LAHORE:PROFESSOR Dr. Zahid Ahmed Siddique, Head of the Department of Civil Engineering, University of Engineering and Technology, won the Prime Minister Award for conducting research on Bond strength of Model Steel and other steel .
Professor Dr. Zahid Ahmad Siddique was also given the cash prize for the research work he completed in a record time. He conducted the study to evaluate the bond performance of model steel reinforcing bars. The study was carried out according to the ACI408.2R-92 pullout tests which were conducted on fully automatic strain controlled universal testing machine of Shimazu, Japan. The data was recorded by the data acquisition system of a machine at every 50 millisecond.
The pullout samples were prepared with normal strength concrete having compressive strength of 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 the 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 computerised universal testing machine was used for the tests. The machine has its own data acquisition system. It recorded the data at every 50 millisecond time interval. Moreover being servo controlled, it also provided whole post peak bond behaviour which was not possible with the load controlled ordinary testing machines.The news.
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