کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
259362 | 503632 | 2012 | 8 صفحه PDF | دانلود رایگان |
This paper presents a research of abrasive resistance of classic concrete and micro-reinforced concrete with two types of polypropylene fibers. Water/cement factor was varied from 0.5 to 0.7, while the content (in%) of the remaining components remained constant. An accelerated test of abrasive erosion of concrete was performed on the equipment allowing the high-velocity jet of water/sand mixture to act on the surface of the test specimens. The research results demonstrate that the abrasive resistance of concrete is in an inverse function of the water/cement factor; the concretes with higher compressive strength and higher bending strength have also the higher abrasive resistance; the micro-reinforced concretes demonstrate higher abrasive resistance in comparison to the benchmark concrete.
► Abrasive resistance of concrete is reduced with the increase of water/cement ratio.
► Polypropylene fibers addition contributes to increase of concrete abrasive erosion resistance.
► Polypropylene fiber adding has no significant effects on compressive strength change.
► Polypropylene fiber addition contributes increase of concrete tensile strength.
► High compressive/tensile (at bending) strength concretes have high abrasive resistance.
Journal: Construction and Building Materials - Volume 27, Issue 1, February 2012, Pages 305–312