Core Viewpoint - The event showcased a new technology for on-site transformation of construction waste, emphasizing the importance of reducing building waste and enhancing resource utilization in urbanization efforts in China [3][4]. Group 1: Technology and Innovation - The project utilizes a "modified solidification" technology that transforms discarded soil and sludge into usable materials through a proprietary "modified adhesive material" [3]. - The modified solidified soil exhibits superior properties such as self-leveling and self-compaction, effectively filling irregular gaps and eliminating ground settlement risks [3]. Group 2: Environmental and Economic Benefits - The project achieved the on-site resource utilization of 12,000 cubic meters of waste soil, resulting in an 80% reduction in carbon emissions compared to traditional cement backfilling methods [4]. - Economically, the first phase of the project saved approximately 3.6 million yuan, with overall costs reduced by 20%-30% [4]. - The mechanized pumping method replaced manual and mechanical compaction, shortening the backfilling period by about 50%, thus allowing more time for subsequent processes [4]. Group 3: Future Applications - This low-carbon, economical, and efficient construction model is expected to be promoted in more municipal public works and underground space developments in Guangzhou, contributing to urban renewal with a focus on waste reduction and resource utilization [4].

Core Viewpoint - The event showcased the successful application of on-site resource utilization of construction waste in the Pearl River Village project, emphasizing the importance of innovative technologies in urban construction waste management [1][2]. Group 1: Technology and Innovation - The core of the technology presented is the self-developed "modified adhesive material," which is created from various natural and artificial inorganic mineral raw materials, enhancing the reactivity between soil particles [1]. - The modified solidified soil can be pumped and directly poured into the filling trench, allowing for seamless integration and eliminating the risk of ground subsidence associated with traditional backfilling methods [1][2]. Group 2: Environmental Impact - The new process achieves up to 80% carbon reduction compared to traditional cement backfilling, significantly decreasing traffic congestion and dust pollution caused by the transportation of construction waste [2]. - The project successfully utilized 12,000 cubic meters of waste soil on-site, achieving a balance between excavation and filling [2]. Group 3: Cost and Efficiency - The new method reduced overall costs by 20%-30% by saving on soil transportation and purchasing, as well as labor and machinery costs [2]. - The use of mechanized pumping instead of manual and mechanical layer compaction shortened the backfilling period by approximately 50%, optimizing the construction site for subsequent processes [2]. Group 4: Policy and Future Development - The Guangzhou Municipal Bureau of Urban Management and Comprehensive Law Enforcement plans to strengthen collaboration among departments to promote the resource utilization of construction waste, aiming for high-quality development in this sector [3]. - The event was organized by multiple associations and companies, indicating a collaborative effort to advance the technology and practices in construction waste management [3].