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Surkhi Masino

Price: Rs. 43.00

Location: Bhimdhunga Kathmandu, Kathmandu

Seller's Mobile: 9813414576    Contact on WhatsApp

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It is used as a substitute for sand for concrete and mortar, and has almost the same function as of sand but it also imparts some strength. Surkhi is made by grinding to powder burnt bricks, brick-bats or burnt clay ; under-burnt or over-burnt bricks should not be used, nor bricks containing high proportion of sand. When clay is especially burnt for making into surkhi, an addition of 10 to 20 per cent of quick lime will improve its quality ; small clay balls are made for burning Surkhi for plaster may be made from slightly under-burnt bricks, and ground very fine ; this will improve the hydraulicity of fat lime. Surkhi must be well mixed with lime, preferably in a mortar-mill. (Test for under- burnt bricks is that they should not dissolve in water). Surkhi mortar gains strength if left immersed in water. It can be used in all situations where surkhi can be used to give superior performance. Surkhi makes cement mortars and concretes more water proof, more resistant to alkalis and to salt solutions than those in which no surkhi is used. This admixture is known to reduce the temperature rise during hydration in a mass cement concrete and reduce cracking. It is also useful in sea-water construction, in structures which are subject to attack from aggressive ground waters or industrial waters, and in hydraulic structures where water tightness is the first consideration. Surkhi mixed cement concrete is more plastic, bleeds less and segregates less as compared to ordinary cement concrete. A surkhi concrete of 25 to 50 mm slump is just as readily placed as a corresponding straight cement of much higher slum. The proportion of surkhi recommended is 10 to 30 per cent of cement (cement will be proportionately less) but it must be ground as fine as the cement. Surkhi should riot be added to aluminous cements. Surkhi is added both in mortar and concrete For more information: 9813414576 & 9851184037 Email : [email protected]

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