钛石膏“上路”，齐临高速变废为宝筑新途

Core Viewpoint - The construction of the Qilin Expressway demonstrates a commitment to the national "dual carbon" strategy and the concept of "green mountains and clear waters are as valuable as mountains of gold and silver" by utilizing modified titanium gypsum waste as a roadbed material, thus promoting sustainable development and resource recycling [1][2]. Group 1: Project Overview - The Qilin Expressway, approximately 57.1 kilometers long, connects key towns in western Shandong and serves as an important transportation link between the western Shandong region and the provincial capital economic circle [1]. - The project addresses the challenges of material shortages for roadbed filling and the disposal of industrial solid waste by converting accumulated titanium gypsum waste from local titanium dioxide production into qualified roadbed filling material [1][2]. Group 2: Environmental Impact - Traditional roadbed construction methods require extensive extraction of natural soil and stone materials, which can lead to ecological damage and increased carbon emissions due to long-distance transportation [2]. - The project utilizes a mature and reliable technology for using titanium gypsum waste, which has been validated in multiple scenarios within the province, offering a cost-effective alternative to traditional filling materials [2]. Group 3: Technical Innovations - To ensure the safety and stability of the roadbed using industrial waste, a dedicated team developed a specialized curing agent and established standardized mixing processes, overcoming previous limitations of titanium gypsum [5]. - The modified titanium gypsum mixture exhibits superior performance in load-bearing capacity, water stability, and resistance to shrinkage and cracking compared to traditional materials, fully complying with high-grade highway design standards [5]. Group 4: Replicable Solutions - The Qilin Expressway project exemplifies a shift from traditional resource extraction to waste recycling, promoting a green ecological concept in highway construction [6]. - Each kilometer of the titanium gypsum roadbed reflects the spirit of "resource recycling," providing a replicable and scalable technical model for similar projects across the country [6][8].