GB/T 38990-2020Waterborne epoxylite emulsified binder mixture for road engineering (English PDF)
道路用水性环氧树脂乳化沥青混合料
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
July 21, 2020
Implementation date
June 1, 2021
Scope
GB/T 38990-2020 is the English-translated version of 道路用水性环氧树脂乳化沥青混合料.
GB/T 38990-2020 is the Chinese national standard for the waterborne epoxy emulsified bitumen binder mixture used in road works, the cold mixture that combines bitumen emulsion with an epoxy resin system.
It sets the materials to be used and their requirements, the requirements for the mixture itself - composition, curing, strength and water stability - the inspection rules and the provisions on transport.
Road authorities, contractors and the laboratories that design the mix use it, since the epoxy binder is chosen where a cold-laid surfacing must carry heavy traffic. Issued on 21 July 2020, it has applied since 1 June 2021.
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Document preview — GB/T 38990-2020
National Standard of the People's Republic of China
- ICS
- 93.080.20
- Classification
- Q 20
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope4
- 2 Normative references4
- 3 Terms and definitions4
- 4 Materials5
- 5 Requirements6
- 6 Inspection rules8
- 7 Transportation10
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This Standard specifies materials, requirements, inspection rules and transportation for waterborne epoxylite emulsified binder mixture for road engineering.
This Standard is applicable to various grades of roads and urban road projects.
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 175, Common Portland Cement
GB/T 528, Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties
GB/T 1677, Determining the epoxy value of plasticizers
GB/T 1725, Paints varnishes and plastics - Determination of non-volatile- matter content
GB 8538, National Food Safety Standard - Methods for examination of drinking natural mineral water JTG E20, Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering JTG F40, Technical Specification for Construction of Highway Asphalt Pavements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply. emulsified binder shall be inspected before construction. They can be used after passing the inspection.
6.1.2 When the constructer or the supervisor unilaterally or both parties do not have the test conditions, both parties can negotiate to entrust third-party inspection.
6.2 Inspection classification
6.2.1 Exit-factory inspection
Exit-factory inspection shall, according to Table 4 and Table 6, be carried out to each batch of waterborne epoxylite emulsified binder slurry mixtures or waterborne epoxylite emulsified cold mix binder mixtures.
6.2.2 Type inspection
When the waterborne epoxylite emulsified binder slurry mixture or waterborne epoxylite emulsified cold mix binder mixture is mixed for the first time as well as when one of the following situations occurs during the construction process, type inspection shall be carried out according to Table 1, Table 2, Table 4 and
6.3 Batching and sampling
6.3.1 Batching
6.3.1.1 Products shall be sampled and tested in batches.
6.3.1.2 For products produced by the same project, the same raw materials, the same mix ratio and production process, per 3000t is one batch. If it is less than 3000t, it shall be regarded as one batch.
6.3.2 Sampling
6.3.2.1 Conduct sampling in the paving trough of the slurry seal car for waterborne epoxylite emulsified binder slurry mixture. It is better to conduct sampling on paver for waterborne epoxylite emulsified cold mix binder mixture.
6.3.2.2 Samples shall be kept in reserve when sampling. The number of retention groups of the sample shall be determined according to actual needs.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 22 pages — is available in the English PDF.
Referenced standards
Normative references
- GB 175Common portland cement
- GB/T 528Rubber, vulcanized or thermoplastic -- Determination of tensile stress-strain properties
- GB/T 1677Determinating the epoxy value of plasticizers
- GB/T 1725Paints, varnishes and plastics -- Determination of non-volatile-matter content
- GB 8538National food safety standard - Methods for examination of natural mineral drinking water
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