Ayah Tariq Jawad (graduate student) obtained a master's degree with a
"very good" from Building and construction engineering department in the
university of technology overall its research:
(The practical study to the deep compound concrete thresholds.)
In the discussion that was held on the late Professor Hall ( Dr. Naama
Hamad Amara ) in the same department.
The committee consisted of professors: Dr. Tarek Saleh al-Attar from the
Technology University President, Dr. Walid Awwad Warush from
Mustansiriya University, Dr. Wael Shawky Abdul Saheb as members and.D.
Nabil Abdul Majid Gdoa, Dr. Alaa Kamal Abdul Karim, all of whom are
supervisors from the University of Technology.
The main objective of the research was to conduct a study to the deep
compound concrete thresholds, which was support Simple, deep, consisting
of iron segments ( I - Steel section ) totally buried in the deep
concrete threshold.
A practical program of pouring an eight deep armed of concrete
thresholds and then examined under the influence of pregnancies two
straight-through cables. All thresholds of deep space evenly (1400) -MM
segment of static display (150 mm depth) holistic (400) mm.
Then, several measurements were made during a test thresholds, which
included the following: (a horizontal offset pinholes by mid-threshold,
activation of concrete surface in different locations, Load causing to
cracked highways covered to bow, Leaning brittle, this output from the
strong influence of snipping in addition to The load measurement maximum
failure.
The experimental results obtained from the test deep concrete thresholds
indicate that the change in the type of reinforcing iron bars to iron
sheets led to a decrease in maximum load by 31, 9 % to the increase in
resistance to anti-pinch of rebar with 24- 38 more than the value of the
maximum load of 12, 17 percent, while the value of the horizontal
taskforce threshold in the center space decreased by 18, 40 percent.
The increase was attributed ( A/D ) From 1.0 to 1.4, there is a low
pregnancy maximum by about 3.82 percent and an increase of precipitation
in mid-space horizontal threshold increased by 33, 46 % when increased
the thickness of the laminate 2to 4 mm increased the maximum load of 58,
fell 6 percent in mid-space taskforce horizontal threshold by 5, 29 % in
addition to that, it was found that the horizontal offset pinholes is
the smallest of the precipitation in mid-space horizontal threshold in
all of the tests, and there is no slippage between concrete and iron the
results also indicated that there is a correlation between segment full
iron and concrete. |