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NG28 provides on-site inspection services for thermal insulation systems related to building materials and construction projects. The tensile bonding strength of the system, the impact resistance of the system, the thickness of the insulation layer (core drilling method), the tensile strength of a single anchor, the tensile bonding of the base layer and the adhesive Bonding strength, concrete structure physical testing and supporting testing: adhesives, energy-saving materials.

NG28 provides testing services for lightning protection devices related to building materials and construction projects. Lightning protection refers to the adoption of certain methods and measures to avoid the harm to the human body and buildings caused by lightning. Lightning is a natural discharge phenomenon. Lightning strikes are natural disasters, which not only cause damage to equipment and housing facilities, but also cause fires and explosions, and may even harm people and animals. Lightning rods, lightning protection cables, lightning protection nets, lightning protection belts, and lightning arresters are all commonly used lightning protection devices. A complete set of avoidance devices include air-termination devices, down conductors and grounding devices, and lightning protection devices need to be tested on a regular basis.

Rebound method to detect concrete strength, core drilling method to detect concrete strength, post-anchorage inspection and drawing, concrete mass temperature measurement, concrete internal defects, steel protection layer thickness, steel spacing, number of steel bars, floor thickness, steel corrosion detection.

NG28 provides building curtain wall inspection services related to building materials and construction projects, testing the airtightness, watertightness, wind pressure resistance, and in-plane deformation properties of building curtain walls. The discontinuous curtain wall projects of the same unit should also be divided into separate inspection batches; for special shapes or special shapes The required curtain wall, inspection batch division is determined by the supervision unit (construction unit) and the construction unit through negotiation.

NG28 provides on-site inspection services for subgrade and pavement related to building materials and construction projects, including pavement thickness, compaction, flatness, deflection value, structural depth, anti-skid performance, pavement seepage coefficient, and on-site CBR value of soil foundation.

NG28 provides on-site drawing inspection services for facing bricks related to building materials and construction projects. Through the on-site drawing of facing bricks, the construction unit can effectively understand the construction quality, and can effectively avoid large-scale falling of external wall facing bricks during the later service life. Cause a safety incident.

NG28 provides geotechnical testing services related to building materials and construction engineering. The test has a very important role for construction projects. It is a method of construction project data collection. Its test results have a great impact on the quality and safety performance of the project. Therefore, the accuracy of the test data must be improved to ensure the project. Construction quality.

NG28 provides testing services for inorganic binders related to building materials and construction projects. Inorganic materials refer to mixing a certain amount of cement, lime, or industrial waste residues and other inorganic binders and water into crushed or undisturbed soil to obtain a mixture. After compaction and curing, check whether the compressive strength obtained meets the requirements of the material.

NG28 provides indoor environment testing services related to building materials and construction projects, mainly for testing the four parameters of formaldehyde, benzene, ammonia, TVOC, and radon in indoor ambient air, and testing whether their content reaches the limit of indoor environmental pollutants in civil construction projects.