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GB/T 45464-2025: Test method for modifier content of SBS modified asphalt for road engineering
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 45464-2025 | English | 199 |
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Test method for modifier content of SBS modified asphalt for road engineering
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GB/T 45464-2025
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PDF similar to GB/T 45464-2025
Basic data | Standard ID | GB/T 45464-2025 (GB/T45464-2025) | | Description (Translated English) | Test method for modifier content of SBS modified asphalt for road engineering | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q20 | | Classification of International Standard | 93.080.20 | | Word Count Estimation | 10,186 | | Date of Issue | 2025-03-28 | | Date of Implementation | 10/1/2025 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 45464-2025: Test method for modifier content of SBS modified asphalt for road engineering---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 93.080.20
CCSQ20
National Standard of the People's Republic of China
Styrene-butadiene-styrene block copolymer for road use
(SBS) Modified Asphalt Modifier Content Detection Method
Released on 2025-03-28
2025-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Symbols 1
5 Testing equipment and reagents 2
6 SBS modified asphalt sample 2
7 Detection steps and result calculation 2
8 Test Report 3
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China.
This document is under the jurisdiction of the National Concrete Standardization Technical Committee (SAC/TC458).
This document was drafted by. Chang'an University, Jiangsu Zengguang New Materials Technology Co., Ltd., Rizhao Transportation New Materials Group Co., Ltd.,
Henan Zhonggong Design and Research Institute Group Co., Ltd., Xi'an Northwest Civil Aviation Project Management Co., Ltd., Shenzhen Haichuan New Materials Technology Co., Ltd.
Co., Ltd., Gansu Dingxi Highway Development Center, CCCC Infrastructure Maintenance Group Co., Ltd., Dahao Municipal Construction Co., Ltd.,
Shaanxi Changdazhengtu Transportation Technology Co., Ltd., Northwest Civil Aviation Airport Construction Group Co., Ltd., Jingbo (Hainan) New Materials Co., Ltd.,
Shanxi Transportation Science Research Institute Group Co., Ltd. and Xi’an Municipal Road and Bridge Construction Group Co., Ltd.
The main drafters of this document are. Hao Peiwen, Zhuang Yuhua, Mou Jinwei, Hao Menghui, Zhang Xiyan, Wang Chun, Gao Yunlong, Wang Wei, Xu Jinzhi, Liu Na,
Ruan Fang, Zhang Zhengguo, Dong Yuming, Zhao Pu, Jiao Anqing, Zhou Qingyue, Li Shaohui, Chen Huowen, Zhang Zhenxing, Li Yong, Zhang Xiaohui, Qi Cong, Fan Yinghua,
Hao Yuhong and Zhang Gaofeng.
Styrene-butadiene-styrene block copolymer for road use
(SBS) Modified Asphalt Modifier Content Detection Method
1 Scope
This document describes the method for determining the content of SBS modifier in SBS modified asphalt for road use by chemical titration, including the testing equipment.
Reagents, SBS modified asphalt samples, test steps and result calculation, and test report.
This document is applicable to the detection of SBS modifier content in SBS modified asphalt for road use.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
JTGE20 Test procedures for asphalt and asphalt mixtures in highway engineering
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
SBS modifier styrene-butadiene-styrenemodifier
Styrene-butadiene-styrene block copolymer (SBS) additive to improve the pavement performance of petroleum asphalt.
3.2
SBS modified asphalt
Asphalt binder with improved performance by adding a certain proportion of SBS modifier, stabilizer or other additives.
3.3
SBS modifier content
The mass fraction of SBS modifier and road petroleum asphalt in SBS modified asphalt.
3.4
A modified asphalt sample with a known SBS modifier content prepared according to the SBS modified asphalt production process.
3.5
Unsaturation
The content of carbon-carbon double bonds in SBS modifier.
4 Symbols
The following symbols apply to this document.
A --- Unsaturation, the unit is grams per hundred grams (g/100g).
CSBS---The content of SBS modifier in SBS modified asphalt, expressed as percentage (%).
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