Elastic Waves on Large Concrete Surfaces for Assessment of Deterioration and Repair Efficiency
نویسندگان
چکیده
منابع مشابه
Time-Dependent Structural Behavior of Repaired Corroded RC Columns Located in a Marine Site
The chloride corrosion of reinforcing steel in reinforced concrete (RC) structures is a significant reason for premature deterioration and failure of RC structures in aggressive environments such as Persian Gulf region. This is one of the most important sources of engineering and economic problems in developed countries. So, the repair and maintenance of RC structures exposed to corrosive envir...
متن کاملEvaluation of Depth of Deterioration of Concrete Structure after Fire Using Stress Wave Method
The aim of the present research is to evaluate the degree of deterioration by means of stress waves. In this study, the stress waves generated by the impact of a steel ball on concrete surface are recorded by a displacement receiver 200 mm away. The received signal is analyzed in the frequency domain. The frequencies of the dominant response in the spectrum are used to evaluate the depth of det...
متن کاملThe Elastic Modulus of Steel Fiber Reinforced Concrete (SFRC) with Random Distribution of Aggregate and Fiber
The present paper offers a meso-scale numerical model to investigate the effects of random distribution of aggregate particles and steel fibers on the elastic modulus of Steel Fiber Reinforced Concrete (SFRC). Meso-scale model distinctively models coarse aggregate, cementitious mortar, and Interfacial Transition Zone (ITZ) between aggregate, mortar, and steel fibers with their respective materi...
متن کاملPolymer Impregnation of Concrete by Methyl Methacrylate and its Effects on Mechanical Properties and Corrosion of Steel in Concrete
Freezing and thawing resulting from the ingression of water into concrete causes cracking or spalling. Corrosive ions such as chloride or sulfate penetrate the concrete surface and eventually reach the reinforcing steel. This causes the steel to corrode. Because of the high maintenance and replacement costs, responsible officials should be increasingly concerned about the growing number...
متن کاملOptimization of Electromagnetic Acoustic Transducers (EMATs) for Condition Assessment of Civil Infrastructure
There are more than 130,000 prestressed concrete bridges in the United States with about 37,000 bridges being more than 30 years old. Prestressing steel strands are an important construction element used in these bridges and are critical to their performance. Presently there is no effective Nondestructive Evaluation (NDE) technology for condition assessment of these prestressing strands once th...
متن کامل