Srinivasa Pipe Industries complies with the standards laud down under IS 458/2003 specifications and hence is a chosen vendor for various Govt. of India projects and Corporate Infrastructure Projects
The RCC Hume Pipe are manufactured by spinning concrete mix at a high speed. The cast is allowed to set and later taken off. Pipes are submerged in water for curing.
Due to increasing requests for Socket-and-spigot type pipes, we have started manufacturing and supplying NP3 class pipe of 450 mm dia 2.5 mtr length.
You may call/email us for a quotation. Contact details are available here.
Concrete pipes (reinforced or non-reinforced, NP or P class) are classified as follows:
Gujarat plans to invest Rs 60,000 Crore to increase the installed capacity from 20 million tonnes pa to 70 million tonnes pa in a span of 5 years.
Gujarat was at 5th postion during 2008-2009 (Statistice released by Cement Manufacturers’ Association, New Delhi) in terms of installed capacity for cement production. The state looks forward to be the cement capital of India.
The chemical reaction between water and cement (known as hydration) causes the cement structure to harden and gain strength. The space occupied by water (water-space) in the concrete mix is either replaced with cement-gel (produced as a result of hydration), or due to evaporation (particularly on the outer portions of the structure).
Hydration stops when the water-spaces are either filled with the cement-gel (good) or when no water is available (bad). If hydration stops due to lack of water, the atmospheric carbon-dioxide reacts with any of the partially-formed cement-gel preventing hydration forever. The un-hydrated cement particles, which would have provided strength on hydration, are useless now.
Refilling the lost water to continue the hydration process is known as Curing.
The curing methods depend on the RCC product and the site where the RCC structure/product is built/manufactured.
RCC pipes are placed in a water tank. Spraying would be ineffectual for controlling water loss from the inner surface, specially when a huge batch of pipes are being cured.
A batch of pipes submerged in water for curing.
Concrete mix with low water-cement ratio provides better strength.
Cement requires water (1/4th the quantity of cement) for it to react and aquire stone-like properties.
However, 1:4 water-cement ratio doesn't give a workable mix to have a proper cast. Additional water is required.
This additional water leaves as the concrete matures, leaving pores on the RCC product. These microscopic pores are desirable for expansion and contraction of the product with changing weather conditions. However, too much of water causes internal cracks, reducing the strength of the product.