Condition monitoring for water and sewerage pipes is essential the safety of environment, energy conservation human health. This paper focuses on application acoustic ultrasonic techniques detection assessment leaks, blockages defect in buried pipes. The review includes methods (below 20 kHz) based vibration sensing using accelerometers, hydrophones fibre optic sensors, (above propagation bulk ...

Cracks will be generated due to high internal temperature of the massive concrete. Postcooling method is widely employed as a standard cooling technique decrease poured mass In this paper, an annular finned pipe which can increase heat transfer area between flowing water and its surrounding concrete proposed enhance effect postcooling method. Analysis interior variation distribution block coole...

High-density polyethylene pipes (HDPE), crossbonded polyethylene pipes (PEX) and polyvinyl chloride (PVC) pipes for drinking water were tested with respect to migration of volatile organic components (VOC) to water. The odour of water in contact with plastic pipes was assessed according to the quantitative threshold odour number (TON) concept. A major migrating component from HDPE pipes was 2,4...