Construction activities usually consumes a large amount of material and energy, and generates lots of heat, pollution and waste. Sustainable initiatives in construction may include reducing energy use and carbon emissions, optimized use of high carbon materials, and recycling of natural resources. Most of the materials used in construction are either steel or concrete. A vital constituent of concrete is Ordinary Portland Cement (OPC), which is a serious atmospheric pollutant due to emission of 5-7% of global CO2 emission. Geopolymer concrete is an alternative solution to mitigate up to 90% reduction of CO2 emission during cement production.
The present invention provides a method for developing a non-structural, light weight geopolymer concrete from agro-industrial wastes, which reduces CO2 emission during production of the cement and the disposal of these otherwise unused waste materials. Using these materials also reduces their disposal into landfills and the resultant pollution.
The geopolymer technology utilises materials found in agricultural and industrial wastes and consists of the following features:
The developed geopolymer technology can be used as a replacement of conventional light weight concrete and its associated applications.
Malaysia is one of the largest palm oil generated country and produces about 1,516,000 ton/ year wastes from palm oil industry.