Pressure Tension: A Standard for Testing Durability Properties of Concrete

peletonwhoopΠολεοδομικά Έργα

26 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

105 εμφανίσεις

Pressure Tension:
A Standard for Testing Durability Properties of Concrete
Introduction


      
       
       
       



        

Samuel Lyster, Julie-Anne Hartell, Dr. Andrew Boyd
Tension VS. Compression
      




            

         

         

Process




        



Concrete
Cylinder
Applied
Pressure
Induced Pore
Pressure
Net Tensile
Pressure
Figure 2: Schematic description of stresses involved
Figure 3: Cracked concrete under (a) no stress, (b)
compressive stress, and (c) tensile stress.
(a)
(b)
(c)
Pressurized
Surface
Rubber
Seal
Steel
Sleeve
Valve
Valve
Free
Surface
Cap
Screw
Concrete
Cylinder
Figure 1: Cross Section of
Pressure Tension Apparatus
Bleed Inlet
Air
Tank
Valve Actuator
Pressure Tension
Chamber
Pressure
Transducer
Bleed
Valve
Data Aquisition
and Control
Feedback
Loop
Air Flow
Electrical Signal Flow
Figure 4: Computerized setup for standardized test
Standardized Test
    

    
      


    

    
    
      
    
