Effect of Aggregate Type on Mechanical Behavior of Dam Concrete

摘要: Due to the practical difficulties in performing a full size specimen test, dam concrete is usually sieved remove aggregate larger than 40 mm (1.6 in) when tested, which called concrete. This paper reports on study that examined influence of surface roughness via two types aggregates mechanical and fracture properties for concretes. The authors used by specimens 450 x 900 (18 18 35 in.) tension compression standard 150 550 (6 6 22 compression, respectively. complete stress-strain responses both were acquired through systematic experimental program. propose models estimate basic parameters concretes with ages; they theoretical normalized axial curve stress versus maximum crack width uniaxial tension. Results include: strengths, modulus elasticity, energy increase age; diameter significantly affect energy, peak strain, tension; performance crushed coarse higher natural aggregate.