Experimental Study on Chloride Diffusion in Structural Concrete considering the Effect of Damages Induced by the Cyclic Impact Loading
- 26 Downloads
An experimental investigation on chloride diffusion in structural concrete under the cyclic impact loading is conducted. Effects of magnitudes and loading times are studied. Relationship between damage coefficients and chloride diffusion coefficients is obtained. The cyclic impact loading causes the initiation of new cracks and the propagation of existing cracks, which brings an obvious promotion for chloride diffusion. There should be a damage threshold. If the magnitude of the external loading is large enough to make the damage exceed the threshold, initiation and propagation of cracks become quite significant and chloride diffusion can be greatly promoted. With the increase of the damage coefficient, the chloride diffusion coefficient increases. The increasing rates decrease with long immersion times. Relationship curves of damage coefficients and chloride diffusion coefficients show a good correlation and can be well described with power functions.
KeywordsChloride diffusion Impact loading Material damage Concrete structure Marine construction
Unable to display preview. Download preview PDF.
This work was supported by the Shanghai SASAC Special support fund for technological innovation and level upgrading of enterprises.
- Alexander M (2016) Marine concrete structures: Design, durability and performance, 1st edition. Woodhead Publishing, Amsterdam, NederlandGoogle Scholar
- Beeby AW (1983) Cracking, cover, and corrostion of reinforcement. Concrete International 5(2):35–40Google Scholar
- Beer FP, Johnston Jr. ER, DeWolf JT, Mazurek DF (2014) Mechanics of materials, 7th edition. McGraw-Hill Education, New York, NY, USAGoogle Scholar
- Carlson SR, Young RP (1993) Acoustic emission and ultrasonic velocity study of excavation-induced microcrack damage at the underground research laboratory. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 30(7):901–907, DOI: https://doi.org/10.1016/0148-9062(93)90042-C CrossRefGoogle Scholar
- Climent MA, de Vera G, López JF, Viqueira E, Andrade C (2002) A test method for measuring chloride diffusion coefficients through nonsaturated concrete: Part I. The instantaneous plane source diffusion case. Cement and Concrete Research 32(7):1113–1123, DOI: https://doi.org/10.1016/S0008-8846(02)00750-0 CrossRefGoogle Scholar
- Eric JH and Victor ES (1999) Numerical simulation of reinforced concrete deterioration: Part 2 — Steel corrosion and concrete cracking. Materials Journal 96(3), DOI: https://doi.org/10.14359/630
- Fu Chuanqing, Jin Xianyu, Jin Nanguo (2010) Modeling of chloride ions diffusion in cracked concrete. Earth and Space 2010, 3579–3589, DOI: https://doi.org/10.1061/41096(366)343
- Hu JS, Li Q (2006) Relevant problems concerning port structure reliability design. Port & Waterway Engineering 394(10):70–73, DOI: https://doi.org/10.16233/j.cnki.issn1002-4972.2006.10.012 Google Scholar
- JTS 167–2018 (2018) Code for design of wharf structure. Ministry of Transportation of the People’s Republic of China, Beijing, ChinaGoogle Scholar
- Liu C, Teng B, Zhang J (2011) Impact velocity of a moored ship. Journal of Waterway and Harbor 32(3):161–167, DOI: https://doi.org/10.3969/j.issn.1005-8443.2011.03.002 Google Scholar
- Luo QZ, Huang ZB (2010) Mechanical model and lateral transient responses of bridge piers in collision with ship. Journal of the China Railway Society 32(6):84–89, DOI: https://doi.org/10.3969/j.issn.1001-8360.2010.06.014 Google Scholar
- Tang L (1996) Chloride transport in concrete — Measurement and prediction thèse. Chalmers University of Technology, Göteborg, SwedenGoogle Scholar
- TJT270-98 (1998) Test specification for concrete of waterway engineering. Ministry of Transportation of the People’s Republic of China, Beijing, ChinaGoogle Scholar