Effective stiffness of reinforced concrete section with lightweight blocks infill

Ade Sriwahyuni; Vanissorn Vimonsatit; Hamid Nikraz

Effective stiffness of reinforced concrete section with lightweight blocks infill

Ade Sriwahyuni, Vanissorn Vimonsatit, Hamid Nikraz

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

An experimental program has been conducted to explore the potential use of the developed Lightweight Sandwich Reinforced Concrete LSRC section as beam members. The Autoclaved Aerated Concrete (AAC) is used as infill in the LSRC section. Based on the tested beams, the flexural and shear strengths of LSRC beams are found to be comparable with the strengths of the solid beams having identical height. ANSYS 12.1 was employed to develop nonlinear finite element models of LSRC beams. The beams modelled with ANSYS followed the same trend as the actual beam in the elastic range, however after the first cracking the loss of stiffness inANSYS model caused greater deflection compared to the actual beam. It is obvious that after the first crack the stiffness of sandwich section decrease because the lower elastic modulus of the combined materials. Another investigation is made to compare the behaviour of an LSRC beam with a hollow beam subjected to flexure failure. It is found that the stiffness decreases along with the decrease of the cross section of concrete. The results of the deflections predicted by ANSYS are comparable with the deflection based on the stiffness equation provided by Australian design code.

Original language	English
Title of host publication	From materials to structures
Subtitle of host publication	advancement through innovation
Editors	Bijan Samali, Mario M. Attard, Chongmin Song
Place of Publication	London
Publisher	Taylor & Francis
Pages	381-384
Number of pages	4
ISBN (Electronic)	9780415633185
Publication status	Published - 2013
Externally published	Yes
Event	22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012 - Sydney, NSW, Australia Duration: 11 Dec 2012 → 14 Dec 2012

Conference

Conference	22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012
Country/Territory	Australia
City	Sydney, NSW
Period	11/12/12 → 14/12/12

Keywords

lightweight concrete
stiffness
composite section
sandwich section
ANSYS

Cite this

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title = "Effective stiffness of reinforced concrete section with lightweight blocks infill",

abstract = "An experimental program has been conducted to explore the potential use of the developed Lightweight Sandwich Reinforced Concrete LSRC section as beam members. The Autoclaved Aerated Concrete (AAC) is used as infill in the LSRC section. Based on the tested beams, the flexural and shear strengths of LSRC beams are found to be comparable with the strengths of the solid beams having identical height. ANSYS 12.1 was employed to develop nonlinear finite element models of LSRC beams. The beams modelled with ANSYS followed the same trend as the actual beam in the elastic range, however after the first cracking the loss of stiffness inANSYS model caused greater deflection compared to the actual beam. It is obvious that after the first crack the stiffness of sandwich section decrease because the lower elastic modulus of the combined materials. Another investigation is made to compare the behaviour of an LSRC beam with a hollow beam subjected to flexure failure. It is found that the stiffness decreases along with the decrease of the cross section of concrete. The results of the deflections predicted by ANSYS are comparable with the deflection based on the stiffness equation provided by Australian design code.",

keywords = "lightweight concrete, stiffness, composite section, sandwich section, ANSYS",

author = "Ade Sriwahyuni and Vanissorn Vimonsatit and Hamid Nikraz",

year = "2013",

language = "English",

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editor = "Bijan Samali and Attard, {Mario M.} and Chongmin Song",

booktitle = "From materials to structures",

publisher = "Taylor & Francis",

address = "United Kingdom",

note = "22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012 ; Conference date: 11-12-2012 Through 14-12-2012",

}

Sriwahyuni, A, Vimonsatit, V & Nikraz, H 2013, Effective stiffness of reinforced concrete section with lightweight blocks infill. in B Samali, MM Attard & C Song (eds), From materials to structures: advancement through innovation. Taylor & Francis, London, pp. 381-384, 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012, Sydney, NSW, Australia, 11/12/12.

Effective stiffness of reinforced concrete section with lightweight blocks infill. / Sriwahyuni, Ade; Vimonsatit, Vanissorn; Nikraz, Hamid.
From materials to structures: advancement through innovation. ed. / Bijan Samali; Mario M. Attard; Chongmin Song. London: Taylor & Francis, 2013. p. 381-384.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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AU - Vimonsatit, Vanissorn

AU - Nikraz, Hamid

PY - 2013

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N2 - An experimental program has been conducted to explore the potential use of the developed Lightweight Sandwich Reinforced Concrete LSRC section as beam members. The Autoclaved Aerated Concrete (AAC) is used as infill in the LSRC section. Based on the tested beams, the flexural and shear strengths of LSRC beams are found to be comparable with the strengths of the solid beams having identical height. ANSYS 12.1 was employed to develop nonlinear finite element models of LSRC beams. The beams modelled with ANSYS followed the same trend as the actual beam in the elastic range, however after the first cracking the loss of stiffness inANSYS model caused greater deflection compared to the actual beam. It is obvious that after the first crack the stiffness of sandwich section decrease because the lower elastic modulus of the combined materials. Another investigation is made to compare the behaviour of an LSRC beam with a hollow beam subjected to flexure failure. It is found that the stiffness decreases along with the decrease of the cross section of concrete. The results of the deflections predicted by ANSYS are comparable with the deflection based on the stiffness equation provided by Australian design code.

AB - An experimental program has been conducted to explore the potential use of the developed Lightweight Sandwich Reinforced Concrete LSRC section as beam members. The Autoclaved Aerated Concrete (AAC) is used as infill in the LSRC section. Based on the tested beams, the flexural and shear strengths of LSRC beams are found to be comparable with the strengths of the solid beams having identical height. ANSYS 12.1 was employed to develop nonlinear finite element models of LSRC beams. The beams modelled with ANSYS followed the same trend as the actual beam in the elastic range, however after the first cracking the loss of stiffness inANSYS model caused greater deflection compared to the actual beam. It is obvious that after the first crack the stiffness of sandwich section decrease because the lower elastic modulus of the combined materials. Another investigation is made to compare the behaviour of an LSRC beam with a hollow beam subjected to flexure failure. It is found that the stiffness decreases along with the decrease of the cross section of concrete. The results of the deflections predicted by ANSYS are comparable with the deflection based on the stiffness equation provided by Australian design code.

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KW - stiffness

KW - composite section

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BT - From materials to structures

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A2 - Attard, Mario M.

A2 - Song, Chongmin

PB - Taylor & Francis

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T2 - 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012

Y2 - 11 December 2012 through 14 December 2012

ER -

Effective stiffness of reinforced concrete section with lightweight blocks infill

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Conference

Keywords

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