Experimental study on the neutralization of fly ash concrete attacked by acid rain

Author(s):  
Jiangang Niu ◽  
Ditao Niu
2011 ◽  
Vol 243-249 ◽  
pp. 5768-5771
Author(s):  
Jian Gang Niu ◽  
Hai Tao Zhai ◽  
Di Tao Niu

The neutralization of fly ash concrete under loads subjected to the simultaneous attack of acid rain was investigated in this paper. And the influence of stress level and fly ash replacement on neutralization of fly ash concrete was analyzed. It was found that, the bending tensile stress accelerated the acid rain attack. The higher the stress level, the more serious the concrete corrosion. In contrast, the bending compressive stress slowed down the acid rain attack. The results also showed that the neutralization depth of fly ash concrete was increasing and concrete corrosion attacked by acid rain was more serious as the fly ash replacement increased.


2011 ◽  
Vol 243-249 ◽  
pp. 5760-5763
Author(s):  
Jian Gang Niu ◽  
Zhen Zhang ◽  
Di Tao Niu

As the deterioration of environment, the effect of acid rain on concrete structures is even more serious. The durability problems caused by acid rain are increasingly concerned by the worldwide. In this paper, the method to simulating acid rain solution in laboratory is proposed and the cyclic soaking-drying to accelerate the acid rain attack is introduced on the basis of the survey and analysis on the components of acid rain around China. Considering that the majority of concrete structures are actually under loads, the load devices for durability test are analyzed, and the devices suitable for the multi-factor durability tests are adopted. The above works will be helpful to carry out the neutralization tests and establish the predicting model of neutralization depth for fly ash concrete.


2012 ◽  
Vol 1 (1) ◽  
pp. 20120026 ◽  
Author(s):  
Trevor J. Looney ◽  
Mahdi Arezoumandi ◽  
Jeffery S. Volz ◽  
John J. Myers

Sign in / Sign up

Export Citation Format

Share Document