Authors
Ritu Sarkar
Abstract
Along with the sources such as deforestation and burning of fossils fuels, cement manufacturing industry is one of the chief sources to release carbon dioxide. In earth atmosphere, 7% of green-house gas emission is contributed only by the global cement industry. There is a need to develop substitute binders to reduce the environmental effects related with cement manufacturing and consuming natural assets constantly and also for making the concrete industry justifiable. For preparing concrete just like other materials such as GGBS, Rice Husk, Glass Powder, Fly ash, Phospogypsum etc., paper sludge ash is considered as the alternative binding material and also have great impact on the environment. To develop cost-effective building materials from paper sludge ash is the most important to comfort environmental effect and to produce low cost concrete. Portland cement is partially replace by the papercrete which is considered as new composite material prepared by the waste papers. This papercrete not only reduce the amount of cement but also works as the environment friendly buildings materials. This study presents the impacts of paper sludge made papercrete on the environment and its preparation. Keywords: Paper Sludge, Cement, Environment Pollution, Papercrete
Introduction
Cement is a substance act as binder which sets and hardens and binds other alternative materials along with it. The word cement came from the Romans, after that “opus caementiciumto” is the word which were used by the UN agency which resembles with the fashionable concrete in which, calcined lime with the combination of rock is present and describing the masonry. Later, the additives of calcined lime to get a hydraulic binder such as volcanic ash and small grained brick additives were brought up as cimentum, cäment and cement.
The non-hydraulic cements sets in the air because it dries and reacts with carbon dioxide but does not fix in wet conditions or atmosphere and underwater.
Replacement of a number of cement at the time of combining with pozzolanas, like as and activated metal silicates creates the hydraulic cement. Hydrates are indicated by the chemical action that does not dissolve, protected from chemical attack and durable in water. This is best for the wet environment and condition and for underwater, also protects from the chemical attack to the hardened material. Volcanic ash is used as the action for portland cement which is found by ancient Romans. Up to four hundredth of cement is represented as pozzolanas. In masonry, an element within the production of mortar and of concrete is measure by the most necessary uses of cement square. Cement makes a thick paste with the combination of water and has fine grayish color. Concrete is prepared when the cement paste is mixed with sand and gravel and dried.
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| APA Style | Sarkar. R. (2019). Papercrete: A Partial Replacement of Concrete Ingredients. Academic Journal of Physical Sciences, 1(1), 26-31. |
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