Analyses for construction industry

We are aware that the concept of construction is a very broad mosaic of inputs, processes and activities. Within this framework, we can carry out a whole range of analyses that are beneficial from the following points of view:

Ecology and economy – refers to materials and by-products created by construction activities (soil, asphalt mixtures, rubble) and the possibilities of their reuse

The quality of the resulting work - which, among other things, depends on the quality of the construction and other materials used - we test the input raw materials for their production, including the raw materials for making bricks

Economy and safety - How do you plan repairs of bridge structures? Are they absolutely necessary, or can they wait 5 years so that time can be dedicated to more urgent reconstructions? We supply the facts for this decision-making process – degree of degradation of structures, evaluation of the aggressiveness of the environment, level of protection of structures against aggressive influences

Who are our clients?

• Construction companies
• Producers of concrete and mortar mixtures
• Producers of cement
• Producers of building materials
• Producers of bricks
• Operational laboratories
• Road laboratories
• Universities
• Research facilities

What do we offer?

• Analysis of asphalt mixtures from roadway reconstructions in terms of their use (according to 130/2019 Sb.)
• Analysis of material generated during construction activities from the point of view of its further treatment (according to 294/2005 Sb., amendment 387/2016)
  • Sample leaching according to 294/2005 Sb., Table 2.1 (landfilling)
    • Leachate classes I, II and III
  • Analysis of dry matter according to 294/2005 Sb., Annex No. 10 (alignment of terrain surface)
  • Table 10.1 – Chemical analysis of dry matter
  • Table 10.2 – Ecotoxicity
• Analysis of substances in concrete production (concrete admixtures)
  • Setting retarders (preparations based on phosphates and sugar derivatives, tetrasodium pyrophosphate, sucrose)
  • Solidification and hardening accelerators (hydroxides, halides, nitrites, nitrates, sulphates and thiosulphates, aluminates...)
• Analysis of substances in the production of concrete and mortar (admixtures for concrete and mortar)
  • Determination of chlorides according to ČSN EN 480-10 (precipitation of Cl- with AgNO₃ solution, it is necessary to know the composition of the admixture - sample pretreatment differs)
  • Determination of alkalis according to ČSN EN 480-12 (determination of Na₂O and K₂O after HNO₃ mineralisation by AAS technique)
• Analysis of water for concrete production (mixing water) according to ČSN EN 1008
  • The quality of the mixing water affects the setting time, the development of the strength of the concrete and the protection of the reinforcement against corrosion
• Analysis of the aggressiveness of the environment – effect on concrete structures
  • According to ČSN 73 1215 Concrete Structures - classification of the aggressiveness of environments (standard cancelled in 2004, but still applied)
  • Specific analyses according to the nature of the environment that affects or will affect the concrete structure
    • Liquid environment: aggressive CO₂, water hardness, pH, Mg²⁺, NH^{4 +}, SO^42-, total salt content
    • Solid environment: sulphates
    • Gas environment: humidity, temperature and composition of gases
  • According to ČSN EN 206 Concrete – specification, performance, production and conformity
• Analysis of the aggressiveness of the environment – effect on metal structures
  • According to ČSN 03 8375 Principles for the protection of the outer surface of metal pipes buried in soil or immersed in water against corrosion
  • Water: pH, aggressive CO₂, conductivity, SO₃+Cl content
  • Soil: total S, Cl-, pH,
  • Aggressiveness of soils and waters on steel: apparent soil resistivity, water conductivity, current density in the ground, in a foreign current field
  • According to ČSN 03 8372 Principles for the protection of non-linear devices buried in the ground or immersed in water against corrosion
  • Assessment of the quality of buildings, degradation, new buildings - choosing the appropriate protection (coatings, insulation)
• Analyses of cement
  • According to ČSN EN 196-2 Cement Testing Methods – chemical analysis
  • Determination of sulphates
  • Insoluble residue in HCl and sodium carbonate
  • Sulphides
  • Oxides (SiO₂, Fe₂O₃, Al₂O₃, CaO, MgO)
  • Quality of cement used, assessment of building degradation, aggregate and binder content
• Analysis of raw materials for bricks
  • Analysis of clays, raw bodies and fired bodies
    • Sulphur total, sulphate
    • Organic substances
    • Exchange capacity
    • Oxides (CaO, MgO, K₂O, Na₂O, Mno,FeO, Al₂O₃, Fe₂O₃,SiO₂, TiO₂)
    • Loss on annealing