Talk:Nanoconcrete
Latest comment: 5 years ago by HopsonRoad in topic Unsourced material
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Unsourced material
editHi Nateri Kalidas,
I appreciate your contribution of material, which I have temporarily removed from the article and placed here because of the following issues:
- It is unsourced. See: Wikipedia:Reliable sources If you use Visual Editor, you can use the "Cite" button to drop in a url and have it automatically generate a citation at the right place.
- It reads like an essay. See: Wikipedia:Writing better articles#Information style and tone
- It seems to have material that is not integrated into the article, just dropped at the end.
- There are some grammar and usage issues.
Here is the material that you contributed:
- Nano Concrete: Concrete is a known product constituted of cement, fine aggregate and coarse aggregate which attains workability upon added with water and mixed thoroughly. While the resultant mass do set and harden, resultant concrete contains pores of certain micron size, which are popularly called as micro pores.
- Concrete is taught in academic circles since ages as a product of three ingredients viz. cement-sand-stone. It is also taught that stone is the strongest constituent of concrete to bind which cement is used and sand fills up the voids together with cement among stone. This explanation gives an impression that without stone there is no strength to concrete. But it is a paradox that, while the grade of concrete needs to be increased, input of stone is decreased and cement is increased, giving total credence of concrete strength to cement or cementitious input.
- Upon subjecting the concrete for strength test, one can observe the fractured face (shear) of concrete all along the surface of stone ie., the interface of stone with cement paste, popularly called as transition zone, which is the weak link that decides the grade strength of concrete. This is where the research idea emerged; because there is stone there is transition zone that has a say on strength; if stone is avoided in concrete transition zone could also be avoided so much so the weak zone in concrete too. While there is no stone there is no role for sand also. This is how Nano Concrete is conceived.
- For the first time in the history of concrete, this patented product [cast with Nano Concrete by inventors as the first field level demonstration.] is developed in 2010 without using aggregate at all, neither fine aggregate nor coarse aggregate. Hence the inventors of this product christened it as No-Aggregate Concrete (NAC). Selective fly ash is added with minor portion of cement to develop this innovative concrete, containing least water ratio of 12-15% in the presence of special chemical admixture. The superfine fly ash particles of a few nano meters worked as pozzolan to the extent of their reactivity, and micro aggregate to the extent of inert particles. Resultant concrete has shown up with least permeability for having developed pore refinement, containing nano pores. Hence the inventors have also named it as 'Nano Concrete'. While it is possible to develop a strength of 20-30 MPa in conventional concrete with 320 kg of OPC per cu.m of concrete, for the same cement input Nano Concrete can render 50-80 MPa strength depending on fly ash quality and water input.
- Nano Concrete Dome over FaL-G Mansion
- Development of NAC Aggregate (NACA): Various types of stones are used to produce coarse aggregate, right from lime stone with strength of 50 MPa to granite with that of 250 MPa. But 80% of concrete used for various structures is with strength of 20-30 MPa, proving the strength of stone (coarse aggregate) as redundant. Hence it was considered that moderate strength of NAC at 50-80 MPa against that of natural stones is sufficient to meet the strength of concrete. There upon NAC stone is produced and subjected for crushing in commercial crushers. Concrete of 50 MPa could be produced in field using NACA. National Thermal Power Corporation (NTPC), the giant power producer, has constructed a two-storeyed demo-house in their premises at Visakhapatnam, India. Notwithstanding engineering aspects which are already proven on field, upon proven with all other logistics, NACA is going to emerge as the opportunity for mass scale fly ash utilisation. Above all, NACA is the product of sustainable development.
I'd be happy to help, once you have identified some reliable sources. Cheers, HopsonRoad (talk) 19:05, 8 November 2019 (UTC)