Precautions in the construction of the hottest con

Precautions in the construction of concrete floor engineering

floor engineering refers to the special ground that can be used for various purposes as a follow-up of civil engineering. The floor has different requirements due to different scope of application, mainly including the requirements of high impact and high wear resistance for roadways, parking lots, logistics warehouses, etc; Requirements for anti oil seepage on the ground of machining workshop; Requirements for chemical production to resist chemical medium corrosion; Requirements for preventing electrostatic accumulation on the ground of computer control room, flour production dust, textile fiber dust, fuel oil, flammable and explosive dangerous goods storage warehouse; Clean ground requirements for electronic component production, operating room, food, medicine, precision machinery production and assembly areas, etc. To meet these requirements, it is mainly the standardized construction of steel construction enterprises. Experts said that in addition, the key to the quality of the flooring project is to pay attention to nine key aspects

the type of floor works can be divided into two categories according to materials: first, wear-resistant particle additive type, including non-metallic, metal and alloy particle additive type wear-resistant ground, which is applied to plants, parking lots, supermarkets, sidewalks and driveways, etc. this kind of works can be carried out at the same time in civil ground works; High molecular polymer type, including epoxy, polyurethane, vinyl ester, acrylate and polyurea type, can also be divided into water-based, solvent-based and solvent-free types. According to experts, it is suitable for construction under a variety of environmental conditions. It can be fiber reinforced or added with multi-layer composites such as wear-resistant fillers and electrostatic conductive agents, so that the ground materials have good properties such as oil permeability resistance, corrosion resistance, electrostatic conductivity, and its surface has hard or elastic properties, Suitable for mechanical scratch resistance or sports fields and other requirements

the quality of the flooring project should first grasp the construction technical conditions of the flooring project. Refer to GB code for quality acceptance of building floor engineering, GB code for design of building floor, gb50046 code for anticorrosion design of industrial buildings, GB code for construction and acceptance of building anticorrosion engineering, etc. For the construction of wear-resistant particle additive type ground engineering, the civil engineering ground should meet the code for acceptance of building ground engineering quality. The quality requirements of the ground engineering for the preliminary engineering include that the compressive strength of the civil engineering ground should not be less than 12MPa, the concrete strength of the iron chip cement surface cushion should not be less than C25, the surface of the preliminary engineering should be rough, clean and wet, there should be no ponding, chiseling or brushing the interface treatment agent on the polished base surface, etc. The high polymer ground engineering is characterized by the randomness of color, but the construction is limited by environmental conditions (temperature and relative humidity), and there are requirements for the quality (strength, appearance) of civil engineering in the early stage of the ground and the moisture content of the ground

the technical requirements and quality inspection of flooring Engineering are the second key to grasp. Experts said that the technical requirements and quality inspection of wear-resistant particle additive type ground engineering should strictly comply with gb50209-95 "countless trademarks, general special terms and acceptance specifications for the construction results of building ground engineering"; The engineering acceptance of gb50209-2002 code for acceptance of building ground engineering quality can refer to the allowable deviation and inspection method of oil proof surface coating. Technical requirements and quality inspection of high polymer ground, gb50209-95 code for construction and acceptance of building ground engineering, except 3 It is basically similar beyond the content of the article. The coating gloss, color deviation, surface hardness, adhesion, wear resistance and supervision of the on-site detectable data are available. The on-site samples are compared for future reference

the third key to grasp is the design and construction management of the terrace project. At present, the paint products and construction instructions can be obtained. It should be noted that the engineering categories listed by the construction enterprises closely follow the pace and needs of the development of modern industrial technology, and the contents regulated by the national standards have fallen behind the business scope of the enterprises. The issued building floor design specifications and building floor engineering quality acceptance specifications are difficult to guide and regulate the quality of construction. Experts said: polymer materials have developed from epoxy and polyurethane to acrylic and polyurea types with rapid curing of vinyl ester resin, and epoxy has developed from thin coating and mortar types to solvent-free self leveling and self leveling electrostatic conductive types; Although the technical standards have been formulated, they have not been promulgated and implemented, there are no standardized guidance for early management, no testing items and standards for project quality, and there are generally surface hardness, adhesion standards and testing methods. The national pharmaceutical industry meets the GMP requirements, and it is urgent to inspect and evaluate the quality of millions of square meters of ground engineering every year

norms and standards are very important for the guidance of the industry. Experts said that the main specifications are: GB code for anticorrosion design of chemical buildings, including 5.1.7.4 "waterproof or moisture-proof measures", 5.1.9 "drainage ditch or floor drain" and "slope"; Hg/t "Regulations for coating design of chemical architecture", including 3.0.2.1 "leveling", 5.2.5 "wet curing primer", 5.2.9 "alkali resistant primer", 5.2.10 "diluted varnish", "primer or finish coat"; GB code for construction and acceptance of building corrosion protection engineering, including article 3.1.1 "solid, dense" and "strength". These include concrete base treatment, block corrosion prevention, water glass corrosion prevention, resin corrosion prevention, asphalt corrosion prevention, polymer cement mortar corrosion prevention and paint corrosion prevention, and include ground construction environmental condition control, raw material quality requirements, material preparation The neutron measurement and control of the construction party focuses on the R & D and manufacturing method of power lithium battery physical safety performance testing equipment, quality inspection and acceptance, and many other provisions that guide the construction