【摘 要】
：
Discarded train brake shoes mainly consist of steel-backed friction material.To be better reutilized,its essential features and its interaction in cement-based material need to be studied.Consequently,particle size analysis,SEM,IR and TGA were used to inv
【机 构】
：
School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, Ch
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
Discarded train brake shoes mainly consist of steel-backed friction material.To be better reutilized,its essential features and its interaction in cement-based material need to be studied.Consequently,particle size analysis,SEM,IR and TGA were used to investigate two types of waste brake shoes,i e,mechanical grinding friction reclaimed material of waste brake-shoe (G-FRMWBS) and pyrolysis-friction reclaimed materials of waste brake-shoe (P-FRMWBS).The latter exhibited less organic content,larger range of particle size distribution and smaller medium particle diameter.Both types contained inorganic particles of spherical and irregular shapes,striped with steel fiber.Upon isometric substituting fine aggregates,G-FRMWBS lifted the strength of mortar effectively that was increased by 16.6％ and 17.5％ when the replacing rate was 5％;the value went up to 19.2％ and 19.2％ when the replacing rate was 10％.Moreover,inclusion of FRMWBS enhanced the chloride penetration resistance,and optimized the pore characteristic and ITZ (interfacial transition zone) as well.
其他文献
The damage process and corrosion ion distribution in concrete, which was exposed to 60 and 170 drying-immersion cycles of sulfate solution, were systematically investigated. The effects of plain concrete, plain concrete mixed with 4 and 8 kg/m3 modified P
At the initial rolling temperature of 250 to 400 ℃,AZ31B magnesium alloy sheets were hot rolled by four different rolling routes.Microstructures and mechanical properties of the hot-rolled magnesium alloy sheets were analyzed by optical microscope and ten
This paper aimed to improve the water-retention performance and basic physical properties of sulfoaluminate cement (SAC)-based planting cementitious material.The effect of natural zeolite on the performance of SAC-based planting material was investigated.
Significant efforts have been made in revealing the mechanism of thaumasite formation in concrete, which continues to be fraught with ambiguities and dissension. Chemical method was employed to synthesize pure C3S, C2S, C3A, ettringite, and thaumasite, an
As a decorative material,magnesium oxychloride cement was used as a photocatalyst supporter to purify the pollutants indoors.Due to excellent adsorption properties of activated carbon (AC),the photocatalytic composties,TiO2/AC,were prepared and introduced
With the application of X-ray computed tomography (CT) technology of C80 high-strength concrete with polypropylene fiber at elevated temperatures, the microscopic damage evolution process observation and image building could be obtained, based on the stat
Composition,morphology,and structure of hydration products in hardened pastes of three kinds of blended cement (cement-silica fume,cement-quartz powder and cement-silica fume-quartz powder) hydrated under different curing regimes (standard curing,90 ℃ ste
To obtain the compositions and microstructure of hydration products of cementitious material in different hydration ages and its growth law of filling strength, the optimal proportion of composite cementitious material was determined according to the chem
The physical and mechanical properties of unstabilized rammed earth with different clay contents were studied, which could provide a theoretical basis for the understanding of mechanical properties of unstabilized rammed earth and improve the construction