The Effect of Nanoclay on Rheological Properties and Storage Stability of SBS-Modified Bitumen

2011 ◽  
Vol 29 (8) ◽  
pp. 850-859 ◽  
Author(s):  
S. Sadeghpour Galooyak ◽  
B. Dabir ◽  
A. E. Nazarbeygi ◽  
A. Moeini ◽  
B. Berahman
Keyword(s):  
Rheological Properties ◽  
Storage Stability ◽  
Modified Bitumen ◽  
And Storage

scholarly journals SBS Modified Bitumen with Organic Layered Double Hydroxides: Compatibility and Aging Effects on Rheological Properties

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4201
Author(s):  
Canlin Zhang ◽  
Hongjun Dong ◽  
Zhengli Yan ◽  
Meng Yu ◽  
Ting Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Rheological Properties ◽  
Layered Double Hydroxides ◽  
Storage Stability ◽  
Service Performance ◽  
Aging Effects ◽  
Modified Bitumen ◽  
High Temperature Properties ◽  
Double Hydroxides ◽  
And Storage

SBS-modified bitumen (SMB) is susceptible to aging, which seriously influences its service performance and life. In order to strengthen the anti-aging ability of SMB, triethoxyvinylsilane was designed to organically modify layered double hydroxides (LDHs) and was applied to modify SMB. The dispersibility and storage stability of LDHs in SMB were markedly enhanced after triethoxyvinylsilane organic modification, and the compatibility and storage stability of SBS in bitumen were simultaneously enhanced. Compared with SMB, the introduction of LDHs and organic LDHs (OLDHs) could ameliorate the high-temperature properties of SMB, and the thermostability of SBS in bitumen at a high temperature was also distinctly improved, especially OLDHs. After aging, due to the oxidation of molecular bitumen and the degradation of molecular SBS, SMB became hardened and brittle, and the rheological properties were significantly deteriorated, which had serious impacts on the performance of SMB. LDHs can mitigate the detriment of aging to bitumen and SBS, and the deterioration of the rheological properties of SMB is obviously alleviated. As a result of the better dispersibility and storage stability, OLDHs exerted superior reinforcement of the anti-aging ability of SMB.

scholarly journals Rheological properties, textural properties, and storage stability of palm kernel-based diacylglycerol-enriched mayonnaise

2015 ◽  
Vol 118 (2) ◽  
pp. 185-194 ◽  
Author(s):  
Eng-Tong Phuah ◽  
Boon-Kee Beh ◽  
Cindy Shu-Ying Lim ◽  
Teck-Kim Tang ◽  
Yee-Ying Lee ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Storage Stability ◽  
Palm Kernel ◽  
Textural Properties ◽  
And Storage

scholarly journals Identifying the Long-Term Thermal Storage Stability of SBS-Polymer-Modified Asphalt, including Physical Indexes, Rheological Properties, and Micro-Structures Characteristics

2021 ◽  
Vol 13 (19) ◽  
pp. 10582
Author(s):  
Peng Wang ◽  
Hong-Rui Wei ◽  
Xi-Yin Liu ◽  
Rui-Bo Ren ◽  
Li-Zhi Wang
Keyword(s):  
Phase Separation ◽  
Rheological Properties ◽  
Softening Point ◽  
Storage Stability ◽  
Thermal Storage ◽  
Least Squares Regression ◽  
Modified Bitumen ◽  
Long Term Storage ◽  
Asphalt Performance

The thermal storage stability of styrene–butadiene–styrene tri-block copolymer modified bitumen (SBSPMB) is the key to avoid performance attenuation during storage and transportation in pavement engineering. However, existing evaluation index softening point difference within 48 h (ΔSP48) cannot effectively distinguish this attenuation of SBSPMB. Thus, conventional physical indexes, rheological properties, and micro-structure characteristics of SBSPMB during a 10-day storage were investigated in this research. Results showed that during long-term thermal storage under 163 °C for 10 days, penetration, ductility, softening point, recovery rate (R%), and anti-rutting factor (G*/sinδ) were decayed with storage time increasing. This outcome was ascribed to the phase separation of SBS, which mainly occurred after a 4-day storage. However, ΔSP48 after a 6-day storage met the specification requirements (i.e., below 2.5 °C). Thus, the attenuation degree of asphalt performance in field storage was not effectively characterized by ΔSP48 alone. Results from network strength (I) and SBS swelling degree tests revealed that the primary cause was SBS degradation and base asphalt aging. Moreover, conventional indexes, including penetration, ductility, and softening point, were used to build a prediction model for rheological properties after long-term storage using partial least squares regression model, which can effectively predict I, R, Jnr, G*/sinδ, and SBS amount. Correlation coefficient is above 0.8. G*/sinδ and I at the top and bottom storage locations had high coefficient with SBS amount. Thus, phase separation of SBSPMB should be evaluated during thermal storage.

scholarly journals Investigation on Rheological Properties and Storage Stability of Modified Asphalt Based on the Grafting Activation of Crumb Rubber

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1563 ◽  
Author(s):  
Xie ◽  
Yang ◽  
Lv ◽  
Zhang ◽  
Zhu ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Storage Stability ◽  
Crumb Rubber ◽  
Modified Asphalt ◽  
Rubber Particles ◽  
Polymer Separation ◽  
Low Temperature Creep ◽  
Rheological Test ◽  
And Storage ◽  
Separation Test

Acrylamide with a double bond and amide group can not only copolymerize with macromolecules of crumb rubber but also react with acidic groups in asphalt, so it was selected as a modifier to activate crumb rubber through chemical graft action. The purpose is to improve the compatibility between crumb rubber and asphalt and thus improve the rheological properties and storage stability of rubber asphalt. Infrared spectroscopy (IR) and scanning electron microscopy (SEM) were used to characterize the crumb rubbers and their modified asphalt. It was found that the crumb rubber of grafting acrylamide had better compatibility in asphalt due to its larger specific surface area and chemical reaction with asphalt. In addition, the high temperature rheological test, low temperature creep test, and polymer separation test were carried out to study the effect of grafted activated crumb rubber on the properties of modified asphalt. The results showed that compared with modified asphalt with common crumb rubber (CRMA), the rheological properties and storage stability of modified asphalt with grafting activated crumb rubber (A–G–R) were improved significantly. The results of microscopic and macroscopic tests show that the activated rubber particles have a larger contact area with asphalt due to a rougher surface and the chemical cross-linking between rubber particles and asphalt further strengthens their interaction. Therefore, there is a relatively stable blend system formed in modified asphalt, and its performance of modified asphalt has been improved.

Rheological properties and storage stability of asphalt modified with nanoscale polyurethane emulsion

2017 ◽  
Vol 36 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Ruien Yu ◽  
Xijing Zhu ◽  
Xing Zhou ◽  
Yanfei Kou ◽  
Maorong Zhang ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Storage Stability ◽  
And Storage

scholarly journals Rheological Properties, Compatibility, and Storage Stability of SBS Latex-Modified Asphalt

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3683 ◽  
Author(s):  
Shisong Ren ◽  
Xueyan Liu ◽  
Weiyu Fan ◽  
Haopeng Wang ◽  
Sandra Erkens
Keyword(s):  
Rheological Properties ◽  
Flow Resistance ◽  
Storage Stability ◽  
Elastic Recovery ◽  
Steady State Flow ◽  
Modified Asphalt ◽  
Asphalt Modification ◽  
Styrene Butadiene ◽  
And Storage ◽  
Butadiene Styrene

A styrene-butadiene-styrene (SBS) latex modifier can be used for asphalt modification due to the fact of its energy-saving, construction convenience, and economic advantages. The objective of this study was to investigate the influence of asphalt type and SBS latex dosage on the rheological properties, compatibility, and storage stability of asphalt through temperature and frequency sweep, steady-state flow, multiple stress creep and recovery (MSCR) tests, Cole-Cole plots and thermal storage tests. The results indicated that high SBS latex content is beneficial for improving anti-rutting, anti-fatigue, viscous flow resistance, and elastic recovery abilities of modified asphalt. The chemical composition of asphalt had a significant effect on the properties of the SBS latex-modified asphalt. High asphaltenes and low resins were favorable to enhancing anti-rutting and recovery properties but weakened the anti-fatigue, compatibility, and storage stability of modified asphalt. Furthermore, compared to SBS particle-modified asphalt, SBS latex-modified asphalt had greater rutting and fatigue resistance. However, SBS latex-modified asphalt had some disadvantages in compatibility and storage stability. Comprehensively considering the balance of viscoelastic properties, compatibility, and storage stability of SBS latex-modified asphalt, the mixing dosage of SBS latex modifier is recommended at 4.0 wt% which could feasibly replace SBS particle in asphalt modification.

scholarly journals The effects of nano kaolin clay modified bitumen on the softening point and storage stability

2021 ◽  
Vol 682 (1) ◽  
pp. 012062
Author(s):  
Z F Mohamed Jaafar ◽  
P J Ramadhansyah ◽  
K A Masri ◽  
N Mashros ◽  
M N Mohd Warid ◽  
...  
Keyword(s):  
Softening Point ◽  
Storage Stability ◽  
Kaolin Clay ◽  
Modified Bitumen ◽  
And Storage

scholarly journals Characterization of Bitumen Modified with Pyrolytic Carbon Black from Scrap Tires

2019 ◽  
Vol 11 (6) ◽  
pp. 1631 ◽  
Author(s):  
Haopeng Wang ◽  
Guoyang Lu ◽  
Shuyin Feng ◽  
Xiaobo Wen ◽  
Jun Yang
Keyword(s):  
High Temperature ◽  
Carbon Black ◽  
Rheological Properties ◽  
Storage Stability ◽  
Pyrolytic Carbon ◽  
Scrap Tire ◽  
Modified Bitumen ◽  
Laboratory Test Results ◽  
Aging Resistance

Pyrolytic carbon black (CBp) from scrap tire pyrolysis is a potential modifier for the bitumen industry. Binders containing different contents of CBp were prepared and experimentally investigated to examine the effects of CBp on the electrical and thermal conductivity, conventional physical properties, rheological properties, high-temperature antirutting performance, aging resistance, and storage stability. Laboratory test results indicated that the incorporation of CBp effectively improves the electrothermal properties, rheological properties, high-temperature rutting resistance, and aging resistance. It also increases the viscosity and decreases the storage stability of bitumen. The study confirms that CBp-modified bitumen with proper selection of content can be a multifunctional paving material.

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