Research on Coarse Aggregate Gradation of SMA Mixture Influence with Material Properties

2013 ◽  
Vol 700 ◽  
pp. 179-182 ◽  
Author(s):  
Guang Pu Hao
Keyword(s):  
Material Properties ◽  
Coarse Aggregate ◽  
Engineering Application ◽  
Temperature Stability ◽  
Pavement Performance ◽  
Practical Application ◽  
High Temperature Stability ◽  
Aggregate Gradation ◽  
Country Road ◽  
Fruitful Research

SMA is made by a large number of coarse aggregate skeleton formed, so the coarse aggregate gradation on pavement performance of SMA effect. Since 80 time, SMA mixture in many European countries has been widely used. In recent years, our country road workers on SMA mixture also conducted very fruitful research, and started engineering application. In this paper, SMA mixture in practical application, through the coarse aggregate ratio changes as well as the volume and density of tests on high temperature stability influence made some experimental study.

Laboratory Study of Pavement Performance of Basalt Fiber-Modified Asphalt Mixture

2011 ◽  
Vol 266 ◽  
pp. 175-179 ◽  
Author(s):  
Yuan Xun Zheng ◽  
Ying Chun Cai ◽  
Ya Min Zhang
Keyword(s):  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Polyester Fiber ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
And Control ◽  
Temperature Crack

In order to discuss the effect of the basalt fiber on reinforcing pavement performance of asphalt mixtures, the optimum dosage of asphalt and fibers were studied by the method of Marshall test and rut test firstly. Then pavement performances of basalt fiber-modified asphalt mixtures were investigated through tests of high temperature stability, water stability and low temperature crack resistance, and compared with that of polyester fiber, xylogen fiber and control mixture. The testing results showed that the pavement performance of fiber-modified asphalt mixture are improved and optimized comparing with control asphalt mixture, and the performance of basalt fiber-modified asphalt mixture with best composition were excelled than those of polyester fiber and xylogen fiber.

Natural Mineral Fiber Improved Asphalt Mixture Performance

2014 ◽  
Vol 638-640 ◽  
pp. 1166-1170 ◽  
Author(s):  
Meng Hui Hao ◽  
Pei Wen Hao
Keyword(s):  
Low Temperature ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Temperature Stability ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Natural Mineral ◽  
Mineral Fiber ◽  
Modified Asphalt

Natural mineral fiber with good performances of mechanical properties and environmentally friendly, pollution-free especially have gradually aroused extensive concern. In order to improve the quality of asphalt pavement, explore the applicability of nature basalt fiber in enhanced asphalt mixture performance, this paper investigates two typical asphalt mixtures and contrastive studies pavement performance of asphalt mixture by high temperature stability, water stability, low temperature anti-cracking and fatigue performance between basalt fiber modified asphalt mixture and base asphalt mixture, and then study the basic principle of fiber reinforcing asphalt mixture. The research show that basalt fiber modified asphalt mixture has a better pavement performance than base asphalt mixture, its dynamic stability is 1.6 times than base asphalt mixture, low temperature anti-cracking performance increased by more 25% and fatigue life is more 2 times than base asphalt mixture. And the basalt fiber can be used in the road engineering as an additive material that enhances the comprehensive performance of asphalt pavement.

Research on Application of Warm Mix Asphalt Technology in Hot In-Place Recycled Engineering

2013 ◽  
Vol 361-363 ◽  
pp. 1655-1658
Author(s):  
Xiao Li Li ◽  
Qing Zhou Wang ◽  
Shu Yan Liu
Keyword(s):  
Asphalt Mixture ◽  
Temperature Stability ◽  
Warm Mix Asphalt ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Recycled Asphalt ◽  
Marshall Test ◽  
Recycling Technology ◽  
Research On Application

Because of the heating limitation of old pavement and the restriction of climate, the quality of hot in-place recycled pavement was different to control. The warm m,ix asphalt technology was introduced to improve the heterogeneity and compactness of the hot in-place recycled pavement and decrease its construction temperature. The compaction characteristics of warm in-place recycled asphalt mixture were analyzed and its molding temperature was determined through the Marshall test. The pavement performance of warm in-place recycled asphalt mixture was analyzed whose results indicated that the introduction of warm mix asphalt technology was able to improve the compactness, the high temperature stability and water stability of hot in-place recycled asphalt mixture and reduce the influence of environment over its construction quality. A warm in-place recycled engineering of Shian expressway was introduced to verify the feasibility of warm in-place recycling technology which demonstrated that the warm in-place recycling technology was able to improve the heterogeneity and compaction quality of the recycled pavement and weaken the environmental pollution.

Study of Road Property of Basalt Fiber Asphalt Concrete

2012 ◽  
Vol 238 ◽  
pp. 22-25 ◽  
Author(s):  
Yuan Zhao Chen ◽  
Zhen Xia Li
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Polyester Fiber ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Reference Mixture ◽  
Temperature Crack

In order to discuss the effectiveness of basalt fiber in reinforcing pavement performance of asphalt mixtures, the pavement performances of basalt fiber asphalt mixtures were investigated by tests of high temperature stability, water stability and low temperature crack resistance, and compared with the pavement performance of asphalt mixtures with polyester fiber and xylogen fiber, and that of reference mixture. The results show that pavement performance of fiber asphalt mixture are improved and optimized comparing with reference asphalt mixture, the performance of asphalt mixture with basalt fiber are excelled than those with polyester fiber and xylogen fiber while the dosage of fibers is keeping at the optimum.

Design of Rubberized Asphalt Concrete by Means of Coarse Aggregate Void Filling Method

2012 ◽  
Vol 463-464 ◽  
pp. 215-220
Author(s):  
Kuang Huai Wu ◽  
Guo Liang Yang ◽  
Ai Yu Zeng
Keyword(s):  
Asphalt Concrete ◽  
Coarse Aggregate ◽  
Asphalt Mixture ◽  
Aggregate Size ◽  
Temperature Stability ◽  
Maximum Aggregate Size ◽  
High Temperature Stability ◽  
Asphalt Rubber ◽  
Filling Method ◽  
Rubberized Asphalt Concrete

In order to find a convenient approach to design the mix of rubberized asphalt concrete (RAC) and make full use of the properties of RAC, a kind of RAC-13 (13 is the nominal maximum aggregate size of the mixture) was designed by means of coarse aggregate void filling method (CAVF). A series of conventional tests of asphalt mixture with five asphalt-rubber aggregate ratio(ARAR) were carried out to check the target mix design and evaluate the performance of RAC. Performance evaluation tests such as Marshall and submerged Marshall stability test, moisture damage test and wheel tracking test were included. Test results show that the high temperature stability, moisture susceptibility and road performance of RAC-13 designed with CAVF method are all favorable. The recommended optimum asphalt-rubber aggregate ratio(OARAR) is 7.1% under the condition of skeleton structure. CAVF is a good means for designing RAC to ensure its stone-on-stone contact structure.

Experiment Study of Influence Factors on High-Temperature Stability of Closely Gap-Graded Bituminous Mixture

2012 ◽  
Vol 535-537 ◽  
pp. 1755-1758 ◽  
Author(s):  
Rui Guo ◽  
Zhong Ju Feng ◽  
Ping Li
Keyword(s):  
High Temperature ◽  
Influence Factors ◽  
Temperature Stability ◽  
Asphalt Pavements ◽  
Optimal Dosage ◽  
High Temperature Stability ◽  
Bituminous Mixture ◽  
Aggregate Gradation ◽  
Study Results ◽  
Dosage Study

Rutting in asphalt pavements continues to create problems for pavement. The aim of this study was to analyze the influence of different gradation composition, asphalt dosage, temperature and dosage of anti-rutting agent on high-temperature stability of cosely gap-graded bituminous mixture. To achieve this objective, 171 different rutting specimens using different mix parameters were analyzed for their the high-temperature stability. The mix parameters include: three types of aggregate gradation, five types of asphalt dosage, four types of temperature and five types of anti-rutting agent dosage. Study results indicate that adding proper content of coarse aggregate can play occluding and wedging role in aggregate mixture. The optimal bituminous dosage in rutting test are lower 0.1%~0.3% than that in Marshell test. At 65°C, the high-temperature stability of the cosely gap-graded bituminous mixture is not able to meet the requirement of standards. The optimal dosage of anti-rutting agent are equal to 0.3% in case of no increasing bituminous dosage.

Mix Design of Sup-13 Mixed with TOR and Crumb Rubber Using Dry Process

2013 ◽  
Vol 368-370 ◽  
pp. 764-770
Author(s):  
Xing Long Zhu ◽  
Dean Jiang
Keyword(s):  
Failure Strain ◽  
Design Method ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Crumb Rubber ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Dry Process ◽  
Potential Disadvantage ◽  
Residual Stability

Pure crumb rubber asphalt mixture using dry process has certain requirement of mineral gradation with the potential disadvantage of uneven mixing under the traditional temperature. In this paper the gradation design of asphalt mixture Sup-13 mixed with TOR and crumb rubber using dry process was studied with the Superpave design method, pavement performance of asphalt mixture including high temperature stability, cracking resistance at low temperature and water stability was tested in the experiment. Results show that Superpave design method is suitable for the research on the asphalt mixture of TOR and rubber, with getting moving stability 3682 times/mm, failure strain 2573.8με, residual stability 84.8% and the ratio of freeze-thaw splitting 80.1%. The performance is so good to meet the requirements for asphalt pavement performance.

Research Application of Colored Asphalt Mixture Pavement

2014 ◽  
Vol 900 ◽  
pp. 459-462 ◽  
Author(s):  
Zhi Gang Xin
Keyword(s):  
Asphalt Mixture ◽  
Temperature Stability ◽  
Active Role ◽  
Social Benefits ◽  
Pavement Performance ◽  
Water Stability ◽  
High Temperature Stability ◽  
Research Application ◽  
Low Temperature Cracking ◽  
Technical Capability

This paper analyzes the pavement performance of colored asphalt mixture of its high-temperature stability, water, stability low-temperature cracking resistance, and color characteristics, etc.; evaluates the technical capability, economic and social benefits, discusses the constriction technology and points for consideration for its ratio design, mixing, spreading and rolling of colored asphalt mixture pavement, which play an active role on application, extension and development of this technology.

Pavement Performance Evaluation and Analysis on Different Cooling Ways of Asphalt Mixture

2013 ◽  
Vol 361-363 ◽  
pp. 1689-1692
Author(s):  
Yan Hai Yang ◽  
Xiao Xi Gao ◽  
Zhuo Liu ◽  
Yang Shen ◽  
Jing Xiong Gao
Keyword(s):  
Low Temperature ◽  
Energy Saving ◽  
Hot Mix Asphalt ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Economic Benefits ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Low Temperature Cracking ◽  
Road Materials

By adding Sasobit, DAT and BLT additives to reach the purpose of hot mix asphalt mixture construction temperature decreasing, achieve energy conservation and environmental protection. With an AC-13 SBS modified hot mix asphalt as reference, the high and low temperature performance and water stability of three energy-saving and environment-protecting road materials are evaluated through laboratory tests. The results show that compared with HMA, all the three kinds of energy-saving and environment-protecting road materials exhibited a significant increase by 8%-15% in high temperature stability. While the low temperature cracking resistance and anti-water damage performance of Sasobit mixture were decreased somewhat, little changes in these two aspects of the performance of the other two materials. Finally, analyses the economic benefits, and provide the basis for the choice of asphalt mixture cooling additives.

Study on Pavement Performance of High Volume Reclaiming Asphalt Mixture

2014 ◽  
Vol 1081 ◽  
pp. 260-264
Author(s):  
Wei Rong Huang ◽  
Ming Tan
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Crack Resistance ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
High Volume ◽  
Pavement Performance ◽  
Water Stability ◽  
High Temperature Stability ◽  
Temperature Crack

It was based on laboratory test, in order to study on the high temperature stability, water stability and low-temperature crack resistance of AC-16 reclaiming asphalt mixture with different proportion of old material, this test takes into account 9 kinds of these asphalt mixture. The results show, with the old material blending ratio increased, the high temperature stability of asphalt mixture changed for the better, water stability and low-temperature crack resistance deteriorated. The pavement performance meet the requirements of secondary road or less, when old material content is within 70%. The research results provide reference for the application of reclaiming asphalt mixture.

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