sandwich composite foamed concrete panel
TRANSCRIPT
PRESENTERNur Amira Binti Amirudin
SUPERVISORSr Dr Md Azree Othuman Mydin
We leadINTRODUCTION
“Lightweight foamed concrete defined as a cementitious material contain of 20% foam in slurry mortar”(Van Deijk, 1992)
“Lightweight foamed concrete defined as a cementitious material contain of 20% foam in slurry mortar”(Van Deijk, 1992)
“Lightweight foamed concrete consists of many air voids or cells or well known as cellular concrete. (Wan Abdullah Wan Alwi, 2009).
“Lightweight foamed concrete consists of many air voids or cells or well known as cellular concrete. (Wan Abdullah Wan Alwi, 2009).
“ Have suffered of challenges and obstacles of rising costs of building materials which directly will increase the overall construction cost” (CIDB, 2006)
“ Have suffered of challenges and obstacles of rising costs of building materials which directly will increase the overall construction cost” (CIDB, 2006)
“A wide range of densities from 550 to 1700 kg/m3 of foamed concrete can be produced ” (PCI Committee, 1997)
“A wide range of densities from 550 to 1700 kg/m3 of foamed concrete can be produced ” (PCI Committee, 1997)
We leadPROBLEM STATEMENT
Primary use of lightweight concrete material is to reduce the total loads of building.In construction industry usually use as non load bearing structure and less load impact.Shear connectors help in distribution of load impact, increase the strength, enhance the load bearing capacity
We leadOBJECTIVES
We leadLITERATURE REVIEW
We leadMETHODOLOGY
Dimensional view
We leadMETHODOLOGY
Compressive Test
We leadMETHODOLOGY
Mix Proportion
Material
Dry Density
(kg/m3)
Cement to sand
ratio
Water to
cement ratio
Cement content
(kg/m3)
Sand content
(kg/m3)
1400 1:2.3 0.43 45.15 103.84
700 1:2.3 0.43 10.68 16.02
We lead
DATA ANALYSIS & DISCUSSION
2.91
3.293.44
3.61 3.82
0
0.5
1
1.5
2
2.5
3
3.5
4
Ave
rage
Str
engt
h (
N/m
m2 )
No Screw 5 screws 7 screws 9 screws 13 screws
Number of Mechanical Connectors
Highest Strength 3.82 N/mm2
Lowest Strength 2.91 N/mm2
Graph 1 : Stress versus strain relationships of sandwich panel with 5 shear connectors
We lead
DATA ANALYSIS & DISCUSSION
Test designation
Number of Mechanical Connectors
Maximum Strain ()
Average Maximum Strain ()
Panel 5a5
0.000550.00056Panel 5b 0.00057
Panel 5c 0.00056Panel 7a
70.00047
0.00048Panel 7b 0.00049Panel 7c 0.00048Panel 9a
90.00044
0.00044Panel 9b 0.00041Panel 9c 0.00046
Panel 13a13
0.000360.00037 Panel 13b 0.00038
Panel 13c 0.00037Table 1 : Maximum strain () of composite panel under axial compression
Axial Stress-Strain Curve
We lead
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0 0.0001 0.0002 0.0003 0.0004 0.0005 0.0006
Axial Strain
Axi
al S
tres
s (N
/mm
2 )
Panel 5aPanel 5bPanel 5c
Highest strain panel 5b 0.00057
Lowest strain panel 5a 0.00055
Graph 2 : Stress versus strain relationships of sandwich panel with 5 shear connectors
We lead
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0 0.0001 0.0002 0.0003 0.0004 0.0005
Axial Strain
Axi
al S
tres
s (N
/mm
2 )
Panel 7aPanel 7bPanel 7c
Highest strain panel 7b 0.00049
Lowest strain panel 7a 0.00047
Graph 3 : Stress versus strain relationships of sandwich panel with 7 shear connectors
We lead
Graph 4 : Stress versus strain relationships of sandwich panel with 9 shear connectors
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0 0.0001 0.0002 0.0003 0.0004 0.0005
Axial Strain
Axi
al S
tres
s (N
/mm
2 )
Panel 9aPanel 9bPanel 9c
Lowest strain panel 9b 0.00041
Highest strain panel 9c 0.00046
We lead
Graph 5 : Stress versus strain relationships of sandwich panel with 13 shear connectors
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0 0.0001 0.0002 0.0003 0.0004 0.0005
Axial Strain
Axi
al S
tres
s (N
/mm
2 )
Panel 9aPanel 9bPanel 9c
Lowest strain panel 13a 0.00036
Highest strain panel 13b 0.00038
We lead
Mode of Failure
We leadCONCLUSION
The sandwich composite foamed concrete revealed can sustained the load bearing with increasing numbers of shear connector
Sample with shear connector achieved high performance in compressive strength
Insulation layer of 700 kg/m3 contributed in compressive strength with external composite 1400 kg/m3
We leadREFERENCES
• Aicher S. And Hofflin L. (1999). Long-term Performance Test of Eccentrically Loaded Sandwich Wall Elements With Wood-Based Skins. Otto-Graf-Journal, 10, pp:128-142
• American Concrete Institute (1989). ACI 213R. Guide For Structural Lightweight Aggregate Concrete. Farmington Hills, MI. American
Concrete Institute. • Benayoune, A, Samad, A.A.A., Abang, A.A.A. and Trikha, D.N. (2007a) Response of Precast Reinforced Composite Sandwich Panels to axial
Loading. Construction and Building materials. 21(3): 677-685. • Benayoune, A, Samad, A.A.A., Abang, A.A.A. and Trikha, D.N. and Ashrabov, A.A. (2006). Structural Behaviour of Eccentrically Loaded
Precast Sandwich Panels. Construction and Building materials. 20 (9): 713-724. • British Standard Institution (1991). Specifications for Portland Cement. London BS12.
• Einea, A, Salmon, D.C., Tadros, M.K and Culp, T. (1995). Partially Composite Sandwich Panel Deflection, ASCE Journal of Structural Engineering. 121(4): 778-83
• Jeom K. P., Thayamballi A. K,. And Kim G. S. (1999). The Strength Characteristics of Aluminium Honeycomb Sandwich Panels. Journal of
Thin-Walled Structures, 35, pp:205-231. Elsevier • Kamsiah Mohd Ismail, Mohamad Shazli Fathi, Norpadzlihatun Manaf (2003), Study of Lightweight Concrete Behaviour. Research report, pp.
3-28 • Mahfuz, H., Muhammad, S.I., Vijaya, K.R, Mrinal, C.S. and Shaik J. (2004) Response of Sandwich Composites with Nanophased Cores under
Flexural Loading. Composites :
We leadREFERENCES
• Neville, A.M. (2003). Properties of Concrete. 4th Edition, Essex, England. Pearson Education Limited. • N. Mohamad and N. Hassan. (2003). “The structural performance of precast lightweight foam concrete sandwich panel with single and
double shear truss connectors subjected to axial load,” Journal of Advanced Materials Research, vol. 634-638, pp:2746-2751. • Noridah Binti Mohamad. (2010) : The Structural Behaviour of Precast Lightweight Foamed Concrete Sandwich Panel As a Load Bearing
Wall. PhD Thesis. Universiti Teknologi Malaysia • PCI Committee (1997). Pre-Cast Concrete Sandwich Wall Panels, State of the Art of Precasr/Prestressed Sandwich Wall Panels. PCI 97 PCI
Journal. 42(2): 92-133. • Rosmawati Binti Othman. (2009). The Properties of No Fines Concrete Using Crushed Clay Bricks. Universiti Teknologi Malaysia, Degree Final
Year Project. • Salihuddin Radin Sumadi, Mahyuddin Ramli. (2008). Developemnt of Lightweight Ferrocement Sandwich Panels For Modular Housing and
Industrialized Building System. 73311 • Wan Abdullah Wan Alwi. (2009) : Strength and Durability of Lightweight Foam Concrete as Structural Material. PhD Thesis. Universiti Sains
Malaysia, pp. 5-354
• Van Deijk, S. Foamed Concrete. A Dutch View, 1992, pp. 2-8
Thank you
Presented byPresented byNur Amira Binti Amirudin| School of Housing, Building and PlanningNur Amira Binti Amirudin| School of Housing, Building and Planning