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    Home > Coatings News > Resin News > Epoxy floor coating construction standard

    Epoxy floor coating construction standard

    • Last Update: 2021-07-27
    • Source: Internet
    • Author: User
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    Preface

    With the development of modern industrial technology and production, the requirements for cleaner production are getting higher and higher.
    It is required that the workshop floor is corrosion-resistant, clean and wear-resistant, and the indoor air dust content is as low as possible, such as food, tobacco, electronics, and precision instruments.
    Clean workshops are required for instruments, medicines, medical operating rooms, automobiles, airports and other production sites

    .
    This is not only a demand for improving working conditions, but also a guarantee for the quality of modern products

    .
    At present, many clean workshop floors in foreign countries usually use a whole polymer surface layer, which basically uses a material called "self-leveling coating" as the main material.
    Generally, the chemical substrate of the coating is epoxy resin, so domestic It is generally called "epoxy self-levelling flooring", which is a kind of material with weak dust
    separation
    .
    Online coatingol.
    com
    .
    At present, it is accepted and used by many manufacturers and users in China, especially in the pharmaceutical industry.
    In 1996, the country began to implement GMP standards in the medical industry.
    One of the basic hardware levels is the production of clean floors

    .
    However, there is no uniform standard for the construction of epoxy floor coatings

    .
    This standard is specially formulated for standard construction .


    Chapter One General Provisions

    1 Introduction

    1.
    1 In order to improve the design and construction level of epoxy resin floor engineering, strengthen the quality control of the construction process, and ensure the quality of epoxy resin floor engineering, this standard is specially formulated

    .

    1.
    2 The epoxy resin ground project should be constructed in accordance with the design documents

    .
    When it is necessary to change the design, replace materials or adopt new materials during the construction process, the approval of the design department shall be obtained

    .

    1.
    3 The design, construction and quality acceptance of epoxy resin floor engineering shall not only meet the requirements of this standard, but also meet the requirements of relevant national standards and codes

    .

    2.
    area


    This standard applies to the design, construction and quality acceptance of epoxy resin floor engineering in new construction, reconstruction and expansion projects

    .
    Mainly require highly clean, beautiful, dust-free, sterile and anti-static electronics, microelectronics, communication products, computer production industries, large-scale precision instrument plants, parking lots and ramps, roads and bridges, sidewalks, swimming poolsides, auto repair plants , Food factories, etc.
    need ground

    .

    3.
    Normative references

    GB/T 50589-2010 Technical specification for epoxy resin self-leveling floor engineering

    JC/T 1015-2006 epoxy resin floor coating material

    JGJ/T 175-2009 Technical specification for self-leveling ground engineering

    JC/T 2217-2014 epoxy resin waterproof coating

    GB/T1630-1989 Nomenclature of epoxy resin

    GB/T13657—1992 Bisphenol A epoxy resin

    GB/T4612-1984 Determination of epoxy equivalent of epoxy compounds GB/T4613-1984 Determination of epoxy resin and glycidyl ether inorganic chlorine

    GB/T4618—1984 Epoxy resin and related materials-Determination of easily saponifiable chlorine

    GB/T1732-1993 Coating viscosity determination method

    GB/T2567-1995 General rules for the test methods for the mechanical properties of resin castings GB/T2568-1995 Tensile test methods for resin castings GB/T2569-1995 Compression test methods for resin castings GB/T2571-1995 Impact test methods for resin castings


    Chapter 2 Materials

    2.
    1 General rules

    2.
    1.
    1 The raw materials of epoxy resin floor engineering should have product quality certification documents

    .
    Its quality shall not be lower than the provisions of the current relevant national standards, and shall comply with the provisions of this code

    .

    2.
    1.
    2 The product quality certification documents shall include the following contents:

    1 Raw material quality certificate and material inspection report
    .

    2 Quality technical indicators and testing methods
    .

    3 Technical appraisal documents
    .

    4 Instructions for material usage
    .

    2.
    2 Epoxy primer

    2.
    2.
    1 The requirements of epoxy resin primer products should meet the requirements of Table 1

    .

    Table 1 Requirements for epoxy primer

    Serial number

    project

    Technical index

    1

    State in the container

    After mixing, there is no lumps, and it is uniform

    2

    Solid content /% ≥

    50

    3

    Drying time/h

    Surface dry ≤

    6

    Hard work ≤

    twenty four

    4

    7d tensile bond strength, MPa ≥

    2.
    0

    2.
    3 Self-leveling epoxy resin floor coating material

    2.
    3.
    1 The requirements for self-leveling epoxy resin floor coating materials should meet the requirements of Table 2

    .


    Table 2 Requirements for self-leveling epoxy resin floor coating materials

    Serial number

    project

    Technical index

    1

    State in the container

    After mixing, there is no lumps, and it is uniform

    2

    Appearance of coating film

    Flat, no wrinkles, pinholes, bubbles and other defects

    3

    Solid content,% ≥

    95

    4

    Fluidity, mm ≥

    140

    5

    Drying time, h

    Surface dry ≤

    8

    Hard work ≤

    twenty four

    6

    7d compressive strength, MPa ≥

    60

    7

    7d tensile bond strength, MPa ≥

    2.
    0

    8

    Shore hardness (D type) ≥

    70

    9

    Impact resistance, Φ60mm, 1000g steel ball

    No cracks and no peeling of the coating film

    10

    Wear resistance, g ≤

    0.
    15

    11

    Chemical resistance

    15% NaOH solution

    The coating film is intact, no blistering, no peeling, and slight discoloration is allowed

    10% HCl solution

    120#solvent gasoline

    2.
    4 Thin coating type epoxy resin floor coating material

    2.
    4.
    1 The product requirements of thin-coated epoxy resin floor coating materials shall meet the requirements of Table 3

    .


    Table 3 Material requirements for thin coating type epoxy resin floor coating

    Serial number

    project

    Technical index

    1

    State in the container

    After mixing, there is no lumps, and it is uniform

    2

    Appearance of coating film

    Flat, no brush marks, wrinkles, pinholes, bubbles and other defects

    3

    Solid content,% ≥

    60

    4

    Drying time, h

    Surface dry ≤

    6

    Hard work ≤

    twenty four

    5

    Pencil hardness, H ≥

    3

    6

    Impact resistance, Φ50mm, 500g steel ball

    No cracks and no peeling of the coating film

    7

    Wear resistance, g ≤

    0.
    20

    8

    7d tensile bond strength, MPa

    2.
    0

    9

    Water resistance

    The coating film is intact, no blistering, no peeling, and slight discoloration is allowed

    10

    Chemical resistance

    15% NaOH solution

    The coating film is intact, no blistering, no peeling, and slight discoloration is allowed

    10% HCl solution

    120#solvent gasoline


    Chapter 3 Design

    Section 1 General Provisions

    3.
    1.
    1 The epoxy resin ground engineering should be designed according to factors such as process, heavy load requirements, medium operating conditions and environmental conditions

    .

    3.
    1.
    2 Epoxy resin floor coating can be used in the indoor environment where wear resistance and cleanliness are required.
    When the indoor floor has heavy load and impact resistance requirements, epoxy resin self-leveling mortar floor material, epoxy mortar or dry type should be used.
    Epoxy mortar ground

    .

    3.
    1.
    2 When the epoxy resin floor structure is used in a complex medium environment, glass fiber reinforced materials should be used as the isolation layer

    .
    When the glass fiber material cannot meet the requirements of the medium environment, other reinforcing materials such as organic fiber can be used according to the test situation

    .


    Section 2 Construction Requirements

    3.
    2.
    1 When the epoxy resin floor engineering is applied to the surface of the concrete base, the concrete base should be cast in one time, and the strength level should not be less than C25

    .
    When the concrete base is used as the ground, it can be treated with φ≥6@150 two-way steel mesh at the same time

    .

    3.
    2.
    2 The epoxy resin floor structure shall meet the following requirements:

    1 The epoxy resin floor coating shall include the base coat, middle coat and top coat
    .

    2 The ground coating of epoxy mortar construction shall include base coat, middle coat and top coat
    .

    3 The epoxy resin self-leveling mortar floor coating shall include the base coat and the self-leveling mortar surface layer
    .

    3.
    2.
    3 The thickness of each layer of the epoxy resin floor structure should meet the requirements of Table 1

    .


    Table 1 The thickness of each layer of epoxy resin floor structure (mm)

    structure

    Undercoat

    Medium coating

    Top coat

    Total thickness

    Self-leveling ground

    Continuous film formation without missing coating

    0.
    5~1.
    5

    0.
    5~1.
    5

    1.
    0~3.
    0

    Resin mortar structure

    3.
    0~5.
    0

    4.
    0~7.
    0

    Self-leveling mortar structure

    3.
    0~5.
    0

    3.
    0~5.
    0

    Glass fiber reinforced layer

    1.
    0 (or felt cloth composite ≥ 2 layers)

    3.
    2.
    4 When used in a heavy-load or impact-resistant environment, the concrete base should be reinforced

    .

    3.
    2.
    5 The concrete bottom layer should be provided with a moisture-proof or waterproof layer

    .

      

    Chapter IV Construction

    Section 1 General Provisions

    4.
    1.
    1 The construction environment temperature should be 15℃~30℃, and the relative humidity should not be more than 85%

    .

    4.
    1.
    2 Before construction, construction organization design documents should be prepared

    .
    The construction organization design document shall include the following contents:

    1 Material configuration and construction process
    .

    2

    3

    4

    5

    4.
    1.
    3

    4.
    1.
    4 ,


    4.
    2.
    1 、,c25,150mm

    4.
    2.
    2 2m,2mm

    4.
    2.
    3 ,20mm,6%

    4.
    2.
    4 、、


    4.
    3.
    1 :

    1  ,

    2  ,

    3  ,

    4.
    3.
    2 :

    1  ,,

    2  ,

    4.
    3.
    3 :

    1  ,,

    2  ,

    3  ,

    4.
    3.
    4 :

    1  ,,

    2  ,

    3  ,

    4.
    3.
    5 24h,

    4.
    3.
    6 :

    1  ,

    2

    3

    4.
    3.
    7 ,4.
    3.
    6


     

    4.
    4.
    1  23℃±2℃,7d

    4.
    4.
    2  、

    4.
    4.
    3


     

     

    5.
    1.
    1 :

    1

    。30㎡,4;30㎡,10㎡1,30㎡,30㎡;3

    2  ,,30㎡,4;30㎡,10㎡1,30㎡,30㎡;3

    3  、50%,5;5200㎡,

    4  ,


    Ⅰ  

    5.
    1.
    2


    5.
    1.
    3 :

    1  、,、、、


    2  1.
    5MPa


    5.
    1.
    4 :

    1  、


    2  ,、、

    :1kg0.
    5m、1m,


    Ⅱ  

    5.
    1.
    5 、、,、


    5.
    1.
    6 1mm2


    5.
    1.
    7


    5.
    1.
    8

    :,


     

    5.
    2.
    1  、
    。,

    5.
    2.
    2  ,

    5.
    2.
    3 ,,,

    5.
    2.
    4  :

    1

    2  80%,

    5.
    2.
    5  ,

    5.
    2.
    6  ,:

    1 The factory certificate or re-inspection report of raw materials
    .

    2 Records of handover at the grassroots level
    .

    3 Intermediate handover or concealed engineering records
    .

    4 Repair or rework records
    .


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