复掺钢丝绒纤维/水镁石纤维沥青胶浆性能研究

doi:10.11896/j.issn.1005-023X.2018.02.027

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Abstract

In order to investigate how fibers affect asphalt binder in low-temperature ductility, shear resistance, apparent viscosity and high-temperature rheology, ductility test, cone penetration test, Brookfield viscosity test and dynamic shear rheology test were applied and total adding mass and volume ratio of two type of fibers were considered. And cross sections morphology of samples were observed by scanning electronic microscope. Results showed that increasing addition of fibers could reduced low-temperature ductility. Viscosity was improved by increasing fiber addition but improvement seemed slower when adding proportion was close to 6%; while shear resistance and rut factor (G ^*/sinδ) performed better when volume ratio of steel wool and brucite fiber was 6/4.Therefore,rutting resistance can be improved by viscosity growth and bridging induced by well dispersion and interaction between binder and fibers.

Key words： road engineering steel wool fiber brucite fiber asphalt mortar

Published: 25 January 2018 Online: 2018-01-25

CLC number:

U414.1

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	Articles by authors
	Ziming LIU
	Huaxin CHEN
	Rui XIONG
	Yongdan WANG
	Xiaowen WANG

Cite this article:

Ziming LIU,Huaxin CHEN,Rui XIONG, et al. Experimental Investigation on Properties of Steel Wool Fiber/Brucite Fiber Reinforced Asphalt Mortar[J]. Materials Reports, 2018, 32(2): 295-300.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.02.027 OR https://www.mater-rep.com/EN/Y2018/V32/I2/295

Chemical composition of brucite fiber

Micrograph of brucite fiber

Appearance of brucite fiber

Micrograph of steel wool fiber

Appearance of steel wool fiber

Cone penetration test

Brookfield rotary viscosity meter

Test principle of dynamic shear rheometer

Results of ductility test at 10 ℃

Ductility sample

Variation of shear strength with fiber content

The test results of fiber asphalt mortar viscosity with different total fiber content

Effect of temperature on the fiber asphalt mortar G^*/sinδ with different total fiber content

Effect of frequency on the fiber asphalt mortar G^*/sinδ

The cross-section morphology of fiber asphalt mortar

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