Low Temperature Anti-Cracking Performance of Brucite-Fiber-Reinforced Asphalt Concrete

2011 ◽  
Vol 228-229 ◽  
pp. 23-28 ◽  
Author(s):  
Bo Wen Guan ◽  
Shuan Fa Chen ◽  
Rui Xiong
Keyword(s):  
Low Temperature ◽  
Asphalt Concrete ◽  
Asphalt Binder ◽  
Basalt Fiber ◽  
Test Results ◽  
Yield Strain ◽  
Bending Strain ◽  
Cracking Performance ◽  
Fibrous Mineral ◽  
Better Than

As a naturally occurring fibrous mineral abundant in China, it is not common to use the brucite fiber as the reinforcement in asphalt concrete to improve its anti-cracking property in low temperature until now. Laboratory experiments are made on the brucite fiber asphalt binder and the brucite fiber asphalt concrete in this paper. Effects of the dosage of the brucite fiber on anti-crack properties of asphalt binder and brucite fiber asphalt concrete in low temperature are also studied. The contrast test is made between brucite fiber, lignin fiber and basalt fiber. Test results show that the value of the ductility, the compliance in extension and the yield strain energy of asphalt binder decreases with the increasement of the dosage of brucite fiber. However, the temperature sensitivity property of asphalt binder in low temperature can be improved. The anti-crack properties especially the maximum bending stress and the maximum bending strain are improved by adding the proper quantity of brucite fiber in asphalt concrete. According to the test results, the optimum quantity of brucite fiber was about 0.4 wt.% of asphalt. Based on the contrast test, the brucite fiber is better than the lignin fiber on improving the anti-crack properties of the asphalt concrete, but which is similar to the basalt fiber.

scholarly journals Impact of Graphene Oxide on Zero Shear Viscosity, Fatigue Life and Low-Temperature Properties of Asphalt Binder

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3073
Author(s):  
Abbas Mukhtar Adnan ◽  
Chaofeng Lü ◽  
Xue Luo ◽  
Jinchang Wang
Keyword(s):  
Graphene Oxide ◽  
Fatigue Life ◽  
Low Temperature ◽  
Shear Viscosity ◽  
Storage Stability ◽  
Asphalt Binder ◽  
Asphalt Binders ◽  
Test Results ◽  
Zero Shear Viscosity ◽  
Modified Asphalt

This study has investigated the impact of graphene oxide (GO) in enhancing the performance properties of an asphalt binder. The control asphalt binder (60/70 PEN) was blended with GO in contents of 0%, 0.5%, 1%, 1.5%, 2%, and 2.5%. The permanent deformation behavior of the modified asphalt binders was evaluated based on the zero shear viscosity (ZSV) parameter through a steady shear test approach. Superpave fatigue test and the linear amplitude sweep (LAS) method were used to evaluate the fatigue behavior of the binders. A bending beam rheometer (BBR) test was conducted to evaluate the low-temperature cracking behavior. Furthermore, the storage stability of the binders was investigated using a separation test. The results of the ZSV test showed that GO considerably enhanced the steady shear viscosity and ZSV value, showing a significant contribution of the GO to the deformation resistance; moreover, GO modification changed the asphalt binder’s behavior from Newtonian to shear-thinning flow. A notable improvement in fatigue life was observed with the addition of GO to the binder based on the LAS test results and Superpave fatigue parameter. The BBR test results revealed that compared to the control asphalt, the GO-modified binders showed lower creep stiffness (S) and higher creep rate (m-value), indicating increased cracking resistance at low temperatures. Finally, the GO-modified asphalt binders exhibited good storage stability under high temperatures.

Effect of Basalt Fiber on the Asphalt Binder and Mastic at Low Temperature

2013 ◽  
Vol 25 (3) ◽  
pp. 355-364 ◽  
Author(s):  
Dong Wang ◽  
Linbing Wang ◽  
Xinyu Gu ◽  
Guoqing Zhou
Keyword(s):  
Low Temperature ◽  
Asphalt Binder ◽  
Basalt Fiber

Influence Analysis of Performance on Sasobit Warm Mix Asphalt with Salinity

2014 ◽  
Vol 490-491 ◽  
pp. 138-141
Author(s):  
Kun Wang ◽  
Jing Ya Chen ◽  
Xiang Qu
Keyword(s):  
Low Temperature ◽  
Environmental Benefits ◽  
Fatigue Performance ◽  
Test Results ◽  
Temperature Performance ◽  
Cracking Performance ◽  
Low Temperature Cracking ◽  
Short And Long Term ◽  
Analysis Of Performance

Sasobit warm mix drainage asphalt pavement has become increasingly popular due to its environmental benefits and comfortable using effect. However, test results show that its low-temperature and anti-fatigue performance have a certain degree of reduced. To improve the performance of asphalt four different doses (1%, 3%, 5% and 7%) of salt are added to the Sasobit asphalt. Laboratory tests were used to simulate short and long term aging asphalt in the process of construction and using pavement. A series of binder tests including bending beam rheometer (BBR), dynamic shear rheometer (DSR) and Brookfield viscosity tests were conducted. Results show an increase of rutting performance for warm mix binders with Sasobit while asphalt with salt has similar high temperature performance to original asphalt. Unlike Sasobit which has a decrease of cracking performance for asphalt at low-temperature, salinity can greatly improve the Low-temperature performance. And the low-temperature cracking performance and anti-fatigue performance presents a tendency of climbing up first and then declining with the increase of salinity. The figure of viscosity-temperature curve shows that the optimum of salinity is 5%.Further more, asphalt with Sasobit and salt can gain better performance and same mixing and compaction effect in lower 20°C than hot mix asphalt without it.

scholarly journals Laboratory Evaluation of Asphalt Binder Modified with Crumb Rubber and Basalt Fiber

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Li Liu ◽  
You Huang ◽  
Zhaohui Liu
Keyword(s):  
Shear Strength ◽  
Low Temperature ◽  
Complex Modulus ◽  
Heavy Traffic ◽  
Asphalt Binder ◽  
Basalt Fiber ◽  
Crumb Rubber ◽  
Traffic Load ◽  
Laboratory Evaluation ◽  
Temperature Property

Asphalt pavement subjected to heavy traffic load and harsh environmental conditions can easily build up damage and shorten the service life. In this paper, different dosages of basalt fiber (BF) were introduced into crumb rubber (CR) modified asphalt binder, and a series of laboratory tests were carried out to evaluate the properties and performances. A dynamic shear rheometer (DSR) was employed to evaluate viscosity and rheological properties. Bending beam rheometer (BBR) test and direct tensile test (DTT) were conducted to test the low temperature property. Cone penetration was designed to test shear strength. Results show that the optimum content of BF is 0.3% by the weight of asphalt binder based on the overall performance evaluation. Viscosity, complex modulus, fatigue property, rutting resistance, and shear strength are improved by introducing BF into asphalt binder. Stiffness and elasticity are also increased. BBR indicates that ductility at low temperature is reduced a little by the presence of BF, but DTT shows that both tensile strength and elongation are improved by BF. Considering that DTT is more performance related, DTT is preferred over BBR to evaluate cracking potentials at low temperatures of asphalt binder modified with CR and BF. Finally, it is revealed through microscale scanning that three mechanisms, absorption of asphalt binder, 3-dimensional fiber network, and bridging effects, contribute to the performance improvement of asphalt binder modified with CR and BF.

Experimente Research of Filler-Bitumen Ratio Impact on Asphalt Mixture Performance

2013 ◽  
Vol 361-363 ◽  
pp. 1851-1856 ◽  
Author(s):  
Lin Cao
Keyword(s):  
Low Temperature ◽  
Bending Strength ◽  
Asphalt Mixture ◽  
Bending Test ◽  
Bending Strain ◽  
Cracking Performance ◽  
Beam Bending ◽  
Bending Failure ◽  
The Impact ◽  
Asphalt Mortar

AH-130 base asphalt graded according to the upper limit of AC-16 close gradation is selected in this paper to identify the impact of asphalt mortar of different filler-bitumen ratios on asphalt mixture’s road performance through small beam bending test at low temperature. And then bending failure energy, in substitute of bending strength, bending strain, is used to evaluate the anti-cracking performance of asphalt mixture at low temperature.

Research on Basalt Fiber Asphalt Concrete's Low Temperature Performance

2014 ◽  
Vol 505-506 ◽  
pp. 35-38 ◽  
Author(s):  
Chun Mei Gao ◽  
Shuo Han ◽  
Shuang Chen ◽  
He Li
Keyword(s):  
Low Temperature ◽  
Asphalt Concrete ◽  
Failure Strain ◽  
Basalt Fiber ◽  
Test Method ◽  
Temperature Performance ◽  
Low Temperature Cracking ◽  
Indirect Tensile ◽  
Low Temperature Performance ◽  
Temperature Damage

Conduct experimental study on low temperature performance about asphalt concrete with 6mm basalt fiber and without basalt, 6mm fibers whose dosage is 0.12%0.15% and 0.17%, test method is the indirect tensile test,test temperature is-10±0.5°C. The results show that basalt fiber improved the strength and failure strain of asphalt concrete in low temperature damage, reduced the failure stiffness,in which the maximum increased value of breaking strength is 3.41%, the maximum increased value of failure strain is 38.83%,and the maximum reduced value of failure stiffness is 25.52%,obviously improved low temperature cracking resistance of asphalt concrete;for low temperature performance, the optimum amount of value about 6mm basalt fiber is 0.15% .

scholarly journals Studying the Effect of Syrian Natural Zeolite On Properties of Asphalt Binder

2021 ◽  
Vol 28 (1) ◽  
pp. 59-68
Author(s):  
Mahmoud Ali Abdullh ◽  
Fayez Suleiman ◽  
Bassem Ali ◽  
Adel Dib
Keyword(s):  
Asphalt Concrete ◽  
Natural Zeolite ◽  
Asphalt Binder ◽  
Economic Benefits ◽  
Synthetic Zeolite ◽  
Test Results ◽  
X Ray Diffraction ◽  
X Ray ◽  
Aged Asphalt ◽  
The Cost

In the last years, many researchers studied production of warm asphalt concrete by usingorganic, chemical and water-bearing additive )synthetic zeolite). The purpose of this research is to study theeffect of Syrian natural zeolite on the physical and rheological properties of asphalt binder and verify ofusing it to produce warm asphalt concrete (as a binder modifier or as additive to asphalt concrete), in additionto economic benefits by saving on the cost of synthetic zeolite. In this study, natural zeolite characterizationhas been investigated via X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD) and Thermal Gravimetricanalysis (TGA). Natural zeolite was added to asphalt binder with different percentages (3, 4, 5 and 6%) byweight and to determine the effect of natural zeolite on properties of asphalt binder, penetration at )25(°∁,softening point, ductility, viscosity at (110, 120, 135)°∁ and RTOFT tests were carried out on both modifiedand unmodified aged asphalt binder with natural zeolite. According to the test results, it has been seen thatthe addition of natural zeolite improves properties of the asphalt binder and an increase in its resistance tofatigue, and do not make a substantial difference on the workability of the asphalt binder. So the effect ofthe mixture of natural zeolite additives on the workability could not be predicted on asphalt binder, thereforethe direct effect of additives should be studied on the asphalt mixtures.

scholarly journals Laboratory Evaluation on Performance of Fiber-Modified Asphalt Mixtures Containing High Percentage of RAP

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Yuefeng Zhu ◽  
Yanwei Li ◽  
Chundi Si ◽  
Xiaote Shi ◽  
Yaning Qiao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Asphalt Binder ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Self Healing ◽  
Test Results ◽  
Moisture Susceptibility ◽  
Modified Asphalt ◽  
Modified Binders ◽  
Different Types

In recent years, the significant demand for sustainable paving materials has led to a rapid increase in the utilization of reclaimed asphalt pavement (RAP) materials. When RAP is mixed with virgin asphalt concrete, particularly when its percentage is high, performance of the binder and asphalt concrete can be adversely affected. For this reason, different types of additives need to be identified and evaluated beforehand to mitigate the adverse effects. In this study, different types of fiber materials were identified and selected as binder/mixture additives, including lignin fiber (LF), polyester fiber (PF), and basalt fiber (BF). Various samples of fiber-modified binders and asphalt mixtures with different RAP contents (0%, 20%, and 40%) were prepared and were evaluated using two sets of laboratory testing: (i) dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests were performed to study the rheological properties of fiber-modified binders; (ii) the wheel tracking test, bending creep test, moisture susceptibility test, fatigue test, and self-healing fatigue test were conducted to characterize the laboratory properties of fiber-modified RAP mixtures. Test results for the modified binders show that the BF-modified binder has the greatest positive effect on the high-temperature performance of the asphalt binder, followed by PF- and LF-modified binders. However, the virgin asphalt shows the best low-temperature property than the fiber-modified asphalt binder. Test results for the whole RAP mixtures show that all fibers have a significant effect on the properties (including high- and low-temperature stability, moisture susceptibility, fatigue, and self-healing ability) of RAP mixtures. Among them, adding BF shows the greatest improvement in high-temperature stability, fatigue resistance, and self-healing ability of RAP mixtures. LF is found to significantly enhance low-temperature properties, and PF can greatly improve the resistance to moisture damage of RAP mixtures. For high percentage of RAP using on sites, adding multiple additives may further enhance its durability.

Prediction of Low-Temperature Cracking of Asphalt Concrete Mixtures with Thermal Stress Restrained Specimen Test Results

1996 ◽  
Vol 1545 (1) ◽  
pp. 50-58 ◽  
Author(s):  
Hannele K. Zubeck ◽  
Ted S. Vinson
Keyword(s):  
Thermal Stress ◽  
Low Temperature ◽  
Asphalt Concrete ◽  
Probabilistic Model ◽  
Deterministic Model ◽  
Crack Spacing ◽  
Test Results ◽  
Concrete Mixtures ◽  
Specimen Test ◽  
Low Temperature Cracking

A deterministic model and a probabilistic model were developed to predict low-temperature crack spacing as a function of time using thermal stress restrained specimen test results, pavement thickness and bulk density, pavement restraint conditions, and air temperature. The effect of aging on pavement properties was incorporated in the models by predicting the field aging with long-term oven aging treatment in the laboratory. The calculation of the crack spacing is based on the theory that the pavement slab cracks when the pavement temperature reaches the cracking temperature of the mixture and the slab is fully restrained. The deterministic model predicts crack spacing with time, whereas the probabilistic model predicts crack spacing and its variation with time and yields the reliability of the design with regard to a minimum acceptable crack spacing criterion defined by road authorities. The probabilistic model is recommended for use in predicting the low-temperature cracking of asphalt concrete mixtures.

scholarly journals Preparation and the Effect of Surface-Functionalized Calcium Carbonate Nanoparticles on Asphalt Binder

2019 ◽  
Vol 10 (1) ◽  
pp. 91 ◽  
Author(s):  
Chenchen Shen ◽  
Rui Li ◽  
Jianzhong Pei ◽  
Jun Cai ◽  
Tao Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Calcium Carbonate ◽  
Low Temperature ◽  
Asphalt Binder ◽  
Asphalt Binders ◽  
Test Results ◽  
Negative Effects ◽  
Excellent Thermal Stability ◽  
Temperature Performance ◽  
Modified Asphalt Binder

To solve the nanoparticles (NPs) agglomeration phenomena of nanometer calcium carbonate (nano-CaCO3) modified asphalt binder, in this paper, solvent-free CaCO3 nanofluids (NFs) were prepared based on surface-functionalized CaCO3 NPs to study the effect on asphalt. Microscopic structures, compositions, and thermal stability were characterized by Fourier transform infrared spectrometer (FTIR), X-ray diffractometer (XRD), transmission electron microscope (TEM), and thermogravimetric analyzer (TGA), respectively. Results showed that perfect CaCO3 NFs were successfully prepared, and were good enough for asphalt mixing due to their excellent thermal stability. Scanning electron microscopy (SEM), conventional tests, dynamic shear rheometry (DSR), and bending beam rheometry (BBR) were conducted to investigate the modifying effect. The SEM results indicated that CaCO3 NFs had better compatibility with asphalt binder than original CaCO3 NPs. Conventional and DSR test results demonstrated that CaCO3 NFs had slight negative effects on high-temperature performance while improving the low-temperature performance of the asphalt binder. The BBR test results confirmed that the modifier addition effectively enhanced asphalt binders’ low-temperature crack resistance performance.

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