Waste rubber

Abfallerzeugnis, n. waste product. Abf everWertung,/. utilization of waste. Abfall-fett, n. waste fat or grease, -gummi, n. waste rubber, scrap rubber, -gut, n. waste material (to be treated for recovery), -hefe, /. waste yeast, -holz, n. waste wood, abfallig, a. falling off, sloping, etc. (see abfallen) deciduous adverse. 

Several authors have discussed the ion exchange potentials and membrane properties of grafted cellulose [135,136]. Radiation grafting of anionic and cationic monomers to impart ion exchange properties to polymer films and other structures is rather promising. Thus, grafting of acrylamide and acrylic acid onto polyethylene, polyethylene/ethylene vinyl acetate copolymer as a blend [98], and waste rubber powder [137,138], allows... 

Mechanical Properties of Thermoplastic Elastomer Composition with Varying Waste-Rubber Loading at Constant Rubber/Plastic Ratio of 70 30 (w/w)... 

Adam G., Sebenik A., Osredkar U., Ranogajec F., and Veksli Z. The possibility of using grafted waste rubber—photochemically induced grafting. Rubber Chem. TechnoL, 64, 133, 1991. 

A number of reviews are already available on the above subject. Rothemeyer [50] discussed the effects of grinding and sieving on the particle size, stmcture, and distribution of powders obtained from waste rubber and also studied the effects of different powders on the physical properties of the... 

Li, S., Lamminmaki, J., and Hanhi, K., Improvement of mechanical properties of rubber compounds using waste rubber/virgin rubber, Polym. Eng. Sci., 45, 1239, 2005. 

The product resulting from the treatment of waste rubber (flash, used tyres, etc.) by heat and chemical agents, which effect sufficient break down and softening so that the reclaim may be used as a compounding ingredient in fresh compound without excessive degradation of physical properties. 

Wang, L.K. McGinnis, W.C. Wang, M.H.S. Ana/yjA and Formulation of Combustible Components in Wasted Rubber Tires U.S. Department of Commerce, National Technical Information Service Springfield, VA, 1985 Report No. PB86-169281/AS, 1985 39 p. 

Experimental Study on Application of Waste Rubber in Bitumen Composite... 

The high-modulus tire cords within waste rubber have desirable strength retention properties under long-term exposure to aggressive environment. Properties of this tire threads were shown in table 3. 

In Figure 2 we can observe the variations of tensile strain versus number of cycle for failure. As it can be seen, waste tire reinforeement ean decrease the tensile strain in contrast to non- reinforced sample. In certain bitumen percent, the tensile strain in reinforced sample is less than the tensile strain in non- reinforced specimen. It can be seen that the number of cycle for failure in reinforced sample is more than non - reinforeed sample. Therefore, the reduction in fatigue cracks in reinforced specimen is expected. In samples with 5 and 6 percents of bitumen, the number of cycles for failure is increased signifieantly. It should be noted that with 5 percent of bitumen the application of waste rubber ean cause a better cohesion between aggregates and bitumen. While using 4% bitumen the difference between tensile strain in reinforced specimen and non- reinforced sample is poor. This is because of percent reduction in the bitumen quantity. However, for 5 percent bitumen this difference is noticeable. Although the bitumen percent used is not optimum, therefore, the waste rubber reinforcement, lead to the decrease in tensile strain in contrast to non - reinforced sample. The result has shown in Figure 2. 

Figure 3 indicate the stififness modulus versus bitumen percent. As it can be seen clearly, the waste rubber reinforcement can improve the stiffness modulus, in contrast to non-reinforced samples. According to the experiments with certain bitumen percent, the value of stiffness modulus in reinforced specimen is more than the value of stiffness modulus in non-reinforced specimen, specially, when bitumen percent increased the cohesion between waste rubber, talus material and bitumen will increase, therefore, difference between stiffness... 

In figure 4 we can observe the variations of stiffness modulus versus temperature at 6% bitumen. As it can be seen, the waste rubber reinforcement can cause better characters in asphaltic samples. 

The waste rubber reinforcement can increase the stiffness modulus. It is clear that the reinforced sample can show a high stiffness than non-reinforced one. 

As the temperature decreased, the cohesion between waste rubber, aggregates, material and bitumen increased. Therefore, by decreasing temperature, the stiffness modulus is decreased as well. Meanwhile, stiffness modulus in temperature of 25 °c is more than 40°c. This different between stiffness modulus at 25 °c and 40°c is about 53%. 

Figure 5 shows linear regression analysis of the ITFT result. As it can be seen obviously, regressions determine fatigue fanction for the asphalt mixtures. In figure 9 is shown that reinforced specimen s slope is more than nomeinforced specimens. Away from waste rubber reduction strain in reinforced specimens regression equation for reinforced specimen is... 

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