Plastic Deformation and Creep of Polymer Concrete with Polybutadiene Matrix

摘要

Composite material based on polymer binder and mineral fillers are widely used as structural chemically resistant, vibration and impact proof materials for industrial construction and chemical machinery. Up to the present hetero-chain polymers: unsaturated polyesters, polyepoxy and polyurethane are applied as a binder of such concrete-polymer composites. A new type of conglomerate composites - polymer concrete based on polybutadiene belonging among the liquid rubbers (RubCon) has been enveloped and investigated. Such a rubber is used as a binder hardened by sulfur in the presence of special admixtures. Quartz sand and fly ash may be used as fillers and fine-grained granites and basalt chipping as coarse aggregate. The resulting material has very acid and alkali resistance, toughness and adhesion to metal reinforcements, low water absorption and remarkable compression strength (80-90 MPa). Plastic deformation and creep of RubCon samples were investigated under compressive load applied for 180 days at standard conditions and in aggressive media. Based on experimental results rheological characteristics and creep curves were obtained. Formula, which enables to determinate of material deformations in any time of material work under load, was derived as well.