Jun Lu

TL;DR: In this paper, the effect of loading frequency on the low cycle fatigue behavior of plain concrete in direct tension was investigated, and a new damage model was proposed based on the stiffness degradation and the secondary strain rate during low-cycle fatigue tests.

TL;DR: In this paper, the authors investigated the hysteresis phenomenon of concrete stress-strain curve, the axial energy consumption per unit volume, dynamic elastic modulus, damping ratio, and the effect of the cyclic number and loading frequency on these mechanical characteristics.

TL;DR: In this paper, the effects of water pressure in the crack on the fracture parameters of a concrete beam under three-point bending were discussed, and a novel sealing device for hydraulic loading was proposed to simulate the hydraulic load in a test beam.

TL;DR: In this paper, the influence of different recycled aggregate contents on the mechanical properties of pervious concrete was investigated and numerical simulation analysis was carried out in order to determine the influence on the compressive strength and splitting tensile strength, direct tension strength and bending strength.

TL;DR: In this article, the effect of rubber content on the softening behavior of concrete after fracture was investigated, and it was found that the mixing of rubber extended the crack extension process and increased the deformation capacity of the concrete.