Deterioration of Concrete in Aggressive Environment
P S R CH Ravi Varma1, Dumpa Venkateswarlu2, Alamanda Sai Kumar3
1P S R CH Ravi Varma, Department of Civil Engineering, Godavari Institute of Engineering and Technology, Rajahmundry (A.P), India.
2Dumpa Venkateswarlu, Department of Civil Engineering, Godavari Institute of Engineering and Technology, Rajahmundry (A.P), India.
3Alamanda Sai Kumar, Department of Civil Engineering, Godavari Institute of Engineering and Technology, Rajahmundry (A.P), India.
Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 2344-2348
| Volume-8 Issue-7, May 2019 | Retrieval Number: G6385058719/19©BEIESP
Open Access | Ethics and Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper mainly investigates about the effect of acidic curing environment on the strength and durability of concrete which is cured in water containing different percentages of nitric acid and hydro chloric acid. For this experimental procedures M40 concrete cubes of sizes 150mmx150mmx150mm, 150mmx150mmx300mm size concrete beams and 150mmx300mm concrete cylinders are adopted to find out the compressive, flexural and tensile strength respectively. The samples are made by using mix design concrete and those samples are cured in water having the chemical concentration water having the concentration respectively of 0,2,5,8 for both Nitric acid and Hydro chloric acid by volume of water for a curing period of 7,28 and 60days.The compressive strength of the cubes which are cured in the above mentioned percentage concentration of the acid is observed as decrease with increase in the age of curing. The percentage decrease in strength increases with both percentage of acid and curing age. Thus the rate of deterioration at 60 days curing will compare with 7, 28 days. From the past research works it is clear that thetensile and flexural strength tests at 28 days curing revealed that the strength decreased with increase in percentage concentration of acid. “For a unique curing age, both the power and mass of concrete decreases with an extend in the concentration of acid, also for a precise awareness of acid, the strength and weight of concrete decreases with curing age. A close to linear relationship exists between weight loss and loss in compressive strength.it can therefore be concluded that deterioration of concrete cured in acidic medium will increase with attention of acid and curing age. The durability decreases faster as the concrete ages. Thus, concrete structures can’t stand the check of time in acidic environment except extraordinary cements are used.
Keyword: Hydrochloric Acid, Nitric acid, Compressive Strength, Split Tensile Strength, Flexural Strength, Durability and Weight Loss.
Scope of the Article: Concrete Engineering