Abstract
World wide natural resources reduced day by day. The natural resource reduction cause change occurs in the environment, affect animals, birds and human being. The cement industry produces cement product but every one ton of cement product made by using 1.1 ton of natural resource and also 1 ton of carbon di-oxide released to the environment. The global warming main cause CO2. So, in this research decided coir husk ash replace by cement constantly 15%. So, the use of cement in concrete 15 percentage reduced. The concrete road made by high dense concrete cause the rain water cannot allow to the soil surface. So, the rain water run off on the concrete surface mixed some pollutant and rain water pollution is occurred. In this research create rain water permeable concrete or low fine concrete. In this concrete density lower compare to the normal concrete. This type of concrete rain water allow to percolate concrete and concrete to the soil and rain water run off reduced. The rain water pollution also reduced. In this research fine aggregate percentage reduced each mix similarly increase porosity and permeability. 20%, 40%, 60%, 80% and 100% reduced fine aggregate step by step in concrete. Fine aggregate 100% reduced specimen achieve high porosity and permeability value and poor mechanical values