UTILIZATION REPORT FOR HEICO 400 TON CTM
1. About the Equipment: The compression testing machine was
procured from Hydraulic & Engineering Instruments Company
(HEICO) in year 2003. The machine is totally hydraulic servo
controlled and has a capacity of 400 Ton.
Figure 1: 400 ton Compression testing MachineThe machine consist
of load frame, which is a steel welded structure. It is designed to
withstand a few million times of full cycles of loading without any
sign of distortion or fatigue. Even with some eccentric loading,
the frame's stability is not affected at all. These frames are
light in weight. The base carries a fine finished hydraulic ram and
the lower platen. The lower plate has integral jack/bolted jack.
The top plate has the spherical seating to take care of any
irregularity of the specimen surface or slight misplacement of the
specimen from the central position. As a safety precaution front
cover is provided, as a protection to the operator while at the
same time giving an unobstructed view of the specimen under test.2.
Earlier Work: The machine was first used extensively by Mr. Maqsud
E Nazar, PhD scholar under Dr. S. N. Sinha in year 2005. Mr. Maqsud
has worked on interlocking grouted stabilised brick masonry panels.
He has tested 90 specimen under uniaxial cyclic compression with
full unloading, 72 specimen under uniaxial cyclic compression with
partial unloading and 54 specimen under repetitive compression
loading for fatigue behavior. Two size of the test specimens 500 mm
x 700 mm x 100 mm and 500 mm x 500 mm x 100 mm were considered in
the study and tested at five angle (0, 22.5, 45, 67.5 and 90) to
the bed joint.
Figure 2: Loading arrangement used by Mr. MaqsudHis thesis was
published in Dec. 2005 titled Behaviour of interlocking grouted
stabilised brick masonry panels under cyclic and fatigue loading.
In addition to thesis the test results were presented in various
national and international conferences, the list for same is as
below. Maqsud E Nazar and Sinha S.N. (2006), Energy Dissipation
response of interlocking Grouted Mud Brick Masonry under cyclic
loading, Masonry International, journal of British Masonry Society.
pp. 27-40. Maqsud E Nazar and Sinha S.N. (2006), Fatigue behaviour
of Interlocking Grouted stabilised Mud- Fly ash Brick Masonry,
International Journal of Fatigue, USA, Vol. (29), pp 953-961.
Maqsud E Nazar and Sinha S.N. (2006), Influence of Bed Joint
orientation in Interlocking Grouted stabilised Mud- Fly ash Brick
Masonry under cyclic compressive loading, Journal of Structural
Engineering and Mechanics, Korea, Vol. 24, pp 588-599 Maqsud E
Nazar and Sinha S.N. (2006), A Mathematical Model for loading/
unloading stress-strain curves of Interlocking Grouted stabilised
Mud- Fly ash Brick Masonry, 7th International Brick Masonry
Conference, Oct 30-Nov 1, London. Maqsud E Nazar and Sinha S.N.
(2006), Stress-Strain Relations of Interlocking Grouted Mud Brick
Masonry under cyclic loading and partial unloading, 10th North
American Brick Masonry Conference, June 3-6, St. Louis, USA. Maqsud
E Nazar and Sinha S.N. (2007), Loading-Unloading Curves of
Interlocking Grouted Stabilised Sand Fly ash Brick masonry Journal
of materials and structures, RILEM, France, DOI
10.1617/S11527-006-9177-x, Vol. 40 pp 667-678. Maqsud E Nazar and
Sinha S.N. (2007), Behaviour of Interlocking Grouted Stabilised
Sand Fly ash Brick masonry under uniaxial cyclic compressive
loading, Journal of Materials in civil engineering, ASCE, Vol.
19(II), pp 947-956. Maqsud E Nazar and Sinha S.N. (2007), Behaviour
of Interlocking Grouted Brick masonry under cyclic compressive
loading Journal of Bridge an Structural Engineering, INABSE, India,
Vol 37 (I), pp 43-73. Maqsud E Nazar and Sinha S.N. (2007),
Deformation Characteristics of Interlocking Grouted Concrete
Masonry under Uniaxial Compressive loading. Recent advances in
concrete (RAC07), Sept 19-21, Washington DC, USA. Maqsud E Nazar
and Sinha S.N. (2008), Behaviour of Interlocking Grouted Brick
Masonry under low cycle fatigue loading 14th International Brick
and Block Masonry Conference (14IB2M), Feb 17-20, Sydney,
Australia. Maqsud E Nazar and Sinha S.N. (2009), Energy Dissipation
Characteristics of Interlocking Grouted Brick Masonry 11th Canadian
Masonry Symposium, May 31-June 3, Toronto, Canada.Machine was also
used by various M. Tech students under Dr. Supratic Gupta to test
compressive strength of 50-60 cm specimen.There are few other
studies also carried using the machine which are difficult to
document at this stage.3. Current Work: The current work undertaken
by Mr. Nitesh Agrawal, M. Tech student under Dr. Supratic Gupta
involves testing of short column specimen of three different shapes
and concrete grade. The research is aimed to study the enhancement
in compressive strength of concrete columns through confinement by
Glass Fiber Reinforced Polymer (GFRP) laminates. Following size of
specimens are being tested, unwrapped and wrapped with GFRP in 1
and 1.5 layers of concrete grade M20, M25 and M30: Rectangular
Columns, 150mm x225mm x1000mm length Square Columns, 150mm x150mm
x1000mm length Circular Columns, 150mm dia x1000mm length A total
of 54 specimens are planned to be tested, out of which 19 specimens
have been tested. Few of the photographs of ongoing work are
attached below:Figure 3 Axial Compression Test on Columns
SpecimenFigure 4 Column Specimen