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Define Non-destructive inspection of Concrete Substructures?
If there is evidence of significant deterioration, then a Level III inspection, involving either non-destructive or destructive tests, may be required. Some of the NDT equipments that can be used for underwater examination of concrete are:
- Rebound Hammer
- Ultrasonic system
- Magnetic Rebar Locator
Each instrument consists of an underwater sensor connected to a topside deck unit through an umbilical cable. The deck unit contains the signal conditioning electronics and data acquisition system. To operate the instrument, the diver has to position the underwater sensor on a previously cleaned portion of the structure surface, and person topside operates the data acquisition system in order to collect and store the data.
Durability requirements for Concrete Even though the alkaline environment of concrete protects steel, carbonation of hydrated cement may decrease the effective protection. The
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Determine the Limit States of Collapse Those limit states which point out the failure or collapse of a structure based on certain critical conditions are known as limit states
Most of the existing rubber dams are of air-filled types. Water-filled rubber dams aren't preferred for the below reasons: (i) By giving same sheet length and dam height, tensi
Q. Illustrate Shaft grouting for friction barrettes? For the construction of friction barrettes, some grout pipes are designed at periphery of the barrettes. Within a short dur
im newer to the courses so i would like to know about the assignment types. in this case can u please show me a sample assignment?
what is meant by white topping cement
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Q. Write short notes on the following : a) Points to be kept in mind while collecting water samples for testing from tap, stream & T/well separately. b) Where and why foot
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