Recognition content
The list of testing criteria eligible for specialized construction activities of the LAS-Construction 482 laboratory includes: Loading tests to evaluate the durability, hardness, crack resistance of concrete components and structures; PP measures the thickness of the protective layer, position and diameter of reinforcement; Determine the rustiness of steel reinforcement in concrete; Evaluate concrete strength on construction structures; Design of concrete and reinforced concrete structures; Non-destructive testing of welded joints - PP ultrasonic; Check road surface roughness with PP sprinkled with sand; Determine the bending load, water absorption, water penetration time, and mass of tile lm2 saturated with water; Traffic sign paint - road marking material (Determination: Color, drying time, luminosity, heat resistance, softening temperature, abrasion, flow resistance, impact resistance, density , adhesion, yellowing index, calcium carbonate and inert fillers, film forming agents, glass beads; Test manhole covers and garbage screens: Check shape and size, load test; Check gabions and mats Stone and hexagonal mesh products: Check shape, mesh size, wire size, tensile test, elongation, density, hardness, elastic modulus, tension force, coating weight; Mechanical testing Stainless steel properties: Determining size and shape tolerances, tensile tests, bending tests, hardness tests; Determining alkali-silicon reactivity of aggregates; Determining concrete mix composition - Decision No. 778/QD - MOC of the Ministry of Construction.
Technical standards used for tests are fully listed, including Vietnamese and foreign standards (if any). When there is a new version of a technical standard replacing the old standard, the corresponding new standard must be applied.
This certificate supplements Certificate No. 162/GCN-BXD dated March 11, 2019 of the Ministry of Construction and is valid until March 11, 2024.