مهندسی نساجی گیلان:. گیل تکس

سایت تخصصی نساجی و پوشاک

مهندسی نساجی گیلان:. گیل تکس

سایت تخصصی نساجی و پوشاک

On the Reinforcement of Steel-Slag Asphalt-Concrete Structures U


On the Reinforcement of Steel-Slag Asphalt-Concrete Structures Using Poly Propylene Fibers

Sayyed MAHDI Abtahi, Reza Khodadadi , Saeed Puladsaz , Ehsan Tavakkoland Sayyed MAHDI Hejazi

Abstract

Asphalt Concrete (AC), a mixture of bitumen and aggregates, is a sensitive structure compared with other civil configurations. So, Scientists and engineers are constantly trying to improve the performance of asphalt pavements. Generally Fibers and Polymers are two important cases used in this way. But the most popular bitumen modification

technique is polymer modification. However, it has been claimed that among various modifiers for asphalt, fibers have gotten much attention for their excellent improvement effects. On the other hand; Steel Slag is the major byproduct from the conversion of iron to steel. Recently; it has evolved as an ideal aggregate in AC Structures because of its admirable mechanical properties. Therefore the aim of this paper has been concentrated to investigate the effect of Poly Propylene, PP, fibres on the mechanical properties of asphalt- concrete made from steel slag. This innovative mixture was evaluated by Marshall and Specific Gravity Tests. Thus it was found that using steel slag aggregates improved optimized bitumen content, stability, flow and specific gravity. Fiber attendance enhanced stability while flow declined in both cases (steel slag and conventional aggregates). Specific gravity did not significantly change. Finally, Dunnet Test, a novel statistical test, was employed to evaluate data and to compare different treatments.

Keywords: Asphalt Concrete, Reinforcement, Poly Propylene Fibres, Dunnet Test.


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