Evaluation of Low Temperature Performance for Diatomite Modified Asphalt Mixture

Zhang, Yi Bo; Zhu, Hong; Wang, Guo An; Chen, Tuan Jie

doi:10.4028/www.scientific.net/amr.413.246

Cited by 9 publications

(8 citation statements)

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“…Chen [ 20 ] determined that the optimum amount of compound diatomite modifier was 10%, while at this content, the Marshall specimens showed the best performances. Zhang [ 16 ] concluded that the optimum dosage of diatomite was 13% through the analysis of the low-temperature performance of binders and mixtures. Hence, 10–13% was a reasonable range of dosage.…”

Section: Experimental Methodsmentioning

confidence: 99%

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Performance Evaluation and Improving Mechanisms of Diatomite-Modified Asphalt Mixture

et al. 2018

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Diatomite is an inorganic natural resource in large reserve. This study consists of two phases to evaluate the effects of diatomite on asphalt mixtures. In the first phase, we characterized the diatomite in terms of mineralogical properties, chemical compositions, particle size distribution, mesoporous distribution, morphology, and IR spectra. In the second phase, road performances, referring to the permanent deformation, crack, fatigue, and moisture resistance, of asphalt mixtures with diatomite were investigated. The characterization of diatomite exhibits that it is a porous material with high SiO2 content and large specific surface area. It contributes to asphalt absorption and therefore leads to bonding enhancement between asphalt and aggregate. However, physical absorption instead of chemical reaction occurs according to the results of FTIR. The resistance of asphalt mixtures with diatomite to permanent deformation and moisture are superior to those of the control mixtures. But, the addition of diatomite does not help to improve the crack and fatigue resistance of asphalt mixture.

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Section: Experimental Methodsmentioning

confidence: 99%

“…Meanwhile, the pavement performances of diatomite-modified asphalt mixtures have been studied. Zhang [ 16 ] and Tan [ 17 ] evaluated the effect of diatomite on the low-temperature performance of asphalt mixtures. The results indicate that the bending strain energy density of a mixture increases with the addition of diatomite.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation and Improving Mechanisms of Diatomite-Modified Asphalt Mixture

et al. 2018

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“…The other one was the different modifiers (i.e., basalt fiber in Liu's study, diatomite and basalt fiber in this paper). The reference [16,43] had suggested that the cryogenic creep stiffness of diatomite modified asphalt mastic is higher, which leads to the cryogenic performance of asphalt decreasing. So the conclusion of this paper is not completely consistent with that by Liu et al However, in this paper the force ductility test conclusion was consistent with the conclusion of Liu et al that the cryogenic anticracking property of the asphalt mixture was improved.…”

Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

Laboratory Study on Properties of Diatomite and Basalt Fiber Compound Modified Asphalt Mastic

Cheng

Zhu

Tan

et al. 2017

Advances in Materials Science and Engineering

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In order to improve the performance of asphalt mastic, some researchers have added diatomite or basalt fiber as a modifier to the asphalt mastic, and the results show that some properties of the asphalt mastic were improved. For the simultaneous addition of diatomite and basalt fiber, two kinds of modifier, compound modified asphalt mastic had not been reported; in this paper, thirteen groups of diatomite and basalt fiber (DBFCMAM) compound modified asphalt mastic with different content were prepared to study the performance. Softening point, cone penetration, viscosity, and DSR tests were conducted, for the high temperature performance evaluation of DBFCMAM, whereas force ductility and BBR tests were used in the low temperature performance study of the DBFCMAM. The results demonstrated that the high temperature performance of DBFCMAM was increased; moreover, the low temperature performance of DBFCMAM improved by diatomite and basalt fiber according to the results of the force ductility test; however, the conclusion of the BBR test data was inconsistent with the force ductility test. In summary, the high temperature and low temperature properties of DBFCMAM had been improved.

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“…Therefore, more and more modifiers and reinforced materials are used to improve the performance of neat asphalt mixtures, such as styrene-butadiene-styrene (SBS), diatomite, and basalt fibers. Some researchers have pointed out that the basalt fibers and diatomite reinforced asphalt mixture (DBFAM), as well as SBS modified asphalt mixture (SBSAM), have excellent mechanical properties [2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al [2] pointed out that the addition of diatomite significantly decreased the equivalent brittle point of asphalt, thus diatomite could greatly improve the low-temperature performance of asphalt. Tan et al [3] studied the low-temperature performance of diatomite modified asphalt mixtures by static creep tests, thermal stress restraint tests, and thermal conductivity tests, and the results showed that the low-temperature performance of diatomite modified asphalt mixture is better than that of neat asphalt mixture.…”

Section: Introductionmentioning

confidence: 99%

Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

Cheng

et al. 2019

Applied Sciences

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To obtain the viscoelastic parameters of asphalt mixtures and analyze the effect of temperatures and modifiers on viscoelastic properties of asphalt mixtures, the creep compliances of the neat asphalt mixture (AM), compound diatomite and basalt fibers reinforced asphalt mixture (DBFAM), and styrene-butadiene-styrene modified asphalt mixture (SBSAM) were tested and calculated by the static creep tests. And the creep compliances of the three asphalt mixtures at −20 °C, −10 °C, and 0 °C are deducted by the time–temperature equivalence principle (TTEP) and Arrhenius equation. Further, the relaxation modulus of the three asphalt mixtures from −20 °C to 50 °C at 10 °C increments are calculated by the convolution integral and Simpson method. Subsequently, the Burgers model, the generalized Kelvin model, and the generalized Maxwell model are applied to analyze the viscoelastic properties of the three asphalt mixtures at different temperatures. The results show that the generalized Kelvin model and the generalized Maxwell model are superior to the Burgers model in describing the variation of viscoelastic properties of asphalt mixtures with loading time. At low temperatures, asphalt mixtures have excellent properties in resisting permanent deformation and releasing internal stress. Besides, the addition of SBS modifier and compound diatomite and basalt fibers modifier can significantly raise the viscosity η1 and the elastic modulus E1 of the asphalt mixture, respectively.

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Evaluation of Low Temperature Performance for Diatomite Modified Asphalt Mixture

Cited by 9 publications

References 1 publication

Performance Evaluation and Improving Mechanisms of Diatomite-Modified Asphalt Mixture

Performance Evaluation and Improving Mechanisms of Diatomite-Modified Asphalt Mixture

Laboratory Study on Properties of Diatomite and Basalt Fiber Compound Modified Asphalt Mastic

Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

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