Tests frequency and Acceptance Criteria in Testing of material for structures as per quality assurance level Q-4 of IRC: SP47-1998 and other IRC, and MORTHÂ Specifications.
S. No | Type of Construction | Frequency | Location | Acceptance Criteria | ||
1.0
Â Frequency and Acceptance Criteria in Testing:1.1 For Coarse Aggregate: |
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(i) | Moisture Content (IS:383, IS:2386 Part III) | Daily/at every day ofÂ concreting | Plant | Max. 5% | ||
(iI) | Specific Gravity (IS:383, IS:2386 – Part III) | 1) One per source and when source changes | Plant | – | ||
(iii) | Gradation/Sieve Analysis (IS:383, IS:2386 â€“ Part 1) | Daily | Plant | Table 1000-1 of MOSRTH Specifications for Road and Bridge Works | ||
(iv) | Aggregate Impact Value/Los Angles Abrasion Value (IS:383, IS:2386 Part IV) | 1) One per source
Â 2)Â Weekly |
Plant | Aggregate Impact Value 45% Max. for concrete other than for wearing surfaces; 30% Max. for concrete for wearing surfaces.
Â Los Angles Abrasion value 50% Max. for Concrete other than for wearing surfaces; 30% Max. for Concrete for wearing surfaces. |
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(vi) | Flakiness Index (IS:383,IS:2386 Part 1) | 1) One per source
Â 2) Weekly |
Plant | Max.Â 35%
Â MORTH Clause of 1007. |
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(vii) | Water absorption of Aggregate (IS383, IS:2386 Part III) | 1)One per source
Â 2) when sourcing changes |
Plant | Max.Â Â 10% | ||
(viii) | Soundness (Magnesium and sodium sulphate)
Â IS:383, IS:2386 Part V) |
1) One per source | Plant | Sodium sulphate
Â Max.Â 12% Magnesium sulphate Max.Â 18% |
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(ix) | Alkali-Aggregate reactivity (IS:383, IS:2386 Part VII, IS: SP-23) | 1) One per source | Plant | Fig. 6 of IS:2386 Part VII | ||
(x) | Petrographic Analysis (IS:383, ASTM 295, IS:2386 Part VIII) | 1)Â Â Â One per source | Plant | As per IS: 2386 Part VIII | ||
1.2
For Fine Aggregate: |
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(i) | Silt Content (IS:383, IS2386 Part II) | Daily | Plant | Max. 3% | ||
(ii) | Moisture Content (IS:383,IS:2386) | At every day of concreting | Plant | Max. 5% | ||
(iii) | Gradation/Sieve Analysis, Fineness Modulus (IS:383, IS:2386 â€“Part III) | Daily | Plant | Table 1000-2 of MORTH Specifications for Road and Bridge Works.
Â Fineness Modulus Min. 2.0% Max 3.5% |
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(iv) | Water absorption of Aggregate (IS:383, IS:2386 Part 3) | 1) One per source
Â 2)when sourcing changes |
Plant | Max 10% | ||
(ix) | Soundness (Magnesium and Sodium Sulphate)
Â IS:383, IS:2386 Part V) |
One per source | Plant | Sodium sulphate Max. 10%
Â Magnesium sulphate Max. 15% |
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1.3
For Ordinary Portland Cement: |
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1.3.1 |
Physical Tests (IS:8112) |
Â | Â | Â | ||
(i) | Initial Setting Time | 1) One per supply
Â 1) Monthly |
Plant | Min. 30 minutes | ||
(ii) | Final Setting Time | 1) One per supply
Â 2) Monthly |
Plant | Â Max. 600 minutes | ||
(iii) | Soundness (by Le-Chatlierâ€™s method)
Â By Autoclave (%) (IS:4031) |
One per supply | Plant | Max. 10mm
Â Max. 0.8%_{Â Â } |
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(iv) | Fineness (by Blaineâ€™s air permeability method) IS:4031 part-2 | One per supply | Plant | Min. 225 m^{2}/kg | ||
(v) | Compressive strength | 1) One per supply
Â 2) Monthly |
Plant | Min. 23 MPa (3 days)
Â Min. 33 MPa (7 days) Min. 43 MPa (28 days) |
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1.3.2 |
Chemical Tests (IS:8112) |
Â | Â | Â | ||
(i) | Loss on Ignition | One per supply | Plant | Max. 5% | ||
(ii) | Insoluble residue | One per supply | Plant | Max. 2% | ||
(iii) | Alumina Iron Oxide ratio | One per supply | Plant | Min. 0.66 | ||
(iv) | Lime Saturation factor | One per supply | Plant | Min. 0.66 Max. 1.02 | ||
(v) | Magnesia | One per supply | Plant | Max. 6% | ||
(vi) | Sulphuric anhydride | One per supply | Plant | Max. 3% | ||
(vii) | Alkalies | One per supply | Plant | Max. 0.6% | ||
(viii) | Chlorides | One per supply | Plant | Max. 0.05% | ||
1.4 For Water (IRC:21-2000/IS:3025): |
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(a) | The volume of 0.02N NaOH required to neutralize 100 ml sample of water using phenolphthalein as an indicator (IS:3025) | 1) One per supply
Â 2) Monthly |
In situ | Max. 5.0ml | ||
(b) | The volume of 0.02NÂ H_{2}SO_{4Â Â }
Â requiredÂ to neutralize 100 ml sample of water using methyl orange as an indicator (IS:3025) |
1) One per source
Â 2) Thrice in a year |
Insitu | Max. 25.0ml | ||
(c) | Solids (IS:456, IS:3025) | Â | Â | Â | ||
(i) | Organic | 1) One per source
Â 2) Thrice in a year |
Insitu | 200 mg/lit | ||
(ii) | Inorganic | 1) One per source
Â 2) Thrice In a year |
Insitu | 3000 mg/lit | ||
(iii) | Sulphates (SO_{4}) | 1) One per source
Â 2) Thrice in a year |
Insitu | 500 mg/lit | ||
(iv) | Chlorides (CI) | 1) One per source
Â 2) Thrice in a year |
Insitu | 500 mg/lit | ||
(v) | Suspended matter | 1) One per source
Â 2) Thrice in a year |
Insitu | 2000 mg/lit | ||
(d) | pH | 1) One per source
Â 2) Thrice in a year |
Insitu | Min. 6.0 | ||
1.5
Acceptance Criteria in Testing For Admixture: |
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(i) | Chloride Content (IS:9103, IS:6925) | 1) One per supply
Â 2) Yearly |
Plant | Within 10% of the value or within 0.2% whichever is greater as stated by the manufacturer. | ||
(ii) | Dry Material content (IS:9103) | 1) One per supply
Â 2) Yearly |
Plant | 5% of liquid admixtures respectively of the value state by the manufacturer | ||
(iii) | Ash content (IS:9103) | 1) One per supply
Â 2) Yearly |
Plant | ToÂ be within 5% of the value stated by the manufacturer | ||
(iv) | Relative density (IS:9103) | 1) One per supply
Â 2) Yearly |
Plant | To be within 2% of the value stated by the manufacturer. | ||
1.6
Acceptance Criteria in Testing for Concrete: |
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(i) | Chloride Content (IS:10262, IS:456,IRC:21) | Â OneÂ per New source | Plant | Max. 0.1% by mass of cement for PSC and 0.3% for RCC | ||
(ii) | Sulphate Content as SO_{3Â }(IS:456, IRC:21) | OneÂ per New source | Plant | Max. 4% by mass of cement | ||
(iii) | Air Content (Table 3, IS:10262) | Monthly | Plant | Nominal max. size of aggregate | Entrapped air as % of the volume of concrete | |
10mm | 3.0 | |||||
20mm | 2.0 | |||||
40mm | 1.0 | |||||
(iv) | Mix proportion | Every batch of concrete | Plant | As per approved mix design | ||
(v) | Sample of the cube (A sample means a set of 3 cubes) | Every concrete spread over the entire period of concreting | Insitu | Qty of concrete (m3) | No. of samples | |
<30
Â 31-50 51 & above |
3
Â 4 4 + One additional for each 50 m3 |
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(vi) | Workability (Slump) (IS:10262,IS:456, IRC:21) | Every batch of concrete at despatch as well as the delivery point | In situ | As specified for specific Grade, structural component and method of concreting | ||
(vii) | Temp. of Fresh concrete (MORTH Specs. Clause 1709) | Every batch of concrete at despatch as well as the delivery point | Insitu | Min. 5Â° C
Â Max. 40Â°C |
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(viii) | The density of Hardened Concrete | Every batch of concrete | Plant | – | ||
(ix) | Permeability (MORTH Specs. Clause 1716.5) | As and when required | Plant | Depth of penetration of water Max. 25mm | ||
(x) | Cube Strength of Concrete | Every batch of concrete | Plant | (i)Â Mean strength from any group of four consecutive samples should be greater than Characteristic strength + 3 MPa
Â (ii)Â Individual sample not less thanÂ Characteristic str â€“ 3 MPa |
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1.7
Acceptance Criteria in Testing For Mastic Asphalt: |
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(a) | Binder | OneÂ sampleÂ per Lot | Stacking yard | As per Table 500-29 of MORT&H Specifications for Road and Bridge Works | ||
(b) | Filler (Limestone powder) (IS:1514) | OneÂ sampleÂ per Lot | Stacking yard | Powder passing the 0.075 mm sieve and having calcium carbonate content not less than 80% by weight. | ||
(c) | Mix proportions | One sample per Lot | Insitu | As per JMF to be laid between 175Â° and 210Â°C | ||
d) | Hardness no IS:1195-1978 | In situ | In situ | 60-80 at 25ÂºC before addition of C.A. and 10-20 at 25ÂºC at the time of after addition of C.A. |