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Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

Postal Subscription Code 80-968

2018 Impact Factor: 1.272

Front Struc Civil Eng    2013, Vol. 7 Issue (4) : 419-428    https://doi.org/10.1007/s11709-013-0224-8
RESEARCH ARTICLE
Recycled glass replacement as fine aggregate in self-compacting concrete
Yasser SHARIFI(), Mahmoud HOUSHIAR, Behnam AGHEBATI
Department of Civil Engineering, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
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Abstract

With increasing environmental pressure to reduce solid waste and to recycle as much as possible, the concrete industry has adopted a number of methods to achieve this goal by replacement of waste glass with concrete composition materials. Due to differences in mixture design, placement and consolidation techniques, the strength and durability of Self Compacting Concrete (SCC) may be different than those of conventional concrete. Therefore, replacement of waste glass with fine aggregate in SCC should deeply be investigated compared to conventional concretes. The aim of the present study is to investigate the effect of glass replacement with fine aggregate on the SCC properties. In present study, fine aggregate has been replaced with waste glass in six different weight ratios ranging from 0% to 50%. Fresh results indicate that the flow-ability characteristics have been increased as the waste glass incorporated to paste volume. Nevertheless, compressive, flexural and splitting strengths of concrete containing waste glass have been shown to decrease when the content of waste glass is increased. The strength reduction of concrete in different glass replacement ratios is not remarkable, thus it can be produced SCC with waste glass as fine aggregate in a standard manner.

Keywords Self Compacting Concrete (SCC)      recycle glass      fine aggregate      fresh and hardened properties     
Corresponding Author(s): SHARIFI Yasser,Email:yasser_sharifi@yahoo.com   
Issue Date: 05 December 2013
 Cite this article:   
Yasser SHARIFI,Mahmoud HOUSHIAR,Behnam AGHEBATI. Recycled glass replacement as fine aggregate in self-compacting concrete[J]. Front Struc Civil Eng, 2013, 7(4): 419-428.
 URL:  
https://academic.hep.com.cn/fsce/EN/10.1007/s11709-013-0224-8
https://academic.hep.com.cn/fsce/EN/Y2013/V7/I4/419
propertiesitemsvalue
chemical properties%silicon dioxide (SiO2)21.74
aluminum oxide (Al2O3)5.00
ferric oxide (Fe2O3)4.00
calcium oxide (CaO)63.04
magnesium oxide (MgO)2.00
sulfur trioxide (SO3)2.30
sodium oxide (Na2O)1.00
potassium oxide (K2O)
loss on ignition1.30
mechanical propertiesspecific density/(g·cm-3)3.15
specific surface area/(cm2·g-1)2900
setting time (final)/min170
setting time (initial)/min120
autoclave expansion/%0.1
compressive strength /(kg·cm-2)2203 days
2757 days
38028 days
Tab.1  Properties of cement
propertiesitemsvalue
physical propertiescolorlight gray
particle size (micron)35
bulk density (ton/m3)1.2
chemical properties /%silicon dioxide (SiO2)97.59
calcium oxide (CaO)0.26
magnesium oxide (MgO)0.13
aluminum oxide (Al2O3)0.37
sodium oxide (Na2O)0.1
P2O50.11
ferric oxide (Fe2O3)0.73
potassium oxide (K2O)0.06
loss on ignition0.6
Tab.2  Properties of silica fume
itemsfinecoarse
density/(gr·cm-3)2.772.73
unit weight (kg·m-3)18501750
water absorption/%1.10.8
Tab.3  Properties of aggregates
Fig.1  Crushed waste glass
propertiesitemsvalue
chemical properties /%silicon dioxide (SiO2)70.50
aluminum oxide (Al2O3)2.60
ferric oxide (Fe2O3)-
calcium oxide (CaO)5.70
magnesium oxide (MgO)2.90
sulfur trioxide (SO3)0.20
sodium oxide (Na2O)16.301.20
potassium oxide (K2O)
loss on ignition-
mechanical propertiesavg. bending strength short-term/(kg·cm-2)500
avg. bending strength long-term/(kg·cm-2)100
density/(gr·cm-3)2.5
Tab.4  Properties of glass
sieve/mmpercentage of passing/%
2.3679.50
1.1871.00
0.6077.00
0.3082.00
Tab.5  Gradation of recycled glass
itemsvalue
colorlight brown
typepolymeric compounds
the amount of chloride0%
density (kg/lit)1.05±0.02
PH5±1
slag0%
Tab.6  Properties of super plasticizer
Mix No.designationW/Ccement/(kg·m-3)silica fume/(kg·m-3)fine aggregate (FA)/(kg·m-3)course aggregate/(kg·m-3)super plasticizera)
sandglass
Mix 1100% FA0.5203605850-6902.5
Mix 290%FA+ 10%glass0.5203605765856902.5
Mix 380%FA+ 20%glass0.52036056801706902.8
Mix 470%FA+ 30%glass0.52036055952556902.9
Mix 560%FA+ 40%glass0.52036055103406903
Mix 650%FA+ 50%glass0.52036054254256903.1
Tab.7  Mix proportions for concrete mixtures
Fig.2  Concrete specimens after casting and testing
Fig.3  Fresh Properties measurements. (a) Slump-flow test; (b) L-box test; (c) V-funnel test; (d) J-ring test
test methodunittypical range of values
minmax
slump flowmm650800
V-funnelsecond612
L-box (H2/H1)-0.81.0
J-ringmm010
Tab.8  Typical acceptance criteria for SCC []
Fig.4  Concrete specimens under flexural and split test
Mix No.slump flowL-box ratioV-funnelJ-ring
final diameter /mmH2/H1 ratiofinal time/sfinal diameter (spread)/mm
Mix 16950.9418.95580
Mix 27100.8411.50665
Mix 37200.8216.33605
Mix 47250.8115.31665
Mix 57350.8013.24612
Mix 66550.8212.58585
Tab.9  Fresh properties of concrete mixtures
Fig.5  Relationship between compressive strength and percentage of replacement for different cement content
Fig.6  Compressive strength versus glass replacement
Fig.7  Compressive strength of specimens in different age
Mix No.compressive strength/MPaflexural strength/MPasplitting strength/MPadensity/(kg·m-3)
3 days7 days14 days28 days
Mix 126.8839.6944.7148.514.053.102414.53
Mix 226.4639.0144.1447.094.083.442300.85
Mix 325.1938.0643.8646.923.873.372391.48
Mix 423.1537.2443.3945.643.692.992382.60
Mix 522.7336.0542.9645.043.642.932378.12
Mix 619.2035.8641.8844.523.442.922383.54
Tab.10  Hardened properties of concrete mixtures
Fig.8  Flexural strength versus glass replacement
Fig.9  Split strength versus glass replacement.
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