Building materials are an integral part of the construction engineering entity. In the engineering industry, the quality of raw materials is the basis and decisive factor to control the quality of the project, and plays an important role in the overall quality of the construction project. After the construction materials that meet the relevant regulations enter the construction site and are qualified, the participating parties shall take the necessary control means and methods to control the construction technology, so that the overall construction quality of the project can be guaranteed. There are tens of thousands of building materials, each of which has its own properties. For these different types of building materials with different properties, it is necessary to clearly understand the items to be tested for each material, so that more accurate testing and quality control of building materials can be carried out. The testing of these materials should be carried out in strict accordance with the relevant regulations of the state and the industry.
There are a wide variety of building materials, which can be roughly divided into:
1. Inorganic materials, including metal materials (including ferrous metal materials and non-ferrous metal materials) and non-metallic materials (such as natural stone, soil-fired products, cement, concrete and silicate products, etc.);
2. Organic materials, including plant materials, synthetic polymer materials (including plastics, coatings, adhesives) and asphalt materials;
3. Composite materials, including asphalt concrete, polymer concrete, etc., are generally composed of inorganic non-metallic materials and organic materials.
According to the type of use, building materials can be divided into:
1. Structural materials, including wood, bamboo, stone, cement, concrete, metal, brick, ceramic, glass, engineering plastics, composite materials, etc.
2. Decorative materials, including various coatings, paints, coatings, veneers, colored tiles, glass with special effects, etc.;
3. Special materials refer to those used for waterproof, moisture-proof, anti-corrosion, fire prevention, flame retardant, sound insulation, heat insulation, heat preservation, sealing, etc.
Third, NOA | Noah provides material quality control service, including but not limited to:
1. Supplier factory audit
2. Factory sampling inspection before bidding
3. Factory sampling inspection before delivery
4. On-site inspection of material quality
5. Project structure entity detection
Supplier factory audit
As an indispensable part of enterprise manufacturing, supplier plays a particularly important role. The review of suppliers is helpful for enterprises to grasp the real situation of suppliers, including but not limited to product quality, integrity of system documents and working ability of suppliers. It plays an auxiliary role in judging the cooperation between the two parties in the future, and helps enterprises to choose suitable suppliers for themselves, so as to maximize the quality and economic benefits. Based on customer's demand, NOA | Noah develop comprehensive supplier factory inspection, including but not limited to the basic environment to help customers clear supplier factories, equipment, production lines, products, and the staff of information literacy training, etc.
Supplier factory audit includes:
1. Basic information of the factory
2. Material control
3. Check the main process in the workshop
4. Common standards
The common standards inspection is part of the supplier's factory audit. The inspection team rushed to the location of the supplier factory, conducted the site inspection of the factory environment, equipment and personnel as well as the relevant review and evaluation of documents, evaluated and scored the witnessed situation, notified the review situation and generated the review brief to provide to the customer.
5. Online product quality inspection
Conduct sampling quality inspection for different kinds of online products, check the corresponding factory testing documents provided by the suppliers, and verify whether the actual sampled products meet the quality standards on the testing documents.
6. Social responsibility
The inspection team reviews and evaluates the factory environment, equipment, personnel and documents through the situation witnessed in the on-site inspection of the factory and the interview of the on-site staff. It verifies whether the suppliers have various credit investigation problems, whether they are in the state blacklist of national enterprises, whether they employ or have employed underage labor, and whether they deliberately and malicious intimidate and threaten employees. Whether to deduct wages and bonuses, whether there is discrimination, whether to comply with laws and regulations and other related management systems and documents.
7. Other concerns
Review and evaluate the contents except the basic situation of the factory, materials, workshop production process, product quality, social responsibility, review the relevant document system and management records.
Factory sampling inspection before bidding
In the process of quality control, we can review and evaluate the actual situation of supplier factories for customers through spot inspection of supplier factories before bidding, provide customers with comprehensive and true supplier information, and help customers avoid potential risks.
Pre-tender factory spot inspection includes:
1. Building energy saving materials
The goal of building energy saving material testing is to test whether the quality characteristics of the supplier's building raw materials, semi-finished products and finished materials meet the national standards and meet the needs of construction projects before bidding.
Conventional testing items: compression strength, tensile strength, compressive shear adhesive strength, dry density, bulk density, thermal conductivity, water absorption, dimensional stability, wind pressure value, seismic performance, weather resistance, impact resistance, impermeability, wear resistance, fire reactivity
Applicable product scope: asbestos, sepiolite, mineral wool, glass wool, aluminum silicate fiber, carbon fiber, wood fiber, Cao fiber, diatom wood, calcium silicate, silicate composite coating, expanded perlite, expanded vermiculite, foam glass, foam asbestos, foam concrete, cork, foam plastic, foam rubber, metal foil
2. Water and electricity materials
The objective of hydropower material testing is to test whether the quality characteristics of semi-finished products and finished products of the supplier's hydropower materials meet the national standards and meet the needs of construction projects before bidding.
Routine test items:
(1) Physical properties: apparent density, light transmittance, rate fog, swelling specific gravity, hardness, rigidity, density, water absorption, dimensional stability, etc
(2) Mechanical properties: impact property, tensile property, bending property, electrical property, wear resistance, friction system, low temperature property, resilience property, tearing property, creep, vibration, impact, fatigue, stress relaxation, hydrostatic test, hydraulic impact test, etc
(3) Non-destructive testing: liquid penetration testing, magnetic particle testing, X-ray testing, ultrasonic testing, etc
(4) Electrical performance: conductor resistance, insulation resistance, voltage test, electrical performance test before and after aging, temperature rise, leakage protection experiment, etc
Applicable products: PVC-U pipe, PP-R pipe, PE pipe, PVC-U adhesive, valve, electrical pipe, electrical pipe accessories, wire trough, plastic pipe for communication pipe, wire and cable, household switch, household socket, etc
3. Civil construction materials
Civil construction materials are the cornerstone of the most important foundation of any construction project, is the most important link. Random inspection of civil construction materials of suppliers can make it clear whether they meet the needs of construction engineering, provide customers with comprehensive and true supplier information, and avoid potential risks.
Routine testing items: sand and stone technical index test, cement main technical index test, concrete admixture and admixture performance test, ordinary concrete performance test, building mortar performance test, block material quality test, building steel and reinforced weldment technical performance test, waterproof material performance test, building glass technical index and test, etc
Applicable product scope:
(1) Non-metallic materials: clay, gravel, stone, brick, tile, ceramic, glass; Cement, lime, gypsum, concrete, all kinds of glass and its products, inorganic coatings, asbestos, mineral wool, fiber products and lava products
(2) Metal materials: profiles, pipes, plates and metal products made of steel, non-ferrous metals and their alloys
(3) Organic materials: wood, bamboo, building plastics, organic coatings and adhesives, etc
(4) Composite materials: fiber reinforced plastics, laminate materials, etc
4. Decoration materials
The composition composition and quality performance of decoration materials always affect the health of the public in daily life, which is an important link to ensure the personal safety of customers in construction projects. The spot check of decoration materials of suppliers can make it clear whether they meet the standards of livable life and human health, and provide customers with comprehensive and true supplier information to avoid potential risks.
Factory sampling inspection before delivery
For customers, getting familiar with the factory conditions of suppliers before delivery can help to clarify the quality of goods, improve the reputation of customers' brands and economic benefits, and effectively avoid potential quality risks. According to customer requirements, NOA | Noah develop comprehensive factory spot check before delivery, including but not limited to the basic environment to help customers clear supplier factories, equipment, production lines, products, and the staff of information literacy training, etc.
Factory sampling inspection before delivery includes:
1. Building energy saving materials
The goal of building energy saving material testing is to test whether the quality characteristics of the supplier's building raw materials, semi-finished products and finished materials meet the national standards and meet the needs of building engineering before delivery.
Conventional testing items: compression strength, tensile strength, compressive shear adhesive strength, dry density, bulk density, thermal conductivity, water absorption, dimensional stability, wind pressure value, seismic performance, weather resistance, impact resistance, impermeability, wear resistance, fire reactivity
Applicable product scope: asbestos, sepiolite, mineral wool, glass wool, aluminum silicate fiber, carbon fiber, wood fiber, Cao fiber, diatom wood, calcium silicate, silicate composite coating, expanded perlite, expanded vermiculite, foam glass, foam asbestos, foam concrete, cork, foam plastic, foam rubber, metal foil, etc
2. Water and electricity materials
The objective of hydropower material testing is to test whether the quality characteristics of semi-finished products and finished products of the supplier's hydropower materials meet the national standards and meet the needs of construction projects before delivery.
Routine test items:
(1) Physical properties: apparent density, light transmittance, rate fog, swelling specific gravity, hardness, rigidity, density, water absorption, dimensional stability, etc
(2) Mechanical properties: impact property, tensile property, bending property, electrical property, wear resistance, friction system, low temperature property, resilience
(3) Tearing performance: creep, vibration, impact, fatigue, stress relaxation, hydrostatic test, hydraulic impact test, etc
(4) Non-destructive testing: liquid penetration testing, magnetic particle testing, X-ray testing, ultrasonic testing, etc
(5) Electrical performance: conductor resistance, insulation resistance, voltage test, electrical performance test before and after aging, temperature rise, leakage protection experiment, etc
Applicable products: PVC-U pipe, PP-R pipe, PE pipe, PVC-U adhesive, valve, electrical pipe, electrical pipe accessories, wire trough, plastic pipe for communication pipe, wire and cable, household switch, household socket, etc
3. Civil construction materials
Civil construction materials are the cornerstone of the most important foundation of any construction project, is the most important link. Random inspection of civil construction materials of suppliers can make it clear whether they meet the needs of construction engineering, provide customers with comprehensive and true supplier information, and avoid potential risks.
Routine testing items: sand and stone technical index test, cement main technical index test, concrete admixture and admixture performance test, ordinary concrete performance test, building mortar performance test, block material quality test, building steel and reinforced weldment technical performance test, waterproof material performance test, building glass technical index and test, etc
Applicable product scope:
(1) Non-metallic materials: clay, gravel, stone, brick, tile, ceramic, glass, cement, lime, gypsum, concrete, all kinds of glass and its products, inorganic coatings, asbestos, mineral wool, fiber products and lava products, etc
(2) Metal materials: profiles, pipes, plates and metal products made of steel, non-ferrous metals and their alloys
(3) Organic materials: wood, bamboo, building plastics, organic coatings and adhesives, etc
(4) Composite materials: fiber reinforced plastics, laminate materials, etc
4. Decoration materials
The composition composition and quality performance of decoration materials always affect the health of the public in daily life, which is an important link to ensure the personal safety of customers in construction projects. The spot check of decoration materials of suppliers can make it clear whether they meet the standards of livable life and human health, and provide customers with comprehensive and true supplier information to avoid potential risks.
Material quality inspection on site
There are many uncontrollable multilateral factors in an engineering project that cannot be anticipated and prepared in the plan, and the specific quality and performance of materials is one of them. In order to control, avoid and monitor these unpredictable problems, inspectors are required to carry out a variety of quality checks on materials and equipment on site. Such measures help to improve the quality and safety of engineering projects, while reducing construction errors and potential risks.
On-site inspection of material quality includes:
1. Material sealing sample management and inspection
The audit of the site material sealing management is helpful to improve the engineering side's management of the use and storage of materials, and is conducive to improving the quality assurance mechanism of engineering projects.
NOA | services include: Noah to the scene of the project material sample to review, if there is sample room building material; Whether to set up a dedicated position to manage the material sample sealing room; Whether the relevant material sealing system and sealing record ledger have been established; Proofread and screen the sealing label of sealed sample materials and the sealing ledger information recorded by field personnel.
2. Brand compliance check
In order to put an end to the three materials and unqualified materials into use and cause engineering accidents, it is particularly important to check the brand compliance of materials. On the one hand, it improves the source feasibility and quality assurance of engineering materials, and on the other hand, it can avoid hidden dangers of engineering mistakes and supplier traceability of failed materials in the construction process.
NOA | Noah provides services include: brand of project chooses the material review, to ensure the quality of the selected brand to party a's project requirements; Review of brand supplier and supply link; Corresponding brand material purchase record review, etc.
3. Sensory inspection of materials
Inspectors inspect the materials on the project site from the perspective of senses, and quickly make a preliminary judgment on different engineering materials from the appearance, color, size, dryness, hardness and flexibility of the materials, and quickly and effectively exclude the obviously unqualified materials from the project. Sensory inspection can also be for engineering equipment, auditors can compare and verify the specifications and models of the equipment and the requirements on the engineering drawings through sensory inspection, so as to preliminarily eliminate unqualified equipment. The convenience and rapidity of sensory detection enable the detection to be carried out at any time in the construction process, which can effectively reduce the possibility of applying unqualified materials and equipment in the project.
4. Field measurement inspection
The vast majority of engineering projects in the construction process will be divided into two groups at the same time, in this process if the lack of actual measured amount of engineering supervision personnel, then it is very likely to occur construction size error, direction deviation and other construction problems.
NOA | Noah inspectors to real-time supervision and monitoring of engineering construction project process, real-time supervise whether the result is consistent with the drawing requirements, coordinate with each unit construction progress, committed to circumvent the construction size and operating errors, improve the quality of engineering.
5. Material acceptance management
The verification of incoming materials is very important for the project. We need to ensure that the materials used in the project have corresponding quality inspection reports, their quality performance must meet the relevant national standards and regulations, and ensure that the materials provided by the supplier have no quality problems, so as to ensure that the project can meet the expected use requirements and safety life during construction and after completion. Therefore, material management inspection is indispensable.
NOA | Noah inspectors will enter the construction site engineering materials for acceptance, examination and check material certificate, the factory self-check report, the third party inspection report, the supplier's business credentials, in the material quantity and quality meets the engineering requirements, etc.
Project structure entity detection
The quality of the structural entity determines the overall quality of the construction project and has a direct impact on the safety and durability of the building. Therefore, it is very important to strengthen the structural entity detection and enhance the quality of structural entity. In structural entity detection, detection items and specific detection principles and methods should be clearly defined, and reasonable methods should be selected for different items to carry out entity detection, so as to improve the accuracy and ensure the safety of structural entity.
Project structure entity inspection includes:
1. Building energy saving materials
Building energy conservation refers to reducing energy consumption as far as possible under the condition of meeting the same needs or achieving the same purpose during the production of building materials, construction and use of buildings and structures.
Building energy conservation testing items include: thermal insulation system main components of material performance, external wall insulation system performance, building doors and Windows, heating residential building energy conservation inspection, building energy conservation engineering site inspection, external wall weather resistance detection
The main instruments and equipment of building energy conservation testing items include: dust particle counter, insulation system tester, door and window air tightness tester, insulation system tester, drawing tester, thermal conductivity tester, infrared camera
2. Civil building materials
Civil materials are the bricks and tiles of a building, but also an important line of defense to protect the safety of people's lives and property.
NOA | Noah provide civil construction materials testing include:
(1) Inorganic nonmetallic: Portland cement, masonry cement, sand for construction, gravel, light aggregate, concrete, steam pressurized concrete block, solid brick, porous brick, partition board, etc
(2) Polymer: elastomer modified asphalt waterproof coil, self-adhesive polymer modified asphalt waterproof coil, pre-paved waterproof coil, root puncture waterproof coil, water stop, etc
(3) Metal materials: hot rolled round steel bar, hot rolled ribbed steel bar, welded steel pipe, aluminum alloy building profiles, seamless steel pipe, steel-plastic composite pipe, etc
3. Decoration materials
The quality of decoration greatly affects the user's sensory experience. Therefore, for the sake of livable life and health, it is necessary to check and control the quality of decoration materials.
NOA | Noah provided by the decoration materials testing include:
(1) Board: joinery board, aluminum-plastic composite board, ceramic tile, natural granite building board, solid wood floor, veneer wood-based board, plywood, fiberboard, etc
(2) Coatings: interior wall coatings, exterior wall coatings, wood coatings, exterior wall flexible putty, waterproof coatings, etc
(3) Hardware sanitary ware: ceramic seal nozzle, stainless steel faucet, sanitary ceramics, shower shower, floor drain, etc
(4) Decoration auxiliary materials: silicone structural sealant, light steel keel, adhesive, etc
(5) Other categories: doors and Windows, bathroom furniture, hardware, carpet, leather, wallpaper, etc
Service process
Q&A
How to apply for approval? What if there are no items I need in the category list?
By clicking on the top right corner of the online consulting, NOA | Noah hospitality professionals will be with you. After the consultation, the two sides together to review the contract, after finish checking NOA | Noah will provide professional standards review documents for customer reference. If the items you need are not listed in the classified list, welcome to click the online consultation button, and our professional reception staff communication consultation.
What are the quality inspection and control measures of building engineering materials?
(1) Inspection before and quality control after the entry of construction engineering materials;
(2) Strengthen the professional ability of testing personnel;
(3) Strengthen the construction of the quality inspection system for construction engineering materials;
(4) Error control of building material testing.
In what cases should items for the structural performance of existing building structures be tested?
An item for the structural performance of an existing building structure shall be tested when:
(1) Safety evaluation of building structure;
(2) seismic evaluation of building structure;
(3) Reliability evaluation before building overhaul;
(4) Identification of buildings prior to change of use, renovation, addition of layers or expansion;
(5) Identification that the building structure should continue to be used after reaching the designed service life;
(6) Identification of buildings affected by disasters and environmental erosion;
(7) There is doubt or dispute about the engineering quality of the existing building structure.
What is the classification of building energy saving detection?
The classification of building energy efficiency testing includes laboratory and field testing, type testing and sampling testing. Building energy conservation testing is to use standard methods, suitable instruments and equipment and environmental conditions, by professional and technical personnel used in the energy saving building of raw materials, equipment, facilities and buildings to carry out thermal performance and thermal performance related technical operations, it is an important means to ensure the construction quality of energy saving buildings.
Our advantage
Authoritative qualification
NOA | Noah has China national accreditation supervision and administration commission (CNCA) approval (CNCA - R - 2002-051), and access to China's national inspection inspection agencies (CMA) aptitude, It has been approved by China National Accreditation Commission for Conformity Assessment (CNAS), International Accreditation Service Organization (IAS), UK Royal Accreditation Commission (UKAS), and Joint Accreditation System of Australia and New Zealand (JAS-ANZ). NOA | Noah has the general bureau of China's national market regulation, China special equipment inspection qualification examination organization, with China's national equipment supervision and engineering supervision qualification. NOA | Noah - DCI is the European commission CE directives notified body, NOA | Noah has international electrotechnical commission electronic components quality evaluation system (also), is China national import &export commodity inspection appraisal organization, is high-tech enterprises in Shanghai.
Improve performance, realize asset value appreciation, services throughout the value chain
From operation, design and whole life cycle of a security, NOA | Noah as independent third party inspection company, owns a large number of proficient in domestic and international standards and specifications, in the design, welding, NDT, painting, packaging and so on various areas experienced professional engineers and inspection team of experts, more than ten years of experience in the domestic market, Familiar with all aspects of the domestic industrial equipment supply chain, can timely provide you with the full life cycle of technical services and technical support services, combined with all kinds of product inspection, certification, testing, consulting, audit business, can provide you with a one-stop comprehensive service.
Quality, efficiency and service
NOA | Noah in more than 20 years of development has formed a mature solid operating system, we let the be familiar with the market regulations, test standard, test and has professional experience in industry technical experts, evaluation and design review, they ensure technical process to meet the requirements of domestic and international standard at the same time, accurate to the minutes of aging management way, To ensure that customers in the first time to obtain satisfactory service results, to ensure that customers in the market competition to seize the opportunity.
Service area
NOA | Noah inspection services currently covered Europe, Australia, Russia and parts of the Middle East and the vast majority of regions within China, NOA | Noah in different regions to ensure the consistency and consistency of customer service to eliminate a strange environment quality guarantee to customers and the impact of the project, Enable customers to participate in different national or global markets with perfect quality.
