scholarly journals Performance Characteristics of Epoxy Modified Open Graded Friction Course (OGFC) By Post-doping Methods

2021 ◽  
Vol 2076 (1) ◽  
pp. 012029
Author(s):  
Linyan Zhang ◽  
Yong Ma ◽  
Yanbin Zhao ◽  
Bo Li ◽  
Peifeng Li ◽  
...  
Keyword(s):  
Basalt Fiber ◽  
High Viscosity ◽  
Mixing Process ◽  
Friction Resistance ◽  
Epoxy Asphalt ◽  
Coefficient Of Permeability ◽  
Satisfactory Performance ◽  
Open Graded Friction Course ◽  
Suitable Amount ◽  
Temperature Crack

Abstract To improve drainage properties and increase driver’s safety in wet weather, epoxy modified Open Graded Friction Course (OGFC) by post-doping methods was proposed. The predominant focus of this paper evaluated the performances of epoxy modified Open Graded Friction Course (OGFC) such as rutting resistance at high-temperature, crack resistance at low temperature, friction, moisture resistance and coefficient of permeability. For comparison, the same NMAS Open friction course with epoxy asphalt which was supplied courtesy of ChemCo Systems Ltd and SK High-Viscosity Asphalt were cited. In addition, the harsh construction requirements and application limitations caused by the residence time of epoxy asphalt were solved by the post-mixing process which was produced by two steps, First step, component B of epoxy asphalt was produced in the backyard plant, then suitable amount of component A was added and mixed evenly while paving in site, affecting the holding time only in the two links of paving and rolling, and the time was easy to control. The results show that epoxy modified Open graded friction Course reinforced with Basalt fiber produced by post-mixing methods has good friction resistance and permeability while retaining satisfactory performance and mechanical properties.

Laboratory Study of Pavement Performance of Basalt Fiber-Modified Asphalt Mixture

2011 ◽  
Vol 266 ◽  
pp. 175-179 ◽  
Author(s):  
Yuan Xun Zheng ◽  
Ying Chun Cai ◽  
Ya Min Zhang
Keyword(s):  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Polyester Fiber ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Modified Asphalt ◽  
And Control ◽  
Temperature Crack

In order to discuss the effect of the basalt fiber on reinforcing pavement performance of asphalt mixtures, the optimum dosage of asphalt and fibers were studied by the method of Marshall test and rut test firstly. Then pavement performances of basalt fiber-modified asphalt mixtures were investigated through tests of high temperature stability, water stability and low temperature crack resistance, and compared with that of polyester fiber, xylogen fiber and control mixture. The testing results showed that the pavement performance of fiber-modified asphalt mixture are improved and optimized comparing with control asphalt mixture, and the performance of basalt fiber-modified asphalt mixture with best composition were excelled than those of polyester fiber and xylogen fiber.

Study of Road Property of Basalt Fiber Asphalt Concrete

2012 ◽  
Vol 238 ◽  
pp. 22-25 ◽  
Author(s):  
Yuan Zhao Chen ◽  
Zhen Xia Li
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Polyester Fiber ◽  
Pavement Performance ◽  
High Temperature Stability ◽  
Reference Mixture ◽  
Temperature Crack

In order to discuss the effectiveness of basalt fiber in reinforcing pavement performance of asphalt mixtures, the pavement performances of basalt fiber asphalt mixtures were investigated by tests of high temperature stability, water stability and low temperature crack resistance, and compared with the pavement performance of asphalt mixtures with polyester fiber and xylogen fiber, and that of reference mixture. The results show that pavement performance of fiber asphalt mixture are improved and optimized comparing with reference asphalt mixture, the performance of asphalt mixture with basalt fiber are excelled than those with polyester fiber and xylogen fiber while the dosage of fibers is keeping at the optimum.

Evaluation of Operational Properties of Composite Reinforcement Used in Concrete Structures

2014 ◽  
Vol 880 ◽  
pp. 57-61
Author(s):  
Viktor V. Rodevich ◽  
Artem A. Ovchinnikov ◽  
Elena V. Shilnikova
Keyword(s):  
Experimental Studies ◽  
Basalt Fiber ◽  
Lightweight Aggregate ◽  
Alkali Resistance ◽  
Lightweight Aggregate Concrete ◽  
Performance Study ◽  
Building Envelopes ◽  
Satisfactory Performance ◽  
High Alkali ◽  
Composite Reinforcement

The paper is devoted to the study of composite reinforcement made of glass fiber and basalt fiber, in particular their operational properties under the aggressive alkaline lightweight aggregate concrete environment. Their thermal resistance being sufficiently less than that of the regular steel composites they may be used in three-layered building envelopes to provide enhanced thermal properties. However there is lack of data and experimental results on the topic. Previous research indicated high alkali resistance of basalt fiber reinforcement, but there is a need in further studies. For the objective of the composite reinforcement that is used as flexible connectors for layer wall panels, a series of experimental studies. Research data have shown satisfactory performance study of flexible links.

TWO-DIMENSIONAL NONISOTHERMAL NUMERICAL ANALYSIS OF SPEED RATIO EFFECTS ON DISPERSION AND DISTRIBUTION IN HIGH-VISCOSITY PARTIALLY FILLED RUBBER MIXING

2019 ◽  
Vol 92 (1) ◽  
pp. 168-185
Author(s):  
Istiaque Ahmed ◽  
Hari Poudyal ◽  
Abhilash J. Chandy
Keyword(s):  
Heat Generation ◽  
Maximum Shear Stress ◽  
High Viscosity ◽  
Speed Ratio ◽  
Multiphase Model ◽  
Two Dimensional ◽  
Mixing Process ◽  
Rate Dependent ◽  
Arrhenius Function ◽  
Dynamics Simulations

ABSTRACT Two-dimensional, transient, and nonisothermal computational fluid dynamics simulations are conducted for high-viscosity rubber mixing in a two-wing rotor-equipped partially filled chamber of fill factor 75%. Calculations presented assess the effect of three differential speeds or speed ratios of the two rotors for the rubber mixing process: 1.0 (also called even speed), 1.125, and 1.5. A Eulerian multiphase model, the volume of fluid technique, is employed to simulate two different phases, rubber and air, by calculating the free surface between the two phases, in addition to the main governing equations such as the continuity, momentum, and energy equations. To characterize the non-Newtonian, highly viscous rubber under nonisothermal conditions, the shear rate–dependent Carreau-Yasuda model along with an Arrhenius function are employed. A set of massless particles is introduced into the chamber to calculate several parameters related to dispersive and distributive mixing characteristics. Specifically, the mixing index and maximum shear stress are analyzed for the dispersive nature, whereas cluster distribution index and length of stretch are calculated for investigating the distributive nature of the mixing process. Also, the temporal viscous heat generation rate, a good indication of the temperature rise throughout the domain, which is critical in the process and equipment design, is analyzed here. Results showed that the 1.125 speed ratio was the most efficient in terms of distributive mixing and heat generation.

Effect of Air Movement to Spray Development of Rapeseed Oil in Diesel Engine

2014 ◽  
Vol 554 ◽  
pp. 479-483
Author(s):  
Azwan Sapit ◽  
Mohd Azahari ◽  
Mas Fawzi ◽  
Amir Khalid ◽  
Bukhari Manshoor
Keyword(s):  
Rapeseed Oil ◽  
High Speed ◽  
High Viscosity ◽  
Spray Atomization ◽  
Main Body ◽  
Mixing Process ◽  
Important Process ◽  
Air Movement ◽  
Air Mixing ◽  
Atomization Characteristics

Fuel-air mixing is important process in diesel combustion. Generally there a two air mixing strategy, which is slow fuel – fast air mixing and fast fuel – slow air mixing. Air movement inside the combustion chamber greatly affect the mixing process and made effective fuel air mixing possible. Biomass fuel needs great help of mixing to atomization because the fuel has high viscosity and high distillation temperature. This study investigates the effect of air movement to spray development and atomization characteristics of rapeseed oil (RO). Optical observation of RO spray was carried out using shadowgraph photography technique and also using high speed camera. The results show that fast air movement effectively promotes RO spray atomization, with the RO spray expand outward from the main body through the whole spray length, which suggests fuel dispersion due to fast air movement.

Study on Influencing Factors of Flow-Ability of Cement Asphalt Mortar

2011 ◽  
Vol 243-249 ◽  
pp. 4240-4243 ◽  
Author(s):  
Yun Liang Li ◽  
Yi Qiu Tan ◽  
Yang Jian Ou ◽  
Jin Feng Wang
Keyword(s):  
Time Delay ◽  
Influencing Factors ◽  
Direct Contact ◽  
Mixing Process ◽  
Asphalt Emulsion ◽  
Cement Asphalt Mortar ◽  
Suitable Amount ◽  
Ca Mortar ◽  
Asphalt Mortar

Flow-ability of CA mortar is characterized by fluidity, and the effects of the CA mortar fluidity according to water, time, and feeding sequence are studied. Studies have shown that the amount of the used of water affects the fluidity most, in which the suitable amount of water is between 0.23 and 0.28. With the time delay, the flow-ability of CA mortar is reduced. When mixed with SBR latex, the process of decay of the flow-ability is significantly reduced. Feeding sequence has great effect on fresh mixed CA mortar. In the mixing process, to avoid asphalt emulsion and cement dry material in direct contact, the speed of demulsification is reduced, which can effectively increase the flow-ability of CA mortar.

Sign in / Sign up

Export Citation Format

Share Document