The self compacting concrete scc is the newest innovating category of high performance concrete. Self compacting concrete, fiber reinforcement, fly ash, workability, strength 1. Non destructive test on fiber reinforced self compacting concrete. Hybrid fiber reinforced selfcompacting concrete international. The experimental program consisted of twelve simply supported beams tested up to failure under fourpoint load. Experimental analysis of steel fiber reinforced self. Pdf study of a selfcompacting fiberreinforced concrete to be. Performance of glass fibre reinforced self compacting concrete. Mechanical behavior of selfcompacting reinforced concrete. Itwas shown that for thesamelengthanddiameter,crimpedendfibers can achievethesamepropertiesas straight fibers using 40 percent less fibers s. Fiberreinforced concrete smart materials and smart sensors aci fall 2011 convention october 16 20, cincinnati, oh aci web sessions antoine naaman, faci, is a professor in the department of civil and environmental engineering at the university of michigan. These include the compressive, tensile and flexural strength of concrete at various ages. Structural performance of self compacting fibre reinforced. The elimination of vibration for the compaction of concrete during placing through the use of selfcompacting concrete leads to.
Fibre reinforced self compacting concrete gfrscc is composed of cement, different sizes of coarse and fine aggregates, which integrate with distinct, uneven glass fibre. Mechanical properties of steel fiber reinforced self. Abstract unrivaled exhibitions of self compacting concrete scc in new state to accomplish a more uniform dispersion support the addition of fibers in concrete which is an inspiration for basic utilization of fiber fortified cement. For conventional concrete without steel fibers, although still an aspect under discussion, there are some commonly used durability indicators.
In this study, the fiber dosage was fixed at 6 kgm 3, and both self compacting concrete and conventional concrete were used to compare the influence of the positioning of the fibers. Self compacting concrete scc,crimped steel fibers,carbon fibers. Paper open access related content vibrated and self. This material is very good in making shapes on the front of any building and it is less dense than steel. Experimental study on flexural behaviour of glass fiber. Abstract the self compacting concrete scc is the newest innovating category of high performance concrete.
The paper presents an experimental study to investigate the effect of steel fiber sf on the mechanical behavior of self. Workability of hybrid fiber reinforced selfcompacting concrete. Reinforcement of selfcompacting concrete with short randomly distributed fibers can. Selfcompacting concrete is a brittle material with a low strain capacity. Fiberreinforced selfcompacting concrete frscc is a new type of concrete mix that can mitigate two opposing weaknesses. Optimized specifically for bridge columns, this composite flows under its own weight, completely filling the formwork and achieving full compaction without internal or external vibration.
It has been observed that the performance of self compacting fiber reinforced concrete scfrc was much better than that of the corresponding normal vibrated fiber reinforced concrete nvfrc. Fiber addition, however, increases the complexity of the mix design process, due to the strong perturbation effect that steel fibers cause on fresh concrete flow. Performance of steel fiber reinforced self compacting concrete. Pdf precast fiber reinforced self compacting concrete slabs. Selfcompacting concrete applications and advantages. Experimental study on fiber reinforced self compacting. Rheological behavior of fiber reinforced concrete in fresh state the transition of self compacting concrete scc to fiber reinforced self compacting concrete frscc is validated by rheological tests. Due to the incorporation of glass fibres in self compacting concrete brittle characteristic can be enriched.
Introduction to steel fiber reinforced concrete on. The effect of carbon steel fibers and polypropylene fibers in self compacting concrete was studied in this paper. Cracking of fiberreinforced selfcompacting concrete due. It has been observed that the performance of self compacting fiber reinforced concrete scfrc was much better than that of the corresponding normal. The results obtained in this study can be summarized as follows. This work is aimed to study the performance of steel fiber reinforced self compacting concrete as plain self compacting concrete is studied in depth but the fiber reinforced self compacting concrete is not studied to that extent. The use of concrete as a structural material is limited to certain extent due to the. Non destructive test on fiber reinforced self compacting concrete l. Most of the researches have been done on steel fiber reinforced concrete, but these kinds of fibers cause a sharp drop in fresh properties of concrete and reduce.
In addition, due to its intrinsic low porosity, scc usually has high performance. Research and applications, aci committees 544 and 237, 5168. Properties and applications offiber reinforced concrete. The performance of fiber reinforced self compacting concrete frscc under compression are investigated. The self compacting concrete is a concrete that can be placed and compacted by its own weight. Shahul hameed 2 1assistant professor, department of civil engineering p. Maximum fiber content and passing ability of selfconsolidating fiberreinforced concrete by s. Influence of fly ash on the properties of selfcompacting. Fibre reinforced concrete frc and selfcompacting concrete scc are two important types of novel concre tes.
However, for steel fiber reinforced self compacting concrete sfrscc literature is sparse. Jun 17, 2019 self compacting concrete produces resistance to segregation by using mineral fillers or fines and using special admixtures. The compressive, flexural, and split tensile strengths of the prepared concrete samples were investigated at ages of 7, 14, 28, and 90 days. Workability of hybrid fiber reinforced selfcompacting. The experimental program consisted of twelve simply.
Durability of steel fiber reinforced selfcompacting. Workability analysis of glass fiber reinforced self. Self consolidating concrete is required to flow and fill special forms under its own weight, it shall be flowable enough to pass through highly reinforced areas, and must be able to avoid aggregate segregation. Experimental research and numerical simulation article pdf available in journal of structural engineering 48 august 2008 with 937 reads. Self compacting concrete is considered a concrete that can be placed and compacted under its own weight without any vibration effort, assuring complete filling of formworks even when access is hindered by narrow gaps between reinforcement bars. Pdf workability and mechanical performance of steel. Sustainability and mechanical performance of fiber.
Maximum fiber content and passing ability of self consolidating fiber reinforced concrete by s. Optimum fiber content was governed by the workability requirement of the concrete mixture. Performance of polypropylene fiber reinforced selfcompacting. It offers very attractive economical and technical benefits, which can be further extended when combined with frc. Workability analysis of glass fiber reinforced self compacting concrete using jring test written by praveen. In general, its ductility is comparable with that of normal vibrated concrete.
However, the fibers are expected to reduce the flowing and passing ability of fresh. Influence of fiber distribution and orientation in the. A study on properties of hybrid fiber reinforced self compacting. Statistical and detailed analysis on fiber reinforced self. In order to produce thin precast elements, a self compacting concrete was prepared. Pdf this paper describes an experimental program designed to obtain a self compacting fiberreinforced concrete formulation based on the. Fiber reinforced self compacting concrete frscc is a new type of concrete mix that can mitigate two opposing weaknesses. Properties and applications offiber reinforced concrete 51 high aspect ratio were found to have improved effectiveness. Applying a self compacting approach to fiber reinforced concrete could improve fiber dispersion, reduce the risk of inadequate workability and facilitate placement and compaction. Rheological and mechanical characterization of fiber.
Mechanical properties and postcracking behavior of self. The results indicated that highvolume of fly ash can be used to produce steel fiber reinforced self compacting concrete, even though there is some increase in the concrete strength because of the use of steel fiber and highvolume of fly ash. In this study, the effects of fibers on fresh concrete properties and mechanical properties of self. Recent citations statistical analysis and preliminary study on the mix proportion design of self compacting steel fiber reinforced concrete xinxin ding et al. The self compacting concrete is a concrete that can. He is a member of aci committees 363, highstrength concrete. Behavior of self compacting concrete containing ladle. Fibre reinforced scc fibre reinforced self compacting concrete is considered as new technology for the construction industry.
The resulting material is, in this work, designated by steel fiber reinforced self compacting concrete sfrscc and, when compared to conventional concretes, presents. This research examines the most relevant parameters that influence the behavior of reinforced concrete corbels rc. The advantage of this mixture is the possibility of obtaining a new material combining the excellent properties. And also influence of glass fibers on fresh and hardened properties of scc is investigated. The presence of glass fibers in glass fiber reinforced self compacting concrete slabs have not improved any flexural strength.
Abstract self compacting concrete scc represents one of the most outstanding advances in concrete technology during the last decade. Prediction of stress development and cracking in steel fiber reinforced self compacting. This paper deals with the mix design and mechanical properties of self. Concrete overlays due to restrained shrinkage by j. Nandha engineering collegeautonomous, erode, india. The neutralization of steel fiber reinforced selfcompacting concrete under loads subjected to the simultaneous attack of carbonization, acid rain, acid rain and carbonization working together is. Steel fiber reinforced self compacting concrete sfrscc is a relatively recent material that combines the benefits of a self consolidated material with those derived from adding fibers to a cement based material, resulting a composite material that can be used in. Effect of macro polypropylene fiber and basalt fiber on impact resistance of basalt fiber. Tests involving various fiber proportions for a particular mix of.
Steel fiber utilized as a part of the self consolidating steel fiber reinforced concrete. Pullout behavior of steel fibers in selfcompacting concrete. The results indicated that highvolume of fly ash can be used to produce steel fiber reinforced self compacting concrete, even though there is some increase in the concrete strength because of the use of steel. An idealized homogeneous distribution of the fibers with such fibers crossing from side to side of the specimen was added to self compacting concrete. Performance of steel fiber reinforced self compacting.
Properties and applications offiber reinforced concrete faisal fouad wafa associate professor, civil engineering department, faculty ofengineering, king abdulaziz university, jeddah, saudi arabia. Aug 08, 2008 fiber addition, however, increases the complexity of the mix design process, due to the strong perturbation effect that steel fibers cause on fresh concrete flow. Glass fiber reinforced concrete gfrc or grc is a type of fiber reinforced concrete. Workability and mechanical performance of steel fiber reinforced self compacting concrete with fly ash. Abstract selfcompacting concrete scc represents one of the most outstanding advances in concrete technology during the last decade. The advantages associated to the addition of steel fibers to concrete mixes may be joined with the ones resulting from the selfcompacting ability concept in. Glass fibre reinforced concrete use in construction. International federation for structural concrete latest issue volume 21, issue 1. Sustainability and mechanical performance of fiber reinforced self compacting concrete frscc a. By using superplasticizers and mineral admixtures such as slag and fly ash, three sfrc of different fiber contents 0. Steel or synthetic fibers help to improve various mechanical properties, fire resistance and reduce plastic shrinkage of scc as well as to enhance the sustainability of a scc matrix 1621. In the present work, a mix design method is proposed to develop cost effective and high performance steel fiber reinforced self compacting concrete sfrscc. When manufacturing these elements, homogenously dispersed steel fibers instead of ordinary steelreinforcing mesh were added to the concrete mixture at a dosage of 10% by mass of cement. Since in this stage of the proposed mixdesign method for fiber reinforced selfcompacting concrete only the aggregates and fibers, if applicable are dealt with and the content of cement and cement substitutes is regarded as a part of the paste rheology optimization, it is believed that q 0.
Furthermore, the influence of bamboo fiber and limestone powder on the bfrscc will be assessed. Self compacting concrete produces resistance to segregation by using mineral fillers or fines and using special admixtures. More recently, researchers are developing fiber reinforced self compacting concrete, frscc, which consists in the addition of fibers typically, steel fibers or synthetic fibers to the scc composition. Experimental study on fiber reinforced self compacting concrete. Inclusion of relatively small amounts of fibre can adequately. The shear behavior of fiber reinforced self compacted concrete frscc deep beams was investigated. Durable fiber reinforced selfcompacting concrete sciencedirect. The addition of fibers to scc produces self compacting fiber reinforced concrete scfrc that not only has the fresh state benefits of scc but also has improved properties in the hardened state. Pdf selfcompacting concrete scc offers several economic and technical benefits. A study on mechanical properties of chopped fiber reinforced. Fiber reinforced concrete can be defined as a composite material consisting of mixtures of cement, mortar or concrete and discontinuous, discrete, uniformly dispersed suitable fibers.
Glass fiber concretes are mainly used in exterior building facade panels and as architectural precast concrete. The strength properties of fibre reinforced self compacting concrete. Self compacting concrete, fibers, compressive strength, flexure strength. Influence of glass fiber on fresh and hardened properties of self compacting concrete r bharathi murugan, m k haridharan, c natarajan et al. Pdf cracking of fiberreinforced selfcompacting concrete. Pdf steel fibre reinforced selfcompacting concrete. Abstract self compacting concrete scc represents one of the most outstanding advances in concrete. Mechanical properties of ultra high performance fiber. Prediction of stress development and cracking in steel fiberreinforced selfcompacting.
An experimental investigation was performed to study the rheological and mechanical behavior of two strength classes of the self compacting concrete reinforced with steel fibers. Durability, steel fiber reinforced self compacting concrete, corrosion. Fiber reinforced concrete are of different types and properties with many advantages. A study on mechanical properties of chopped fiber reinforced selfcompacting concrete vijay singh solanki1 rajiv kumar2 1assistant professor senior 2 bridge engineer 1,2department of civil engineering 1laxmi narain college of technology, bhopal 2msv international inc abstractthe objective of present research is to design of. In the present work, a mix design method is proposed to develop cost effective and high performance steel fiberreinforced selfcompacting concrete sfrscc. Fiber reinforced concrete types, properties and advantages. Influence of bamboo fiber and limestone powder on the. Fibrereinforced selfcompacting concrete frscc is a new building material that combines positive characteristics of workability of. However this technology has found wide acceptance amongst the construction industry. Results show that it is possible to produce ultra high performance fiber reinforced self compacting concrete in gaza strip using materials that are available at the local markets if. Fiber reinforced concrete frc is a new structural material which is gaining increasing importance. Moreover, with the outcome of new composites materials with improved mechanical properties and advanced cement matrices, such in the case of steel fiber reinforced self compacting concrete, the study of the fiber matrix interface assumes a new interest.
This research work investigates the fresh and hardened properties of fifteen different self compacting fiber reinforced concrete mixes produced using two different types and volume fractions of. In the present work the tensile behavior of a selfcompacting concrete reinforced with two hooked ends steel. Compared to fiber reinforced concrete frc, self compacting concrete scc is a relatively new type of concrete with high flowability and good cohesiveness. Self compacting hybrid fiber reinforced concrete composites. This study reports the results of high temperature effects on the properties of steel fiber reinforced selfcompacting concrete sfrscc fabricated by replacing cement with ground pumice powder. Fiber reinforced concrete is widely used due to its high ductility, energy absorbing capacity, and tensile strength. Concrete that must not be vibrated is a challenge to the building industry. In concrete industry, it is widely accepted that the conventional concrete mixes are face down to plastic shrinkage during the phase of setting and this can often lead to cracking. Using notched cylindrical specimens, fracture energy of steel fiber reinforced concrete was measured, and a new trilinear cohesive law. Najim and hall had done some researches about dynamic and mechanical properties of self compacting crumb rubber modified concrete najim and hall, 2012. To address this issue, this study developed a self compacting hybrid fiber reinforced concrete schyfrc composite.
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