Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Understanding the interacted mechanism between carbonation and chloride aerosol attack in ordinary Portland cement concrete
AbstractAn experimental study is carried out with the aim to understand the interacted mechanism between carbonation and chloride aerosol attack in ordinary Portland cement (OPC) concrete. Effects of carbonation on the chloride profile, the chloride binding capacity and the chloride diffusion coefficient are evaluated. Besides, effect of chloride aerosol attack on the carbonation rate is investigated. Concrete specimens with three water-to-cement ratios (0.38, 0.47 and 0.53) are fabricated in this work. Tested results demonstrate that carbonation remarkably affects the chloride profile, reduces the chloride binding capacity, and also accelerates the rate of chloride ion diffusion of concrete. Besides, the presence of chloride aerosol can lead to lower the carbonation depth and increase the pH value of carbonated concrete. Microscopic properties such as morphology, porosity, and pore size distribution for the contaminated concretes are explored by scanning electron microscope and mercury intrusion porosimetry, which provide strong evidence to these research findings.
Understanding the interacted mechanism between carbonation and chloride aerosol attack in ordinary Portland cement concrete
AbstractAn experimental study is carried out with the aim to understand the interacted mechanism between carbonation and chloride aerosol attack in ordinary Portland cement (OPC) concrete. Effects of carbonation on the chloride profile, the chloride binding capacity and the chloride diffusion coefficient are evaluated. Besides, effect of chloride aerosol attack on the carbonation rate is investigated. Concrete specimens with three water-to-cement ratios (0.38, 0.47 and 0.53) are fabricated in this work. Tested results demonstrate that carbonation remarkably affects the chloride profile, reduces the chloride binding capacity, and also accelerates the rate of chloride ion diffusion of concrete. Besides, the presence of chloride aerosol can lead to lower the carbonation depth and increase the pH value of carbonated concrete. Microscopic properties such as morphology, porosity, and pore size distribution for the contaminated concretes are explored by scanning electron microscope and mercury intrusion porosimetry, which provide strong evidence to these research findings.
Understanding the interacted mechanism between carbonation and chloride aerosol attack in ordinary Portland cement concrete
Liu, Jun (Autor:in) / Qiu, Qiwen (Autor:in) / Chen, Xiaochi (Autor:in) / Xing, Feng (Autor:in) / Han, Ningxu (Autor:in) / He, Yijian (Autor:in) / Ma, Yueshan (Autor:in)
Cement and Concrete Research ; 95 ; 217-225
28.02.2017
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2017
| British Library Online Contents | 2017
Chloride Resistance of Ordinary Portland Cement Concrete
| British Library Online Contents | 1998
Modelling of Carbonation and Chloride Penetration Interacted by Frost Damage in Concrete
| British Library Conference Proceedings | 2011
Carbonation of hydrated Portland cement
| TIBKAT | 1958