Construction laboratory testing, structural elements in buildings and engineering structures, structural inspections, technical assessments, and expert evaluations.
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Testing of construction products and structures to 79 standardised methods.
Construction soils (1) / Aggregates (2) / Unbound and hydraulically bound mixtures (3)
- 1.1
- In-place dry density by the sand-cone method
- AASHTO T 191 (1,2,3)
- 1.2
- Maximum dry density. Optimum water content. Proctor method.
- EN 13286-2 Procedure 7.1, 7.2, 7.4 and 7.5 (1,2,3)BDS 17146 cl. 3.3 - position 1) test type Н 100, М 100; position 2) test type Н 150, М 150 (1,2,3)
- 1.3
- Elastic modulus / Ee1; Ee2; Ee3; Ee mean /
- BDS 15130 (1,2,3)
- 1.4
- Deformation modulus / E1; E2; E3 /
- BDS 15130 (1,2,3)
- 1.5
- Ratio of deformation moduli E2:E1
- BDS 15130 (1,2,3)
- 1.6
- Deformation modulus
- Regulation No. 55, SG 18/2004, art. 47 (1,2,3)
- 1.7
- Water content
- EN 1097-5 (1,2,3)
- 1.8
- Bulk density / dry density
- Regulation No. РД-02-20-2, SG 79/2018, Annex No. 18 (1,2,3)
- 1.9
- Degree of compaction
- Regulation No. РД-02-20-2, SG 79/2018, Annex No. 18 (1,2,3)BDS 17146 (1,2,3)
- 1.10
- Compressive strength
- EN 13286-41 (3)
- 1.11
- Bearing capacity and deformability by static plate load test: deformation modulus (Ev1; Ev2); ratio of deformation moduli (Ev2/Ev1); modulus of subgrade reaction (k); settlement (s)
- DIN 18134 (1,2,3)
- 1.12
- Bearing capacity and deformability by static plate load test: deformation modulus (Ev1; Ev2); ratio of deformation moduli (Ev2/Ev1); modulus of subgrade reaction (k); settlement (s)
- ASTM D1195/ D1195M (1,2,3)ASTM D1196/ D1196M (1,2,3)
- 1.13
- Modulus of elasticity
- EN 13286-43, cl. 4 – under compression testing (3)
- 1.14
- Particle density: apparent particle density; oven-dried particle density; saturated and surface-dried particle density; pre-dried particle density; particle density after saturation to constant mass; water absorption
- EN 1097-6 cl. 7 wire-basket method, Annex A cl. A.3 wire-basket method and Annex B (1,2,3)water absorption: EN 1097-6 cl. 7 wire-basket method and Annex B (1,2,3)
- 1.15
- Particle size distribution
- EN 933-1 (1,2,3)
- 1.16
- Fines passing the 0.063 mm sieve
- EN 933-1 (1,2,3)
Anti-corrosion and fire-protective coatings, paints and varnishes on metals
- 2.1
- Thickness of non-magnetic coatings on magnetic substrates
- EN ISO 2178
- 2.2
- Thickness of non-conductive coatings on non-magnetic electrically conductive metal substrates
- EN ISO 2360
Reinforced concrete structures
- 3.1
- Presence, location, size and concrete cover of reinforcement
- BS 1881-204
- 3.2
- Bond under tensile loading / tensile strength of coatings on concrete
- ASTM D 7234
- 3.3
- Compressive strength
- EN 12504-2EN 13791EN 13791/ NA
- 3.4
- Ultrasonic pulse velocity. Compressive strength. Elastic modulus. Crack depth and width. Thickness
- EN 12504-4EN 13791EN 13791/ NA
- 3.5
- Integrity of deep foundations
- ASTM D5882*NF P 94-160-2NF P 94-160-4
- 3.6
- P-wave velocity and thickness of concrete slabs
- ASTM C1383
- 3.7
- Corrosion potential of uncoated reinforcing steel in concrete
- ASTM C876
- 3.8
- Tensile strength and bond strength of concrete and repair systems
- ASTM C1583/C1583M
- 3.9
- Tensile adhesion strength. Bond
- ASTM D7522/D7522M
- 3.10
- Depth of carbonation
- EN 14630
- 3.11
- Secant modulus of elasticity in compression (initial and stabilised)
- EN 12390-13
- 3.12
- Compressive strength of cores
- EN 12504-1EN 12390-3
- 3.13
- Surface tensile strength
- ASTM D7234 (X2.1)
Concrete
- 4.1
- Compressive strength
- EN 12390-3
- 4.2
- Density
- EN 12390-7
- 4.3
- Compressive strength of cores
- EN 12504-1EN 12390-3
- 4.4
- Secant modulus of elasticity in compression (initial and stabilised)
- EN 12390-13
- 4.5
- Freeze-thaw resistance, accelerated method: mass loss; reduction of ultrasonic pulse velocity
- EN 206+A2/NA Annex NA.O. cl.2EN 12504-4
- 4.6
- Freeze-thaw resistance by direct freezing and thawing: relative mass loss; relative strength loss
- EN 206+A2/NA, annex NA.O
- 4.7
- Flexural tensile strength
- EN 12390-5
- 4.8
- Splitting tensile strength
- EN 12390-6
- 4.9
- Ultrasonic pulse velocity. Compressive strength. Elastic modulus. Crack depth and width. Thickness
- EN 12504-4EN 13791EN 13791/ NA
- 4.10
- Compressive strength
- EN 12504-2EN 13791EN 13791/ NA
- 4.11
- Flexural tensile strength (LOP and residual) of fibre-reinforced concrete. Equivalence between CMOD and deflection: limit of proportionality (LOP); residual flexural tensile strength
- EN 14651+A1
- 4.12
- Flexural strength of fibre-reinforced concrete: first-crack strength; first-crack deflection; peak strength; residual strength; absorbed energy; equivalent flexural strength
- ASTM C1609/C1609M
Waterproofing
- 5.1
- Adhesion strength under tensile loading
- ASTM D7234
- 5.2
- Tensile strength
- Bulgarian Technical Rules for the design and execution of waterproofing on reinforced concrete road bridges на Road Administration от 1997 , Annex 1
Sprayed concrete
- 6.1
- Flexural tensile strength (first peak, ultimate and residual) of fibre-reinforced beam specimens
- EN 14488-3
- 6.2
- Tensile strength / bond of cores in direct tension
- EN 14488-4+A1
- 6.3
- Energy absorption capacity of fibre-reinforced slab specimens
- EN 14488-5
- 6.4
- Thickness of sprayed concrete on the substrate
- EN 14488-6
- 6.5
- Fibre content of fibre-reinforced sprayed concrete
- EN 14488-7
- 6.6
- Secant modulus of elasticity in compression (initial and stabilised)
- EN 12390-13
- 6.7
- Freeze-thaw resistance, accelerated method: mass loss; reduction of ultrasonic pulse velocity
- EN 206+A2/NA Annex NA.O. cl.2EN 12504-4
- 6.8
- Freeze-thaw resistance by direct freezing and thawing: relative mass loss; relative strength loss
- EN 206+A2/NA, annex NA.O
- 6.9
- Compressive strength of cores
- EN 12504-1EN 12390-3
- 6.10
- Flexural tensile strength
- EN 12390-5
- 6.11
- Splitting tensile strength
- EN 12390-6
- 6.12
- Density
- EN 12390-7
- 6.13
- Ultrasonic pulse velocity. Compressive strength. Elastic modulus. Crack depth and width. Thickness
- EN 12504-4EN 13791EN 13791/ NA
- 6.14
- Compressive strength
- EN 12504-2EN 13791EN 13791/ NA
- 6.15
- Depth of carbonation
- EN 14630
- 6.16
- Surface tensile strength
- ASTM D7234 (X2.1)
- 6.17
- Tensile strength and bond strength
- ASTM C1583/C1583M
- 6.18
- Flexural tensile strength (LOP and residual) of fibre-reinforced concrete. Equivalence between CMOD and deflection. Limit of proportionality (LOP); residual flexural tensile strength
- EN 14651+A1
- 6.19
- Flexural strength of fibre-reinforced concrete: first-crack strength; first-crack deflection; peak strength; residual strength; absorbed energy; equivalent flexural strength
- ASTM C1609/C1609M
- 6.20
- Density
- EN 12350-6
Geotechnical anchors
- 7.1
- Capacity of the anchor to sustain the proof load Pp: displacement of the tendon head; creep rate and magnitude; apparent free tendon length; load loss
- EN ISO 22477-5, cl.10.4; Annex A, B and D
- 7.2
- Capacity of the ground anchor to sustain the proof load Pp: displacement of the tendon head; creep rate and magnitude; apparent free tendon length; load loss
- EN 1537
Products for the protection and repair of concrete structures, protective coatings
- 8.1
- Bond under tensile loading
- EN 1542
- 8.2
- Compressive strength
- EN 12190
- 8.3
- Modulus of elasticity in compression
- EN 13412
- 8.4
- Tensile adhesion of coatings
- ASTM D7234
- 8.5
- Tensile strength and bond strength
- ASTM C1583/C1583M
- 8.6
- Tensile adhesion strength. Bond
- ASTM D7522/D7522M
Injection grouts
- 9.1
- Bond under tensile loading
- EN 1542ASTM D 7234
- 9.2
- Compressive strength
- EN 445, cl. 4.6
Sampling
- 10.1
- Fresh concrete mixes
- EN 12350-1
- 10.2
- Concrete
- EN 12504-1
- 10.3
- Construction soils (1) / Aggregates (2) / Unbound and hydraulically bound mixtures (3)
- EN 932-1 (1,2,3)
- 10.4
- Sprayed concrete
- EN 14488-1
Numbers in brackets after a standard refer to the numbered products in that group’s title.
Contact
Tell us briefly what needs testing and we will get back to you.
- vnle@vnle.bg
- Phone
- +359 885537186
- Laboratory address
- Sofia 1756, Malinova Dolina district, 125 Kliment Ohridski Blvd, Bulgaria
- Registered office
- Sofia 1335, Lyulin district, 644 Petar Goranov St, ent. 1, fl. 1, apt. 2, Bulgaria
Sofia 1756, Malinova Dolina district, 125 Kliment Ohridski Blvd, Bulgaria
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Sofia 1335, Lyulin district, 644 Petar Goranov St, ent. 1, fl. 1, apt. 2, Bulgaria
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