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Aggregate

   Description

Method

Accre-ditation

1.

Tests for geometrical properties of aggregates

1.1

Determination of particle size distribution

 EVS-EN 933-1,
EVS-EN ISO 17892-4

EAK

1.2

Determination of particle shape. Flakiness index

EVS-EN 933-3

EAK

1.3

Determination of particle shape. Shape index

EVS-EN 933-4

 

1.4

Determination of percentage of crushed and broken surfaces

EVS-EN 933-5

 

1.5

Assessment of fines. Methylene blue test

EVS-EN 933-9

EAK

2.

Tests for general properties of aggregates

2.1

Simplified petrographic description

EVS-EN 932-3

 

3.

Tests for mechanical and physical properties of aggregates

3.1

Determination of resistance to fragmentation – Los Angeles test

EVS-EN 1097-2

EAK

 – LA (main fraction 10/14 mm)

 – LA (alternative fractions 4/6.3; 4/8; 6.3/19; 8/11.2; 11.2/16; 16/31.5)

 – LARB (railway ballast fr 31.5/50 mm)

3.2

Determination of loose bulk density and/or voids

EVS-EN 1097-3

 

3.3

Determination of water content

EVS-EN 1097-5

 

3.4

Determination of particle density and water absorption

EVS-EN 1097-6

EAK

3.5

Determination of the resistance to wear by abrasion from studded tyres Nordic test (fr 8/11 and 11/16 mm)

EVS-EN 1097-9

EAK

4.

Tests for thermal and weathering properties of aggregates

4.1

Determination of resistance to freezing and thawing of the aggregate    

 – in distilled water

EVS-EN 1367-1

EAK

 – Magnesium sulfate test

EVS-EN 1367-2

 

 – in 1% NACl solution

EVS-EN 1367-6

 

5.

Tests for unbound and hydraulically bound mixtures

5.1

Determination of the laboratory reference density and water content – Proctor compaction (max D = 63 mm)

EVS-EN 13286-2

EAK

 – with standard Proctor device

EAK

 – with modified Proctor device

 

5.2

California bearing ratio test

EVS-EN 13286-47

 

5.3

Manufacture of test specimens using Proctor equipment

EVS-EN 13286-50

 

6.

Tests according to GOST standards

6.1

Determination of granulometric (grain size) and microaggregate distribution

GOST 12536-2014

EAK

6.2

Determination of dust and clay particle content, particle size distribution and fineness module/grain fitness of sand

GOST 8735-88

 

6.3

Determination of the filtration module (factor)

GOST 25584-90 (Lisa 5)

EAK

Sojuzdornii

 

6.4

Determination of plastic and liquid limits

GOST 5180-2015

 

6.5

Determination of water content  

6.6

Classification of soils

GOST 25100-2011

EAK

6.7

Gravel and crushed stone:

GOST 8269.0-97

 

 – Clay and dust particle content

 

 – Particle size distribution

 

 – Flaky and needle-shape particle content

 

 – Weak particle content

 

 – Water absorption

 

 – Loose bulk density and voids

 

 – Bulk density

 

 – Resistance to fragmentation (cylinder method)

 

 – Resistance to wear in shelf drum

 

 – Shock resistance

 

 – Frost resistance

 

7.

Other tests

7.1

Colorimetric determination of humus content

EVS-EN 1744-1

 

7.2

Determination of organic matter content by loss on ignition method

EVS 1997-2

 

7.3

Particle size distribution of clay by a hydrometer method

ISO 11277

 

7.4

Soil classification by particle size

EVS 1997-1:2003

 

7.5

Crushing a test specimen with laboratory’s jaw crusher    

Filler

   Description

Method

Accre-ditation

1.

Assessment of fines – Grading of fillers (air jet sieving)

EVS-EN  933-10

 

2.

Determination of water content

EVS-EN 1097-5

 

3.

Determination of the voids of dry compacted filler

EVS-EN 1097-4

 

4.

Determination of particle density

EVS-EN 1097-7

 

5.

Assessment of fines – Methylene blue test

EVS-EN 933-9

EAK

6.

Determination of the specific surface area by Blaine test

EVS-EN 196-6

 

7.

Determination of apparent bulk density

EVS-EN 1097-3

 

 Road Salt

   Description

Method

Accre-ditation

1.

Determination of grain size distribution

EVS-EN 933-1

EAK

2.

Determination of water content

EVS-EN 1097-5

 

3.

Determination of water insoluble residue

EVS-EN 1744-1

 

4.

Chloride content (measured in the Central Laboratory of the Estonian Health Board)

GOST 13685-84

 

 Testing of Aggregate Base Courses

   Description

1.

Determination of the compression index by using dynamic cone penetrometer

2.

Determination of load bearing capacity by using LOADMAN device