Effect of Various Metal Hydroxide Flame Retardants on the Rheological Properties of Asphalt Binder
Journal Title: Materials Science-Medžiagotyra - Year 2019, Vol 25, Issue 3
Abstract
Metal hydroxide has been widely used as flame retardant to reduce the hazards of tunnel fire, however, few researches investigate its effect on the rheological properties of asphalt binder systemically. This study explores and compares the effect and mechanisms of magnesium hydroxide (MH), aluminium hydroxide (ATH), hydrated lime (HL), and layer double hydroxides (LDHs) on the rutting resistance, anti-aging resistance, as well as the thermal cracking resistance of asphalt binder. Rotational viscosity (RV) test, dynamic shear rheometer (DSR) test, and bending beam rheometer (BBR) test are involved in the project. Test results indicate: (1) the addition of metal hydroxide generally improves the rutting resistance of asphalt binder during high temperatures due to the typical filler effect, while weakens the resistance to thermal cracking of binder at low temperatures because of the stress concentration; (2) HL and LDHs enhance the anti-aging resistance of asphalt binder; (3) LDHs modified binder, which is proved with better rheological properties, including great rutting resistance, anti-aging resistance and passable resistance to thermal cracking, is recommended for further use. However, the high procurement price is still a big obstacle for its wider application.
Authors and Affiliations
Lingzhu Gu, Tianhang Zhang, Kai Zhu, Daquan Tang, Ke Wu
Keywords
Related Articles
- EP ID EP615562
- DOI 10.5755/j01.ms.25.3.21572
- Views 54
- Downloads 0
Effect of Solution Heat Treatment and Artificial Aging on Compression Behaviour of A356 Alloy
Aluminium alloys are subjected to heat treatment to increase the strength and corrosion properties. This paper aims to study the effect of heat treatment on the compression behaviour of A356 alloy under quasi static cond...
Modification of Nife Layered Double Hydroxide and Photocatalytic Activity
Modifying materials by ions with multiple valence states is an effective way for enhancing their properties. NiFe layered double hydroxides (NiFe LDHs) were prepared by using a hydrothermal method. Efficient LDH photocat...
Effect of Sintering Temperature, Sm3+ Concentration and Excitation Wavelength on Luminescence Properties in Eu3+ Doped Strontium Tungstate Phosphors
The color-tunable SrWO4:0.20Eu3+, Sm3+ phosphors are successfully prepared by co-precipitation method at a low temperature (800 °C). These phosphors can be efficiently excited by near-ultraviolet and blue light. The phas...
Electrochemical and Tribological Properties of TiSiCN Coatings in Coolant
TiSiCN coatings were prepared using DC and RF magnetron co-sputtering system. The influence of target powers on phase structures, mechanical properties, tribological and electrochemical properties were studied. The resul...
A Novel Approach for Accelerated Fabrication of Calcium Hydroxyapatite Thin Films
In this study we demonstrate, that sol–gel route is suitable to quicker obtain calcium hydroxyapatite (Ca10(PO4)6(OH)2, CHAp) coatings on crystalline Si substrate by modified dip-coating technique. The substrate was dip-...