Concrete cover is often cracked due to e.g. shrinkage, thermal and mechanical loadings, making the service life of concrete structures severely reduced. The diffusivity are strongly dependent on the micro-/meso-structure of concrete. Considering the concrete heterogeneities, cracked concrete at meso-scale is treated as a four-phase composite composed of aggregate particles, cement paste matrix, the interfacial transition zone (ITZ) and crack phase. A meso-scale simulation model for the investigation on the chloride diffusivity into heterogeneous cracked concrete is proposed. In the model, each phase has its own mechanical and diffusion properties. The aggregate is set as impermeable, and the diffusion properties of the cement paste and the ITZs are determined by water-to-cement ratio. For the crack phase, the diffusion coefficient is obtained by fitting the available test data. The accuracy of the developed meso-scale simulation method is verified and discussed. The effect of artificial crack and tortuous crack on the chloride diffusivity is explored. The simulation results indicate that the developed meso-scale model can successfully describe the chloride diffusivity into cracked concrete. Moreover, it is found that the apparent chloride diffusivity in cracked concrete depends on not only the crack width but also the crack depth.
Ocean Engineering – Elsevier
Published: Nov 1, 2015
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.
All for just $49/month
Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.
Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.
It’s easy to organize your research with our built-in tools.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera