Codeofchina.com is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative.
This standard is drafted in accordance with the rules given in the GB/T 1.1-2009 Directives for standardization - Part 1: Structure and drafting of standards.
This standard was proposed by China National Light Industry Council.
This standard was prepared by SAC/TC 48 (National Technical Committee on Plastic Products of Standardization Administration of China).
Rigid Polyurethane Foam Board for Frozen Soil Subgrade (DLPU)
1 Scope
This standard specifies the terms and definitions, classification and labeling, technical requirements, test methods, inspection rules, and marking, transportation, packaging and storage of rigid polyurethane foam board for frozen soil subgrade (DLPU).
This standard is applicable to rigid polyurethane foam boards for road and railway subgrade in frozen soil area (hereinafter referred to as “DLPU”).
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2918-1998 Plastics - Standard Atmospheres for Conditioning and Testing
GB/T 6342-1996 Cellular Plastics and Rubbers - Determination of Linear Dimensions
GB/T 6343-2009 Cellular Plastics and Rubbers - Determination of Apparent Density
GB/T 8170-2008 Rules of Rounding off for Numerical Values & Expression and Judgment of Limiting Values
GB/T 8810-2005 Determination of Water Absorption of Rigid Cellular Plastics
GB/T 8811-2008 Test Method for Dimensional Stability of Rigid Cellular Plastics
GB/T 8812.1-2007 Rigid Cellular Plastics - Determination of Flexural Properties - Part 1: Basic Bending Test
GB/T 8813-2008 Rigid Cellular Plastics - Determination of Compression Properties
GB/T 10294-2008 Thermal Insulation - Determination of Steady-state Thermal Resistance and Related Properties - Guarded Hot Plate Apparatus
GB/T 10295-2008 Thermal Insulation - Determination of Steady-state Thermal Resistance and Related Properties - Heat Flow Meter Apparatus
GB 11121 Gasoline Engine Oils
GB/T 11547-2008 Plastic - Methods of Test for the Determination of the Effects of Immersion in Liquid Chemicals
GB/T 16422.3-2014 Plastics - Methods of the Exposure to Laboratory Light Sources - Part 3: Fluorescent UV Lamps
GB 17930 Gasoline for Motor Vehicles
GB 19147 Automobile Diesel Fuels
GB/T 20672-2006 Cellular Plastics Rigid - Determination of Compressive Creep under Specified Load and Temperature Conditions
GB/T 50082-2009 Standard for Test Methods of Long-term Performance and Durability of Ordinary Concrete
ISO 20394:2007 Thermal-insulating Materials - Determination of Freeze-thaw Resistance
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
rigid polyurethane foam board for frozen soil subgrade (DLPU)
rigid polyurethane foam boards for road and railway subgrade in frozen soil area
3.2
coefficient of variation
sample standard deviation divided by the sample mean
4 Classification and Labeling
4.1 Classification and designation
The products are classified into five categories according to compression strength, i.e. 200kPa, 300kPa, 400kPa, 500kPa and 600kPa, and the designation is composed of the initial letter of polyurethane in English, namely P, and the compression strength value of product.
Example: P400
Where,
P is the initial letter of polyurethane in English.
400 is the compression strength value of product.
4.2 Labeling
4.2.1 Labeling method
The product labeling is composed of product name abbreviation, product category and length×width×thickness.
□-□-□
4.2.2 Labeling example
P300 rigid polyurethane foam board for frozen soil subgrade with length, width and thickness of 2400mm, 1200mm and 50mm respectively is labeled as: DLPU-P300-2400×1200×50.
5 Technical Requirements
5.1 Appearance
The product shall be flat on the surface, straight on the cut surface and free of apparent damage affecting the use.
5.2 Specification and dimension & permissible deviation
5.2.1 Specification and dimension
See Table 1 for the main specification and dimension of product and other specifications are determined through negotiation of the supplier and the purchaser, however, the permissible deviation shall conform to the requirements specified in Table 2.
Permissible deviations of length, width and thickness as well as the diagonal difference of product shall conform to the requirements specified in Table 2.
Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Classification and Labeling 5 Technical Requirements 6 Test Methods 7 Inspection Rules 8 Marking, Transportation, Packaging and Storage Annex A (Normative) Test Method of Dynamic Load Fatigue
Codeofchina.com is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative.
This standard is drafted in accordance with the rules given in the GB/T 1.1-2009 Directives for standardization - Part 1: Structure and drafting of standards.
This standard was proposed by China National Light Industry Council.
This standard was prepared by SAC/TC 48 (National Technical Committee on Plastic Products of Standardization Administration of China).
Rigid Polyurethane Foam Board for Frozen Soil Subgrade (DLPU)
1 Scope
This standard specifies the terms and definitions, classification and labeling, technical requirements, test methods, inspection rules, and marking, transportation, packaging and storage of rigid polyurethane foam board for frozen soil subgrade (DLPU).
This standard is applicable to rigid polyurethane foam boards for road and railway subgrade in frozen soil area (hereinafter referred to as “DLPU”).
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2918-1998 Plastics - Standard Atmospheres for Conditioning and Testing
GB/T 6342-1996 Cellular Plastics and Rubbers - Determination of Linear Dimensions
GB/T 6343-2009 Cellular Plastics and Rubbers - Determination of Apparent Density
GB/T 8170-2008 Rules of Rounding off for Numerical Values & Expression and Judgment of Limiting Values
GB/T 8810-2005 Determination of Water Absorption of Rigid Cellular Plastics
GB/T 8811-2008 Test Method for Dimensional Stability of Rigid Cellular Plastics
GB/T 8812.1-2007 Rigid Cellular Plastics - Determination of Flexural Properties - Part 1: Basic Bending Test
GB/T 8813-2008 Rigid Cellular Plastics - Determination of Compression Properties
GB/T 10294-2008 Thermal Insulation - Determination of Steady-state Thermal Resistance and Related Properties - Guarded Hot Plate Apparatus
GB/T 10295-2008 Thermal Insulation - Determination of Steady-state Thermal Resistance and Related Properties - Heat Flow Meter Apparatus
GB 11121 Gasoline Engine Oils
GB/T 11547-2008 Plastic - Methods of Test for the Determination of the Effects of Immersion in Liquid Chemicals
GB/T 16422.3-2014 Plastics - Methods of the Exposure to Laboratory Light Sources - Part 3: Fluorescent UV Lamps
GB 17930 Gasoline for Motor Vehicles
GB 19147 Automobile Diesel Fuels
GB/T 20672-2006 Cellular Plastics Rigid - Determination of Compressive Creep under Specified Load and Temperature Conditions
GB/T 50082-2009 Standard for Test Methods of Long-term Performance and Durability of Ordinary Concrete
ISO 20394:2007 Thermal-insulating Materials - Determination of Freeze-thaw Resistance
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
rigid polyurethane foam board for frozen soil subgrade (DLPU)
rigid polyurethane foam boards for road and railway subgrade in frozen soil area
3.2
coefficient of variation
sample standard deviation divided by the sample mean
4 Classification and Labeling
4.1 Classification and designation
The products are classified into five categories according to compression strength, i.e. 200kPa, 300kPa, 400kPa, 500kPa and 600kPa, and the designation is composed of the initial letter of polyurethane in English, namely P, and the compression strength value of product.
Example: P400
Where,
P is the initial letter of polyurethane in English.
400 is the compression strength value of product.
4.2 Labeling
4.2.1 Labeling method
The product labeling is composed of product name abbreviation, product category and length×width×thickness.
□-□-□
4.2.2 Labeling example
P300 rigid polyurethane foam board for frozen soil subgrade with length, width and thickness of 2400mm, 1200mm and 50mm respectively is labeled as: DLPU-P300-2400×1200×50.
5 Technical Requirements
5.1 Appearance
The product shall be flat on the surface, straight on the cut surface and free of apparent damage affecting the use.
5.2 Specification and dimension & permissible deviation
5.2.1 Specification and dimension
See Table 1 for the main specification and dimension of product and other specifications are determined through negotiation of the supplier and the purchaser, however, the permissible deviation shall conform to the requirements specified in Table 2.
Table 1 Specification and Dimension In mm
Length L Width L Thickness H
1200, 1500, 1800, 2400, 3000, 3600, 6000 600, 1200 30, 40, 50, 60, 70, 80, 100
5.2.2 Permissible deviation
Permissible deviations of length, width and thickness as well as the diagonal difference of product shall conform to the requirements specified in Table 2.
Contents of GB/T 35453-2017
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification and Labeling
5 Technical Requirements
6 Test Methods
7 Inspection Rules
8 Marking, Transportation, Packaging and Storage
Annex A (Normative) Test Method of Dynamic Load Fatigue
