use of fly ash in road constructionupred.gov.in/site/writereaddata/uploadgovermentorder/pdf/c... ·...
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Use of Fly ash in Road
Construction
U.K.Guru VittalChief Scientist, CRRI, New Delhi – 110025
e mail: [email protected]
Mob: 98688 58380
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NRRDA Publication & O.M
http://pmgsy.nic.in/public.asp
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Thermal Power Plants in U.P
Plant District UtilityCapacity
(MW)
Fly ash
generation
(Million Tonnes/
Year)
Anpara Sonbhadra UPRVUNL 1630 3.2
Harduaganj Aligarh UPRVUNL 670 1.0
Obra Sonbhadra UPRVUNL 1194 1.3
Panki Kanpur UPRVUNL 210 0.3
Parichha Jhansi UPRVUNL 1140 2.0
Rihand Sonbhadra NTPC 3000 4.8
Singaruli Sonbhadra NTPC 2000 3.7
TandaAmbedkar
NagarNTPC 440 1.0
Guru Vittal
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Thermal Power Plants in U.P…Contd
Plant District UtilityCapacity
(MW)
Fly ash
generation
(Million Tonnes/
Year)
Dadri G.B.Nagar NTPC 1820 2.6
Unchahar Raebareli NTPC 1050 1.9
Barkhera Pilibhit BEPL (IPP) 90 0.2
Khambar
KheraLakhimpur BEPL (IPP) 90 0.2
Kundarki Gonda BEPL (IPP) 90 0.2
Maqsoodpur Shahjahanpur BEPL (IPP) 90 0.2
Utraula Balrampur BEPL (IPP) 90 0.2
Rosa Phase I Shahjahanpur RPSCL (IPP) 1200 1.3
Guru Vittal
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Guru Vittal
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Fly ash Usage for
Embankment
Construction
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Fly ash Embankment
Case Studies
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Fly ash for Road
Pavement Construction
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Guru Vittal
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315 mm x 150 mm x 150 mm FalG blocks for paving (Fly ash + Lime or cement + Gypsum + Sand or Stone dust)
Bricks are prepared earlier, So faster rate of laying
Environmentally better choice, no burning during
brick making, better strength of bricks (20 MPa)
Khadanza keeps gaining strength after wetting
Khadanza Cost (Wearing course) about Rs.28 lakh
per km (sub-base and subgrade preparation cost extra)
Construction is similar to paver blocks, mortar can
be laid between joints to prevent pilferage
Khadanza (Fly ash Brick Paving)
Fore details: Dr. N Kalidas, INSWAREB, Visakhapatnam (Mob: 9848191453, email: [email protected]
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KhadanzaRef: https://www.youtube.com/watch?v=A0v9W1CecvQ
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Combining Pond ash & Soil Based on Grain Size
Numerical
Difference
between
Material A
and
Average
Material
A “Soil”
Per cent
Passing
Sieve
Size
(mm)
Sub-Base
Gradation
Limits
(MORD
Specs)
Average
Material
B
“Pond
Ash”
Per cent
Passing
Numerical
Difference
between
Material B
and
Average
0 100 37.5 100 100 100 0
10 100 19 80 – 100 90 100 10
32.5 100 9.5 55 – 80 67.5 100 32.5
50 100 4.75 40 – 60 50 100 50
76.5 99 0.425 15 – 30 22.5 69 46.5
73.5 81 0.075 0 – 15 7.5 9 1.5
242.5 140.5Pond ash:Soil = 242.5:140.5 (1.7:1)Pond ash = (242.5 x 100) / (242.5 + 140.5) = 63%
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Properties of Stabilised Raichur Pond ash
Mix Proportions (per cent) OMC (%) MDD(kN/m3) CBR (%)
100 % Pond ash 22.5 14.4 22
15% BC Soil + 85% Pond ash 29.6 12.8 40
25% BC Soil + 75% Pond ash 23.0 13.1 34
67% BC Soil + 33% Pond ash 18.0 16.3 4
100% BC Soil 27.0 14.1 2
15% BC Soil + 82% Pond ash +
3% Lime
30.0 12.7 105
33% Gravel + 67% Pond ash 16.2 17.1 45
Guru Vittal
Guru Vittal
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Case Studies
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Stabilised base course
Mixing & laying of RCCP
Demonstration Road Project Using Fly Ash
Near Dadri (U.P)
Mixing of RCCP
Gur
u V
ittal
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तीन प्रकार - फ्ऱाई ऐश, बॉटम एश, और ऩॉण्ड एश IRC SP 72 एवं MORD Specifications में संशोधन ककया है, अब फ्ऱाई ऐश के उऩयोग के लऱए ऩयााप्त ग जंाइश
सूखा फ्ऱाई ऐश (IS 3812 Part 1) प्रततकियाशीऱ है – कंिीट ऩेवमेंट में OPC के बदऱे (upto 30%) इस्तेमाऱ कररए
बॉटम एश और ऩॉण्ड एश – तटबंध (किऱ), GSB एवं Base course में गैर प्ऱास्स्टक सामग्री जसेै उऩयोग
फ्ऱाई ऐश को Stabilise कररए और सड़क तनमााण में इस्तेमाऱ कररए
ऩयाावरण की दृस्टट से स रक्षऺत, ऱागत की बचत एवं सरकारी तनदेशों के अन सार
सारांश
Guru Vittal: [email protected]
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Three types – Fly ash, Bottom ash and Pond ash IRC SP 72 & MORD Specifications have been revised,
Ample scope for fly ash usage in new specifications
Usage – Fill material, Stabilisation, Cement Concrete
Dry fly ash (IS 3812 Part 1) is reactive – Can replace part of cement in concrete pavement
Pond ash and bottom ash – Embankment fill, usage in GSB and Base course as a non plastic material
Stabilise fly ash and build road pavements
Usage is environmentally safe, economical and as per Government Directives
Fly Ash Usage in Road Works
Guru Vittal: [email protected]
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Thank [email protected]