Wet-Joint Techniques for the Construction of Precast Concrete Pipe Rack Structures in Remote Seismic Zones

PCI Journal ◽  
2017 ◽  
Vol 62 (6) ◽  
Author(s):  
Marco Breccolotti ◽  
Massimo Federico Bonfigli ◽  
Valerio Colone ◽  
Annibale Luigi Materazzi ◽  
Bruno Pasqualini ◽  
...  
Keyword(s):  
Precast Concrete ◽  
Seismic Zones ◽  
Concrete Pipe

Development of a new class of precast concrete pipes - an experimental evaluation

2007 ◽  
Vol 34 (7) ◽  
pp. 885-889 ◽  
Author(s):  
H El Naggar ◽  
E N Allouche ◽  
M H. El Naggar
Keyword(s):  
Experimental Evaluation ◽  
Solid Wall ◽  
Research Effort ◽  
Precast Concrete ◽  
Load Test ◽  
Added Value ◽  
Structural Performance ◽  
Concrete Pipes ◽  
Concrete Pipe ◽  
Cellular Concrete

Concrete pipes represent the backbone of the municipal storm and wastewater collection systems of Ontario, Canada. Industry and academia partnered on a research effort that aimed at developing new precast-concrete pipe products that provide added value to the final user in comparison with existing products. This paper describes a full-scale experimental evaluation of the design, manufacturing, and performance aspects of a "cellular" concrete pipe, a precast concrete pipe in which multiple continuous conduits were incorporated within its wall. Two fully-instrumented prototype segments of the proposed cellular concrete pipe were manufactured using standard dry-cast manufacturing procedures. The pipe segments were subjected to a D-load test to evaluate their structural performance. The observed structural performance was found to be comparable to solid-wall specimens, particularly when a four-conduit configuration was used. Of the six materials used as conduits, PVC and aluminum were found to perform the best. The presence of the conduits appears to delay the on-set of major cracks, thus increasing the D-load value. Key words: precast, concrete, pipe, experimental, conduit system, trenchless construction methods.

scholarly journals Critical Analysis of International Precast Concrete Pipe Standards

2018 ◽  
Vol 3 (3) ◽  
pp. 18 ◽  
Author(s):  
Lui Wong ◽  
Moncef Nehdi
Keyword(s):  
Critical Analysis ◽  
Precast Concrete ◽  
Concrete Pipe
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