This study intends to improve the bond performance of the polypropylene fiber used as reinforcing fiber for concrete by changing its shape into double crimped type through the enhancement its fabrication process. The bond performance of such double crimped fiber is evaluated by applying the JCI SF-8 (dog method. The test results reveal that the double crimped fiber develops bond performance imp...

The project aims to study tensile softening behavior of fiber reinforced concrete .Concrete is very much weak in tension but by addition of randomly oriented short crimped steel fibers will change the behavior from brittle to ductile. In the present work, the steel fibers were added at the volume fraction, being 0%, 0.5%, 1%, 1.5% to the normal strength concrete and high strength concrete. The ...

To increase the applications of Natural Rubber Latex Modified Fiber Reinforced HighPerformance-Concrete (NRLMFRHPC) in India, greater understanding of NRLMFRHPC produced with locally available materials such as cement , Fine aggregates , coarse aggregates, Metakaolin and Crimped Steel fibers is essential. In the present investigation, NRLMFRHPC has been produced with locally available aggregate...

Reliable bond of steel fiber in concrete is a key problem relating to the reinforcing effect on matrix and for guide significance optimal design geometry mechanical properties fiber. In this paper, basis multi-indices evaluation single hooked-end fiber, indices synergistic different deformed fibers are proposed. The pull-out tests were carried out embedded mortar wet-sieved from self-compacting...

Experimental measurements of the Poisson's ratio in tendon and ligament tissue greatly exceed the isotropic limit of 0.5. This is indicative of volume loss during tensile loading. The microstructural origin of the large Poisson's ratios is unknown. It was hypothesized that a helical organization of fibrils within a fiber would result in a large Poisson's ratio in ligaments and tendons, and that...

In this research, the structural behavior of reinforced concrete brackets cast with containing different types fibers was studied. Seven samples corbels were and tested. One specimen without fiber as a reference, other made six at constant volume fraction (1% total volume). The used in research two materials: steel polyolefin. polyolefin fiber, five remaining samples, used. Straight, crimped, t...

Fabricating cementitious composites with sustainable materials represents an essential aspect in the recent developments construction section. On other hand, using fibers within binding matrix to enhance its strength properties is a familiar application and holds significant importance research community. In this investigation, Geopolymer which based on silica fume (micro-silica) blast furnace ...

PURPOSE The purpose of this in vitro study was to determine the effect of crimping and cementation on retention of veneered stainless steel crowns. METHODS One hundred twenty crowns, 90 from 3 commercially available brands of veneered stainless steel crowns (Dura Crown, Kinder Krown, and NuSmile Primary Crown) and 30 (plain) Unitek stainless steel crowns were assessed for retention. An orthod...

The carbon dioxide-assisted polymer compression method is used to create porous products with laminated fiber sheets that are crimped in the presence of dioxide. In this method, fibers oriented sheet-spread direction, and intersections upper lower crimped, leading several within product. This type orientation a material anisotropic. A dye solution was injected via syringe into product made poly...