Experimental Study on Accelerating Impairment of Cement-based Materials under Restrained Condition

Author(s): Huaicheng Chen, Chunxiang Qian and Haoliang Huang
Paper category: Proceedings
Book title: 3rd International RILEM Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): Changwen Miao, Wei Sun, Jiaping Liu, Huisu Chen, Guang Ye and Klaas van Breugel
Print-ISBN: 978-2-35158-188-9
e-ISBN: 978-2-35158-189-6
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 401-407
Total Pages : 7
Language : English

Abstract: Due to the high concentration of harmful chemical ions and complex environment, the service performance of concrete materials and time-varying of the concrete in the marine environment would not be the same as its in the normal condition. The property degradations of cement-based materials was studied under free and restrained condition with dry-wet cycles in artificial sea water. The experimental results indicated that the microstructure of cement-based materials changed obviously after degraded 120 cycles under restrained condition with drying-wetting cycles in sea water, and the growth rate of total pore volume reached 28.58%. SEM/EDS and XRD analysis showed that the crystalline mixture on the surface of cement-based materials was mainly composed of sodium sulphate, sodium chloride, magnesium sulphate.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00