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Evaluation of Forta fibers performance in hot asphalt mixture against concrete cover مقاله

نویسنده:

چکیده:

Today, the use of concrete fiber coatings is a common method worldwide due to the high speed implementation and thickness reduction of the reconstruction of concrete and asphaltic roads. These construction projects include concrete pavements including road surfaces, bridge decks, runways, parking lots and industrial floors. Fibers in concrete pavements, in addition to reducing the slab thickness and economical efficiency by controlling the shrinkage cracks and reducing the number of transverse joints, reduces the penetration of water into the pavement and leads to a reduction in maintenance costs. The important factors influencing this are the appearance of the shape and the geometry of the fibers, which is an important factor in the mechanical control of the fiber in concrete. This paper intends to evaluate the flexural strength and cracking strength of concrete made with different types and forms of polymeric fibers Specific Concrete (produced internally by the Sirjan Foundation of Knowledge) considering the applicability of concrete concretes in concrete applications. The analysis of the results obtained from the experiments show that the use of fibers increases the flexural strength and cracking resistance and the shape of fibers can improve these properties. One of The main breakdowns occurs in flexible pavements are the melting of asphalt layers, the most important of which are fatigue, which is caused by traffic and caused by the effects of successive temperature changes. Improving the flexural strength and increasing the strength of the asphaltic layers against fatigue from various methods including The use of various additives such as fillers, fibers and materials, nano-polymers in asphalt mixtures is possible. The results of the experiments showed that the fatigue behavior and performance of the armed mixture with the Forta fibers were significantly improved compared to mixture. Today, the use of polymer modifiers, fibers and nano-materials to improve the properties of bitumen and improve the performance of asphalt mixtures can be very effective, but relatively expensive due to the cost of implementing relatively rarely, the recycling of materials and their use as secondary materials in asphalt mixtures In addition to helping reduce costs, it can have beneficial effects on the environment. Laboratory research suggests that Forta fibers play a significant role in arsenal mixtures. Also, the mixture has the highest amount of additive with the best fatigue behavior The most important positive effect of adding fibers to concrete is the increased flexibility of the concrete and increased absorption capacity of the concrete. In general, arming of asphalt mixtures with a minimum amount of 1.5 kg of fiber per ton of asphalt increases elastic behavior, which increases the fatigue life of the asphaltic mixture.

خلاصه ماشینی:

Evaluation of Forta fibers performance in hot asphalt mixture against concrete cover Sajjad Kafashzadeh1*, Asadolah Jalal Zadeh2 and Mohammad Fadavi3 1- Professor of Civil Engineering, Islamic Azad University, Birjand Branch, Iran 2 bachelor of civil engineering،islamic azad university،zahdan branch 3 - master of civil engineering،road and transportation،payame noor university international center of asaluyeh Original Article: Received 20 Dec. 2017 Accepted 02 Jan. 2018 Published 30 March. The analysis of the results obtained from the experiments show that the use of fibers increases the flexural strength and cracking resistance and the shape of fibers can improve these properties. Improving the flexural strength and increasing the strength of the asphaltic layers against fatigue from various methods including The use of various additives such as fillers, fibers and materials, nano-polymers in asphalt mixtures is possible. In ultra thin fiber concrete processes, bending durability, crack width control and increased bending load of concrete pavement are key parameters in the design and selection of fiber consumption. UCT Journal of Research in Science, Engineering and Technology (View the image of this page)Table 3: Chemical composition of cement materials used (Knowledge-based Complex of Nanotail and Granular of In order to investigate and compare the effects of using specific types and geometry of concrete polymeric fibers and domestic production, four samples of different types of polymeric fibers manufactured inside the country Sirjan) with the names of Curta Twist Fiber, Curta Embas Fiber, Fiber Curta corrugated and curtatwist fiber of 1kg / m3 were used in concrete.

کلیدواژه ها:

Forta fibers ، Fatiogue cracks ، Asphalt mixture ، Asphalt polymeric ، Glass Fiber Ashpalt


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