Recognition content
The list of experimental criteria eligible for specialized construction activities of LAS-Construction 81 laboratory includes: Cement mechanical and physical testing; Aggregate testing for concrete and mortar; Solid asphalt (bitumen) testing; Physical and mechanical testing of concrete and heavy concrete mixtures; Mechanical testing of construction mortar; Soil mechanical testing in the laboratory; Experimenting with metal materials and welding connections; Manhole covers, garbage screens; Asphalt concrete testing; Testing mineral powder in asphalt concrete; Testing of Portland cement-based wall putty; Testing wood and wood products; Corrugated roofing experiment; Mechanical testing of roofing tiles; Physical and mechanical testing of refractory bricks - heat insulation; Mechanical testing of ceramic tiles; Mechanical testing of masonry bricks; Experimenting with foam concrete bricks, non-autoclaved aerated concrete, and autoclaved aerated concrete bricks; Mechanical testing of concrete blocks; Mechanical testing of self-inserting concrete bricks; Terazo brick experiment; Physical and mechanical testing of cement tiles; Testing of granite floor tiles; Experimenting with natural stone cladding and paving; Testing reinforced concrete sewer pipes; Testing of reinforced concrete box culverts; Testing centrifugal reinforced concrete electric poles; Testing of precast concrete curbs; Thermoplastic pipe testing; Field experiments; Soil, sand, ore, cement; Aggregate for concrete and mortar; Plaster. Technical standards used for tests are fully listed, including Vietnamese and foreign standards (if any). When there is a new version of technical standards to replace the old standards, the corresponding new standards must be applied. This certificate is valid for 05 years from the date of issue and replaces Decision No. 419/QD-BXD dated September 22, 2011 of the Minister of Construction.