Effect of Water-cement Ratio on Corrosion of Reinforced Concrete
نویسنده
چکیده
Corrosion of reinforced concrete is one of the major problems in the construction industry causing premature deterioration of concrete structures well before their service life. This has placed incredible financial burden on many projects and also placed safety of users at risk. A research work was carried out to evaluate the effect of water cement ratio on corrosion of steel in reinforced concrete structures. Eighteen samples in three groups of six samples each with three different water cement ratios were prepared and tested. The size of each sample was kept as 40x40x160 mm and water cement ratios was 0.45, 0.60 and 0.75 for the three groups respectively. The test results indicated that by using an appropriate amount of mixing water, penetration of main corrosion causing agents like chloride ions and atmospheric carbon dioxide could be significantly reduced. It is also observed that a water-cement ratio of less than 0.6 shall give better corrosion resistance with increased compressive strength.
منابع مشابه
The Effect of Caspian Sea Water on Corrosion Resistance and Compressive Strength of Reinforced Concrete Containing Different SiO2 Pozzolan
Many parameters are influenced by the diffusion of chloride on concrete in marine environments and these can affect concrete quality. In this study, the effect of water to cement ratio of 0.35, 0.40 and 0.45 on corrosion resistance and compressive strength of reinforced concrete was evaluated. Moreover, different percentages of micro silica (SiO2) including 5, 7.5 and 10% were utilized, in orde...
متن کاملInfluence of cement content on concrete performance in corrosive environments (sea water)
In this study, the effect of cement content on concrete performance in corrosive environments is investigated on concrete mixtures having the same water/cement (w/c) ratio. Three w/c ratios (0.40, 0.45 and 0.50) were used and for each w/c ratio three mixtures were prepared with cement contents 350, 400 and 450 kg/m3. The compressive strength, electrical resistivity and chloride diffusivity of t...
متن کاملThe Synergy of Electrochemistry and Concrete Material Science in Evaluating Corrosion Resistance of Wastes-Containing Reinforced Cement-Based Systems
Next to water, concrete is the most used material on earth. Reinforced concrete has the potential to be durable and capable of withstanding a variety of adverse environmental conditions. One of the major difficulties in the engineering practice, however, is the multidimensional nature of reinforcement corrosion related issues. Nevertheless, materials and processes involved in the service life o...
متن کاملComparisons on Reinforcing Bar Corrosion Models of RC Structures in Marine Environment
In marine environment, the physical and mechanical performances of reinforced concrete members will vary distinctly with time, which reduces the safety of the structures. The main factors influencing the durability of reinforced concrete members include the deterioration of concrete, the reduction of reinforcing bar strength, the decrease of reinforcing bar area, the weakening of the bond stren...
متن کاملProbabilistic Modelling of Marine Bridge Deterioration
Chloride induced corrosion of steel reinforcement is the main cause of deterioration of reinforced concrete marine structures. This paper investigates the relative performance of alternative repair options with respect to the deterioration of reinforced concrete bridge elements in marine environments. Focus is placed on the initiation phase of reinforcement corrosion. A laboratory study is desc...
متن کامل