Try to do geopolymer cement

I used a cement with high percentages of granulated cinder (CEM III/a) and additional I replaced the cement clinker by fly ash (1/3).

Granulated cinder and fly ash are both waste materials.

Hi, Arjun-

If you want to use them as a cementitious material, the first thing that you need to do is to get their chemical composition to see if they can be utilized for such a purpose. 

If your main point of interest is the sustainability advantages of usage of waste plastics, then you may want to try adding them in concrete mixtures as aggregate replacments instead of the cement itself.

Good luck with your research

I suggest that before trying to make cement from plastic waste, you try to read about the chemistry of cementitious materials. Taylor's "Chemistry of Cement" is a good point to start with. Research about alternative cementitious materials is not a new topic and many materials were studies in this regard. Read for example the paper of Gartner and Macphee reviewing the most of the alternative binder systems:

https://www.researchgate.net/publication/251552177_A_Physico-Chemical_Basis_for_Novel_Cementitious_Binders

Article A Physico-Chemical Basis for Novel Cementitious Binders

Hi Arjun

Do you want to incorporate the waste products as filler in the concrete, or are you looking at waste products which could be utilized as cement extenders? Much research is available on both topics, eg google scholar

Or do you want to cut out cement totally and perhaps look at plastic polymers (using lego-type construction)?

Greetings.

I recommend using materials sub-products of industrial processes rich in silice or some pozzolana of oigen ceramic even metacaolin

 Semion Zhutovsky response is on point Arjun. Know the basics and key requirements first...

Hi Arjun,

you can try to replace aggregates with recycled concrete aggregates, check this out: 

Conference Paper Overview of construction and demolition waste legislation in...

Geopolymer with fly ash or/and slags

There is a great scope and potential Mr. Arjun, considering the Indian scenario is concerned. But it is equally challenging too.

Compressive Strength is being regarded as the single point criteria for any new type of developed concrete. But with the addition of waste you will loose concretes compressive strength. Be more judicious in effectively using any kind of waste in the production of concrete.

Hello

Industrial byproducts that are waste materials have a lot of potential, like mr. Bolognini said. My research is related to red mud, byproduct of alumina production. You can even try with different combinations.

Good luck

Since the predominant ingredients present in the cement are silica and alumina,Choose the pozzolonic materials such as GGBS ,fly ash,rice husk ash etc...which should be rich in the alumina and silica,as silica gives strength to the cement and alumina decide the setting time of the cement.

Hello dear you may prepare the cement by utilising Rice husk ash due to high content of amorphous silica which is more reactive than crystalline silica 

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