This book presents selected papers from the Global Conference on Green Construction Materials and Practices 2025 (GCGC 2025) during February 5?6 in Karachi, Pakistan. The conference contributions include academics and industry practitioners from the cement and concrete sectors, discussing the sustainability of the construction sector by fostering collaborative scientific discussions and promoting eco-friendly materials in alignment with practices of green construction. The topics discussed are mainly divided into 3 main thematic topics (1) Green Construction Materials?Innovative/Sustainable Construction Materials, Properties of Low-Carbon Cement, Composites and Concrete, Chemical Additives for Low-Carbon Cement and Concrete; (2) Sustainable Construction?Low-Carbon and Sustainable Construction Practices, Circular Economy in Construction, Life-Cycle Assessment and Environmental Impact; (3) Case Studies and Best Practices?Policies and Regulations, Advanced Modeling and Simulation Techniques, Renewable Energy Integration, Energy Efficiency. This book offers a timely reference for both academics and professionals in the broad field of green construction.