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FINAL YEAR PROJECT
The Use Of Lightweight Concrete Blocks In Multi-story Buildings.
By
Farhat Ullah
S M Tariq Shah
Group # 25
Supervisor:
Prof. Dr. Qaisar Ali
16/5/2014 Final Year Project(G#25) 1
CONTENTS
• Introduction• Problem statement • Objective• Methodology • Experimental data• Results• New methodology • Gantt chart
2Final Year Project(G#25)16/5/2014
INTRODUCTION
• Lightweight concrete has unit weight< 120pcf
Final Year Project(G#25) 3
• Lightweight concrete can be produced by:1. Lightweight aggregates:
• Natural lightweight aggregates.• Artificial lightweight aggregates.
2. Admixtures:• Air entraining.• Admixtures that evolve gases.• Examples are chemrite Aer, lightcrete 02, aluminium powder.
• Construction chemicals suppliers in Pakistan are Sika, Imporient, Pagel and Apepak.
16/5/2014
PROBLEM STATEMENT
• Solid bricks are used in high rise buildings.
• Causing heavy dead load.
• Causing more base shear.
• Greater stresses are generated.
• More reinforcement and heavy sections are needed.
4Final Year Project(G#25)16/5/2014
OBJECTIVE
Reducing the weight of masonry unit.
•Which can be achieved by:
• Using hollow bricks.
• Using hollow blocks.
• Using hollow blocks in lightweight concrete.
• Using solid blocks in lightweight concrete.
5Final Year Project(G#25)16/5/2014
METHODOLOGY
• We will use chemrite aer and lightcrete 02.
• We will test the efficiency of these admixtures in concrete and sandcrete samples.• Standard Samples
• Concrete (2000psi)• Sandcrete (1:3)
• Chemrite Aer (0.03%-0.15% )• Concrete (0.15%)• Sandcrete (0.15%)
• Lightcrete -02 (0.5%-1%)• Concrete (1%)• Sandcrete (1%)
6Final Year Project(G#25)16/5/2014
EXPERIMENTAL DATA
Sampletypes
No. Of samples
Dosage%age
Unit Weight
pcf
Strengthpsi
Standard 6 nil 140 2770
Chemrite Aer
6 0.15 140 2540
Lightcrete -02
3 1 136 1050
Final Year Project(G#25) 7
Concrete Samples
16/5/2014
EXPERIMENTAL DATA
Sampletypes
No. Of samples
Dosage%age
Unit Weight
pcf
Strengthpsi
Standard 3 nil 112 2773
Chemrite Aer
3 0.15 112 2250
Lightcrete -02
3 1 110 792
Final Year Project(G#25) 8
Sandcrete Samples
16/5/2014
Sampletypes
Unit Weight Reduced(%age )
Strength Reduced(%age )
Chemrite Aer
0 8.3
Lightcrete -02
2.86 62.1
Final Year Project(G#25) 9
Performance In Concrete
RESULTS
16/5/2014
Sampletypes
Unit Weight Reduced(%age )
Strength Reduced(%age )
Chemrite Aer
0 18.86
Lightcrete -02
1.78 71.44
Final Year Project(G#25) 10
Performance In Sandcrete
RESULTS
16/5/2014
NEW METHODOLOGY
• Contacting other suppliers like Sika, BASF and Pagel for
admixtures.
• Using aluminium powder.
Final Year Project(G#25) 1116/5/2014
NEW METHODOLOGY
• Using foaming agents from BASF:
Final Year Project(G#25) 1216/5/2014
NEW METHODOLOGY
• Using foaming agent:Rheocell 10 • Dosage: 2% - 10% by weight of
cement.• Efficiency: density can be
reduced up to 80 pcf.
Final Year Project(G#25) 1316/5/2014
NEW METHODOLOGY
Final Year Project(G#25) 14
• Using aluminium powder:• Dosage: 0.01% - 1% by
weight of cement.• Efficiency: density can be
reduced up to 80 pcf.
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• Using foaming agent:Sandcrete sample: 1:1
• Dose: 6%
Final Year Project(G#25) 1516/5/2014
EXPERIMENTAL DATA
Final Year Project(G#25) 16
EXPERIMENTAL DATA
16/5/2014
• Using aluminium powder:• Sandcrete sample: 1:1
• Dose: 0.05%
• Concrete sample: 1:2:2• Dose: 0.01%, 0.05% and 1%
• Using aluminium powder:
Final Year Project(G#25) 17
EXPERIMENTAL DATA
16/5/2014
• Using aluminium powder:
Final Year Project(G#25) 18
EXPERIMENTAL DATA
16/5/2014
• Using aluminium powder:
Final Year Project(G#25) 19
EXPERIMENTAL DATA
16/5/2014
• Using aluminium powder:
Final Year Project(G#25) 20
EXPERIMENTAL DATA
16/5/2014
• Using aluminium powder:
Final Year Project(G#25) 21
EXPERIMENTAL DATA
16/5/2014
• Using aluminium powder:
Final Year Project(G#25) 22
EXPERIMENTAL DATA
16/5/2014
GANTT CHART
Final Year Project(G#25) 2316/5/2014
Thanks
Final Year Project(G#25) 2416/5/2014
