Please wait a minute...
 首页  期刊列表 期刊订阅 开放获取 关于我们
English
在线预览  |  当期目录  |  过刊浏览  |  热点文章  |  下载排行
Frontiers of Engineering Management    2019, Vol. 6 Issue (3) : 395-405     https://doi.org/10.1007/s42524-019-0019-2
RESEARCH ARTICLE
Effect of fly ash and slag on concrete: Properties and emission analyses
Vivian W. Y. TAM1(), Khoa N. LE2, Ana Catarina Jorge EVANGELISTA2, Anthony BUTERA2, Cuong N. N. TRAN2, Ashraf TEARA2
1. College of Civil Engineering, Shenzhen University, Shenzhen 518061, China
2. Western Sydney University, School of Computing, Engineering and Mathematics, Locked Bag 1797, Penrith, NSW 2751, Australia
全文: PDF(1418 KB)   HTML
导出: BibTeX | EndNote | Reference Manager | ProCite | RefWorks
Abstract

Recycled concrete is a material with the potential to create a sustainable construction industry. However, recycled concrete presents heterogeneous properties, thereby reducing its applications for some structural purposes and enhancing its application in pavements. This paper provides an insight into a solution in the deformation control for recycled concrete by adding supplementary cementitious materials fly ash and blast furnace slag. Results of this study indicated that the 50% fly ash replacement of Portland cement increased the rupture modulus of the recycled concrete. Conversely, a mixture with over 50% cement replacement by either fly ash or slag or a combination of both exhibited detrimental effect on the compressive strength, rupture modulus, and drying shrinkage. The combined analysis of environmental impacts and mechanical properties of recycled concrete demonstrated the possibility of optimizing the selection of recycled concrete because the best scenario in this study was obtained with the concrete mixture M8 (50% of fly ash+ 100% recycled coarse aggregate).

Keywords recycled aggregate      recycled concrete      fly ash and slag     
在线预览日期:    发布日期: 2019-09-04
服务
推荐给朋友
免费邮件订阅
RSS订阅
作者相关文章
Vivian W. Y. TAM
Khoa N. LE
Ana Catarina Jorge EVANGELISTA
Anthony BUTERA
Cuong N. N. TRAN
Ashraf TEARA
引用本文:   
Vivian W. Y. TAM,Khoa N. LE,Ana Catarina Jorge EVANGELISTA, et al. Effect of fly ash and slag on concrete: Properties and emission analyses[J]. Front. Eng, 2019, 6(3): 395-405.
网址:  
http://journal.hep.com.cn/fem/EN/10.1007/s42524-019-0019-2     OR     http://journal.hep.com.cn/fem/EN/Y2019/V6/I3/395
Parameter Percentage (%)
SiO2
CaO
Al2O3
Fe2O3
Na2O
MgO
KO2
Loss on ignition
45.0–64.4
0.7–7.5
19.6–30.1
3.8–23.9
0.3–2.8
0.7–1.7
0.7–2.9
0.4–7.2
Tab.1  Chemical analysis of fly ash (Kaur et al., 2012)
Source Australian Standards Natural aggregate Recycled aggregate
Grading AS 1141.11.1 Pass Pass
Water absorption (%) AS 1141.6.1 1.02 (10 mm),
0.42 (20 mm)
5.02 (10 mm),
5.63 (20 mm)
Particle density on oven-dried basis (t/m3) AS 1141.6.1 2.59 (10 mm),
2.47 (20 mm)
1.44 (10 mm),
1.30 (20 mm)
Particle density on saturated and surface-dried basis (t/m3) AS 1141.6.2 2.61 (10 mm),
2.48 (20 mm)
1.51 (10 mm),
1.37 (20 mm)
Apparent particle density (t/m3) AS 1141.4 2.66 (10 mm),
2.50 (20 mm)
1.55 (10 mm),
1.40 (20 mm)
Aggregate crushing value (%) AS 1141.22 21 34
Contaminant (%) AS 1289.4.1.1 0 2
Flakiness index AS 1141.15 28.27 (10 mm),
22.52 (20 mm)
15.12 (10 mm),
9.78 (20 mm)
Misshapen particle (%) AS 1141.14 3.02 0.88
Tab.2  Natural and recycled aggregate properties
Mixes M1 M2 M3 M4 M5 M6 M7 M8 M9
0-0-0 50-0-0 0-50-0 0-0-50 50-0-50 0-50-50 0-0-100 50-0-100 0-50-100
Fine sand
(kg)
604.7 604.7 604.7 604.7 604.7 604.7 604.7 604.7 604.7
Natural aggregate 10mm
(kg)
464.4 464.4 464.4 232.2 232.2 232.2 0 0 0
Natural aggregate 20mm
(kg)
928.8 928.8 928.8 464.4 464.4 464.4 0 0 0
Recycled aggregate 10mm
(kg)
0 0 0 232.2 232.2 232.2 464.4 464.4 464.4
Recycled aggregate 20mm
(kg)
0 0 0 464.4 464.4 464.4 928.8 928.8 928.8
Cement (type GP)
(kg)
630.1 315.0 315.0 630.1 315.0 315.0 630.1 315.0 315.0
Fly ash
(kg)
0 315.0 0 0 315.0 0 0 315.0 0
Slag (GBFS) 0 0 315.0 0 0 315.0 0 0 315.0
Water
(liter)
1400 1400 1400 1400 1400 1400 1400 1400 1400
Water/binder 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.45
Compressive strength
(MPa)
31.9 25.7 31.9 34.8 29.8 27.3 40.8 36.8 33
GHG emissions
(kg CO2-e/m3)
622.2 230.8 249.1 620.4 228.9 247.3 618.5 227.1 245.4
EGHG
kg/kg
0.15 0.06 0.07 0.15 0.06 0.07 0.15 0.06 0.07
Tab.3  Concrete mixes proportions for 1 m3 (kg)
Mixes Fly ash replacement (%) Slag replacement (%) Recycled aggregate replacement (%)
M1 (0-0-0) 0 0 0
M2 (50-0-0) 50 0 0
M3 (0-50-00 0 50 0
M4 (0-0-50) 0 0 50
M5 (50-0-50) 50 0 50
M6 (0-50-50) 0 50 50
M7 (0-0-100) 0 0 100
M8 (50-0-1000 50 0 100
M9 (0-50-100) 0 50 100
Tab.4  Experimental design on different fly ash, slag, and recycled aggregate replacement percentages
Fig.1  Drying shrinkage test for (a) M1, (b) M2, (c) M3, (d) M4, (e) M5, (f) M6, (g) M7, (h) M8 and (i) M9
Mixes Reversible Irreversible
M1 (0-0-0) 55.0% 45.0%
M2 (50-0-0) 64.5% 35.5%
M3 (0-50-0) 57.6% 42.4%
M4 (0-0-50) 22.0% 78.0%%
M5 (50-0-50) 42.2% 57.8%
M6 (0-50-50) 53.5% 46.5%
M7 (0-0-100) 52.2% 47.8%
M8 (50-0-100) 23.5% 76.4%
M9 (0-50-100) 14.6% 85.4%
Tab.5  Shrinkage reversible and irreversible percentages
Mixes 7 days 14 days 28 days
(MPa)
M1 (0-0-0) 20.6
(2.19)
25.9
(2.90)
31.9
(1.92)
M2 (50-0-0) 16.2
(0.36)
21.5
(0.51)
25.7
(2.03)
M3 (0-50-0) 18.7
(1.29)
21.2
(1.50)
31.9
(0.21)
M4 (0-0-50) 25.0
(1.95)
27.3
(1.50)
34.8
(0.18)
M5 (50-0-50) 19.8
(0.08)
25.2
(1.65)
29.8
(0.27)
M6 (0-50-50) 17.6
(1.20)
20.6
(0.64)
27.3
(0.09)
M7 (0-0-100) 34.5
(1.90)
36.5
(0.63)
40.8
(0.29)
M8 (50-0-100) 25.8
(2.61)
29.6
(0.52)
36.8
(0.06)
M9 (0-50-100) 22.3
(1.82)
25.1
(1.00)
33.0
(0.15)
Tab.6  Summary of compressive strength test results (mean values) and standard deviations in parentheses
Mixes Modulus of rupture (MPa)
M1 (0-0-0) 4.14
M2 (50-0-0) 3.46
M3 (0-50-0) 3.02
M4 (0-0-50) 3.81
M5 (50-0-50) 3.86
M6 (0-50-50) 3.44
M7 (0-0-100) 4.10
M8 (50-0-100) 4.66
M9 (0-50-100) 3.21
Tab.7  Modulus of rupture at 28 days
Fig.2  Compressive strength versus recycled aggregate content
Fig.3  Compressive strength versus fly ash content
Fig.4  Compressive strength versus slag content
Fig.5  Influence of slag (50%), fly ash (50%), and recycled aggregate (50% and 100%) contents on compressive strength over time
Fig.6  Greenhouse gas emissions and compressive strength of concretes with the incorporation of fly ash, slag, and recycled aggregate
Fig.7  Greenhouse gas emissions versus compressive strength of concrete with the incorporation of fly ash, slag, and recycled aggregate
Fig.8  Classification of the concrete mixes according to the compressive strength (28 days)/greenhouse gas emissions ratio
1 Alcas (2017). AusLCI- The Australian Life Cycle Inventory Database initiative. AusLCI Project
2 AS 1012.13 (2014). Methods of testing concrete- determination of the drying shrinkage of concrete specimens. Australian Standards, Australian Government
3 AS 1012.17 (2014). Methods of testing concrete- determination of the static chord modulus of elasticity and Poisson's ratio of concrete specimens. Australian Standards, Australian Government
4 AS 1012.2 (2014). Methods of testing concrete- determination of concrete mixes in the laboratory. Australian Standards, Australian Government
5 AS 1012.9 (2014). Methods of testing concrete- determination of the compressive strength of concrete specimens. Australian Standards, Australian Government
6 M L Berndt (2009). Properties of sustainable concrete containing fly ash, slag and recycled concrete aggregate. Construction & Building Materials, 23(7): 2606–2613
https://doi.org/10.1016/j.conbuildmat.2009.02.011
7 Cement Australia (2016). Chemical component for material, Cement Australia, Queensland, Australia.
8 B Cetin, A H Aydilek, Y Guney (2012). Leaching of trace metals from high carbon fly ash stabilized highway base layers. Resources, Conservation and Recycling, 58: 8–17
https://doi.org/10.1016/j.resconrec.2011.10.004
9 C K Chau, T M Leung, W Y Ng (2015). A review on life cycle assessment, life cycle energy assessment and life cycle carbon emissions assessment on buildings. Applied Energy, 143: 395–413
https://doi.org/10.1016/j.apenergy.2015.01.023
10 EPA (2016). Life‐Cycle GHG Accounting Versus GHG Emission Inventories.
11 M Etxeberria, A R Mari, E Vazquez (2007). Recycled aggregate concrete as structural material. Materials and Structures, 40(5): 529–541
https://doi.org/10.1617/s11527-006-9161-5
12 M Gesoğlu, E Guneyisi (2011). Perneability proporties of self-compacting rubberized concrete. Construction & Building Materials, 25(8): 3319–3326
https://doi.org/10.1016/j.conbuildmat.2011.03.021
13 G L Golewski (2018). Green concrete composite incorporating fly ash with high strength and fracture toughness. Journal of Cleaner Production, 172: 218–226
https://doi.org/10.1016/j.jclepro.2017.10.065
14 T C Hansen (1992). Recycling of demolished concrete and masonry: Report of technical committee 37-DRC, demolition and reuse of concrete. The International Union of Testing and Research Laboratories for Materials and Structures, London, E&FN Spon
15 T Hemalatha, A Ramaswamy (2017). A review on fly ash characteristics – Towards promoting high volume utilization in developing sustainable concrete. Journal of Cleaner Production, 147: 546–559
https://doi.org/10.1016/j.jclepro.2017.01.114
16 G Kaur, R Siddique, A Rajor (2012). Properties of concrete containing fungal treated waste foundry sand. Construction & Building Materials, 29: 82–87
https://doi.org/10.1016/j.conbuildmat.2011.08.091
17 D Kong, T Lei, J Zheng, C Ma, J Jiang (2010). Effect and mechanism of surface-costing pozzzalanics materials around aggregate on properties and ITZ microstructure of recycled aggregate concrete. Construction Technology, 24: 701–708
18 S Kou, C S Poon, D Chan (2008). Influence of fly ash as a cement addition on the hardened properties of recycled aggregate concrete. Materials and Structures, 41(7): 1191–1201
https://doi.org/10.1617/s11527-007-9317-y
19 S Kou, B Zhan, C S Poon (2012). Feasibility study of using recycled fresh concrete waste as coarse aggregates in concrete. Construction & Building Materials, 28(1): 549–556
https://doi.org/10.1016/j.conbuildmat.2011.08.027
20 S C Kou, C S Poon, F Agrela (2011). Comparisons of natural recycled aggregate concretes prepared with the addition of different mineral admixtures. Cement and Concrete Composites, 33(8): 788–795
https://doi.org/10.1016/j.cemconcomp.2011.05.009
21 S C Kou, B J Zhan, C S Poon (2014). Use of a CO2 curing step to improve the properties of concrete prepared with recycled aggregates. Cement and Concrete Composites, 45: 22–28
https://doi.org/10.1016/j.cemconcomp.2013.09.008
22 R Kumanayake, H Luo (2018). Life cycle carbon emission assessment of a multi-purpose university building: A case study of Sri Lanka. Frontiers of Engineering Management, 5(3): 381–393
https://doi.org/10.15302/J-FEM-2018055
23 R Kurad, J Silvestre, J Brito, H Ahmed (2017). Effect of incorporation of high volume of recycled concrete aggregates and fly ash on the strength and global warming potential of concrete. Journal of Cleaner Production, 166: 485–502
https://doi.org/10.1016/j.jclepro.2017.07.236
24 K N Le, V W Y Tam, N T Cuong, W Jiayuan, G Blake (2018). Life-cycle greenhouse gas emission analyses for green star’s concrete credits in Australia. IEEE Transactions on Engineering Management: 1–13
https://doi.org/10.1109/TEM.2018.2832094
25 S M Levy, P Helene (2004). Durability of recycled aggregate concrete: A safe way to sustainable development. Cement and Concrete Research, 34(11): 1975–1980
https://doi.org/10.1016/j.cemconres.2004.02.009
26 M Mater, M E Georgy, E Ibrahim (2004). Towards a more applicable set of sustainable construction practices. In: International Conference of Future Vision and Challenges for Urban Development, CE16: 1–12
27 P Mehta, P J M Monteiro (2005). Concrete Microstructure, Properties and Materials. New York: McGraw-Hill
28 F T Olorunsogo, N Padayachee (2002). Performance of recycled aggregate concrete monitored by durability indexes. Cement and Concrete Research, 32(2): 179–185
https://doi.org/10.1016/S0008-8846(01)00653-6
29 A K Padmini, K Ramamurthy, M S Mathews (2008). Influence of parent concrete on the properties of recycled aggregate concrete. Construction & Building Materials, 23(2): 829–838
https://doi.org/10.1016/j.conbuildmat.2008.03.006
30 C S Poon, D Chan (2007). The use of recycled aggregate in concrete in Hong Kong. Resources, Conservation and Recycling, 50(3): 293–305
https://doi.org/10.1016/j.resconrec.2006.06.005
31 J Qiu, D Qin, S Tng, E H Yang (2014). Surface treatment of recycled concrete aggregates through microbial carbonate precipitation. Construction & Building Materials, 57: 144–150
https://doi.org/10.1016/j.conbuildmat.2014.01.085
32 RMCG (2010) Consultants for Business, Community and Environment. Sustainable Aggregates – CO2 Emission Factor Study, Bendigo, Australia, 1–16
33 J S Ryu (2002). An experimental study on the effect of recycled aggregate on concrete properties. Magazine of Concrete Research, 54(1): 7–12
https://doi.org/10.1680/macr.2002.54.1.7
34 M Sandanayake, G Zhang, S Setunge, C Q Li, J Fang (2016). Models and method for estimation and comparison of direct emissions in building construction in Australia and a case study. Energy and Building, 126: 128–138
https://doi.org/10.1016/j.enbuild.2016.05.007
35 B Sharma, T Grant (2015). Life Cycle Inventory of Cement and Concrete produced in Australia. Life Cycle Strategies Pty Ltd, Melbourne, Australia, 1–48
36 J Sim, C Park (2011). Compressive strength and resistance to chloride ion penetration and carbonation of recycled aggregate concrete with varying amount of fly ash and fine recycled aggregate. Waste Management (New York, N.Y.), 31(11): 2352–2360
https://doi.org/10.1016/j.wasman.2011.06.014
37 V W Y Tam (2009). Comparing the implementation of concrete recycling in the Australian and Japanese construction industries. Journal of Cleaner Production, 17(7): 688–702
https://doi.org/10.1016/j.jclepro.2008.11.015
38 V W Y Tam, X F Gao, C M Tam (2005). Microstructural analysis of recycled aggregate concrete produced from two-stage mixing approach. Cement and Concrete Research, 35(6): 1195–1203
https://doi.org/10.1016/j.cemconres.2004.10.025
39 V W Y Tam, C M Tam, Y Wang (2007). Optimization on proportion for recycled aggregate in concrete using two-stage mixing approach. Construction & Building Materials, 21(10): 1928–1939
https://doi.org/10.1016/j.conbuildmat.2006.05.040
40 V W Y Tam, Z B Wang, Z Tao (2014). Behaviour of recycled aggregate concrete filled stainless steel stub columns. Materials and Structures, 47(1-2): 293–310
https://doi.org/10.1617/s11527-013-0061-1
41 Y Wang, Q H Zhu, Y Geng (2013). Trajectory and driving factors for GHG emissions in the Chinese cement industry. Journal of Cleaner Production, 53: 252–260
https://doi.org/10.1016/j.jclepro.2013.04.001
42 J Xiao, J Li, C Zhang (2005). Mechanical properties of recycled aggregate concrete under uniaxial loading. Cement and Concrete Research, 35(6): 1187–1194
https://doi.org/10.1016/j.cemconres.2004.09.020
43 J Yu, L Cong, C K Y Leung, G Y Li (2017). Mechanical properties of green structural concrete with ultrahigh-volume fly ash. Construction & Building Materials, 147: 510–518
https://doi.org/10.1016/j.conbuildmat.2017.04.188
44 J Zhang, C Shi, Y Li, X Pan, C S Poon, Z B Xie (2015). Influence of carboanted recycled concrete aggregate on properties of cement mortar. Construction & Building Materials, 98: 1–7
https://doi.org/10.1016/j.conbuildmat.2015.08.087
No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
版权所有 © 2015 高等教育出版社.
电话: 010-58556848 (技术); 010-58556485 (订阅) E-mail: subscribe@hep.com.cn