Use of e waste in concrete as a fine and coarse aggregate replacement.Question is related to type of aggregate and size of fine plastic which is replaced with sand.
there is some researchers were used ordinary drinking water bottles (plastic) after cutting for thin strips as a waste materials for reinforcing concrete.
First, it is important to recognize that any time you use an aggregate (including plastic) which is weaker than the cement paste, this will decrease the strength of your concrete. Depending on the application, this may be okay, but should be kept in mind.
Essentially, most plastics are inert to the cement environment and are fairly weak compared to the rest of the matrix. So it may not matter much what type of plastic you use. I would suggest finding out what type(s) of plastic are the most common waste product in your area, and use 2-3 of those. It's important that they be CLEAN and shredded to pieces that are appropriately graded (comparable to the aggregate you are replacing) with a fairly rough surface texture to facilitate good mechanical interlock with the cement paste. Try to use pieces with an aspect ratio close to 1 (unless you're using as fiber), in order to maintain anisotropy of the concrete. Avoid extremely small pieces of plastic, as these will compromise the workability of your mix (like any ultra-fine aggregate).
Finally, I recommend only replacing a small amount (perhaps 5-15%) of the volume of your aggregate using plastic. Do not attempt to replace all of the aggregate (or even more than 30%), as this will severely reduce the mechanical properties of your concrete.
Good luck and keep us posted on how it goes!
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