Cement and Concrete Research
•Relationship between crack and corrosion of reinforcement was investigated.•Corrosion results of natural process and then corresponds to in-situ conditions.•Comparison with time predicting model is provided.•Prediction of load-bearing capacity from crack pattern was studied.
An analytical model to predict strand slips within both transmission and anchorage lengths in pretensioned prestressed concrete members is presented. This model has been derived from an experimental research work by analysing the bond behavior and determining the transmission and anchorage lengths of seven-wire prestressing steel strands in differe...
Journal of Zhejiang University SCIENCE A
The fracture processes of concrete were described by a cohesive crack model based on initial toughness criterion. The corresponding analytical method to predict the instability state was proposed. In this model, the initial toughness was adopted as the crack propagation criterion and the weight function method was used to calculate the stress inten...
Arabian Journal for Science and Engineering
A thermo-mechanical model is employed to analyze the thermo-mechanical behavior of a widely used Fiber reinforced polymer reinforced concrete subject to thermo-mechanical loading under service conditions. The governing equations including heat transfer, thermo-mechanical deformation and damage evolution are briefly described in the model. A numeric...
Journal of Nondestructive Evaluation
During field tests, there is almost no effective way to control thermal changes in concrete structures. It is obvious that temperature fluctuations influence nonlinear acoustic behavior of concrete, which may lead to incoherent results during field investigations. The research presented herein was conducted to assess the effects of temperature chan...
Science China Earth Sciences
A National Science Foundation of China (NSFC) major research project, Destruction of the North China Craton (NCC), has been carried out in the past few years by Chinese scientists through an in-depth and systematic observations, experiments and theoretical analyses, with an emphasis on the spatio-temporal distribution of the NCC destruction, the st...
La corrosion des aciers dans les ouvrages en béton armé due aux chlorures est l’une des principales causes de dégradation des constructions notamment en façade maritime. La prédiction de la durée de vie des constructions vis-à-vis de cette pathologie, nécessite la compréhension des principaux mécanismes liés au transfert de chlorures surtout dans l...
International Journal of Mineral Processing
•A microwave pretreatment was studied for producing high-quality aggregates.•Weakening of concrete samples was observed even at low energy microwave heating.•Decrease of the fracture energy and increase of the aggregate liberation.•Assessment of the robustness of the process for treating concrete waste.
This study presents an innovative method for concrete waste up-cycling based on concrete weakening through microwave heating before impact crushing. Two series of tests were conducted in order to assess the influence of the aggregate properties (size distribution, mineralogical nature) and the influence of the operating conditions of the microwave ...