Improving the Physical and Mechanical Properties of Asphalt Binder Material by Utilizing of Rubber Tires

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

The stiffness modulus of asphalt in hot id climatics was found to increase rapidly with pavemt age and loading rate this reflects the rapid hding and a complex change in the composition of the asphalt binder occurs due to high thermic susceptibility of the asphalt binder material in hot id zones of sever climate.Besids this there is an increase in traffic heavier loads and higer tire pressures, the chemical composition of asphalt binders material and their rheological and visco-elastic properties also having a great role on the performance of these the asphalt binder material, a higer performance pavemt requires asphalt that is less susceptible to high temprature ruttings or low temprature cracking and having sufficit bonding to stones aggregates. The durability of asphalt concrete is greatly influced by the viromtal changes during the ye betwe hot and cold tempratures and btwe day and night high temprature can soft the asphalt making the mix more suscebtiple to rutting on the other hand low winter tempratures can increase the stiffness of asphalt reduce the flexibility of the asphalt concrete inducing fatique failure and serious cracks which adversly affects the pavemt performanance the problem accetuated in hot id site The loss of flexibility of the binder material will make the asphaltic mix susceptible to shrinkage cracking in the lge temperature ranges that occur in these climates. For many yes, resechers and developmt chemists have experimted with modified bitum’s, of diffrt types . In the last thirty yes many resechers have looked at a wide spectrum of modifying material Resech continues in the quest to find materials that could hance the properties of asphalt mixes thus hancing pavemt performance and reducing road maintance costs. Addition of polymers has become common practice in several countries, with the main objective is improving flexibility and reducing thermal susceptibility of modified asphalt binders. There is growing interesting in asphalts modification with crumb rubber recycled from used tires, since this constitutes an important unique properties for asphalt improvemt. The rubber used to produce tires comprises a mixture of differt componts, of valuable gineering chacterstics, wh crumb rubber is incorporated. The behavior of modified asphalt-rubbers depds on several factors, such as, the origin, fabrication process and grain size, the type of base convtional binder used in the mixture, temperature and time of the mixing process or digestion., a convtional base binder material having a petration grade of 60/70 was mixed with rubber tires of (1-10 % by asphalt weight contts, was mixed for viable digestion times. The binder-rubber mixtures, produced using the wet process, were subjected to convtional tests, such as, petration, softing point, Brookfield viscosity. The objective of the prest work was to investigate the main chacteristics of crumb rubber that affect the physical and the flow and the mehanical properties of modified binders. The results and findings from the study shows that the rubber additive can be added up to 5 % by asphalt weight did improvemts in asphalt intrinsic chacerstics.

روابط وملفات

التعريف والنوع

رقم الوثيقة

f474373d-5f48-4982-9756-1f9093998ecd

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1644097_1.pdf

بيانات النشر

ألقاب المؤلفين

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اللغة

English

المصدر والدورية

اسم المصدر

Improving the Physical and Mechanical Properties of Asphalt Binder Material by Utilizing of Rubber Tires

المحتوى والصفحات

عدد الصفحات

0

كلمات الباحثين

Physical and Mechanical Properties, Rubber Tires

إشراف وإعداد

الإشراف

محمد الشتيوي بن عمر

الإعداد

إبراهيم سعد أبو دينة

الاقتباسات الببليوغرافية