City of Saskatoon's Green Streets Program—A Case Study for the Implementation of Sustainable Roadway Rehabilitation with the Reuse of Concrete and Asphalt Rubble Materials

Barriers and Enablers for Green Concrete Adoption: A Scientometric Aided Literature Review Approach

“…Road agencies, contractors, sub-contractor, and the public may not be aware of the benefits and potential of recycled materials or may have misconceptions or negative perceptions about their quality and performance. [32,33] Lack of awareness, knowledge and benefits…”

“…There may not be clear and consistent guidelines for the production, testing, and quality control of recycled materials, or for the design and construction of road structures using recycled materials. [32,33] There is no universally accepted framework or methodology for monitoring the performance and impact of nature-based solutions across different scales, hazards, and contexts. Different indicators may have different definitions, units, and data sources, making it difficult to compare and aggregate results.…”

“…The awareness category refers to the lack of knowledge, education, awareness, or benefits of various green solutions among different stakeholders and decision-makers. One of the barriers in this category is the lack of knowledge and education about the benefits and potential of recycled materials for building construction which may lead to misconceptions or negative perceptions by various stakeholders such as road agencies, contractors, subcontractors, and the public [32,33]. Another barrier is the lack of awareness, knowledge, and benefits of nature-based solutions, which are often overlooked or underestimated compared to grey solutions by stakeholders and decision-makers.…”

“…For example, the cement industry faces challenges in finding and using alternative energy sources and improving fuel efficiency in the existing plants [54][55][56][57]. The use of recycled materials in building construction and the monitoring of nature-based solutions lack specifications and standards which can help in promoting best practices [32,33]. The precast concrete industry suffers from physical damage and waste due to inappropriate battens, unclear identification marks, large inventory, and lack of sufficient care [2,[59][60][61][62][63].…”

“…The use of advanced mechanistic laboratory tests and structural asset management techniques to quantify the benefits of recycled material systems and validate their end-product performance. [32,33] Environmental awareness The awareness of environmental issues and benefits of GSCM among precasters and their stakeholders. [59,61] Circular economy A concept that aims to reduce the environmental impact of production and consumption by minimizing resource extraction, waste generation and emissions, and maximizing the value retention of products and materials through reuse, recycling, and recovery.…”