MEL203 MANUFACTURING with NON-METALLIC MATERIALSINDIAN INSTITUTE OF TECHNOLOGY ROPAR [INDIA]PROJECT REPORTTOPIC PAPERCRETEBY MANISH ANAND [P2009ME1103] NARKHEDE SHRIDHAR WASUDEO [P2009ME1077]
Introduction• Papercrete is a recently developed construction material which consists of re- pulped paper fibre with Portland cement or clay .• Paper + concrete=Papercrete• Discovered by Eric Patterson and Mike McCain in year 1928.
Make papercrete• Making papercrete is simple and easy• Use volatile sources – Water + waste paper + portland cement[binder]Tow mixture Add water upto2/3rd height
Tow mixture contents sharp blade• to chop paper and to mix• Rate of rotation determine rate of mixture production Collect waste papers
Put in tank paper + portland cementAfter running the tow mixture forfour to five minute at moderatespeed Must look like this
Pour into gang mold from bottom exitof tow mixtureLevel it equally
Wait for 20-30 minutes so thatexcess water can drain outAfter 3-4 four sunny day Source : snapshots from “DIY How to Make Papercrete in a Tow-Mixer – YouTube”
• Sample data 6000 liters of water +35 kg paper + 40 kg Portland cement Takes 3 days To produce 40 block of size 12 in X 8 in X 5 in Source: ” DIY How to Make Papercrete in a Tow-Mixer – YouTube”
PropertiesPapercrete Concrete Wood• Compressive Strength • Compressive • Compressive – 0.1 MPa -1.2 MPa strength – 60MPa – High but less than concrete – 50 MPa – Much higher• Tensile strength – Much higher • Tensile Strength – Very low • Tensile Strength – 1.9 MPa• R-value – 3 MPa – Resistance to heat flow • R-value • R-value – 1.25/inch – 2-3/inch – 1 -2/inch• Seven times lighter than concrete
Other properties of Papercrete• Sound absorption properties• Papercrete blocks are lightweight, less than a third of the weight of a comparably-sized adobe brick.• Mold Resistance• Flame retardant – does not catch fire easily but smoulders for hours.• Fungus retardant• Lighter than concrete
Impact Energy TestImpact Tester MT 3016 machine Specimen Specifications 10mm x 10mm x 70mm Height of release of Average fracture toughness of hammer=450 mm Papercrete=1.12 J Conventional Mortar=0.24J
Applications and limitations• Large use in house building• Used as sound and heat insulator• Different shapes to decorate houses , flower pots• Large number of shape which generate large area of constructions.• As it is lightweight it could be used in various applications. • Limitations – Building made from this could be only of one story. – Rainy or marshy area are not suited.
Advantage of papercrete• Environmentally friendly-one of the major component is paper lading into the landfills. By using paper in buildings we can significantly decrease the amount of paper landing in the landfills.• Everyone can make with little knowledge• Lightweight but strong.• Easy to use• Insulating• Low cost
Disadvantages of papercrete• As of 2007, papercrete lacks approval from the International Code Council.• Papercrete is not particularly ‘structural’, which means it can’t be used over doors and windows without some additional support – either wood or traditional concrete.• Another disadvantage is that it absorbs water.so we have to protect it from water in the rainy season.• The cost of raw paper will increase as the number of people using the papercrete will increase.
Future• Trying to reduce the amount of concrete required to prepare the papercrete with same strength and also ultimately reduce CO2 amount.• Decrease in the carbon footprint of the house.• Use of different materials at the place of cement such as gypsum and lime.• sustainable construction materials, decorating materials and etc.• Large market in Africa , India , China [because people has less money]
Conclusions• Good choice to utilize waste paper.• Big market India, China, Africa.• Good choice for one story building.• Inner walls of house can be made by papercrete.• No govt. approval-but can be used.• Increase in demand may lead to deforestation.