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STONE TESTING LABORATORY (R&D CENTRE)

Centre for Development of Stones (CDOS) has established a Dimensional Stone Testing Laboratory cum R&D Centre with the assistance of Ministry of Mines, Govt. of India, United Nations Industrial Development Organization (UNIDO), Government of Rajasthan, and Rajasthan State Industrial Development & Investment Corporation Ltd. (RIICO).

Testing Center

Various Tests as per American (ASTM) and European (EN) Standard are being performed on dimensional stone since June, 2006. Test as per Indian Standard (IS) and Chemical Analysis of dimensional stones have also been introduced. • Tests Being Performed
• Sample Sizes
• Preparation of samples and their dispatch
• Test Charges
• Mode of Payment

TESTS BEING PERFORMED

Following tests are being performed accordance to American (ASTM), European (EN) and Indian (IS) standards.

A. PHYSICAL TESTS:

ASTM Test Standard:

S. No. Standard Dimensional Stone Test Methods
1. C 97/C 97M-09 Water absorption, Bulk density and Bulk specific gravity
2. C 121-06 Water absorption of slate
3. C 170/ C 170M-09 Compressive Strength
4. C 241/ C 241M-09 Abrasion resistance of stone subjected to foot traffic
5. C 880/ C 880M-09 Flexural Strength
6. C 99/ C 99M-09 Modulus of Rupture
7. D 4644-04 Slake durability of shale’s and similar weak rocks
8. E 303-03 Slip Resistance Value using the British Pendulum Tester
9. D 523-1999 Specular Gloss

EN Test Standard:

S. No. Standard Natural Stone Test Methods
1. EN 1926:1999 Compressive Strength
2. EN 12370:2006 Resistance to Salt Crystallization
3. EN 12371:2001 Frost Resistance
a) EN 1926:1999 Pre & Post Compressive Strength (Freeze Thaw test)
b) EN 12372:2006 Pre & Post Flexural Strength (Freeze Thaw test)
c) EN 14066:2003 Resistance to Ageing by Thermal Shock (change in mass % only)
4. EN 12372:2006 Flexural Strength under concentrated load
5. EN 13161:2001 Flexural Strength under constant moment
6. EN 13755:2002 Water Absorption at atmospheric pressure
7. EN 13919:2002 Resistance to ageing by SO2 action in presence of humidity
8. EN 14157:2004 Abrasion resistance
9. EN 14158:2004 Determination of Rupture Energy
10. EN 14231:2003 Slip resistance by means of the Pendulum Tester
11. EN 12407:2000 Petrographic Examination
12. EN 14066:2003 Resistance to Ageing by Thermal Shock (change in mass % only)
13. EN 1925:1999 Water Absorption Coefficient by Capillarity
14. EN 12057:2004,
EN 12058:2004 		Tactility (Polished Surface)
15. EN 12057:2004,
EN 12058:2004,
EN 1469:2004 		Visual Appearance (Polished Surface)

IS Test Standard:

S. No. Standard no. Natural Building Stones
1. IS 1121 : 1974 (Part 1) Compressive Strength
2. IS 1122 : 1974 True Specific Gravity
3. IS 1123 : 1975 Identification of natural building stones
4. IS 1124 : 1974 Water Absorption, Apparent Specific Gravity and Porosity
5. IS 1126 : 1974 Durability of natural building stones

Other Test:

  • Moh’s Hardness
  • Rebound Hardness
B. CHEMICAL TESTS:

Chemical analysis for following radicals is available –
  • I. CaO
  • II. MgO
  • III. SiO2
  • IV. LOI
  • V. Fe2O3
  • VI. Al2O3
  • VII. Na
  • VIII. K
SIZE OF SAMPLE-
  • 1 Kg sample

SAMPLE SIZES

The required number of specimens and size is mentioned below -

(ASTM) Test Standard:

Standard Dimensional Stone Test Methods Nos. Required Dimensions
C 97/C 97M Bulk Density, Water Absorption and Bulk Specific Gravity 8 50 x 50 x (10-12) mm3
C 121 Water Absorption of Slate 8 125 x 125 x (5-8) mm3
C 170/ C 170M Compressive Strength 20 50 x 50 x 50 mm3
C 241/ C 241M Abrasion Resistance of stone subjected to foot traffic 6 50 x 50 x 25 mm3
C 880/ C 880M Flexural Strength 20 350 x 100 x 30 mm3
C 99/ C 99M Modulus of rupture 20 200 x 100 x 60 mm3
D 4644 Slake Durability of Shale’s and similar weak rocks - 1 Kg stone fragments 40 to 60 grams each.
E 303 Slip Resistance Value using the British Pendulum Tester 6 tiles 160 x 160 x 15 mm3
D 523 Specular Gloss 6 200 x 200 x (15-20) mm3

EN Test Standard:

Standard Natural Stone Test Methods Nos. Required Dimensions
EN 1926 Compressive Strength 20 50 x 50 x 50 mm3
EN 12370 Resistance to Salt Crystallization 7 40 x 40 x 40 mm3
EN-12371
Sub test-EN 1926 		Frost resistance (Pre & Post Compressive strength) 40 50 x 50 x 50 mm3
Sub Test
EN 12372 		Pre & Post Flexural strength (Freeze Thaw test) 40 300 x 50 x 50 mm3
Sub Test
EN 14066 		Resistance to Ageing by Thermal Shock (change in mass % only) 7 200 x 200 x 20 mm3
EN 12372 Flexural Strength under concentrated load 20 300 x 50 x 50 mm3
EN13161 Flexural strength under constant moment 20 300 x 50 x 50 mm3
EN 13755 Water Absorption at atmospheric pressure 6 50 x 50 x 50 mm3
EN 13919 Resistance to ageing by SO2 action in presence of humidity 7 120 x 60 x 10 mm3
EN 14157 Abrasion Resistance 6 100 x 70 x 70 mm3
EN 14158 Rupture Energy 7 200x 200 x 30 mm3
EN 14231 Slip Resistance by means of the Pendulum Tester 6 tiles 160 x 160 x 15 mm3
EN 12407 Petrographic Examination 3 100 x 100 x 100 mm3 the sample shall be fresh, insitu and representative.
EN 14066 Resistance to Ageing by Thermal Shock (change in mass % only) 7 200 x 200 x 20 mm3
EN 1925 Water Absorption Coefficient by Capillarity 6 50 x 50 x 50 mm3
EN 12057,
EN 12058,
EN 1469 		Visual Appearance 3 500 x 500 x 18 mm3 (Polished Surface)
EN 12057,
EN 12058 		Tactility 3 500 x 500 x 18 mm3 (Polished Surface)

IS Test Standard:

Standard Natural Building Test Methods Nos. Required Dimensions
IS 1121 (Part 1) Compressive strength 15 50 x 50 x 50 mm3
IS 1122 True Specific Gravity 2 Kg pieces 50 gram powder (150 micron IS Sieve)
IS 1123 Identification 3 100 x 100 x 100 mm3
IS 1124 Water Absorption, Apparent Specific Gravity and Porosity 5 Kg Lumps 3 Kg (20 mm IS Sieve)
IS 1126 Durability 5 Cylindrical 50 mm diameter & 100 mm length

Other Test:

S. No. Natural Stone Test Methods Nos. Required Dimensions
1. Moh’s Hardness 2 50 x 50 x 25 mm3
2. Rebound Hardness 2 200 x 200 x 150 mm3

PREPARATION OF SAMPLES AND THEIR DISPATCH

(I)Sample should be prepared from single fresh block. Block should be representative and free from cracks, fractures etc.

(II)Sample size & numbers should be strictly according to the test requirement. However, 2- 3 samples should be sent extra, so that extra samples could be utilized, in case, any sample is damaged in transportation.

(III)Samples should be packed properly so that corners and edges of the samples may not be damaged during transportation.

(IV)In case of core samples, sample should be of NX size, (dia-54.4 mm) free from cracks, fractures etc and length of each piece of core should be as per the test requirement.

(V)All faces of samples should be smooth with sharp and distinct edges.

TEST CHARGES

Samples are to be provided by the client as per requirement of the test standard. However, sample preparation facilities are available at test centre. Sample preparation charges are applicable in addition to testing charges.

A. Physical Properties

(ASTM) Test Standard:
S. No. Test Standard Testing charges (Rs.) Sample preparation charges (Rs) Total charges (Rs)
1. C 97/C 97M-09* 9000 1500 10500
2. C 121 3000 1500 4500
3. C 170/ C 170M-09 7500 2500 10000
4. C 241/ C 241M-09 7000 2000 9000
5. C 880/ C 880M-09 7500 2500 10000
6. C 99/ C 99M-09 7500 2500 10000
7. D 4644 4000 - 4000
8. E 303 5000 2000 7000
9. D 523 2000 1500 3500
*Standard included Water Absorption, Bulk Density & Bulk Specific Gravity tests. Test Charges for each test is Rs. 3000.
(EN) Test Standard :
S. No. Test Standard Testing charges (Rs) Sample preparation charges (Rs) Total charges (Rs)
1. EN 1926 6500 2500 9000
2. EN 12370 13000 1500 14500
3. EN 12371 - - -
3a. EN 1926 30000 4000 34000
3b. EN 12372 30000 4000 34000
4. EN 12372 6500 2500 9000
5. EN 13161 6500 2500 9000
6. EN 13755 4000 1500 5500
7. EN 13919 6000 2000 8000
8. EN 14157 6000 2000 8000
9. EN 14158 4000 2000 6000
10. EN 14231 7000 2000 9000
11. EN 12407 6000 - 6000
12. EN 14066 15000 - 15000
13. EN 1925 4000 1000 5000
14. EN 12057,
EN 12058,
EN 1469 		2000 - 2000
15. EN 12057,
EN 12058 		2000 - 2000
Other Test
1.  Moh’s Hardness 1500 - 1500
2. Rebound Hardness 2000 - 2000

IS Test Standard:


The test charges are at par to the corresponding ASTM/EN test standard.

B. Chemical Tests

Type of Rocks Test Charges for Analysis
Carbonate based rocks- marble, limestone etc. Rs. 2500/- for 6 radicals
Silica based rocks –sandstone, quartzite etc. Rs. 3000/- for 6 radicals and Rs. 600/- extra for each additional radical (Na & K)
Granitic rocks Rs. 3500/- for 6 radicals and Rs.600/- extra for each additional radical (Na & K)
Note:-

1. 6 radical includes – CaO, MgO, SiO2, LOI, Fe2O3 and Al2O3

2. Test charge for any single radical is Rs. 1000/- only

Mode of payment:

(I) 100% in advance through demand draft. The demand draft should be in favour of Centre for Development of Stones, payable at Jaipur.

(II) 10% discount would be allowed to CDOS members (excluding annual members).

(III) The service charges and cess, if applicable will be charged extra.

Please incorporate following information along with the test requirement:

Name of the company: _________
Address: _________
Name of contact person: _________
Phone contact/Fax contact: _________
E-mail: _________
Name of the Material/Trade Name: _________
Quarry and place of origin (region country): _________
Petrographic name of the stone: _________
Test required and reference to the offer: _________

For any enquiry please contact Mr. R.K.Gupta, Chief Executive Officer or Mr. R.P. Vijayvergia, Addl. Director (Geology), Incharge Test Laboratory.
Centre for Development of Stones (CDOS) is an autonomous organisation promoted by the Government of Rajasthan and RIICO.
RIICO  Ashok Chakra