Term: Waste light concrete

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**History and Technology of Waste Light Concrete:**
– Concrete products traditionally consist of cement, water, and aggregates.
– Polystyrene-based light concrete was developed in the 1960s, with a stable version by 1990.
– A health-neutral polymer additive was introduced in 2001 to enhance the concrete.
– The patent for using mixed shredded solid waste granules as aggregates was awarded in 2017/2018.
– Special additives are mixed with cement, waste materials, and water, using traditional concrete tools.
– Various waste materials like plastics, glass, and rubber can be incorporated.
– Desert sand or low-quality aggregates can be used, and the technology replacement cost is minimal.

**Circular Economy Benefits of Waste Light Concrete:**
– Waste light concrete is 100% recyclable through on-site shredding and remixing.
– Laboratory results indicate no environmental polluting effects.
– It offers the potential for an indefinite number of recycling cycles.
– No leeching effects have been observed in laboratory tests.

**General Usage and Applications of Waste Light Concrete:**
– Not suitable for weight-bearing structural concrete or high-friction surfaces.
– Applications include waste plastic road bases, house bases, insulating walls, bricks, and pre-cast walls.

**Comparison with Comparable Waste Processing Technologies:**
– Plastic road technology involves soft plastic in asphalt mix, with high initial investment and low expandability.
– Waste light concrete can dispose of more waste with low energy consumption compared to plastic road technology.
– Plastic blocks can be used as road building units, and both technologies can be combined in the same road stretch.
– Other technologies like plastic bricks and rubber road bases are also used for waste processing.

**Current Research and Development in Lightweight Concrete:**
– Ongoing research focuses on using waste materials in lightweight concrete.
– Plastic aggregates may decrease compressive strength but reduce heat conduction.
– Treatments like gamma radiation and microwave radiation are being explored to enhance properties.
– Air reducing agents are being assessed for increased adhesion in lightweight concrete production.

Waste light concrete (WLC) is a type of light weight concrete where the traditional construction aggregates are replaced by a mix of shredded waste materials (thermoplastics, thermosetting plastics, glass, tires, incinerator bottom ash, solid agricultural waste etc.) and a special group of additives. Used in infrastructure and building construction.

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