scholarly journals The Effect of Crumb Rubber Particle Size to the Optimum Binder Content for Open Graded Friction Course

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Mohd Rasdan Ibrahim ◽  
Herda Yati Katman ◽  
Mohamed Rehan Karim ◽  
Suhana Koting ◽  
Nuha S. Mashaan
Keyword(s):  
Particle Size ◽  
Rubber Particle ◽  
Mesh Size ◽  
Crumb Rubber ◽  
Binder Content ◽  
Air Voids ◽  
Porous Asphalt ◽  
The Road ◽  
Open Graded Friction Course

The main objective of this paper is to investigate the relations of rubber size, rubber content, and binder content in determination of optimum binder content for open graded friction course (OGFC). Mix gradation type B as specified in Specification for Porous Asphalt produced by the Road Engineering Association of Malaysia (REAM) was used in this study. Marshall specimens were prepared with four different sizes of rubber, namely, 20 mesh size [0.841 mm], 40 mesh [0.42 mm], 80 mesh [0.177 mm], and 100 mesh [0.149 mm] with different concentrations of rubberised bitumen (4%, 8%, and 12%) and different percentages of binder content (4%–7%). The appropriate optimum binder content is then selected according to the results of the air voids, binder draindown, and abrasion loss test. Test results found that crumb rubber particle size can affect the optimum binder content for OGFC.

scholarly journals Pavement and Noise Reduction Performance of Open-Graded Asphalt Friction Course Improved by Waste Tire Crumb Rubber

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Ya Wang ◽  
Xianguang Wang ◽  
Liwen Zhang
Keyword(s):  
Noise Reduction ◽  
Resilient Modulus ◽  
Rubber Particle ◽  
Asphalt Mixture ◽  
Crumb Rubber ◽  
Test Results ◽  
The Road ◽  
Open Graded Friction Course ◽  
Road Performance ◽  
Reduction Effect

To further reveal the road performance and noise reduction performance of open-graded friction course (OGFC), the crumb rubber prepared by adding waste tires were considered, and the performance requirements of the material were put forward. To avoid the influence of rubber particle swelling on aggregate, the special gradation and mix proportion of OGFC mixture were designed, and the particle size of 4.75 mm was proposed as the control size. The test results show that the aggregate forms a good embedded structure. The resilient modulus, deformation performance, and fatigue performance of R-OGFC asphalt mixture with different crumb rubber contents were studied. According to the test results, the rubber particle content under the best road performance and noise reduction effect was proposed. The results show that, after adding a certain amount of crumb rubber, the performance of asphalt mixture has been greatly improved, especially the dynamic stability has been improved by 84%. Although the resilient modulus has decreased by 10%, the creep performance has decreased by 37%, and the fatigue life has decreased by 31% (2% rubber content), the noise reduction can reach 3.6–8.6 dB, and the noise reduction performance is significant. This shows that the best content of rubber particles is between 1.5% and 2%, and the R-OGFC mixture modified by rubber has a good application prospect.

scholarly journals Investigation of the Formation Mechanism and Environmental Risk of Tire—Pavement Wearing Waste (TPWW)

2021 ◽  
Vol 13 (15) ◽  
pp. 8172
Author(s):  
Kechen Wang ◽  
Xiangyu Chu ◽  
Jiao Lin ◽  
Qilin Yang ◽  
Zepeng Fan ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Organic Contaminants ◽  
Asphalt Mixture ◽  
Fine Fraction ◽  
Crumb Rubber ◽  
Environmental Benefit ◽  
The Road ◽  
Open Graded Friction Course ◽  
Volatile Alkanes ◽  
Physical And Chemical

Tire—pavement interaction behaviours result in large amounts of wearing waste matter, which attaches to the surface of the pavement and is directly exposed to the surrounding environment. This kind of matter imposes a great challenge to the environment of the road area. The current study is devoted to carrying out a comprehensive investigation of the formation mechanism of tire—pavement wearing waste (TPWW), as well as the resulting environmental risks. A self-developed piece of accelerated polishing equipment, the Harbin advanced polishing machine (HAPM), was employed to simulate the wearing process between vehicle tires and pavement surfaces, and the TPWW was collected to conduct morphological, physical, and chemical characterisations. The results from this study show that the production rate of TPWW decreases with the increase in polishing duration, and the coarse particles (diameters greater than 0.425 mm) account for most of the TPWW obtained. The fine fraction (diameter smaller than 0.425 mm) of the TPWW comprises variously sized and irregularly shaped rubber particles from the tire, as well as uniformly sized and angular fine aggregates. The environmental analysis results show that volatile alkanes (C9–C16) are the major organic contaminants in TPWW. The Open-Graded Friction Course (OGFC) asphalt mixture containing crumb rubber as a modifier showed the highest risk of heavy metal pollution, and special concern must be given to tire materials for the purpose of improving the environmental conditions of road areas. The use of polyurethane as a binder material in the production of pavement mixtures has an environmental benefit in terms of pollution from both organic contaminants and heavy metals.

scholarly journals Partial replacement of conventional fine aggregate with crumb tyre rubber in structural concrete – effect of particle size on compressive strength and time dependent deformations

2018 ◽  
Vol 199 ◽  
pp. 11002
Author(s):  
Kudzai Mushunje ◽  
Mike Otieno ◽  
Yunus Ballim
Keyword(s):  
Particle Size ◽  
Compressive Strength ◽  
Creep Behaviour ◽  
Rubber Particle ◽  
Crumb Rubber ◽  
Target Strength ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Structural Applications ◽  
Shrinkage And Creep

This paper presents results of a study into the effects of truck tyre crumb rubber particle size, as fine aggregate, on the compressive strength, shrinkage and creep behaviour of structural rubberised concrete. The study is motivated by a growing interest in the use of concrete with waste tyre rubber particles, rubberised concrete, for structural applications. Three tyre crumb rubber sizes (2.36, 1.18 and 0.425 mm) were used to replace 10% by volume of fine mineral aggregates to produce concrete with a target strength of 30 MPa. The concrete was cast water-cured for 28 days and tested for shrinkage and creep for 180 days. Half of the shrinkage and creep samples were sealed with a bitumen seal to prevent drying during testing. Results show a general a decrease in compressive strength with reduction in crumb rubber size. The strength decreases by 22%, 23% and 27% for the 2.36, 1.18 and 0.425 mm mix respectively. Preliminary results show a general increase in both shrinkage and creep deformations in both drying and sealed conditions. The observed increases were checked against the limits provided in design codes to assess the applicability of the material for structural purposes.

Study of Devulcanised Crumb Rubber-Peat Bio-Based Composite for Environmental Applications

2019 ◽  
Vol 799 ◽  
pp. 148-152 ◽  
Author(s):  
Vjaceslavs Lapkovskis ◽  
Viktors Mironovs ◽  
Kristine Irtiseva ◽  
Dmitri Goljandin
Keyword(s):  
Particle Size ◽  
Composite Material ◽  
Oil Spill ◽  
Rubber Particle ◽  
Crumb Rubber ◽  
Raw Material ◽  
Environmental Applications ◽  
Porous Substrate ◽  
Spilled Oil ◽  
Final Composite

A proper recycling and secondary reuse of end-of-life car tires (ELTs) remain an important issue for many regions. Devulcanised crumb rubber as a product of ELT recycling could be used for very different applications, including site remediation by spilled oil products. In current paper a development of new bio-based composite material containing devulcanised crumb rubber and cenospheres is suggested. Designed bio-based composite can be used as a oil spill adsorbent, material for civil engineering, and as a raw material for further modification by introduction of ferromagnetic components. Homogenised peat with peat content 14.0 ± 1.5 wt%, particle size 0.01 – 0.5 mm used as a natural bio-based binder. Devulcanised crumb rubber particle size 1.0 – 4.0 mm was used as a porous substrate. Designed compositions contained 5, 10, 15, 20 wt% (before drying) of devulcanised crumb rubber. Cenospheres have duplex function for designed composite: lightweight additive that makes final product floatable, and at the same time minimises shrinkage of dried product. It was found that devulcanised crumb rubber reduces density of final composite and adding open porosity. Developed bio-based composites could be manufactured in granules by drum granulation technique for further environmental applications. Formability and apparent density of bio-based composite are studied.

scholarly journals Multi-Response Optimization of Porous Asphalt Mixtures Reinforced with Aramid and Polyolefin Fibers Employing the CRITIC-TOPSIS Based on Taguchi Methodology

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3789 ◽  
Author(s):  
Slebi-Acevedo ◽  
Pascual-Muñoz ◽  
Lastra-González ◽  
Castro-Fresno
Keyword(s):  
Mechanical Performance ◽  
Signal To Noise Ratio ◽  
Binder Content ◽  
Fiber Content ◽  
Performance Criteria ◽  
Taguchi Methodology ◽  
Air Voids ◽  
Porous Asphalt ◽  
Particle Loss ◽  
Control Factors

For the optimum design of a Porous Asphalt (PA) mixture, different requirements in terms of functionality and durability have to be fulfilled. In this research, the influence of different control factors such as binder type, fiber content, and binder content were statistically investigated in terms of multiple responses such as total air voids, interconnected air voids, particle loss in dry conditions, particle loss in wet conditions, and binder drainage. The experiments were conducted based on a Taguchi L18 orthogonal array. The best parametric combination per each response was analyzed through signal to noise ratio values. Multiple regression models were employed to predict the responses of the experiments. As more than one response is obtained, a multi-objective optimization was performed by employing Criteria Importance through Criteria Inter-Correlation (CRITIC) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methodologies. The weights for the selection of the functional and mechanical performance criteria were derived from the CRITIC approach, whereas the ranking of the different experiments was obtained through the TOPSIS technique. According to the CRITIC-TOPSIS based Taguchi methodology, the optimal multiple-response was obtained for a polymer modified binder (PMB) with fiber and binder contents of 0.15% and 5.0%, respectively. In addition, good results were obtained when using a conventional 50/70 penetration grade binder with a 5.0% binder content and 0.05% fiber content.

Effect of Crumb Rubber Particle Size and Content on Properties of Crumb Rubber Modified (CRM) Asphalt

2011 ◽  
Vol 99-100 ◽  
pp. 955-959 ◽  
Author(s):  
Wei Dong Cao ◽  
Shu Tang Liu ◽  
Xin Zhuang Cui ◽  
Xiao Qing Yu
Keyword(s):  
Particle Size ◽  
High Temperature ◽  
Reaction Time ◽  
Reaction Temperature ◽  
Rubber Particle ◽  
Crumb Rubber ◽  
Particle Sizes ◽  
Test Results

Effects of crumb rubber of different particle sizes (20mesh, 40mesh, 60mesh, 80mesh and120mesh) and contents (10%, 15% and 20% by weight of the total of CRM asphalt) on the properties of CRM asphalt and change rule of performance of CRM asphalt with reaction temperature and time were studied in laboratory. The results indicate that CRM asphalt has the best performance when the particle size of crumb rubber used is 80 mesh and the content is 15%. The performance of CRM asphalt is strongly depended on reaction temperature and time. When reaction temperature is higher than 200°C and time more than 60 minutes, the viscosity of CRM asphalt significantly decline with reaction temperature rising and time delaying. The performance of CRM asphalt starts aging when reaction time more than 4 hours at high temperature. Based on test results, some suggestions for production and application of CRM asphalt are put forward.

Influence of crumb rubber particle size and SBS structure on properties of CR/SBS composite modified asphalt

2020 ◽  
Vol 235 ◽  
pp. 117517 ◽  
Author(s):  
Chengduo Qian ◽  
Weiyu Fan ◽  
Guoming Yang ◽  
Ling Han ◽  
Baodong Xing ◽  
...  
Keyword(s):  
Particle Size ◽  
Rubber Particle ◽  
Crumb Rubber ◽  
Modified Asphalt

scholarly journals Effect of Synthetic Fibers and Hydrated Lime in Porous Asphalt Mixture Using Multi-Criteria Decision-Making Techniques

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 675 ◽  
Author(s):  
Carlos J. Slebi-Acevedo ◽  
Pedro Lastra-González ◽  
Miguel A. Calzada-Pérez ◽  
Daniel Castro-Fresno
Keyword(s):  
Decision Making ◽  
Optimization Problem ◽  
Hydrated Lime ◽  
Binder Content ◽  
Asphalt Mixtures ◽  
Multi Criteria Decision Making ◽  
Multiple Responses ◽  
Air Voids ◽  
Porous Asphalt ◽  
Particle Loss

Porous asphalt is a type of mixture characterized by having high air void percentages that offers multiple benefits when used in wearing courses in terms of driving safety, water flow management, and noise reduction. However, the durability of porous asphalt (PA) mixtures is significantly shorter when compared to dense-graded asphalt mixtures. This study investigated the impact of polyolefin–aramid fibers and hydrated lime in the functional and mechanical performance of porous asphalt mixtures. A parametric study based on the concept of design of experiments was carried out through the Taguchi methodology. Accordingly, an experimental design was conducted based on the L18 full factorial orthogonal array. Three control factors—fiber content, binder content, and filler type—were included at various levels, and multiple responses including total air voids, interconnected air voids, particle loss in dry conditions, particle loss in wet conditions, and binder drainage were assessed experimentally. Signal-to-noise ratios were calculated to determine the optimal solution levels for each control factor for the multiple responses. In the second phase of the research, multi-criteria decision-making techniques—namely, criteria importance through inter-criteria correlation and weighted aggregated sum product assessment—were used to transform the multiple-response optimization problem into a single-unique optimization problem and to elaborate a preference ranking among all the mixture designs. The most significant levels for acquiring the optimum overall response value were found to be 0.05% for fiber content and 5.00% for binder content and mixed filler with hydrated lime.

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