Common ground practice of underground garage const

2022-07-22
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How many methods are there for the ground of underground garage? In the past, the problems existing in concrete pouring, especially in the ground of underground garage, are more prominent. These problems directly affect the quality of concrete and increase the construction difficulty and cost for the epoxy floor behind. In the past, the design of industrial floor and underground garage floor often used: concrete floor, cement mortar floor, epoxy floor, wear-resistant floor, terrazzo floor, etc. after we used the above floor for 1-3 years, there were different degrees of dust, sand and falling off, which affected the normal use of the floor. The main reasons for these problems are: the construction quality and the service life of the product itself. The following is our comparison of the performance of the ground practices of several major underground garages. I hope it will be helpful to you

how many methods are there for the ground of underground garage? In the past, the problems existing in concrete pouring, especially in the ground of underground garage, are more prominent. These problems directly affect the quality of concrete and increase the construction difficulty and cost for the epoxy floor behind. In the past, the design of industrial floor and underground garage floor often used: concrete floor, cement mortar floor, epoxy floor, wear-resistant floor, terrazzo floor, etc. after we used the above floor for 1-3 years, there were different degrees of dust, sand and falling off, which affected the normal use of the floor. The main reasons for these problems are: the construction quality and the service life of the product itself. The following is our comparison of the performance of the ground practices of several major underground garages. I hope it will be helpful to you

What are the ground practices of underground garage? first, epoxy floor

epoxy floor technology refers to coating epoxy resin paint on the solidified cement floor, with a coating thickness of about 1-5mm, forming a closed organic protective layer. Because epoxy resin is an organic substance, this protective layer has good chemical characteristics such as water resistance, oil resistance, acid and alkaline resistance, salt spray corrosion resistance, and is flat and seamless, easy to clean, easy to maintain. It is a long-term floor material widely used in modern industry, and is widely used in medicine, food (aseptic production), electronics, chemical industry (anti-static) and other industries. However, the organic protective layer has several fatal weaknesses:

1. Hardness and wear resistance: organic materials cannot be comparable with inorganic materials in physical properties, and the Mohs hardness of the hardest resin is 2-3. In production workshops, parking garages, manufacturing and other places, due to heavy mobile loads and frequent use, such as cars, forklifts, mobile trolleys, etc., the epoxy resin floor is often severely scratched, causing shelling and falling off

2. Service life: organic materials are high molecular polymers, which means that under normal conditions such as radiation, light and temperature, the polymer chain will break, which is often referred to as aging! The service life of the best epoxy resin material (epoxy self leveling) can reach 5-8 years, and the service life of the general industrial epoxy floor is about 3 years

II. Wear resistant floor

hard floor technology refers to: it is made by adding carborundum or other aggregates in the process of casting with cement or concrete and solidifying as a whole. The thickness of hardening layer is about 3-10mm. Due to the extremely high hardness of aggregates such as emery, the Mohs hardness of the hard floor is 6-7. There is basically nothing in common substances that can scratch its surface, so the hard floor is hard, wear-resistant, flat and seamless. In addition to being used as the floor of industrial plants, it can also be used as the floor of warehouses, garages, squares and other auxiliary facilities. However, the ground produced by this technology is made by using cement as adhesive to bond emery, so it also has the characteristics of cement products - a large number of pores left over after water evaporation are bound to form on the surface. These pores have two negative effects on the ground effect:

1. Diffuse reflection of light, which greatly reduces the gloss. If you don't wax and maintain, there will be no good visual effect

2. Absorbing sewage and dust is not conducive to creating a clean production environment and is not suitable for application in pharmaceutical and other industries

3. With the passage of time, the surface weathering of cement products occurs, resulting in dust and sand. The general service life is 5-8 years, and the short service life is 2-3 years

III. terrazzo floor

terrazzo is a kind of cement artificial stone, which has the advantages of low price, good overall performance, controllable shape and color, so it is widely used as ground material for public buildings, production workshops, etc. However, due to wear and stain infiltration and other reasons, its surface is quickly weathered, stripped and polluted, losing its due architectural process characteristics. The main means of maintaining terrazzo floor is daily cleaning, waxing and polishing. The operation is complex and the cost is high, resulting in rough and obsolete terrazzo surface, which makes terrazzo only be used as low-end products, which is obviously a hidden danger for creating a clean working environment

IV. concrete sealing and curing agent hard floor

concrete sealing and curing agent is an environmental friendly chemical building material, which can make up for the defects of cement product floors. It is applied to concrete floor, cement floor and terrazzo floor to form a 7-8mm protective layer on the surface, with a service life of more than 30 years

concrete sealing curing agent hard floor has the following characteristics:

1. High brightness: up to 90 degree gloss units, more than epoxy resin, equivalent to marble

2. High hardness: Mohs hardness is 8-9 (diamond Mohs hardness is 10)

3. Anti permeability: resistant to water, oil, weak acid and alkali, flat and seamless, easy to clean, easy to maintain

4. Long life: the service life is up to 30 years, providing 20-year quality assurance. This guarantee is beyond the reach of other floors

5. Wide range: renovate the old ground, which is incomparable between epoxy floor and wear-resistant floor

anti skid floor base treatment

1. Concrete floor. The concrete floor has high strength and durability, but the surface is prone to the phenomena of alkali efflorescence and excessive water absorption, which are the key factors affecting the quality of the floor. Therefore, it is recommended that the construction floor on the concrete floor should have sufficient drying time, generally more than 28 days, and the moisture content of the concrete base should not exceed 6%. The strength of the concrete base surface should reach above C25, and the ground leveling gap should not exceed 3mm

2. Stone floor. Ceramic tiles, granite, marble, terrazzo, etc. are all called stone floors. In order to improve the adhesion between the ground and the paint, it is suggested that the ground should be fully polished before construction to increase the roughness of the ground. In order to increase the service life of the ground, we usually wax and maintain it, but the floor wax will affect the construction of the floor, so we should clean the floor wax before construction. In addition, during the construction, the joints and depressions of the ground shall be filled and leveled with putty

3. Old ground. If there is any damage on the used old ground, it should be repaired. If the damaged area is large, it is recommended to clear the old ground and rebuild the floor

problems existing in the construction of underground garage

the ponding in the base course was not completely cleaned up before pouring, resulting in high local concrete moisture content. Although the concrete was vibrated and leveled according to the elevation standard, after the initial setting, the ground in the area with high moisture content sank and formed an arc, low-lying and uneven with the overall ground, affecting the overall visual effect of the epoxy floor

when pouring concrete, do not follow a certain trend, pouring by warehouse or jumping warehouse. During the subsequent pouring of the ground of the underground garage, the appropriate joint position was not selected, and the edge left after the previous pouring was not marked, cut and removed, so as to ensure the crack rules of the wear-resistant floor

after pouring concrete, it is simply leveled with scraper (trampling pollution in manual scraper construction forms a wave, thus reducing the flatness of concrete), and it is not leveled with roller or plane vibrator

editor's summary: the above is the relevant introduction of the underground garage ground practices, which are the construction practices of the garage ramp anti-skid ramp surface, hoping to help friends who need this! For more information, please continue to follow our website, and more wonderful content will be presented in the future. You can also go to Qijia mall to buy more products you like

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