LAHORE: Professor Dr Zahid Ahmed Siddique, Head of Department of
Civil Engineering, University of Engineering and Technology, won Prime
Minister Award for conducting research on "Bond strength of Model Steel
and other steel".
Professor Dr. Zahid Ahmad Siddique was also
given cash prize for the research work he completed in record time. He
conducted the study to evaluate bond performance of Model Steel
reinforcing bars. The study was carried out according to ACI408.2R-92
pullout tests were conducted on fully automatic strain controlled
universal testing machine of Shimazu, Japan. The data was recorded by
data acquisition system of machine at every 50 milli second.
The
pullout samples were prepared with normal strength concrete having
compressive strength 30 MPa. The recorded slump value was 85 mm. The
embedded length was selected to be 12 d.
These pullout samples
were put in a specially designed assembly to grip them in testing
machine. This assembly has the arrangement to eliminate any
eccentricity during casting of the samples. The tests were conducted
after 28 days.
State of the art strain controlled fully
computerized universal testing machine was used for the tests. The
machine has its own data acquisition system. It recorded the data at
every 50 milli second time interval. More over being servo controlled
it also provided whole post peak bond behaviour which is not possible
with load controlled ordinary testing machines. Online
