Recycled building materials

thumb|A slab of pykrete thumb|Pykrete is made of 14% sawdust and 86% water by mass.

composite materials made of wood fiber and thermoplastics

color

thumb|An Ionic order|Ionic capital embedded in the south wall of the Church of St. Peter at Ennea Pyrgoi, [[Kalyvia Thorikou, Greece]] Spolia (Latin for 'spoils'; : spolium) are stones taken from an old structure and repurposed for new construction or decorative purposes. It is the result of an ancient and widespread practice (spoliation) whereby stone that has been quarried, cut and used in a built structure is carried away to be used elsewhere. The practice is of particular interest to historians, archaeologists and architectural historians since the gravestones, monuments and architectural

building method that uses bales of straw (commonly wheat, rice, rye and oats straw) as structural elements, building insulation, or both

natural stone that has been finished to specific sizes and shapes

thumb|350px|Testing the thermal conductivity of a papercrete panel Papercrete is a building material that consists of re-pulped paper fiber combined with Portland cement or clay, as well as other soils. First patented in 1928 by Eric Patterson and Mike McCain (who originally named it "padobe" and "fibrous cement"), it was revived during the 1980s. It is generally perceived as an environmentally friendly material due to the significant recycled content, although this is offset by the presence of cement, which emits CO2 during manufacture. The material also lacks standardisation, and proper use

selective dismantlement of building components

sustainable construction practice

Bioasphalt is an asphalt alternative made from non-petroleum based renewable resources.

pavement material

granular rubber material from grinding scrap vehicle tires

mulch made of rubber