Background: Polymer composites when reinforced with heavy metals in the form of micro/nano particles are efficient gamma- and X-ray shielding materials providing such advantageous features as cost-effectiveness, light-weight factor, flexibility, non-toxicity, conformability over conventional shields. Materials and Methods: In this paper the influence of weight percentages and particle sizes of ...

Rapid development of the automobile industry has brought disposal problem waste rubber tires. Mixing tires into concrete can not only solve environmental problems but also improve mechanical properties concrete. Rubber aging is one main factors to affect rubberized Therefore, an FEM model in mesoscale established this paper. The influence on uniaxial compression damage u;studied. results show t...

Abstract The environmental impact of rubber waste can be reduced by extending the lifetime products. It achieved developing graphene/rubber nanocomposites with good abrasion resistance. In this paper, we investigated how mixing technologies influence mechanical properties rubber. We added various amounts (0, 1, 5 and 10 phr) graphite graphene to mixtures using a two-roll mill, an internal mixer...

We conducted GDS dynamic triaxial tests to study the change rules of hysteresis curve morphology, axial strain, elastic modulus, and damping ratio waste tire rubber-mixed sand-based subgrade model samples with different rubber particle sizes, mixing amounts, loading times. The research revealed developmental rule curves rubber-mixed-sand under cyclic loading. From analyses comparison stress–str...

OBJECTIVES To determine occupational risk factors for stomach and lung cancer among workers in the German rubber industry. METHODS A cohort of all male German rubber workers (n = 11,633) who had been employed for at least one year in one of five study plants and who were alive and actively employed or retired on 1 January 1981 was followed for mortality from 1 January 1981 through December 19...

Rubber Asphalt is the asphalt with rubber addition. The addition of to was expected have higher stiffness and longer durability that can be identified by its properties, are softening point, penetration ductility. 60/70 has been mixed 7% rubber. Mixing quite a challenge. liquid or solid should processed through prevulcanization in plant. properties investigated laboratory BPJN West Sumatera. He...