costs and increasing sustainable development. The compression strength of environmental concrete is obtained from 20-40 MPa using cube-shaped specimens with various compositions. The productive prices between environmental and traditional concrete are comparatively discussed.