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DISCUSSION OF MAKING USE J.M.F. CONSTRUCTED BY LABORATORY IN EXECUTION OF PROJECT (SURFACE COARSE, BC, SDBC)
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DISCUSSION OF MAKING USE J.M.F. CONSTRUCTED BY LABORATORY IN EXECUTION OF PROJECT (SURFACE COARSE, BC, SDBC)
BRAHMAPUTRA CONSULTANTS AND TECHNOCRATS
SEUJ BAN PATH, FATASIL AMBARI, GUWAHATI-781 025
(Regd. No.:RF/KM/143/514 of 1997-98)
94353-03112, 98645-07347 (M)
JOB MIX FORMULA (ABSRACT SHEET NO I)
Sub:- 4 lanning existing NH 37 from km 134.00 to 140.00 (T= 6th Km) including construction of Fly Over at LGBI Airport
Junction under Guwahati NH Division in the State of Assam, Job No. 037-AS-2008-09-061, Package No. PWD-
NH(R)/GHY/08-09/03.
NAME OF JOB & THICKNESS: Job No. 037-AS-2008-09-06140 mm thick BC.
2. SOURCE & TYPE OF AGGR: Broken chips, site collected by client.
3. SAMPLE USED & PROPORTION: S.No.-3-20%, S.No.-4-20%, S.No.-5-30%,
S. No. 6-27%, Cement-2%.
4.TYPE OF BINDER: PMB-70
5. P.C. BINDER BY WT. OF MIX: 5.50
6. BULK (DESIGN) DENSITY OF MIX GM/CC: 2.40
COMPUTATION OF MATERIALS FOR 10M2 AREA OF 40 MM COMPACTED THICKNESS BC
Note : Manufacturing, Spreading & Rolling temperature will be according to table 500 5 of
Specification for Road Bridge work.
All tests have been conducted as per relevant IS codes.
Sample No.P.C. of Each Sample on dry aggregateP.C. of Each Sample on total mixMaterial By WT (Kg)Materials By Volume M3RemarksSample No.320%18.90%181.4400.117Most4th Revision Sample No.420%18.90%181.4400.116Sample No.530%28.35%272.1600.75Sample No.627%25.50%244.9440.141Cement3%3%27.21627.216 kgPMB-70 Grade Bitumen5.82%5.50%52.79952.799 kgBRAHMAPUTRA CONSULTANTS AND TECHNOCRATS
SEUJ BAN PATH, FATASIL AMBARI, GUWAHATI-781 025
(Regd. No.:RF/KM/143/514 of 1997-98)
94353-03112, 98645-07347 (M)
MIX-DESIGN OF B.C.
DESIGN OF DENSE GRADED BITUMINOUS CONCRETE
INTRODUCTION :-
The Sampling has been done by the client and they have been marked in laboratory thus
a.Sample no 1 40 mm nominal size broken chips.
b)Sample no 2 26.5 mm nominal size broken chips.
c)Sample no 3 19.00 mm nominal size broken chips.
d)Sample no 4 13.2 mm nominal size broken chips.
e)Sample no 5 6.7 mm nominal size broken chips.
f)Sample no 6 Crusher Dust
g)Sample No- 7 OPC 43, Grade Cement
h)Binder i) 60/70 Grade Bitumen for D.B.M.
CRMB 55 for SDBC
PMB 70 - for BC
Sample are subjected to various tests in order to judge its suitability or otherwise against the requirement given in the Table no. 500 3 and 500 14 of Specification for Road and Bridge work Fourth Revision.
It has been intimated by the client that samples are obtained from dump kept at site in size for utilization on roads as such design has to be worked out within frame works of this keeping this aspect in view, all samples are sieved out and ascertained that requirement of 40 mm thick BC would be met by the sample no 3, sample no 4, sample no 5, & sample no 6 and Cement as filler with PMB-70 Grade Bitumen.
ALL PHYSICAL PROPERTIES OF AGGREGATES AND BITUMEN ARE AS FOLLOWS:-
Grain size analysis : Coarse aggr. Do not contain materials passing more then 5% in 0.075
mm IS sieve
Individual grading of the aggregate :
Following tests conducted on resultant materials of aggregate
P.C. by weight of Dry Aggr. Passing in I.S. SiveI.S. Sieve (mm)37.526.519.013.29.54.752.361.18.600.300.150.075Sample No.190292---------Sample No.21001004482-------Sample No.31001001003452------Sample No.41001001001009025864---Sample No.51001001001001006035184---Sample No.6 (Dust)1001001001001001001009986643418Sample No.7100100100100100100100100100908575NAME OF TESTSB.C.1. Aggregate Impact value in P.C.24.412. Combined Flakiness & Elongation Index P.C.23.603. Water absorption in P.C.0.5604. Stripping value in P.C.NIL i.e. 100% CoatingSpecific gravity and Bulk Density of each sample :-
Physical properties of Paving Grade Bitumen, PMB and CRMB:-
The results obtained satisfy the requirement of S 65 (60/70) Grade Bitumen as per I.S. code.
Sample No.Specific GravityBulk Density, Kg/m3Sample 12.7611580Sample 22.7601565Sample 32.7501545Sample 42.7501555Sample 52.7451550Sample 6 (Dust)2.7001725Sample 7 (Cement)3.12-Sl.NoName of TestPaving BitumenPMB -70CRMB1.Penetration value 100gm, 5 Sec, 250c, 1/100cm6757422.Ductility tests at 270 c in cmMore than 100>100303.Softening point in 0C4752574.Elastic recovery of PMB at 150c-5260PROPORTIONING OF MIXTURE FOR 40 MM BITUMINOUSCNCRETE
Aggregate are proportion in such a manner so that a maximum feasible uniform mixture complying with the requirement of table 500-3 of MOSTS specification of Fourth Revision to be obtained by the materials available at site taking five numbers/ of samples from SL.No. 3, SL. No.4, SL. No. 5, SL. No. 6 (Dust) with cement as Filler.
INDIVIDUAL GRADING AS WELL AS COMPOSITION OF AGGREGATES AS SHOWN BELOW :
I.S. Sieve mmP.C. by wt. of dry aggregate passing in sieveProportional P.C. of different samplesCombined Grading Specification S. No. 3S. No 4S. No 5S. No 6CementS. No. 3S. No 4S. No5S. No 6Cement20%20%30%27%3%19.010010010010010020203027310010013.2341001001001006.820302738779-1009.55901001001001.018.0302737970-884.75225601001000.45.018.02735353-712.36-835100100-1.610.52734242-581.18-61899100-1.23.626.7333434-48.600-4486100-0.81.223.2232826-38.300---6490---17.282.72018-28.150---3485---9.182.551212-20.075---1875---4.862.2574-10MAXIMUM THEORETICAL SPECIFIC GRAVITY AND MEASURED BULK DENSITY OF COMPACTED MIX, ALONG WITH OTHER DATA AT DIFFERENT P.C. OF BINDER FOR B.C
OPTIMUM BINDER CONTENT IS DETERMINED FROM THE AVERAGE OF THE FOLLOWING DATA, TAKEN FROM GRAPH
Binder content at maximum stability = 5.82Binder contact at maximum unit wt. of mix.= 5.84Binder content at Minimum air voids = 5.80Optimum binder content on dry aggr.= 5.82(V)Optimum binder content on total mix= 5.50
(VI) Maximum bulk density (gm/cc)= 2.40
Following Test Results are obtained from optimum binder content and verified with Road & Bridge works
specification (Fourth Revision) :
P.C. BINDER ON DRY AGGRP.C. BINDER ON TOTAL MIXSPECIFIC GRAVITY OF MIXBULK DENSITY (GM / CC) Stability in KgFlow in MMVIMVMAVFB5.2725.0002.5252.3809912.505.74217.64267.4525.8185.4982.5052.39311583.204.47117.62774.6356.4546.0632.4832.40012673.553.34217.80381.3227.0006.5422.4642.39111193.552.96218.60384.0777.5457.0162.4462.38110063.452.65719.36286.277TestResults ObtainedAs per Specification Stability in Kg. 1267>1200Flow in mm3.553.0-4.5VIM%4.1913-5VMA%17.391Min 15VFB%75.00065-75JOB MIX FORMULA FOR 40 MM THICK B.C.
Qnty per 10 m2=10 x .040m3=0.40m3
Weight=960.000 kg=0.960 MT
COMPUTATION OF MATERIALS FOR 10M2 AREA OF 40 MM COMPACTED THICK B.C.
Note-1. Aggregates proportion for DBM & BC against W.M.M. would be worked out after ascertaining the type of plants (Batch type plant or continuous drum type plant) and each capacity. This is essential requirement prior to operation.
NOTE:-(a) All tables mentioned in the report relate to specification for Road & Bridge Works, and also contract.
(b) All tests have been conducted according to relevant codes.
(c) manufacturing and rolling temperature would be according to table 500 5 of specification for Road &
Bridge works (Fourth Revision)
(d) Resultant mixture of dry obtained after proportioning in the lab., Have been subjected to sieve analysis it is
found designated sieves only to that of design one.
Sample No.P.C. of Each Sample on dry aggregateP.C. of Each Sample on total mixMaterial By WT (Kg)Materials By Volume M3RemarksSample No.320%18.90%181.4400.117Most4th Revision Sample No.420%18.90%181.4400.116Sample No.530%28.35%272.1600.75Sample No.627%25.50%244.9440.141Cement3%3%27.21627.216 kgPMB-70 Grade Bitumen5.82%5.50%52.79952.799 kgBRAHMAPUTRA CONSULTANTS AND TECHNOCRATS
SEUJ BAN PATH, FATASIL AMBARI, GUWAHATI-781 025
(Regd. No.:RF/KM/143/514 of 1997-98)
94353-03112, 98645-07347 (M)
JOB MIX FORMULA (ABSRACT SHEET NO 1)
SEMI-DENSE BITUMINOUS CONCRETE
Sub:- 4 lanning existing NH 37 from km 134.00 to 140.00 (T= 6th Km) including construction of Fly Over at LGBI Airport Junction under Guwahati NH Division in the State of Assam, Job No. 037-AS-2008-09-061,
Package No. PWD-NH(R)/GHY/08-09/03.
1. NAME OF JOB & THICKNESS: 25 mm thick S.D.B.C.
2. JOB NO & LOCATION : Job No. 037-AS-2008-09-061
3. SOURCE & TYPE OF AGGR : Broken Chips, site collection by Client.
4. SAMPLE USED & PROPORTION : S. NO.1-58%, S.NO.2-20%
S.NO. 3-20%, S.No.4-2% (Cement).
5. TYPE OF BINDER: CRMB-55 Grade
6. P.C. BINDER BY WT. OF MIX : 5.30
7. BULK (DESIGN) DENSITY OF MIX GM/CC: 2.384
COMPUTATION OF MATERIALS FOR 10 M2 AREA OF 25 MM COMPACTED THICKNESS (S.D.B.C.)
Note: Manufacturing, Spreading & Rolling temperature will be according to table 500-5 of
Specification for Road Bridge work.
All tests have been conducted as per relevant IS Codes.
Sample No. P.C. of Each Sample on dry Aggr.P.C. of Each Sample on Total MixMaterials By WT (Kg)Materials By Volume M3 Remarks Sample No.158%44.93%327.3480.210 Most 4th Revision Sample No.2 20%18.94%112.8780.072Sample No.3 20%18.94%112.8780.065Sample No. 4(Cement)22%11.28711.287CRMB-555.605.30%31.60631.606BRAHMAPUTRA CONSULTANTS AND TECHNOCRATS
SEUJ BAN PATH, FATASIL AMBARI, GUWAHATI-781 025
(Regd. No.:RF/KM/143/514 of 1997-98)
94353-03112, 98645-07347 (M)
MIX-DESIGN OF S.D.B.C.
DESIGN SEMI DENSE BITUMINOUS CONCRETE
INTRODUCTION :
The Sampling has been done by the client and they have been marked in laboratory thus
a)Sample No 1 13.2 mm down broken chips.
b)Sample No 2 6.7 mm nominal broken chips.
c)Sample No 3 Crusher Dust.
d)Sample No.- 4 - OPC 43 Grade Cement
e) Binderi) CRMB-55.
Samples are subjected to various in order to judge its suitability or otherwise against the requirement given in the Table No. 500-3 and 500-14 of Specification of Road and Bridge work Fourth Revision.
It has been intimated by the client that samples are obtained from dump kept at site in size for utilization on roads as such design has to be worked out within frame works of this keeping this aspect in view, all samples are sieved out and ascertained that requirement of 25 mm thick SDBC would be met by the sample No. 1, Sample No. 2, Sample No. 3 & Sample No. 4 (Cement as filler) with CRMB-55 Grade Bitumen.
ALL PHYSICAL PROPERTIES OF AGGREGATE AND BITUMEN ARE AS FOLLOWS:-
GRAIN SIZE ANALYSIS: Coarse aggr. do not contain materials passing more then 5% in
0.075 mm IS sieve.
INDIVIDUAL GRADING OF THE AGGREGATE:
FOLLOWING TESTS CONDUCTED ON RESULTANT MATERIALS OF AGGREGATE
I.S. Sieve (mm) 13.2 9.54.752.361.18.300.075Sample 1100902586--Sample 21001006035184-Sample 3100100100100996418Sample 41001001001001009075 NAME OF TESTS S.D.B.C. 1. Aggregate Impact value in P.C. 25.002. Combined Flakiness & ElongationIndex P.C. 22.503. Water absorption in P.C. 0.6254. Stripping value in P.C.NIL i.e. 100% CoatingSpecific gravity and Bulk Density of each sample :-
Physical properties of Paving Grade Bitumen, PMB and CRMB:-
The results obtained satisfy the requirement the Grade of Bitumen is PMB 70 as per I.S. code.
Sample No.Specific GravityBulk Density, Kg/m3Sample 12.7501555Sample 22.7451550Sample 32.7001725Sample 42.312-Sl.NoName of TestCRMB1.Penetration value 100gm, 5 Sec, 250c, 1/100cm422.Ductility tests at 270 c in cm303.Softening point in 0C574.Elastic recovery of PMB at 150c60PROPORTIONING OF MIXTURE OF MIXTURE FOR 25 MM SEMI-DENSE BITUMINOUS CONCRETE
Aggregate are proportion in such a manner so that a maximum feasible uniform mixture complying with the requirement of table 500-3 of MOSTS specification of Fourth Revision to obtained by the materials available at site taking three Numbers/ of sample as Sample No.1, Sample No.2 Sample No.3 & Sample No.4 (Cement)
INDIVIDUAL GRADING AS WELL AS COMPOSITION OF AGGREGATE AS SHOWN BELOW:
I.S. Sieve mmP.C. by wt. of dry aggregate passing in sieveProportional P.C. of different samplesCombined Grading Specification Sample 1Sample 2Sample 3Sample4(Cement)Sample 1 Sample 2Sample 3Sample4 (Cement) 58%20%20%213.210010010010058202021001009.59010010010052.2202029490-1004.75256010010014.5122024935-512.368351001004.657.02023424-391.18618991003.483.619.822915-30.300--6490--12.81.80159-190.075--1875--3.61.5033-8MAXIMUM THEORETICAL SPECIFIC GRAVITY AND MEASURED BULK DENSITY OF COMPACTED MIX, ALONG WITH OTHER DATA AT DIFFERENT P.C. OF BINDER FOR S.D.B.C
OPTIMUM BINDER CONTENT IS DETERMINED FROM THE AVERAGE OF THE FOLLOWING DATA.
Binder content at maximum stability = 5.40Binder contact at maximum unit wt. of mix.= 5.20Binder content at Minimum air voids = 5.20Optimum binder content on dry aggr.= 5.60(V) Optimum binder content on total mix= 5.30
(VI) Maximum bulk density (gm/cc)= 2.384
Following Test Results are obtained from optimum binder content and verified with Road & Bridge works specification (Fourth Revision) :
P.C. BINDER ON DRY AGGRP.C. BINDER ON TOTAL MIXSPECIFIC GRAVITY OF MIXBULK DENSITY (GM / CC) Stability in KgFlow in MMVIMVMAVFB4.7274.5132.5452.31610992.658.99719.44953.7405.2725.0082.5252.38312103.005.58617.52068.1165.8185.4982.5052.38412243.204.83017.93773.0726.4546.0632.4822.33110713.506.08320.21569.908TestResults ObtainedAs per Specification Stability in Kg. 1224Min 1200 KgFlow in mm3.202.5 4VIM%3.7543-6VMA%16.389Min 15VFB%77.09465-78JOB MIX FORMULA FOR 25 MM THICK S.D.B.C. FOR 10M2 AREA
Qnty per 10 m2=10 x .025m3=0.25m3
Weight=596 kg=0.596 MT
COMPUTATION OF MATERIALS FOR 10M2 AREA OF 25 MM COMPACTED THICK S.D.B.C.
NOTE:-(a) All tables mentioned in the report relate to specification for Road & Bridge Works,
and also contract.
(b) All tests have been conducted according to relevant codes.
(c) manufacturing and rolling temperature would be according to table 500 5 of
specification for Road & Bridge works (Fourth Revision)
(d) Resultant mixture of dry obtained after proportioning in the lab., Have been
subjected to sieve analysis it is found designated sieves only to that of design one.
Sample No. P.C. of Each Sample on dry Aggr.P.C. of Each Sample on Total MixMaterials By WT (Kg)Materials By Volume M3 Remarks Sample No.158%44.93%327.3480.210 Most 4th Revision Sample No.2 20%18.94%112.8780.072Sample No.3 20%18.94%112.8780.065Sample No. 4(Cement)22%11.28711.287CRMB-555.605.30%31.60631.606STABILITY CHART OF 40 MM BC ANNEXURE 1
WT. OF BINDER GM..PC BINDER ON DRY KGPC BINDER ONTOTAL MIXWT. OF SPECIMENIN AIR GM.WT. OF SPECIMEN IN WATER, GM.VOLUME OF SPECIMEN CCBULK DENSITY gm/ccWT.SPECIMEN NITH WAX COATID IN AIR GM SPECIFIC GRAVITY OF MIXSTABILITY IN KGFLOW IN MMVIMVMAVFBDIAL GAUGE READINGIN KGCORRECTED FACTORCORRECTED STABILITYDIAL GAUGE READINGIN M.M.2345678910111213141516171819585.2725.00011506654852.3712.5253409091.099912002.005.74217.64267.45211526704822.3903409091.149913003.0AVERAGE = 2.380AVERAGE = 991AV. 2.50645.8185.49811556734822.3962.50538010161.1411583003.04.47117.62774.36511556724832.39138010161.0911583403.4AVERAGE = 2.393AVERAGE = 1158AV. = 3.2716.4546.06311586744842.3922.48342011231.0912243603.63.34217.89381.32211606794812.41143011501.1413103503.5AVERAGE = 2.400AVERAGE = 1267AV. =3.55777.0006.54211586724862.3822.4643603631.0910493703.72.96218.60384.07711576754822.40039010431.1411893403.4AVERAGE = 2.391AVERAGE = 1119AV. =3.55837.5457.01611586704882.3722.4463308821.1410063903.92.65719.36286.27711606754852.3913308821.1410063203.20AVERAGE = 2.381AVERAGE = 1006AV. =4.05.2 5.8 6.4 7.0 7.5 5.2 5.8 6.4 7.0 7.5
Binder Content P.C
6
5
4
3
2
1
2.40
2.39
2.38
1250
1200
1150
Air Void P.C
Unit Wt., gm/cc
Stability, kg
P.C. Binder on Max Stability =5.82
P.C. Binder at 4% Void =5.80
P.C. Binder at Maximum unit Wt.= 5.84
Optimum Binder on Dry Aggr. =5.82
Optimum Binder on Total Mix = 5.50
BC
STABILITY CHART OF 25 MM SDBC ANNEXURE 1
WT. OF BINDER GM..PC BINDER ON DRY KGPC BINDER ONTOTAL MIXWT. OF SPECIMENIN AIR GM.WT. OF SPECIMEN IN WATER, GM.VOLUME OF SPECIMEN CCBULK DENSITY gm/ccWT.SPECIMEN NITH WAX COATID IN AIR GM SPECIFIC GRAVITY OF MIXSTABILITY IN KGFLOW IN MMVIMVMAVFBDIAL GAUGE READINGIN KGCORRECTED FACTORCORRECTED STABILITYDIAL GAUGE READINGIN M.M.2345678910111213141516171819524.7274.51311526564962.3222.54539010431.0410852502.58.99719.44953.74011516534982.31140010701.0411122802.8AVERAGE = 2.316AVERAGE = 1099AV.2.65585.2725.00811516664852.3832.52443011501.0912532.902.95.58617.52068.11611516684832.38340010701.0911663.103.1AVERAGE = 2.383AVERAGE = 1210AV. = 3.00645.8185.49811636754882.3832.50544011771.0912823103.14.83017.93773.07211556714842.38640010701.0911663303.3AVERAGE = 2.384AVERAGE = 1224AV. =3.2716.4546.06311656635022.3202.48238010161.0410573403.46.08320.21569.90811606664952.34339010431.0410853603.6AVERAGE = 2.331AVERAGE = 1071AV. =3.504.7 5.2 5.8 6.4 4.7 5.2 5.8 6.4
Binder Content P.C
6
5
4
3
2
1
2.38
2.37
2.36
1250
1200
1100
Air Void P.C
Unit Wt., gm/cc
Stability, kg
P.C. Binder on Max Stability =5.40
P.C. Binder at 4% Void =5.20
P.C. Binder at Maximum unit Wt.= 5.20
Optimum Binder on Dry Aggr. =5.60
Optimum Binder on Total Mix = 5.30
SDBC
