UiTM researchers have found that steel tubes filled with foam concrete was inferior in strength as compared to that of normal concrete.
A team of researchers from the Faculty of Civil Engineering, UiTM, studied the use of foam concrete as infill for steel tubes that were used in construction.
Concrete-filled steel tube (CFST) structure is a composite structure and consists of a steel tube that is filled up with concrete. There are many advantages of using composite structure as compared to conventional reinforced concrete (RC) structure and steel structure.
Steel tubes infilled with composite foam concrete are cheaper and it is easier to use in construction. The application of this composite structure has become increasingly popular in structural applications.
However, the use of foamed concrete as infilled material is rare and has not been studied comprehensively. Thus, this research was conducted to investigate the strength and structural behaviour of CFSTs filled with different densities of foamed concrete and with different replacement levels of Waste Paper Ash (WPSA) to cement by weight under axial (compression) loading.
All CFST column specimens were loaded on the entire surface of the CFST column specimens under axial loading. The results of the experiment showed that the series contained different densities of the foamed concrete failed at loads less than 90% of the analytical values.
It also appears that the ultimate strength of the CFST specimens mainly depends upon the strength of the infill material. The study found that the CFST specimen that is infilled with concrete attain higher strength than those of without infilled concrete.
It was found that the CFST that was infilled with foam concrete was notably inferior in strength as compared to that of normal concrete. However, higher strength of CFST is achieved when higher density of foamed concrete is adopted as infilled material.
For more information, contact
PROF. DR. HANIZAH ABDUL HAMID. email@example.com
PROF. DR. AZMI IBRAHIM
ASSOC. PROF. DR. HAMIDAH MOHD. SAMAN
ARUAN EFFENDY MOHD. GHAZALI
MOHD. RAIZAMZAMANI MD. ZAIN
Faculty of Civil Engineering
Universiti Teknologi MARA
40450 UiTM Shah Alam
SELANGOR D. EHSAN
Construction Impact Guide
18.05.2018 | Hochschule RheinMain
New, forward-looking report outlines research path to sustainable cities
24.01.2018 | National Science Foundation
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
16.07.2018 | Physics and Astronomy
16.07.2018 | Life Sciences
16.07.2018 | Earth Sciences