title: Concrete with carpet recyclates: suitability assessment by surface energy evaluation.
abstract: Worn out textile floor coverings are burdensome wastes that are degraded in landfill sites after a very long period of time. One of the ways to manage this kind of waste may be the use of carpet recyclate (CR) as an additive for concrete reinforcement. Therefore, an attempt was made to predict the effects of recyclate additives on the durability a concrete-carpet mixture by employing the method of assessing surface properties of components in the concrete-carpet recyclates composite. Testing was performed on carpet wastes, containing polyamide (PA) and polypropylene (PP) piles and butadiene-styrene resin with chalk filler (BSC) as back coating, to assess the suitability of CR additive for concrete reinforcement by surface energy evaluation. Based on the measurements of contact angles, the free surface energy of recyclate components was determined. The reversible work of adhesion at the interface between these components in dry and wet states was also calculated. The results show that CR with both PA and PP fibers form a strong and water-resistant bond with concrete.
authors.affiliation: The Institute of Textile Materials Engineering, Gdanska Str. 118, 90-520 Lodz, Poland.
authors.forename: H
authors.initials: H
authors.lastname: Schmidt
authors.forename: M
authors.initials: M
authors.lastname: Cieślak
mesh_terms: D003247:Conservation of Natural Resources; D003252:Construction Materials / Q000032:analysis*; D005430:Floors and Floorcoverings; D006801:Humans; D008422:Materials Testing; D012037:Refuse Disposal / Q000379:methods*; D013499:Surface Properties; D018505:Waste Management / Q000379:methods*