Cyclic low-temperature cracking resistance of structural steels and welded joints in metal structures

1990 ◽  
Vol 22 (10) ◽  
pp. 1388-1393
Author(s):  
V. N. Pustovoi
Keyword(s):  
Low Temperature ◽  
Welded Joints ◽  
Structural Steels ◽  
Cracking Resistance ◽  
Metal Structures ◽  
Low Temperature Cracking

Evaluation of low-temperature cracking resistance diagrams of steels used in the oil and gas industry

2017 ◽  
pp. 116-119
Author(s):  
R.S. Zaynullin ◽  
◽  
R.A. Kharisov ◽  
A.N. Muhametzyanov ◽  
◽  
...  
Keyword(s):  
Low Temperature ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Cracking Resistance ◽  
Gas Industry ◽  
Low Temperature Cracking

scholarly journals Evaluating the effect of asphalt binder modification on the low-temperature cracking resistance of hot mix asphalt

2019 ◽  
Vol 11 ◽  
pp. e00238 ◽  
Author(s):  
B.B. Teltayev ◽  
C.O. Rossi ◽  
G.G. Izmailova ◽  
E.D. Amirbayev ◽  
A.O. Elshibayev
Keyword(s):  
Low Temperature ◽  
Hot Mix Asphalt ◽  
Asphalt Binder ◽  
Cracking Resistance ◽  
Low Temperature Cracking

Research on the low-temperature cracking resistance of epoxy asphalt mixtures for airport runways

2015 ◽  
pp. 89-92
Author(s):  
Jianming Ling ◽  
Zhifeng Gu ◽  
Guoxi Liang ◽  
Erchun Kong
Keyword(s):  
Low Temperature ◽  
Asphalt Mixtures ◽  
Cracking Resistance ◽  
Epoxy Asphalt ◽  
Low Temperature Cracking

Thermal Cracking Models for AC and Modified AC Mixes in Alaska

1998 ◽  
Vol 1629 (1) ◽  
pp. 117-126 ◽  
Author(s):  
Lutfi Raad ◽  
Stephan Saboundjian ◽  
Peter Sebaaly ◽  
Jon Epps
Keyword(s):  
Low Temperature ◽  
Extreme Temperature ◽  
Thermal Cracking ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Cracking Resistance ◽  
Dry Process ◽  
Wet Process ◽  
Low Temperature Cracking ◽  
Styrene Butadiene

Low-temperature cracking is a major distress mode in Alaskan pavements because of the extreme temperature conditions—which range, in some instances, from about −50°C in winter to more than 40°C in summer. The use of asphalt modifiers in Alaskan pavements occurred over the past 15 years. These modifiers include Styrene-Butadiene-Styrene polymers, Styrene-Butadiene-Rubber polymers, ULTRAPAVE, and CRM [both the dry process (PlusRide) and the wet process]. Field observations and laboratory studies in Alaska and elsewhere indicate that the use of these modifiers would improve the low-temperature cracking resistance of pavements. The degree to which these modifiers provide beneficial effects for Alaskan pavements needs to be evaluated. The objectives of this research were (1) To characterize asphalt and polymer modified asphalt from a number of selected sites using Superpave PG grading system and to conduct thermal stress restrained specimen tests (TSRST) and Superpave IDT laboratory tests on field specimens; (2) To compare low-temperature cracking performance using field surveys; (3) To verify the applicability of the Superpave thermal cracking model (TCMODEL) and other available models for predicting low temperature cracking; and (4) To recommend guidelines for predicting minimum pavement temperatures in Alaska. Results of this study indicate, in general, significant improvement in low-temperature cracking resistance when polymer modifiers are used. Comparisons between predicted and observed low-temperature cracking using available crack propagation models, including Superpave TCMODEL, were poor. An improved regression model was developed using minimum air temperature, TSRST fracture temperature and strength, and pavement age to fit the observed field data for both conventional and polymer modified sections.

Enhancement effect of the aggregate particles on the low-temperature cracking resistance of the asphalt mortar

2021 ◽  
Vol 290 ◽  
pp. 123225
Author(s):  
Jianhuan Du ◽  
Ali Rahman ◽  
Zhengfeng Zhou ◽  
Changfa Ai ◽  
Yanjun Qiu
Keyword(s):  
Low Temperature ◽  
Enhancement Effect ◽  
Cracking Resistance ◽  
Low Temperature Cracking ◽  
Asphalt Mortar ◽  
Aggregate Particles

Chemo-Rheological Characterization of the Effect of Iran Rock Asphalt on the Performance of Waste Bio-Oil Modified Asphalts

2021 ◽  
pp. 036119812110159
Author(s):  
Jianmin Ma ◽  
Guoqiang Sun ◽  
Daquan Sun ◽  
Mingjun Hu ◽  
Tong Lu
Keyword(s):  
High Temperature ◽  
Fatigue Life ◽  
Low Temperature ◽  
Strain Level ◽  
Cracking Resistance ◽  
Temperature Performance ◽  
Bio Oil ◽  
Oil Residue ◽  
Low Temperature Cracking ◽  
Rheological Performance

This study aims to investigate the effect of Iran rock asphalt (IRA) on the rheological performance of waste bio-oil modified asphalt (WBMA). Three kinds of WBMA with bio-oil origins including soybean oil residue, castor oil residue, and waste cooking oil residue were blended with different dosages of IRA. The high-temperature performance of the three blended asphalt binders was evaluated using the temperature sweep test and multiple stress creep recovery (MSCR) test. The effect of IRA on the fatigue performance and low-temperature cracking resistance of the three WBMAs was evaluated using the linear amplitude sweep (LAS) test and the bending beam rheometer (BBR) test. A gel permeation chromatography (GPC) test was conducted to further understand the contribution of IRA to the overall rheological performance of different WBMAs. Results indicated that the high-temperature performance of the three WBMAs was enhanced significantly with the increase of IRA content. The predicted fatigue life from the LAS test showed that the incorporation of IRA extended the fatigue life of the three WBMAs at a lower strain level, while this effect was not profound at a higher strain level. Results from BBR test showed that IRA may increase the risk of low-temperature cracking and that the dosage of IRA should be limited to fulfill the requirements of the low-temperature performance. The GPC analysis revealed that the enhanced high-temperature performance and reduced low-temperature cracking resistance of WBMAs modified with IRA was mainly a result of the increased asphaltene concentration.

The Effect of Different Warm Additives on Performance Properties of HMA

2012 ◽  
Vol 178-181 ◽  
pp. 1369-1372 ◽  
Author(s):  
Shao Wen Du ◽  
Shan Shan Li
Keyword(s):  
Low Temperature ◽  
Asphalt Mixture ◽  
Moisture Resistance ◽  
Cracking Resistance ◽  
Rutting Resistance ◽  
Performance Properties ◽  
Compaction Temperature ◽  
Low Temperature Cracking ◽  
Negative Effect ◽  
Warm Additives

The effect of three types of warm additives, including Sasobit, Aspha-min and Evotherm DAT, on the compaction temperature, rutting resistance, low temperature resistance and moisture resistance of hot asphalt mixture (HMA) were evaluated by laboratory test. The test results show that Sasobit, Aspha-min and Evotherm DAT can reduce the compaction temperature of HMA by 27°C, 20°C and 30°C respectively. These warm additives all can improve obviously the rutting resistance of HMA. However, Evotherm DAT can increase low temperature cracking resistance ability of HMA. Aspha-min has obviously negative effect on the low temperature cracking resistance and moisture resistance of HMA. Therefore, it is necessary to investigate performance properties of HMA when selecting warm additives.

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