Effect of nano-zinc oxide and organic expanded vermiculite on rheological properties of different bitumens before and after aging

2017 ◽  
Vol 146 ◽  
pp. 30-37 ◽  
Author(s):  
Chongzheng Zhu ◽  
Henglong Zhang ◽  
Caijun Shi ◽  
Sheng Li
Keyword(s):  
Zinc Oxide ◽  
Rheological Properties ◽  
Expanded Vermiculite ◽  
Nano Zinc Oxide ◽  
Before And After ◽  
Nano Zinc

scholarly journals Physical and rheological properties of nano zinc oxide modified asphalt binder

2018 ◽  
Vol 250 ◽  
pp. 02004
Author(s):  
Khairul Nizam Mohd Yunus ◽  
Mohd Ezree Abdullah ◽  
Mohd Khairul Ahmad ◽  
Nurul Hidayah Mohd Kamaruddin ◽  
Haniffah Tami
Keyword(s):  
Zinc Oxide ◽  
Rheological Properties ◽  
Softening Point ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Zinc Nitrate ◽  
Rutting Resistance ◽  
Nano Zinc Oxide ◽  
Modified Binder ◽  
Nano Zinc

The main objectives of this work were to investigate the physical and rheological properties of nano zinc oxide (NaZO) flake structure as a modifier in asphalt binder. NaZO was produced with hydrothermal method by using two precursors, which are zinc nitrate and sodium hydroxide. NaZO was mixed with virgin binder 60/70 penetration grade at 3%, 5% and 7% of asphalt binder weight, respectively. The physical properties were evaluated by conventional testing, such as penetration, softening point and viscosity. Meanwhile, the rheological property, such as rutting resistance, was measured by using a dynamic shear rheometer (DSR) for unaged and rolling thin film oven (RTFO) aged. It was observed that the penetration value was decreased and the softening point increased with increasing NaZO concentrations. In addition, the rutting resistance factor was increased for the modified binder. A comparison between the modified binder, 7% NaZO, showed a greater resistance to rutting before and after aging. Results of this study showed that the NaZO addition had increased the asphalt binder stiffness ; thus, could contribute to better resistance to permanent deformation.

Effect of Calcination on the Basic Strength of Surface Modified Nano-Zinc Oxide Characterised by FTIR and Back Titration Methods

2015 ◽  
Vol 1107 ◽  
pp. 326-332
Author(s):  
Abdul Rahim Yacob ◽  
Kamaluddeen Suleiman Kabo
Keyword(s):  
Zinc Oxide ◽  
Metal Oxides ◽  
Base Catalysis ◽  
Nano Zinc Oxide ◽  
Back Titration ◽  
And Performance ◽  
Nano Zinc ◽  
Surface Modified ◽  
Heterogeneous Base ◽  
Basic Strength

The use of metal oxides in heterogeneous base catalysis has gained a large interest due to their application in many chemical and industrial processes and is environmental friendly. Basic metal oxides are commonly used and their structures, morphology and performance can be modified by method of preparation and thermal activation. In this study, surface modified amphoteric zinc oxide was prepared via hydration-dehydration method and characterised by TGA and FTIR. The basic strength at various temperatures is characterised by FTIR and back titration analyses. The results shows that surface modified zinc oxide has the highest basic strength of 1.453mmolg-1at 400°C making it a relatively good and suitable compound for use in heterogeneous basic catalysis. This result is also supported by FTIR spectra which show possible relationship between the Lewis O2-and increasing basic strength.

Study on the Viscosity and Dispersion Stability of AA-AMPS Copolymer on Nano Zinc Oxide

2014 ◽  
Vol 692 ◽  
pp. 288-291
Author(s):  
Yue Long Liu ◽  
Jia Liu
Keyword(s):  
Zinc Oxide ◽  
Radical Polymerization ◽  
Polyacrylic Acid ◽  
Sulfonic Acid ◽  
Dispersion Stability ◽  
Polymerization Process ◽  
Mass Ratio ◽  
Nano Zinc Oxide ◽  
Nano Zinc

The copolymer of sodium polyacrylic acid and 2-acrylamide-2-methyl propane sulfonic acid (AMPS) was prepared by radical polymerization process, the effect of mass ratio of AA/AMPS on the viscosity of AA-AMPS copolymer were investigated. Results showed that when the mole ratio of AA/AMPS was 3:1, it had the least viscosity. The dispersion stability of synthesized AA-AMPS copolymer for nanozinc oxide was tested.

Basic zinc carbonate as a precursor in the solvothermal synthesis of nano-zinc oxide

2015 ◽  
Vol 86 ◽  
pp. 347-353 ◽  
Author(s):  
Alojz Anžlovar ◽  
Marjan Marinšek ◽  
Zorica Crnjak Orel ◽  
Majda Žigon
Keyword(s):  
Zinc Oxide ◽  
Solvothermal Synthesis ◽  
Zinc Carbonate ◽  
Nano Zinc Oxide ◽  
Nano Zinc
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