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Question
What is key principle of adding cooling pipes or yet using cold water for concrete in concreting operation?
Answer
These methods aim at reducing placing temperature and falling thermal cracks induced during concreting of enormous pours. Because final concreting temperature has to be ambient temperature, reducing initial placing temperature will also lower peak hydration temperature. Therefore, temperature divergence between hydration peak and ambient temperature is reduced so and subsequently thermal effect to concrete structure can be abridged by controlling placing temperature.
Carbonate Hardness (CH) - Water Softening Ca +2 , Mg +2 combining with alkalinity (OH - , CO 3 -2 , HCO 3 - ). If alkalinity is present in water the CH wil
Question What is the reason that shallow bedrock condition adverse for open berth piers? Answer Most severe load on piers generally is horizontal load due to berthing
Two readings ie 1.64m and 0.73m were taken during leveling procedure to define the slope of a centerline of a bridge at points A and B. If distance AB=50 m, find the slope of line
Define the Rectangular Weirs Sometimes referred to as "sharp crested weirs" if the top edge of the weir plate is narrow
Location and spacing of borings The location, spacing of geophysical profiles, soundings and borings should be such that, you will be in a position to accurately predict the
Question What is key application of inverted siphons? What are major drawbacks of using inverted siphons ? Answer Inverted siphons are planned at locations in which sewer s
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What is the Loss of Prestress due to Shrinkage of Concrete It is the loss of prestress due to shrinkage of concrete, which takes place in the initial stage of hardening of conc
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Define Diving Operation - Preparation for underwater inspection? Use of experienced divers trained and screened by a reputed commercial diving school is critical for successful
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