The Independent Construction Laboratory
to the Transport Infrastructure and Construction Institute Ltd.

is accredited by the Executive Agency "Bulgarian Accreditation Service" with the following scope:


  • Asphalt mixtures

  • Laid and compacted asphalt layers

  • Road bitumens

  • Polymer-modified bitumens

  • Road surfaces

  • Recipe design


  • Fine fillers (mineral flour)

  • Rock materials for bituminous mixtures and pavements for roads, aerodromes and other transport areas

  • Rock materials for unbound and hydraulically bound mixtures for use in construction and road construction

  • Rock materials for ballast prism and railway lines

  • Concrete admixtures

  • Construction soils

  • Hydraulically bound mixtures

  • Mixtures of unbound materials


  • Concrete mix

  • Concrete

  • Waterproofing of concrete bridges and other concrete surfaces on which vehicles pass

  • Design of the composition of cement-stabilized mixtures