Experiment 01

Experiment 01 : 4 specimens
Examine: how papercrete blocks are produced.
Form: Wooden 4mm mdf, glued together covered with foil to prevent water passing to the wood.
Remove form: day 3

Paper pulp - portland cement - sand - water

Pour mix into forms

 

Day 3: Drying period is different in every mix

Specimens 7 days after the production

 

 

 

 

 

 

 

 

 

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About Menelaos Kokkinos

Menelaos Kokkinos TU Delft mgkokkinos@gmail.com
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4 Responses to Experiment 01

  1. akolo thomas says:

    this info on papercrete is going to be really helpful in doing my final year project. i stumbled on this papercrete during on of my assignments on the new building materials in the internet.

    • In two months that I will finish my research and I will have a more complete image about material behavior. Please let me know if you need any more information regarding the materials properties. What is your project about?

  2. Prabu says:

    This is very helpful.I am just now started to do the project instead of papercrete,paper concrete by adding coarse aggregate as well.Can you guide with respect to the mix proportion & Water cement ratio particulars please?

    Praburanganathan@yahoo.com

    • The mix that I finally used was 2.4: 5.1: 2.5: 14lt every 1Kg (Newspaper: Cement: Sand: Water) but it can widely vary depending the climate, the kind of forms you pour the mix into and off course the use of the mix.
      In mixture proportioning the most important factor for the success of the product was a proper water-cementitious materials ratio (w/cm). The cellular structure of lightweight aggregates allows the absorption of water. . The total water requirement of lightweight concrete will be different than normal weight concrete. Due to the inherent higher total moisture content of lightweight concrete it typically takes a longer time than normal weight concrete to dry. Papercrete have higher water demands compared to the normal concrete because the paper fibres absorb a lot of water. It also affects the density the compressive strength and the drying period. The ratio should be kept as low as it starts to create workable mix, in order to
      • increase the strength and durability
      • avoid unnecessary shrinkage in the moulds
      • decrease drying period
      But you have to be careful because low water-cement ratios leads to lower permeability which may result to a not fully hydrated cement.
      If you have any other questions please let me know, I will be pleased to help.

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