1. To evaluate the mechanical and environmental properties of various recycled waste materials abundant in Thailand and to develop a guideline for recycled waste materials as base/subbase pavement materials
2. To evaluate the mechanical, environmental and microstructural properties of industrial by-products based geopolymers stabilized base/subbase materials and to develop a guideline for the geopolymers stabilized recycled C&D materials as stabilized/bound subbase and base pavement materials
3. To employ genetic algorithm for cost optimization analysis of mix design for geopolymers stabilized base/subbase materials
