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MINIMUM QUANTITIES REQUIRED TO BE SENT TO LABORATORIESFOR TESTING OF MATERIALS
SR .No. Name of Test Minimum Quantities of Material Required for testing
CEMENT
1. Fineness Test samples of cement shall be made up of a 15 Kg.
2. Specific Gravity Cement approximately taken from each of number of bags on the site
3. Standard Consistency
4. Setting Time (Initial & Final)
5. Compressive Strength
6. Soundness
COARSE AGGREGATE
Size of metalQuantity
7. Sieve Analysis 60 mm100 Kg
8. Water absorption & Specific Gravity
40 mm50 kg
a) Water Absorption 25 mm50 Kg
b) Specific Gravity 20 mm25 Kg
9. Impact Value 12.5 mm12 kg
10. Abrasion Value 10 mm6 Kg
11. Crushing Value 6.3 mm3 Kg
12. Flakiness Index
FINE AGGREGATE
13. Fineness Modulus (Sieve Analysis)
One bag of 25 Kg.
14. Silt & Clay Content (Weight Seiving)
BRICKS
15. Water Absorption Five Bricks
16. Compressive Strength Five Bricks
17. Efflorences Five Bricks
FLOORING TILES
18. Flexural Test Six Tiles
19. Water Absorption Six Tiles
20. Resistance to wear Six specimen of size 70 x 70 mm
MANGLORE TILES
21. Water Absorption Six Tiles
22. Flexural Test Six Tiles
23. Permeability Test Six Tiles
GLAZED TILES
24. Water Absorption Five Tiles
CONCRETE
25. Compressive Strength of C. C. Cube
Three Nos of C. C. Cubes Size 15 x15x 15 cm. Per Set
26. Concrete Mix Design with all tests on basic materials
One full bag of each Aggregate , Sand & Cement
27. Concrete mix design only for mix (tests on basic materials have already been taken
for Mix Design of each Grade
MORTOR
28.Compressive Strength
Three Nos of MorterCubes Size 7.07x 7.07x 7.07 CmsPer Set
STONE
29. Crushing Value 50 Kg.
30. Water Absorption & Specific Gravity
31. Compressive Strength (Dressing of Stone already Done)
Six dressed Samples of Size
10x 10x 10 Cms
32. Compressive Strength with dressing of stone in Laboratory
Six Samples from which six specimen of dressed stone of Size 10 x10 x10 Cms can be achieved
SOIL/ MURUM
33. Field moisture Content
34. Liquid limit & Plastic Limit
35. Compaction Test (Proctor Density)
One bag of 50 Kg.
36. C.B.R. Test (Lab.)
37. Field Density by sand replacement method
BITUMEN
38. Extraction Test Two Kg. Bituminus Mix
39. Marshall stability & flow measurements a)Moulds Testing
One Set of Three Standard MarshallMoulds of size
Diametre 10 cm ,Height 6.5 cm.
40. Preparation of Marshall moulds & Testing
4 Kg. Mix
41. Penetration Two Kg Bitumen
42. Asphaltic concrete Job Mix Design with all tests on basic materials for DBM/SDBC/AC
One full bag of each Aggregate , filler- 5 Kg.,Grit-10 Kg., Bitumen-5 Kg.
43. Bituminus Macadam Job Mix Design
for each Mix Design
HOLLOW BLOCKS
44. Density test Three Blocks
45. Compressive Strength Eight Blocks
46. Water Absorption Test Three Blocks
SOLID BLOCKS
47. Density Test Three Blocks
48. Compressive Strength Eight Blocks
49. Water Absorption Test Three Blocks
S.N. Name of Test Minimum Quantities of Materials
required for testing
COARSE AGGREGATE
1 Soundness 20 kg
2 Bulk Density 25 kg
FINE AGGREGATE
3 CL2 & Sulphate Content 2 kg
4 Moisture Content 2 kg
5 Bulkage of sand 5 kg
CONCRETE
6 Flexural Strength of beam One set of three beams
SOIL/ MURUM
7 Sulphate & Chloride content 2 kg
8 Mechanical analysis 60 kg (IS 2720 Pt.4)
BITUMEN
9 Softening point
5 kg Bitumen
10 Viscosity
11 Flash & fire point
12 Specific gravity
13 Ductility
14 Mastic Hardness No. 5 Moulds
WATER
15 PH value 1 Litre of Water
16 Sulphate & Chloride content
WOOD
17 Density3 Samples of
450 x 300 mm
18 Moisture content
STEEL ANTI CORROSIVE TEST
19 Resistance to applied voltage (1 Hr.test) Two bars of 90 cm. length of required
diameter20 Resistance to applied voltage (30 days.test)
21 Thickness of coating
22 Chemical resistance Test Eight bars of 30 cm. length of required
diameter
23 Hardness of coating Test Two bars of 30 cm. length of required
diameter
Control Tests & their frequency & specified limits for various construction materials:
Sr.No Material & Tests. Specified Limit. Frequency.
1.CEMENT (OPC)
1) Initial setting time.
Not less than 30 minutes.
2) Final setting time. Not more than 600 minutes.
3) Fineness by dry sieving.
Residue not more than 10% on 90micron sieve.
For each consignment of 50 M.T. or part thereof.
4) Specific gravity. 3.10 to 3.15
5) Compressive strength.(in Kg/cm2.)
33 Grade. 43 Grade 53 Grade
a) 3 days ( +/- 1 hours ) a) 160 230 270
b) 7 days. ( + /-2 hours. ) b) 220 330 370
6) Soundness by Lechatelier apparatus.
Expansion not more than 10 mm.
2)SAND
1) Particle size. 100% passing through 4.75 mm I.S. sieve.
2) Silt content. Not more than 4%
3) Fineness modulus.
1) For concrete 2.6 to 3.6
2)For masonry and 1st coat of plaster. Not more than 3.
3) For pointing & IInd coat of plaster shall Not exceed 1.6
Tests should be carried out in the beginning and if there is a change in source
4) Bulkage. Bulkage will have to be determined for
applying correction to the qty. of sand as and when necessary.
5) Moisture content. Will have to be determined to find
quantity of free water in sand.
Sr.No Material & Tests. Specified Limit. Frequency.
3. COARSE AGGREGATE
1) Gradation.
Size of metal. 100 % Passing
throughsieve size
100% Retained on sieve size
80 mm. 100mm
50 mm
60mm 80mm
50 mm
50mm 60mm
40 mmOne test for per 100
Cubic metre
40mm 63mm
63 mm ( 0%)
40mm 35 to 70%
40mm (30 to 65%)
12.5mm 0 to 5 % 12.5mm
(95 to 100%)
40mm to50mm. 63 mm 25 mm
For Bituminus Works
40mm Crushed Metal 50mm 25 mm
25mm Crushed Metal 40 mm 20 mm
20mm Crushed Metal
12.5 mm Crushed Metal
10mm Crushed Metal
6.3 mm Crushed Metal
25 mm
20 mm
12.5 mm
10 mm
12.5mm
10 mm
6.3 mm
4.75 mm
For concrete For Road work
(Heavy traffic)
2)Impact Value. Shall not exceed
45%Shall not exceed
30%
3. Crushing value shall not exceed.
45%shall not exceed.17 %
4) Los Angles abrasion value
shall not exceed
16%.shall not exceed. 50% (for WBM) shall not exceed. 17%(B.T.works)
At the beginning & if there is change in source.
5) Flakiness Index
Shall not exceed
35%shall not exceed.
15%
6) Water absorption shall not exceed 5% shall not exceed
5% for WBM shall not exceed 1% for BT work
7) Specific Gravity Not specified Not specified
Sr. No Tests. Specified Limit. Frequency.
4BRICKS
4. Water absorption shall not exceed
I class II class 20% 22%
· Compressive Strength (wet condition ) 32.8 kg/cm2 29.52 kg/cm2
minimumA set of 15 bricks for 50000 consignment or part there of.
3)Efflorescence
NIL - when there is no percephible deposit of efflorescence
Slight – when not more than 10% area is covered with deposit
Serious – when there is heavy deposit of salt accompanied by powdering
1) Compressive Strength for 28 days
Propotion 28 days Strength
1:3 127 to 211 Kg/cm2
1:4 84 to 126 Kg/cm2
1 :5 56 to 84 Kg/cm2
1:6 35 to 56 Kg/cm2
6 CEMENT CONCRETE CUBE
1) Compressive Strength
Grade 7days 28 days
(Min kg/cm2) (Min kg/cm2)
M100 70 100
M150 105 150
M200 135 200
M250 170 250
M300 200 300
M350 235 350
M400 270 400
Quantity Min. No
Of Concrete of Samples
Cum.
1 – 5 1
6 – 15 2
16 – 30 3
31 –50 4
50 & Above 4 plus
additional samples for each addition 0f 50 m3 or part
there of
1 Sample = 6 Cubes
MANGALORE TILES
1) Water absorption shall not exceed…
Class AA Class A
19% 24%
.2) Breaking Load kg (minimum)
3) Permeability Test
For Average For Average
100 (410 x 235) 80(410x235)
110(420x250) 90(420x250)
110(425x260) 90(425x260)
Individual Individual
90(410x235) 68(410x235)
100(420x250) 78(420x250)
100(425x260) 78(425x260)
The tile shall be considered as satisfying the test, if not water has coazed from the bottom at the tile after the test.
1 set of 18 tiles for every 2000 tiles or part thereof.
8CEMENT FLOORING TILES
5. Water absorption
6. Transverse strength
Shall not exceed 10%
Average wet shall not be less than
3 N /mm2 (30 kg/cm2)
6 tiles shall be tested or every test for every 2000
tiles or part there of.
9SOIL/MURUM
7. Proctor Density Shall not be less than
1.44 gm/cc Embankment upto 3 mtr. Height
1.5 to gm/cc for Embankment exceeding 3 mtr. Height
1.65 gm/cc for top 0.5 mtr. Height of
One test per 1000 m3 or soil.
8. C.B.R. Value Embankment
The Embankment shall be designed on ascertaining the CBR value
10HARD MURUM
9. Gradation
2) Plasticity Index
95% passing through 80 mm seive size 2% passing through 25 mm seive size Below 4
One test for compaction of 1 layer in one km. and every change in source or type of murum.
11SOFT MURUM
1) Plasticity Index
Below 8One test for compaction of 1 layer in one km. and every change in source or type of murum.
1
Sr. No Tests. Specified Limit. Frequency.
12STONE
10. Water Absorption
11. Compressive Strength
12. Specific Gravity
Maximum 5%
1530 kg/cm2 minimum
Not less than 3
13GLAZED TILES
1) Water Absorption
Not more than 10% One set of 5 tiles for every 5000 tiles or part thereof.
14BITUMEN
1) Penetration
To ascertaion the correct grade of bitumen
Two samples per lot to be subjected to all some tests as directed by the Engineer.
15BITUMINI0U MIX
13. Extruction
To check correct binder content as per the tender
2 test for each 100 tonnes of mix subject to a
2) Marshall Stability & Flow measurments
Minimum stability 820 kg
Flow 2-4 mm
minimum of two tests per day per plant.
For each 100 tonnes of mix produced , a set of 3 marshall moulds to be prepared and tested as per MOST
CONTROL TESTS AND THEIR FEQUENCY AND SPECIFIED LIMITS FOR VARIOUS CONSTRUCTION MATERIALS
S.N. Name of Test Specified Limit Frequency
COARSE AGGREGATE
1 Soundness Loss withSodium – 12% Max.Magnesium Sulphate 18% Max.
Before approving the aggregates and every month subsequently
2 Bulk Density - -
FINE AGGREGATE
3 CL2 & Sulphate Content Sulphate content – 500 mg/LtCl 2 content –2000 mg/Lt. – For P.C.C.1000 mg/Lt. – For R.C.C.
4 Moisture Content
5 Bulkage of sand
CONCRETE
Flexural Strength of beam Grade Modules of rupture
Of By beam test min.Concrete 3 days 7 daysN/mm2 N/mm2M-10 1.2 1.7M-15 1.5 2.1M-20 1.7 2.4M-25 1.9 2.7M-30 2.1 3.0M-35 2.3 3.2M-40 2.5 3.4
2 beams/150 m3 or part there of (one for 7 days and other for 28 days) or minimum 6 beams per day’s work whichever is more
SOIL/ MURUM
7 Sulphate & Chloride content Sulphate content – 500 mg/LtChloride content –2000 mg/Lt. for P.C.C.1000 mg/Lt. for R.C.C.
8 Mechanical analysis
BITUMEN
9 Softening point 40 to 550C 2 sample/lot to be subjected to all or
some tests as directed by the Engineers
10 Viscosity -
11 Flash & fire point 1750C
12 Specific gravity 0.99 minimum
13 Ductility 75 cm. Minimum
14 Mastic Hardness No. 60 to 80 at 250C without coarse aggregate
10 to 20 at 250C after adding coarse aggregate
-
WATER
15 PH value Not less than 6 Once for approval of source of supply
subsequently in case of doubt
16 Sulphate & Chloride content Sulphate content – 500 mg/LtChloride content –2000 mg/Lt. for P.C.C.1000 mg/Lt. for R.C.C.
WOOD
17 Density --
At least 3 samples from lots containing
upto 200 pieces18 Moisture content Roof and floors/weather
Boards 20%Joinery beams/staircase 16%
floors 12%
STEEL ANTI CORROSIVE
TEST
19 Resistance to applied voltage (1 Hr.test)
There was no sign of any coating failure at cathode, due to
evaluation of hydrogen gas of any lasting at anode
-
20Resistance to applied voltage
(30 days.test)No under cutting of coating shall
occur at any holiday that develops during testing. If no holiday developed during 30
days single intentional hole of 6 mm. shall be made in both
cathod in anode then test shall be continued for additional 24 hours in which no under cutting shall
occur
-
21 Thickness of coating Minimum thicknessCECRI – 200 – 400 Mic.FBEC – 100 – 300 Mic.CPCC – 125 Mic. Min.
Coating thickness shall be tested at a frequency of not less than one full length bar every twenty bars for each size.
22 Chemical resistance Test The coating shall not blister, soften, lose bond, nor development holiday during 45 days. The intentionally made holes shall exhibit no under cutting during the 45 days period.
-
23 Hardness of coating Test Hardness of coating when measured using a pencil hardness tester shall be around 54 to 74.
TYPICAL LETTER FOR SAMPLE DESPATCH
Date
To,
Sub.:- Testing of construction material
Please find enclosed herewith the samples collected from the below mentioned work site and it is requested to please test the materiasl and communicate the test results to this office at an early date.
1. Name of Work : ----------------------------------------------------------------------------- 2. Estimates cost of work :---------------------------------------------------------------------- 3. Tender No. & Cost :-------------------------------------------------------------------------- 4. Scheme of Work :------------------------------------------------------------------------------ 5. Name of Agency :-----------------------------------------------------------------------------
6. Details of sample as below.
A. Aggregate/ Murum/ Bituminious mix.
Sr.No. Material its location chainage LHS/RHS
No. of samples Tests to be conducted
1) 60 mm metal km 1/500 (RHS) 1 No. 1)Water Absorption2) Impact Value3) Gradation
B. C. Bricks/Tiles (Flooring/Manglore) /CC Blocks etc
Sr.No Material & its identification mark No. of sets Tests to be conducted
1 Bricks 1 set1 set=10 bricks
1)Water Absorption2) Compressive strength
D.
E. CC Cube/Moter Cube/ Hallow Block/Soil Block :-
Sr.No Grade of concrete / member
Date of Casting
Mark Size in cm
No. of sets Test
1 M-20Beam No.B-4
12-5-2000 B-1B-2B-3
15x15x15 2 sets1 set= 3 No. cube
Compressive Strength
G. Concrete Mix Design
1. Grade of Concrete ----------------------------------------------------- 2. Size of Aggregate to be used ------------------------------------- 3. Details of fine Aggregate -------------------------------------------
4. Cement company and Grade ------------------------------------- 5. Maximum size of Aggregate --------------------------------------- 6. Required character stic strength --------------------------------- 7. Degree of workability ------------------------------------------------- 8. Type of exposer -------------------------------------------------------- 9. Degree of quality control --------------------------------------------- 10. Water cement ratio ----------------------------------------------------- 11. Required slump --------------------------------------------------------- 12. Minimum cement content specified ------------------------------
E) Job Mix Design for Bituminus Work (SDBC/DBM/BC/BM)
1. Wearing surface type -------------------------------------------------- 2. Thickness as per tender ---------------------------------------------- 3. Details of material to be used --------------------------------------- 4. Details of filler ------------------------------------------------------------- 5. Details of binder ---------------------------------------------------------
Identification slip as described below duly signed with seal shall be kept in the sample bag.
Identification Slip
1) Name of Sub Dn. : ----------------------------------------------------------
2) Name of work ----------------------------------------------------------------
3) Date of sample ------------------------------------------------------------- dispacted to Laboratory
4) Details of sample ---------------------------------------------------------
Testing charges for the above tests will be paid by the agency in cash or Demand Draft. It is requested to send the results to the Executive Engineer ----------------Dn.
Encl: Samples as Deputy Engineer,
Mentioned above P.W/NH/ZP Sub Dn.
Copy submitted to the Executive Engineer, P.W. Dn. ---------------------- for information
Copy to Agency ---------------------------------------- for information & necessary action.
REGISTER OF QUALITY CONTROL TESTS
A. Guidelines for maintaining the Register of Quality Control Tests.1) On every work, this Register shall be maintained.
2) The Junior Engineer, in charge of the work, should maintain this Register under the guidance of his Deputy Engineer.3) The entries in the register should be signed by the Deputy Engineer for authentication.4) Register should be available on the site of work during the inspection and should be kept up-to-date.5) This register shall form a part of the permanent record of work and its pages should not be torn off and erasured, changed etc. should be authenticated.6) For special type of works involving large scale construction in Bituminous Macadam and Asphaltic concrete etc. a separate register may be kept for day-to-day tests.
A. Samples of Materials of Testing1) Samples should be adequately representative and should be takenafter receipt of each new consignment.2) The number of samples to be tested and the quality of each sample etc. as also the frequency of the testing shall be as per the Standard Specification.3) Samples should be properly identified by giving due identification marks and sent to the Laboratory carefully so that they do not get damaged in transit.
A. Standard Results
The prescribed standards and frequency are shown in separate chapter.
1) Cement. … ... …
2) Sand. … … …
3) Bricks. … … …
4) Stone. … … …
5) Aggregates. … … …
6) Concrete. … … …
7) Steel. … … …
8) Welded Joints/Electrodes. … …
9) Flooring Tiles. … … …
10) Mangalore Tiles. … … …
11) Cement Mortar. … … …
12) Soils … … …
13) Bitumen … … …
14) Hume pipes. … … …
PERFORMA FOR TESTING OF CEMENT
Sr.No.
Date of Sampling
Age of cement at the time of
testing
Date of Testing
Sample identification No. including Name of Factory, Lot Not.
No. etc.
FINENESS
% of Residue by weight on
90 micron sieve.
Specific surface by Air Permeability method cm2/gm.
1 2 3 4 5 6 7
Soundness Setting Time Compressive Strength Name of Lab. & No. & Date of letter No. under which
the results are received.
Dated Signature
of the Deputy Engr.
Remarks
Initial
(Minutes)Final
(Minutes)Age of cube
Compressive strength in Kg/cm 2
8 9 10 11 12 13 14 15
PROFORMA FOR TESTING OF SAND
Sr. No. Date Silt contents % Sieve Analysis
Sieve size in mm. % Retained by weight
1 2 3 4 5
Fineness Modulus
Condition of sand
Moisture content %
% Bulkage observed
Action taken for reduction in silt content /F.M.
Bulkage
Dated Signature of
D.E.
Remarks
6 7 8 9 10 11 12
PROFORMA FOR TESTING OF BRICKS
Sr. No. No. of Bricks in one consignment
No. of samples selected for
testing
Size of brick
Identification No. on sample
Date of testing
% of water absorption
1 2 3 4 5 6 7
Compressive strenth Kg/cm2
Efflorance Test. Reference No. from laboratory
Dated Signature of the Dy. Engineer
Remarks.
Dry. Wet.
8 9 10 11 12 13
PROFORMA FOR TESTING MASONRY STONES.
Sr. No.
Date of Testing
Source & details of Samples
Specific gravity
Water Absorption
Compre-ssive
strength Kg/cm2 Kg/cm2
Name of Lab. No.& Dt. Under which the
results received.
Dated Signature
of Dy. Engr
Remarks
1 2 3 4 5 6 7 8 9
PROFORMA FOR TESTING OF STONE AGGREGATE
Sr. No. Nominal size of metal
Date of testing Impact value Crushing value Los Angles abrasing value test
1 2 3 4 5 6
Water Absorbtion
Stripping value
SIEVE ANALYSIS % flakiness
Index
No. & Dt. Under which the results are received from
the laboratory
Dated Signature of the Dy.
Engr.
Remarks
I.S. sieve % passing by weight
7 8 9 10 11 12 13 14
PROFORMA FOR TESTING OF CEMENT CONCRETE CUBES
Sr. No.
Date of concreting.
Grade of concrete.
Total Quantity of
concrete laid during the
day.
Nos. of cubes &
identification there on
Location where
concrete used.
Water cement
ratio
Slump observed.
1 2 3 4 5 6 7 8
Date of Testing
of Cube
Age of
Cube
Dimension of cube
Weight of
cube.
Observed comp.
Strength Kg/cm2
Calculated Comp.
strength728
Ref. No. from
Laboratory
Dated Signature of the Dy. Engr.
Remarks
9 10 11 12 13 14 15 16 17
