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1、道路石油沥青技术指标分析（Technical index analysis of road petroleum asphalt）This paper contributed by zhangxin198302.Pdf document may at the WAP end of the browsing experience poor. Suggest you select TXT, or download the source file to the machine view.First (total 163rd) February 2004 Road EngineeringShanxi S
2、cience & Technology of CommunicationsSHANX I SC IENCE GY O F COMM & TECHNOLO UN ICAT I NS ONo. 1. FebAnalysis of road asphalt technical indexYu Wenjing, Zhang Xiaoyan, Kong Fansheng(Shanxi Transportation Research Institute, Shanxi Taiyuan 030006)In recent years, Chinas highway construction as the ce
3、nter (by the end of 2003 the national highway mileage will reach 30 thousand km), to obtain the rapid development of highway construction, highway asphalt demand is increasing year by year, the 2002 national road asphalt dosage is 8 million 200 thousand T, the domestic heavy traffic asphalt asphalt
4、4 million 600 thousand T, 1 million 400 thousand T, imported asphalt content 2 million 200 thousand T, the 2003 national road asphalt amount will be more than 9 million T. Road asphalt technical requirements of the Ministry of Communications the promulgation and implementation of the (hereinafter re
5、ferred to as the new standard) is to improve the asphalt quality standards for the correct understanding of the new standard of asphalt technical indicators, analysis research is necessary.The quality factors of using 1 decision of road asphalt technical indexes of the 1. factors and 1.1 road 1.1 lo
6、ad factorWith the increase of loading the increase of traffic volume and axle load, in order to reduce the pavement fatigue damage of pavement, require the use of reasonable consistency, asphalt material cohesion and better viscoelasticity. In the traditional technical indexes of asphalt, penetratio
7、n and ductility under different temperature conditions, the wax content project reflects on the adaptability of asphalt load factors. 1. 1.2 temperature factors of asphalt pavement under design load at high temperature, no plastic flow (upheaval, Che Zhe), low temperature does not produce thermal sh
8、rinkage crack and thermal fatigue cracking. In the traditional asphalt technology index, rut index of softening point, viscosity, 60 DEG C through the asphalt asphalt mixture of asphalt properties reflect the requirements of high temperature; the asphalt brittle point, wax content, asphalt mixtureRe
9、ceived date: 2003212201 yuan;Author: Yu Wenjing (1937-), male, Jiangsu Nanjing people, technical adviser, in 1955 graduated from the Nanjing highway engineering school, 1967 graduated from the Xian highway Zhang Xiaoyan (1970-), female, Shanxi Wuzhai, deputy director, senior engineer, in 1992 gradua
10、ted from the Xian Institute of highway; hole (1977-), male, prosperous Shanxi Jiexiu, assistant engineer, in 2000 graduated from the Xian highway university.1995-2004 Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved.Abstract: road use requirements and the production process of crude oil
11、and bitumen quality is an important factor to determine the technical indexes of asphalt. According to the comparison of test data in China have been carried out, to investigate the differences between the technical index of road asphalt at home and abroad, analysis of Chinas new road asphalt techni
12、cal requirements rationality. Keywords: asphalt; technical index;Classification analysis: U 414.75 document code: A article number: 100623528 (2004) 0120001205The low-temperature bending strain index to reflect the requirements of low-temperature performance of asphalt; penetration index P I reflect
13、ed by the temperature stability of the asphalt material; through the relationship between asphalt grading and climatic zoning reflects changes in temperature range of asphalt technical indicators. 1. 1.3 different types of pavement structure, pavement structure factors have different stress state an
14、d forming mechanism. With the increase of surface layer mixture design air voids (open graded O GFC design of void ratio is greater than 18%), requirements of asphalt adhesive force (60 C viscosity) stronger, softening point, viscosity and adhesion of higher. 1.4 factors and 1. water in order to avo
15、id the effect of water damage of asphalt pavement, the pavement should meet the requirements of overall dense water requirements, and the adhesion of asphalt and aggregate grade, mixture strength after immersion and freeze-thaw splitting test, immersion rutting test of asphalt film falling index to
16、ensure the water stability of asphalt materials. Aged 1. 1.5 construction and the use of asphalt asphalt heating factors and mixed temperature of mixture and construction of 160 to 165 DEG C, so the technical indexes of asphalt in a series of 163 C and H (T FO T) film heating aging characterization
17、of asphalt materials after the possibility of asphalt sample related technology indicators of the 5. The asphalt material used in aging interaction with air, ultraviolet, water, mainly affect the asphalt pavement surface, the traditional asphalt technical standards are not included in the relevant i
18、ndicators, the American PG standard column pressure aging (PAV) test project. Suitable for road asphalt 1.2 factors of crude oil refining crude oil quality, usually containing alkyl and ring2?Shanxi traffic science and technology in 2004 first1.3 asphalt production process factors 1. 3.1 distillatio
19、nIntermediate base crude oil wax content is low, in recent years in China with an annual output of about 160 million T crude oil, crude oil imports of about 40 million T, which made the oil source properties suitable for production of road asphalt as listed in table 1.Table 1 China suitable for road
20、 asphalt production of crude oil is mainly the nature of the project density (20 C) g? Cm 3 viscosity (50 C) mm 2? S- 1 m KO H acid G? G - 1 point C char% ash% penetration point C saturates aromatics% asphaltene colloidal wax the content of sulfur content% ammonia content% Karamay Liaohe oilfield (J
21、iangsu, ur Shanjiasi Bohai Sui (Huan Xiling) red mouth, 36- 1 nine 0.962 0.941 0.975 0.9598 339.65631 area) 653.5543 3.12 4.64 3.61139132176144 7.51 7.04 12.4 8.98 0.024 0.058 0.385 0.019 - 19 - 20 - 12 - 235.3 25.2 37.9 18.7 22.8 21.44 1.5 0.49 1.84 1.95 1.5 1.42 1.85 2.78 0.24 0.34 0.31 0.13 0.42T
22、he chemical components of the appropriate crude oil distillation distillationreduced pressure directly (straight asphalt). Road asphalt production qualified 1. 3.2 oxidation method after distillation residue or soft asphalt, by blowing air, adjust the asphalt colloid structure and composition, to me
23、et the requirements of technical standards. 1. the 3.3 solvent removal method using light oil asphalt and reducing solvent from the wax content, to produce qualified asphalt.The 1. and 3.4 harmonic methodThrough different crude oil or crude oil processing product deployment, change of asphalt compon
24、ent, which meet the requirements. In the above 4 kinds of production process, the production of a single distillation process of asphalt, the general low cost, stable performance. The main asphalt refinery asphalt in our production process, production capacity and oil conditions as listed in table 2
25、.Heavy traffic asphalt production capacity of T million of crude oil imports 40 crude oil imports 30 crude oil imports 10 in Huanxiling oil mixture of 80 crude oil imports 60 Xinjiang, 30 Xinjiang Changqing Oil No. 0, No. nine and Karamay No. 0 Xinjiang District 130 heavy crude oil 10 LIN-SHANG crud
26、e oil 10, oil 25, Jinzhou orimulsion oil Bohai Oil 30, Bohai Orimulsion Oil 30 Bohai 150 Bohai Suizhong Suizhong oil 36- oil 36- 170 Bohai Suizhong 120 Bohai Suizhong oil 36- oil 36- 150565 raw materialsTable 2 the domestic production of heavy traffic asphalt refinery plant in trademark production p
27、rocess of distillation, distillation, oxidation, oxidation of solvent distillation, distillation, oxidation and oxidation distillation distillation, oxidation, solvent distillation, oxidation distillation and distillation, oxidation, oxidation, and solvent distillation, distillation, oxidation and o
28、xidation distillation, oxidation distillation, distillation, oxidation, oxidation, oxidation and oxidation distillation distillationQilu Shengli Refinery of Qilu Petrochemical Industries Co Maoming Petrochemical Co refinery of Nanhai petrochemical plant in Guangzhou petrochemical plant of Liaohe Pet
29、roleum Exploration Bureau of Huanxiling oil chemical plant in the East China Sea Lanzhou Zhenhai Refinery flying Xinjiang Petroleum Management Bureau of Karamay refinery pterosaur Dushanzi refinery refinery of Guangdong petroleum Jinan Tianshan rich fuel company rich Jiangyin Hing Hing asphalt plant
30、 Qinhuangdao petroleum chemical plant deer brand Panjin northern asphalt Co. Ltd., CNOOC Ltd. Qingdao Guangyuanfa thoroughfare asphalt asphalt plant in Taizhou petrochemical plant in Binzhou chemical plant in the total1.4 asphalt modification factorsWith the rapid development of the technology of as
31、phalt pavement, in order to meet the needs of heavy load, environmental protection and traffic safety, open graded, semi open gradation asphalt layer, application layer wear, requirements of asphalt has stronger cohesion and adhesion, and have better temperature stability. The asphalt material singl
32、e has been unable to meet the needs of the development of modified asphalt modified asphalt application generally increased, technical indicators not only increased the adhesion, toughness, elastic recovery test items, softening point, viscosity and ductility at low temperature of 60 DEG C and other
33、 indicators should be a substantial adjustment, heat aging conditions from 163 DEG C 5, h to 185 DEG C, 2.5 h. Chemical composition of bitumen modification effect depends on the matrix asphalt and modifier and compatibility, and related content and production of modifier and process. The requirement
34、s of the asphalt modified asphalt,And the development of the different technology parameters of asphalt is the need to explore the issue.2 foreign asphalt grading standardThe current international road asphalt grading standards there are 3 kinds of methods: classification standard mainly adopts 25 C
35、 national penetration grade in Europe and Japan, America, and 60 DEG C, America, Australia and Canada, viscosity grade road performance of PG grade beauty 2.1 American road asphalt grading index of American road asphalt 3 grading method of GM, and the penetration grading (A STM D 946- 99 (A), STM D
36、3381 viscosity grade (99), grade (A STM D 6373 - 99), AA SH TO PG PP 6). 2. 1.1 (A C) the viscosity grade by 60 DEG C of different asphalt asphalt viscosity is divided into six levels (table1995-2004 Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved.In 2004 firstYu Wenjing, such as: the i
37、ndex analysis of road bitumen Technology3?3), at a temperature of 60 DEG C viscosity under the same conditions for 135 DEG C sticky asphaltT FO T 60 C 25 C asphalt viscosity and ductility control, detectionC, penetration, and were divided into two categories. The A C 25 index of softening point, wax
38、 content index, index of the asphalt agingA C- 2.5 A B 250 A C- 5 A + 5012580220200163 B 500 + 100175110140120177Relatively few orders.Table 3 the AST D viscosity grade 3381- 99 road asphalt (Tables 1 and 2 with M) test viscosity (60 C) Pa? S viscosity (135 DEG C), not less than CST penetration (25
39、C), not less than DMM flash point, not less than C solubility, viscosity (not less than 60 DEG C%), not less than Pa? S ductility (25 C), not less than cmA C- 10 A B 1000 T FO + 2002501508070219 T C- 20 A B 50007550 A 2000 + 400300210604099.01 250100250010000502 1500040200002510 A C- 30 A 3000 + 600
40、35050232 A C- 40 A B 4000 + 80040030040202. 1.2 PG performance indexThe strategic highway research program (SHR P) in 1987 to 1993 of 5 A on the road to high and low temperature fatigue according to the asphalt pavement aging adaptability and performance requirements, the performance of asphalt (PG)
41、 grading standards (Table 4). The standard completely abolished the traditional asphalt by penetration, viscosity classification concept, based on the dynamic shear test, calculate the original asphalt, FO asphalt T samples to satisfy T shear rheology strength of 3 G sin? And the temperature of asph
42、alt will be divided into 7 levels according to the adaptation to high temperature; T FO T + PAV samples meet the temperature creep stiffness and direct tensile failure strain index, and the asphalt is divided into a number of low temperature adaptation level, which will be by the use of asphaltLevel
43、PG4640 3446101622Can be divided into 37 temperature level. TwoThe 2 European standard EU countries will according to road asphalt penetration is divided into 9 levels (Table 5). In the EU standard, reflecting the high-temperature performance indexes of asphalt softening point, dynamic viscosity and
44、kinematic viscosity C C and other indicators reflect the low temperature performance of asphalt 60135 is brittle point and wax content index, and by 2.2%, 5% will allow the wax content of asphalt is divided into two categories. Reflects the asphalt heat aging performance index R 4. T FO T, the quali
45、ty changes of residual penetration and softening point variation index of temperature susceptibility of asphalt the penetration index P I value control, P I value is - 1.5 + 0.7. Table 4 SHRP asphalt binder specification (AST D 6373- 99) MPG5228 3440461622 PG5828 34401016 PG6422 283440An average of
46、7 d the highest pavement design temperature minimum pavement design temperatureMinimum flash C T48 viscosity maximum 3 Pa? S A STM D test temperature 4402 T P5 3 G sin dynamic shear test temperature? A minimum of 1 kPa (10 rad s) C physical hardening index H% weight loss, maximum dynamic shear T P5
47、3 G sin? 2.20 kPa minimum temperature test (10 rad s) CLess than 46 less than 52 less than 58 less than 64 greater than greater than greater than greater than greater than greater than greater than greater than greater than greater than greater than - 34 - 16 - 22 - 10 - 16 - 22 - 28 - 34 - 40 - 46
48、- 16 - 22 - 28 - 34 - 40 - 10 - 16 - 22 - 28 - 34 - 40 of the original 230 asphalt1355864Forty-sixFifty-twoPresentation1.005864R T FO T asphalt residuesForty-sixFifty-twoPAV 9016131072522100 19161331282510022 1916 asphalt residuesPAV aging temperature dynamic shear T P5 3 G sin? 5000 kPa maximum temperature (10 rad s) C T P1 S maximum creep stiffness 300M Pa m minimum 0.30 test temperature direct tensile failure strain T P3 minimum 1% test temperature (1. 0mm m in) C907TenFourTwenty-fiveTwenty-twoNineteen- 24-30 - 360- 6 - 12 - 18 - 24 - 30 - 36 - 6 - 12 - 18 - 24 - 300-