Kierrätyshiekka

Kierrätyshiekka, which translates to recycled sand in English, is a material derived from processed construction and demolition waste. This waste is typically crushed and screened to produce aggregates that can replace virgin sand in various applications. The primary source materials for kierrätyshiekka include concrete, brick, asphalt, and ceramics.

The recycling process involves several stages. First, demolition waste is collected and transported to a recycling facility. There, it undergoes separation to remove contaminants such as wood, plastic, and metal. The remaining materials are then crushed using specialized machinery into smaller particles. Finally, the crushed material is screened to achieve the desired particle size distribution, creating a product suitable for use as recycled sand.

Kierrätyshiekka offers several environmental and economic benefits. By utilizing waste materials, it reduces the demand for virgin sand extraction, which can help conserve natural resources and minimize the environmental impact associated with quarrying. Furthermore, it diverts significant amounts of waste from landfills, contributing to waste reduction efforts. Economically, using recycled aggregates can be more cost-effective than purchasing new sand, especially in areas where virgin sand is scarce or expensive.

The applications of kierrätyshiekka are diverse. It is commonly used as aggregate in concrete production, as fill material in civil engineering projects, for landscaping purposes, and in road construction. The quality and properties of kierrätyshiekka can vary depending on the source materials and the recycling process, making it suitable for a range of technical specifications.