Use of Hydraulic Cement (GU Cement) in the Luang Prabang Hydropower Project

The Luang Prabang Hydropower Project has transitioned to using hydraulic cement (GU Cement), a move that reduces carbon emissions by lowering the amount of clinker used, which is the primary component of cement. Additionally, the project has updated its cement quality control standards, shifting from the previous ASTM C150 standard for Portland cement to the ASTM C1175 standard for hydraulic cement. This change helps reduce coal consumption in the cement production process. In 2024, the project used 58,140 tons of hydraulic cement, leading to a reduction of 3,023 tons of CO₂ emissions—equivalent to planting approximately 318,239 trees.