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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 Organisation (UNIDO) & Government of Rajasthan and Rajasthan State Industrial Development & Investment Corporation Ltd. (RIICO).

View of testing centre

Stone Testing Laboratory

TESTS BEING PERFORMED

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

ASTM Test Standard:
S.
No.
Standard
Dimensional Stone Test Methods
1. C 97 Water absorption and bulk Specific Gravity
2. C 121 Water absorption of slate
3. C 170 Compressive Strength
4. C 241 Abrasion resistance of stone subjected to foot traffic
5. C 880 Flexural Strength
6. D 4644 Slake durability of shale’s and similar weak rocks
7. E 303 Slip Resistance Value using the British Pendulum Tester

EN Test Standard:

S.
No.
Standard
Natural Stone Test Methods
1. EN 1926 Compressive Strength
2. EN 12370 Resistance to Salt Crystallization
3. EN 12371 Frost Resistance
4. EN 12372 Flexural Strength under concentrated load
5. EN 13755 Water Absorption at atmospheric pressure
6. EN 13919 Resistance to ageing by SO2 action in presence of humidity
7. EN 14157 Abrasion resistance
8. EN 14158 Determination of Rupture Energy
9. EN 14231 Slip resistance by means of the Pendulum Tester


SAMPLE SIZES

The number of specimens mentioned below, is the minimum numbers required by the standard. However laboratory requires 3 extra specimens for each test in substitution of possible damages.

(ASTM) Test Standard:
Standard
Dimensional Stone Test Methods
Nos.
Required Dimensions
C 97 Water Absorption and Bulk Specific Gravity 10 50 x 50 x (10-12) mm
C 121 Water Absorption of Slate 8 50 x 50 x (5 -8) mm
C 170 Compressive Strength 20 2” x 2 ”x 2”
C 241 Abrasion Resistance of stone subjected to foot traffic 6 2” x 2” x 1”
C 880 Flexural Strength 20 381 x 102 x 32 mm
D 4644 Slake Durability of Shale’s and similar weak rocks - 1 Kilogram fragments weighing 40 to 60 gram each.
E 303 Slip Resistance Value using the British Pendulum Tester 6
slabes		 150 x 160 x 15 mm

EN Test Standard:

Standard
Natural Stone Test Methods
Nos.
Required Dimensions
EN 1926 Compressive Strength 20 50 x 50 x 50 mm
EN 12370 Resistance to Salt Crystallization 10 40 x 40 x 40 mm
EN 12371 Frost Resistance Contact Laboratory Incharge
EN 12372 Flexural Strength under concentrated load 12 300 x 50 x 50 mm
EN 13755 Water Absorption at atmospheric pressure 6 50 x 50 x 50 mm
EN 13919 Resistance to ageing by SO2 action in presence of humidity 10 120 x 60 x 10 mm.
EN 14157 Abrasion Resistance 6 100 x 70 x 70
EN 14158 Rupture Energy 7 300 x 300 x 30
EN 14231 Slip Resistance by means of the Pendulum Tester 12 160 x 150 x 15 mm

Sample Requirements

(I) In case of core samples, sample should be of NX size, (dia-54.4 mm) free from cracks, ridges etc and length of each piece of core should not be less than 20 mm or as per the test requirement.

(II) In order to avoid the damage of sample during transportation, the sample should be sent through a personal/courier to CDOS at their cost.

(III) Sample should be properly packed so that rock sample are not further broken during transportation.

(iv) All the requires sample specimen shall be prepared from a single block or rock mass. Faces of the sample shall be parallel, smooth and shape edged.

 

TEST CHARGES

Samples are to be provided by the client as per requirement of the test standard. However if sample preparation is requested and prepared in the Test laboratory than only sample preparation charge are applicable in addition to testing charges.

The Test Charges are summarized below:
(ASTM) Test Standard:
S.
No.
Test Standard
Testing charges (Rs)
Sample preparation charges (Rs)
Total charges (Rs)
1. C 97 1500 - 1500
2. C 121 1500 - 1500
3. C 170 3000 2000 5000
4. C 241 3000 2000 5000
5. C 880 3000 2000 5000
6. D 4644 3000 - 3000
7. E 303 1000 1500 2500

(EN) Test Standard:

S.
No.
Test Standard
Testing charges (Rs)
Sample preparation charges (Rs)
Total charges (Rs)
1. EN 1926 3000 2000 5000
2. EN 12370 7000 1000 8000
3. EN 12371 Rate depends on customer requirement, contact Incharge, Test Laboratory for details
4. EN 12372 3000 2000 5000
5. EN 13755 1500 - 1500
6. EN 13919 3000 1000 4000
7. EN 14157 3000 2000 5000
8. EN 14158 3000 2000 5000
9. EN 14231 1000 1500 2500

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

Mode of payment:

(I) 100% in advance through cheque or draft. The cheque or draft should be in favour of CDOS payable at Jaipur.

(II) Discount may be allowed to different categories of CDOS members as applicable.


 

IMAGES

   



Please send the samples as per requirements of the standard along with the following information:

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. Suptt. Geologist, Incharge Test Laboratory.
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