The disposal of concrete waste contributes to the generation of landfill waste and the depletion of natural sand and gravel resources. However, proper recycling and disposal of concrete waste can mitigate its environmental impact and provide many business benefits. Recycled concrete is a cheaper aggregate building material than new concrete.

NC State University requires a minimum of 75% of construction and demolition waste to be diverted from the landfill through reuse or recycling. Working with project managers and contractors, Waste Reduction and Recycling tracks the diversion rates from all construction projects and reports an overall diversion rate at the end of the year. Priority 1: Reuse …

 — In the current century, urbanization and the development of the construction industry have led to the generation of construction and demolition waste (CDW), imposing pressure on ecology and the environment. This has attracted the attention of industry personnel and researchers. This work discusses the current research on recycled …

 — With the development of the urbanization and demolition in recent years in China, the amount of construction and demolition waste has annually increased rapidly. In consideration of the successful application of construction and demolition waste, this study aims to enhance the content of recycled aggregate and evaluate the performances of …

 — CDW refers to the kinds of waste generated in the process of construction, maintenance, demolition and deconstruction of buildings and civil structures (Aslam et al., 2020; Chen and Lu, 2017; Mahpour and Mortaheb, 2018).According to the European Commission (2022), CDW includes s a wide variety of materials such as concrete, …

 — This paper presents the behavior of recycled aggregate concrete (RAC) made using field demolished concrete as aggregate. The experimental investigations were conducted on M25 grade concrete, 30 no. of cubes of size 150 mm × 150 mm × 150 mm and 15 no. of beam of size 700 mm × 150 mm × 150 mm from which 20 cubes and 10 …

 — For the past 20 years, recycled concrete aggregate from demolition and construction waste has been considered as an alternative to pure concrete in structural concrete to minimize the ...

 — The addition of clay in the waste aggregates caused a rise in optimum moisture content & swelling pressure [15]; thus, it will affect the mixture's durability due to the possibility of cracks due ...

 — The construction sector is responsible for approximately 6 billion tons of CO 2 emissions [1].Furthermore, the demand for raw material as aggregate for concrete is around 2.7 billion tons/year in EU countries altogether [2], 900 million tons/year in the USA [3], and 700 million tons/year in Brazil [4].Besides, at the end of the construction chain, the …

 — Considering the current scenario, along with Government regulations, alternate eco-friendly methods need to be figured out. One of the best management practices to discard the e-waste and an alternative to escalating cost of construction material is using e-waste as aggregate in concrete. E-waste

 — Three types of aggregates were used in this study which include natural sand as fine aggregate (NFA), coarse aggregates with grading of 4.75–20 mm were dolomite as natural (NCA) and the crushed concrete rubble as (RCA) which were collected from fifteen different sources of demolished buildings and landfill locations then crushed using a …

 — (1) Background: Globally, numerous development projects are being undertaken to expand and improve urban infrastructure facilities, which result in around 30% to 40% of construction and demolition (C&D) waste in the total waste generation. Due to its detrimental impacts on the environment and human health, several researchers …

 — The construction industry generates many environmental pollutants, such as noise, air pollution, solid and liquid waste, water pollution, harmful gases, and dust (Adnan et al. 2014).It is classified as the world's largest consumer of raw materials, the highest energy-consuming sector, reaching up to 36% of the total energy consumption, and one …

 — The cements used to prepare the concretes, depicted in Fig. 1, included: i) an unadditioned CEM I 42.5 R ordinary Portland cement supplied by a Lafarge Holcim cement plant (here denominated OPC); and ii) OPC-25CDW, a patented (No. ES2512065 [41]) recycled cement blending 25 wt% finely ground masonry waste (roof tiles, brick, …

 — Research findings indicate that construction solid waste holds significant potential for recycling in backfill mining. Notably, ceramic construction solid waste (CCSW, depicted in Fig. 2 and detailed in Table 1) exhibits outstanding characteristics, including high hardness, strength, wear resistance, and oxidation resistance. Consequently, it ...

 — A literature review comprising 163 publications published over a period of 26 years from 1992 to 2018 is presented in this paper. This review discusses the …

 — An estimated 2.24 billion tons of solid waste was generated worldwide in 2020 [1].Construction and demolition waste (CDW) represents at least 30% of this solid waste [2], and is expected to increase due to the urban sprawl [3, 4].The amount and composition of CDW are variable around the world.

 — Construction waste can be crushed after separation of waste materials such as plastics, metals, plaster and wood and used as aggregate in concrete [4], [5]. Due to the limited resources of non-renewable materials, the use of recycled materials is unacceptable; therefore, construction waste has the potential for recycling.

 — Coarse aggregate has notable influence on concrete properties. The sustainability in concrete is generally achieved through reduced mining of natural resources required for the manufacturing of its basic constituents, by recycling of suitable industrial by-products or post-consumer materials including construction and demolition waste (CDW).

 — In the current century, urbanization and the development of the construction industry have led to the generation of construction and demolition waste (CDW), …

 — Construction waste is generated in diverse onsite and offsite operations. Improper management of construction waste may create severe environmental issues. The existing methods dealing with construction waste management include waste quantification, framing and usage of strategies such as reduce, reuse, recycle, recovery along with …

Recycled aggregate. Recycled aggregates come from reprocessing inorganic or mineral material that have previously been used in construction. Examples of recycled aggregate include: construction demolition waste (CDW) reclaimed asphalt (otherwise known as RAP) crushed glass; spent railway ballast. What are recycled aggregates?

 — The demand for construction aggregates is increasing globally. Recent statistics indicate that the global demand for aggregates is expected to increase from 45 …

 — A huge problem with glass is the single-use purpose for applications such as beverage bottles, which is one of the main uses of glass. Waste glass is estimated to account for 5% of the global municipal solid waste generated in 2016 [1], with recycling rates varying globally and within regions.In 2017, Europe had a glass recycling rate of …

 — Removal rule of nitrogen and phosphorus in construction waste recycled aggregate constructed wetland. The water quality indexes along the length of the #2 and #3 constructed wetlands were sampled and analyzed. Positions 1, 2, 3, and 4 were the intake area, catchment pipe at 20 cm, catchment pipe at 40 cm, and outlet area, respectively. ...

 — The composition of CDW aggregate depends on the type of construction demolition waste used to prepare this type of aggregate. A typical CDW aggregate prepared from normal concrete block contains 65–70 % of coarse and fine sized normal aggregates and 30–35 % of cement paste (Poon et al. 2004a, b).The CDW aggregate prepared from …

stakeholder eorts regarding recycling of recycled aggregate from construction waste were reviewed. Data used in this paper were mostly collected from government reports, construction waste regulations, and research papers. The results show that construction waste management systems have been enacted and revised in line with social needs, …

These include Aggneo, a natural secondary aggregate with the same quality and performance as newly-quarried construction aggregate. We're constantly striving for innovation and greener solutions, and by …

 — Construction waste management is crucial to the sustainable development of the construction industry and environmental management, and China has the highest construction waste emission in the world, making it typical and representative globally. In this paper, we conducted an empirical study on the relationship between the change in …