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. firstname.lastname@example.org
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
Hospital energy centre connected with heating network
26.11.2015 | FIZ Karlsruhe – Leibniz-Institut für Informationsinfrastruktur GmbH
Innovative Photovoltaics – from the Lab to the Façade
25.11.2015 | Fraunhofer-Institut für Solare Energiesysteme ISE
Chemical weathering of rocks over geological time scales is an important control on the stability of the climate. This weathering is, in turn, highly dependent...
Before the fluid of the middle ear drains and sound waves penetrate for the first time, the inner ear cells of newborn rodents practice for their big debut. Researchers at Johns Hopkins report they have figured out the molecular chain of events that enables the cells to make “sounds” on their own, essentially “practicing” their ability to process sounds in the world around them.
The researchers, who describe their experiments in the Dec. 3 edition of the journal Cell, show how hair cells in the inner ear can be activated in the absence...
Planet Earth experienced a global climate shift in the late 1980s on an unprecedented scale, fuelled by anthropogenic warming and a volcanic eruption, according to new research published this week.
Scientists say that a major step change, or ‘regime shift’, in the Earth’s biophysical systems, from the upper atmosphere to the depths of the ocean and from...
The Fraunhofer Institute for Solar Energy Systems ISE has installed 70 photovoltaic modules on the outer façade of one of its lab buildings. The modules were...
Nerve cells cover their high energy demand with glucose and lactate. Scientists of the University of Zurich now provide new support for this. They show for the first time in the intact mouse brain evidence for an exchange of lactate between different brain cells. With this study they were able to confirm a 20-year old hypothesis.
In comparison to other organs, the human brain has the highest energy requirements. The supply of energy for nerve cells and the particular role of lactic acid...
01.12.2015 | Event News
30.11.2015 | Event News
25.11.2015 | Event News
01.12.2015 | Earth Sciences
01.12.2015 | Life Sciences
01.12.2015 | Earth Sciences