Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Collection

toTop

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

home > search >

W/C Ratio Profile in ITZ of Mortar

Author:
Maghsoodi, V.  


Journal:
Arabian Journal for Science and Engineering


Issue Date:
2017


Abstract(summary):

In mortar and concrete, the microstructure of the cement paste is affected by the presence of the aggregate and sand particles and this is most significant in the interfacial transition zone (ITZ). The durability of concrete is affected by the inferior proportion of constituents in ITZ compared with bulk paste, i.e. higher porosity, higher calcium hydroxide (CH), lower calcium silicate hydroxide (C-S-H), and almost no anhydrous in ITZ. This work for the first time investigates the effect of sand size on the proportion of different constituents in ITZ and mortar as a whole. It shows that, as sand size reduces, the shearing force exerted on the paste during mixing increases leading to an increase in C-S-H/CH ratio. Also the effective w/c ratios in the ITZs are calculated for different sand sizes. It is shown that water/cement (w/c) ratio increases with sand size and decreases with distance from the sand surface.


Similar Literature

Submit Feedback

This function is a member function, members do not limit the number of downloads