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Explain the Ion Exchange water Softening
Softening is usually done using a resin (natural or synthetic long chain chemical with a sodium ion attached). When water containing hardness ions is passed through the resin, the hardness ions (Ca, Mg) exchange with Na ions on the resin (thus the resulting water is free of hardness ions but high in sodium).
When the sodium ions on the resin are exhausted, the resin is regenerated using a brine solution (which replaces all hardness ions attached to the resin with Na ions again) and the resin can be used again.
A sand at a borrow pit is determined to have an in-situ dry unit weight of 18.4 kN/m 3 . Laboratory tests indicate the maximum and minimum unit weight values of 19.6 kN/m 3 and
water cement ratio
Passenger Terminal Building: Importance In a civil airport, the passenger terminal building is the centre of all activities. It services both inbound and outward boun
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Explain the shrinkage strain of concrete Shrinkage of concrete depends only on the interval of time and the moisture conditions, but is independent of the stresses in the membe
Question For a rigid pile cap with vertical piles at middle and raking piles at the sides, what is pattern of load distribution of piles in such agreement? Answer Becau
Define Ways of providing the anti slip device - By Bolting? The elastomeric bearing can be vulcanised with a stainless steel outer plate. The stainless steel plate is provided
Explain about Lee-Mccall system
describe and sketch a survey chain
After measuring the anticipated traffic for the bridge, cement/reinforced- with- rebar stanchions are spaced over the freeway to accommodate the bridge. An 'off-ramp' from the free
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