Effect of nano silica and pretreated rubber on the properties of terminal blend crumb rubber modified asphalt

被引：72

作者：

Han, Lili ^{[1
]}

Zheng, Mulian ^{[1
]}

Li, Jinglong ^{[2
]}

Li, Yifeng ^{[3
]}

Zhu, Yueming ^{[4
]}

Ma, Qiang ^{[5
]}

机构：

[1] Changan Univ, Key Lab Special Area Highway Engn, Minist Educ, Mid South Erhuan Rd, Xian 710064, Shaanxi, Peoples R China

[2] Shaanxi Construct Engn Grp, New Ind Zone, Xian 710000, Shaanxi, Peoples R China

[3] Highway Adm Bur Rizhao City, 7 Yantai Rd, Rizhao 276800, Shandong, Peoples R China

[4] China Inst Geotech Invest & Surveying, 177 Dongzhimen Nei St, Beijing 100007, Peoples R China

[5] Hunan Prov Commun Planning Survey & Design Inst C, 158 Two Sect Furong North Rd, Changsha 410008, Hunan, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 157卷

关键词：

Crumb rubber modified asphalt; Terminal blend; Nano silica; Property; Microstructure; TYRE RUBBER; RHEOLOGICAL PROPERTIES; MODIFIED BITUMENS; MIXTURES; PERFORMANCE; BINDERS;

D O I：

10.1016/j.conbuildmat.2017.08.187

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This research aimed to evaluate the physical and rheological properties of crumb rubber (CR) and nano silica modified asphalt. The wet process terminal blend (TB) CR-nano binders were prepared and characterized through a set of physical property tests and fluorescence microscopy, scanning electron microscopy as well as Fourier transform infrared spectroscopy techniques. Results indicate incorporation of nano silica into TB enhanced high temperature binder property but slightly reduced its low temperature ductility. However, by pre treating CR with sodium hypochlorite solution, the binder property and compatibility could be improved which was comparable to polymer modified bitumen. Additionally, nano-TB asphalt demonstrated enhanced dynamic modulus and decreased phase angle compared to TB, indicating its deformation resistance was increased. The bending beam rheometer test reveals rubber pre treating could increase the low temperature creep compliance of nano-TB binder. The microscopic images verified nano silica and CR grains were well dispersed in matrix asphalt, and several peaks disappeared whereas no silicon-related absorption was found in the spectrum of nano-TB binder, indicating the change in functional groups was probably caused by blending condition and nano silica barely interacted chemically with base bitumen or crumb rubber. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：277 / 291

页数：15

共 40 条

[1]

[Anonymous], 2014, J CHEM, DOI DOI 10.1016/J.PR0CBI0.2014.08.001

[2]

[Anonymous], D5976 ASTM

[3]

[Anonymous], 2005, SUPERPAVE FUNDAMENTA

[4]

[Anonymous], GBT192082008

[5] Enhancing the performance of crumb rubber-modified binders through varying the interaction conditions [J].

Attia, Mohamed ;

Abdelrahman, Magdy .

INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING, 2009, 10 (06) :423-434

[6]

Bahia H.U., 1995, The new proposed rheological properties of asphalt binders: why are they required and how do they compare to conventional properties

[7]

California Pavement Preservation Center Report, CP2C2010102TM

[8]

Chen L., 2010, CHEM RES APPL, V22

[9] A Study on the Performance and Storage Stability of Crumb Rubber-Modified Asphalts [J].

Cheng, G. ;

Shen, B. ;

Zhang, J. .

PETROLEUM SCIENCE AND TECHNOLOGY, 2011, 29 (02) :192-200

[10]

Cui Y., 2011, J BUILD MAT, V14

← 1 2 3 4 →