Temperature stress in asphalt pavement

2014 ◽  
pp. 115-119
Keyword(s):  
Temperature Stress ◽  
Asphalt Pavement

Study on Low Temperature Performance of SBS Modified Asphalt and its Mixture

2014 ◽  
Vol 587-589 ◽  
pp. 1332-1336
Author(s):  
Jun Qing Chen ◽  
Ai Jun Li ◽  
Mei Qian Jin ◽  
Min Nan Zheng ◽  
Wan Yi Yang
Keyword(s):  
Tensile Strength ◽  
Low Temperature ◽  
Temperature Stress ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Low Temperature Cracking ◽  
Low Temperature Performance ◽  
Sbs Modified Asphalt

Prone to low temperature cracking of asphalt pavement problems in cold areas, testing BBR on 70# base asphalt and 4 kinds of different dosage of SBS modified asphalt, testing TSRST on their mixture to appraisal the low temperature performance of SBS modified asphalt mixture. Results show that compared with the temperature stress of internal cracks of base asphalt and SBS modified asphalt mixture not rise significantly. But the stress of SBS asphalt mixture growing slow and the temperature of cracking reduce obviously; it means the low temperature performance improved. This shows that SBS improves the toughness and reduced the modulus of asphalt mixture in low temperature, rather than increasing the tensile strength of mixture specimens.

Numerical Simulation of Temperature Stress on Asphalt Pavement of Concrete Bridge Deck in Cold Region

2008 ◽  
Vol 385-387 ◽  
pp. 597-600 ◽  
Author(s):  
Hong Wang ◽  
Shao Peng Wu ◽  
Bo Li ◽  
Cong Hui Liu
Keyword(s):  
Temperature Stress ◽  
Asphalt Pavement ◽  
Element Model ◽  
Concrete Bridges ◽  
Concrete Bridge ◽  
Seasonal Temperature ◽  
Cold Region ◽  
Stress Variation ◽  
Low Temperature Cracking ◽  
Dimensional Finite Element

Flexible pavement plays an important role in the primary concrete bridges at present. However, climate environment, to which pavement is exposed, significantly impact pavement stability and long-term performance. Especially, low temperature cracking of asphalt pavement in cold region is a common existing problem. In order to improve the pavement’s crack resistance it is necessary to predict the temperature stress distribution within the asphalt layers. A two-dimensional finite element model of a concrete bridge in thermal and thermal-structural couple analysis is developed to predict temperature and temperature stress variation of asphalt layers in cold region. The temperature stress variation is analyzed at seasonal temperature, different cooling rate and the different thickness of asphalt layers. The model considers a set of primary thermal environmental conditions. Ultimately, the model is aimed at providing pavement engineers with an efficient computational tool that attempts to increase the prediction accuracy of temperature in asphaltic pavement of cold region for more reliable pavement design.

Dynamic behavior of asphalt pavement structure under temperature-stress coupled loading

2013 ◽  
Vol 53 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Qiang Xue ◽  
Lei Liu ◽  
Ying Zhao ◽  
Yi-Jun Chen ◽  
Jiang-Shan Li
Keyword(s):  
Dynamic Behavior ◽  
Temperature Stress ◽  
Asphalt Pavement ◽  
Pavement Structure

Cracks Resisting Mechanism Analysis of Large Stone Mixture Base Based on Mechanics Calculations

2013 ◽  
Vol 723 ◽  
pp. 729-736
Author(s):  
Hong Zhi Li
Keyword(s):  
Temperature Stress ◽  
Coupling Effect ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Element Model ◽  
Stress And Strain ◽  
Mechanism Analysis ◽  
Large Stone ◽  
Pavement Structure ◽  
Pavement Structures

In order to study the cracks resisting mechanism of large stone asphalt mixture base, a multi-layer elastic theory program was used to calculate the loading stress in different pavement structures. Then a Finite Element model was established based on a twinkling heat conduct hypothesis to calculate temperature stress and strain of pavement structure when temperature dropped. Finally, the stress and strain of all the structural layers was calculated considering the coupling effect of loading and temperature. It is found that temperature stress which is caused by temperate quick dropped is far more lager than loading stress cause by standard loading, while considering the co-effect of vehicle loading and temperature quickly dropped. Thus it is revealed that cracking in pavement is mainly caused by temperature quickly dropped. By contrast, it is found that pavement stress and strain caused by loading and temperature of the structure with asphalt macadam mixture (ATB30) base are less than that of the conventional semi-rigid pavement. Finally, an asphalt macadam mixture base applied in asphalt pavement structure is believed to be an efficient way in reducing asphalt pavement cracking.

3D Multiscale Modeling of Asphalt Pavement Responses under Coupled Temperature–Stress Fields

2022 ◽  
Vol 148 (3) ◽  
Author(s):  
Yiren Sun ◽  
Zhuang Zhang ◽  
Hongren Gong ◽  
Changjun Zhou ◽  
Jingyun Chen ◽  
...  
Keyword(s):  
Temperature Stress ◽  
Multiscale Modeling ◽  
Asphalt Pavement ◽  
Stress Fields

Analysis of Influence Factors of Temperature Stress for Open-Graded Large Stone Asphalt Mixes of Asphalt Pavement

2011 ◽  
Vol 52-54 ◽  
pp. 974-977 ◽  
Author(s):  
Hong Bing Guo ◽  
Shuan Fa Chen
Keyword(s):  
Finite Element ◽  
Temperature Stress ◽  
Asphalt Pavement ◽  
Influence Factors ◽  
Design Parameters ◽  
Rigid Base ◽  
Asphalt Mixes ◽  
Finite Element Software ◽  
Large Stone ◽  
Test Road

The reflective cracking is one of the main damages of semi-rigid base asphalt pavement and rigid base asphalt pavement, how to control its emergence and development is still a major problem for road engineering. At present, researches on mechanical behavior of Open-graded Large Stone asphalt Mixes (OLSM) in China almost remain in the test road observations, very few study it from the point of the finite element theory. Aiming at this problem, a method of using OLSM as the cracking alleviation layer is proposed. The calculation principles of temperature stress of lean concrete base asphalt pavement with OLSM has been introduced, on the basis of the finite element software of ABAQUS, 3-D Finite Element Method (FEM) is used to analyze temperature stress for OLSM of asphalt pavement, the influence rule of pavement design parameters for its temperature stress has been discussed, and the theoretical basis for structural design of asphalt pavement with OLSM has been found.

Viscoelastic Analysis of the Low-Temperature Anti-Cracking Performance of SBR Modified Asphalt Mixtures

2011 ◽  
Vol 239-242 ◽  
pp. 2919-2925 ◽  
Author(s):  
Min Jiang Zhang ◽  
Xing Hua Jiao ◽  
Wen Bo Zhang ◽  
Li Ping Zhang
Keyword(s):  
Low Temperature ◽  
Temperature Stress ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Relaxation Modulus ◽  
Asphalt Mixtures ◽  
Viscoplastic Material ◽  
Modified Asphalt ◽  
Viscoelastic Parameters ◽  
Environment Temperature

Asphalt mixture is a kind of typical elastic-viscoplastic material. Environment temperature and loading condition will greatly affect its performance. As the temperature falls, asphalt pavement will engender a shrinkage deformation under the action of temperature stress. When the accumulated temperature stress exceeds tensile strength, the asphalt pavement will be cracked. Based on the results of the bending creep test in low temperature, the Burgers model was established and the viscoelastic parameters in the model were given, and the relaxation modulus of asphalt mixture was also determined in this paper. The study indicated that SBR modified asphalt mixtures have the advantage over common asphalt mixture in low-temperature performance.

Temperature Stress Analysis of Concrete Overlay on Old Asphalt Pavement

2011 ◽  
Vol 255-260 ◽  
pp. 3416-3420
Author(s):  
Lian Yu Wei ◽  
Kai Wang ◽  
Shi Ning Li ◽  
Shi Bin Ma ◽  
Yang Feng Wu
Keyword(s):  
Finite Element ◽  
Temperature Stress ◽  
Asphalt Pavement ◽  
Three Dimensional ◽  
Theoretical Principle ◽  
Factors Affecting ◽  
Finite Element Software ◽  
Rigid Pavements ◽  
Base Course ◽  
Three Dimensional Finite Element

Temperature is one of the most important factors affecting the design and performance of both flexible and rigid pavements. The functional as well as the structural performance of flexible and rigid pavements is highly dependent on the temperature regime to which these pavements are exposed. Temperature variations within pavement structure contribute to distress and possible failure of that structure. According to pavement temperature stress calculation principle, based on general finite element software ANSYS, the paper adopt three-dimensional finite element method analysed temperature stress in concrete overlay on old asphalt pavement,in which discussed influence law of overlay thickness and modulus, equivalent rebound modulus on base course top and overlay structure parameters to temperature stress, providing theoretical principle and basis for old asphalt concrete pavement overlay method base on reliability.

Sign in / Sign up

Export Citation Format

Share Document