GB/T 45464-2025Test method for modifier content of SBS modified asphalt for road engineering (English PDF)

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.

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 (%).