Study On Anchorage Properties Of Polypropylene Fiber Reinforced Self-compacting Concrete

The definition of self-compacting concrete is as following: compared with the ordinary concrete, it has the ability of anti-segregation and can fill the whole template without any vibration to reach the degree of saturation. After mixing the anti-cracking light fiber with the self-compacting concrete which has good mechanical property, it will produce the fiber reinforced self-compacted concrete, with both function of both fiber reinforced concrete and self-compacting concrete.With the developing of technology, people have higher demand of construction material. All the scholars are concentrating on the fiber reinforced self-compacted concrete, and the research has already started. For the moment, people lack the deep analysis on the performance of the fiber reinforced self-compacted concrete, such as bonding strength, on which few scholars are doing the investigation. We need to make deeper research in order to know the performance of the new material and put it into the daily production.This article is mainly about the influence of polypropylene on the bonding performance of different rebars and self-compacting concrete. According to the specification and information, we calculate the mix proportion of self-compacting concrete, and add polypropylene fiber with different lengths like 12-19 mm and reticular fiber with fixed length, then compare various effects caused by the different volume of 0.05%~0.2%. By doing the trial and adjusting each mix proportion of fiber, we use the special test equipment such as slump cone to test the construction performance such as the mobility and passing quality to meet the performance demand of self-compacting concrete. After testing the performance of mechanical property such as compressive strength, anti-breaking strength, and elastic modulus of hardened fiber concrete test block, we analyze the influence of fiber. Finally, we choose the better mix proportion to design and pour pull-out specimen. Besides we add the parameters of different rebars to make the experimental research about the bonding performance between fiber and reinforced concrete, which can be the reference for theoretical analysis.