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. 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. 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. 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. An idealized homogeneous distribution of the fibers with such fibers crossing from side to side of the specimen was added to self compacting concrete. Compared to fiber reinforced concrete frc, selfcompacting concrete scc is a relatively new type of concrete with high flowability and good cohesiveness. 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. Workability analysis of glass fiber reinforced self. Pdf steel fibre reinforced selfcompacting concrete.
Workability analysis of glass fiber reinforced self compacting concrete using jring test written by praveen. He is a member of aci committees 363, highstrength concrete. Pdf workability and mechanical performance of steel. 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. Hybrid fiber reinforced selfcompacting concrete international. And also influence of glass fibers on fresh and hardened properties of scc is investigated.
Influence of fly ash on the properties of selfcompacting. In general, its ductility is comparable with that of normal vibrated concrete. Pdf this paper describes an experimental program designed to obtain a self compacting fiberreinforced concrete formulation based on the. To address this issue, this study developed a self compacting hybrid fiber reinforced concrete schyfrc composite. This material is very good in making shapes on the front of any building and it is less dense than steel. The performance of fiber reinforced self compacting concrete frscc under compression are investigated. Maximum fiber content and passing ability of self consolidating fiber reinforced concrete by s. 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. Fiber reinforced concrete types, properties and advantages.
In order to produce thin precast elements, a self compacting concrete was prepared. 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. Abstract the self compacting concrete scc is the newest innovating category of high performance concrete. These include the compressive, tensile and flexural strength of concrete at various ages. Structural performance of self compacting fibre reinforced. It has been observed that the performance of self compacting fiber reinforced concrete scfrc was much better than that of the corresponding normal. Properties and applications offiber reinforced concrete faisal fouad wafa associate professor, civil engineering department, faculty ofengineering, king abdulaziz university, jeddah, saudi arabia. Self compacting concrete produces resistance to segregation by using mineral fillers or fines and using special admixtures. The shear behavior of fiber reinforced self compacted concrete frscc deep beams was investigated. 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. Using notched cylindrical specimens, fracture energy of steel fiber reinforced concrete was measured, and a new trilinear cohesive law. For conventional concrete without steel fibers, although still an aspect under discussion, there are some commonly used durability indicators. Pdf selfcompacting concrete scc offers several economic and technical benefits. Properties and applications offiber reinforced concrete.
The experimental program consisted of twelve simply. Experimental study on fiber reinforced self compacting. Experimental analysis of steel fiber reinforced self. Durability, steel fiber reinforced self compacting concrete, corrosion.
The self compacting concrete is a concrete that can. In the present work, a mix design method is proposed to develop cost effective and high performance steel fiber reinforced self compacting concrete sfrscc. 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. By using superplasticizers and mineral admixtures such as slag and fly ash, three sfrc of different fiber contents 0. Statistical and detailed analysis on fiber reinforced self. It offers very attractive economical and technical benefits, which can be further extended when combined with frc. 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. Compared to fiber reinforced concrete frc, self compacting concrete scc is a relatively new type of concrete with high flowability and good cohesiveness.
Non destructive test on fiber reinforced self compacting concrete l. Najim and hall had done some researches about dynamic and mechanical properties of self compacting crumb rubber modified concrete najim and hall, 2012. 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. 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. Concrete overlays due to restrained shrinkage by j.
Properties and applications offiber reinforced concrete 51 high aspect ratio were found to have improved effectiveness. Shahul hameed 2 1assistant professor, department of civil engineering p. A study on mechanical properties of chopped fiber reinforced. Pullout behavior of steel fibers in selfcompacting concrete. 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.
The self compacting concrete is a concrete that can be placed and compacted by its own weight. Fiber reinforced concrete are of different types and properties with many advantages. 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. In this study, the effects of fibers on fresh concrete properties and mechanical properties of self. Fibre reinforced concrete frc and selfcompacting concrete scc are two important types of novel concre tes. The elimination of vibration for the compaction of concrete during placing through the use of selfcompacting concrete leads to.
The presence of glass fibers in glass fiber reinforced self compacting concrete slabs have not improved any flexural strength. Glass fiber reinforced concrete gfrc or grc is a type of fiber reinforced concrete. 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. Performance of polypropylene fiber reinforced selfcompacting. Tests involving various fiber proportions for a particular mix of.
Fibre reinforced scc fibre reinforced self compacting concrete is considered as new technology for the construction industry. This paper deals with the mix design and mechanical properties of self. The advantage of this mixture is the possibility of obtaining a new material combining the excellent properties. Rheological and mechanical characterization of fiber. Influence of glass fiber on fresh and hardened properties of self compacting concrete r bharathi murugan, m k haridharan, c natarajan et al. Applying a self compacting approach to fiber reinforced concrete could improve fiber dispersion, reduce the risk of inadequate workability and facilitate placement and compaction. Compressive strength was observed as self compacting fiber reinforced concrete of 0. Experimental research and numerical simulation article pdf available in journal of structural engineering 48 august 2008 with 937 reads. Fiber reinforced concrete frc is a new structural material which is gaining increasing importance. Fiber reinforced self compacting concrete frscc is a new type of concrete mix that can mitigate two opposing weaknesses. Behavior of self compacting concrete containing ladle.
Due to the incorporation of glass fibres in self compacting concrete brittle characteristic can be enriched. This research examines the most relevant parameters that influence the behavior of reinforced concrete corbels rc. A study on properties of hybrid fiber reinforced self compacting. Cracking of fiberreinforced selfcompacting concrete due. Prediction of stress development and cracking in steel fiberreinforced selfcompacting.
The results obtained in this study can be summarized as follows. 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. The compressive, flexural, and split tensile strengths of the prepared concrete samples were investigated at ages of 7, 14, 28, and 90 days. Reinforcement of selfcompacting concrete with short randomly distributed fibers can. Self compacting hybrid fiber reinforced concrete composites. However this technology has found wide acceptance amongst the construction industry. 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. Recent citations statistical analysis and preliminary study on the mix proportion design of self compacting steel fiber reinforced concrete xinxin ding et al. 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. The use of concrete as a structural material is limited to certain extent due to the. 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. 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. Abstract self compacting concrete scc represents one of the most outstanding advances in concrete.
Selfcompacting concrete applications and advantages. Optimum fiber content was governed by the workability requirement of the concrete mixture. Performance of steel fiber reinforced self compacting concrete. Research and applications, aci committees 544 and 237, 5168. 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. Selfcompacting fiber reinforced concrete request pdf. In the present work, a mix design method is proposed to develop cost effective and high performance steel fiberreinforced selfcompacting concrete sfrscc. Mechanical behavior of selfcompacting reinforced concrete. 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. Concrete that must not be vibrated is a challenge to the building industry. The resulting material is, in this work, designated by steel fiber reinforced self compacting concrete sfrscc and, when compared to conventional concretes, presents.
Nandha engineering collegeautonomous, erode, india. Paper open access related content vibrated and 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. The effect of carbon steel fibers and polypropylene fibers in self compacting concrete was studied in this paper. Sustainability and mechanical performance of fiber. Influence of bamboo fiber and limestone powder on the. Mechanical properties of ultra high performance fiber. Workability and mechanical performance of steel fiber reinforced self compacting concrete with fly ash. Jun 17, 2019 self compacting concrete produces resistance to segregation by using mineral fillers or fines and using special admixtures. Steel fiber utilized as a part of the self consolidating steel fiber reinforced concrete. Durability of steel fiber reinforced selfcompacting.
Performance of glass fibre reinforced self compacting concrete. Itwas shown that for thesamelengthanddiameter,crimpedendfibers can achievethesamepropertiesas straight fibers using 40 percent less fibers s. Self compacting concrete, fiber reinforcement, fly ash, workability, strength 1. Self compacting concrete scc,crimped steel fibers,carbon fibers. Pdf study of a selfcompacting fiberreinforced concrete to be. Maximum fiber content and passing ability of selfconsolidating fiberreinforced concrete by s. Pdf cracking of fiberreinforced selfcompacting concrete. Experimental study on fiber reinforced self compacting concrete. Fiber reinforced concrete is widely used due to its high ductility, energy absorbing capacity, and tensile strength. However, the fibers are expected to reduce the flowing and passing ability of fresh. Introduction to steel fiber reinforced concrete on.
Fiberreinforced selfcompacting concrete frscc is a new type of concrete mix that can mitigate two opposing weaknesses. Mechanical properties of steel fiber reinforced self. Workability of hybrid fiber reinforced selfcompacting concrete. Influence of fiber distribution and orientation in the. Glass fiber concretes are mainly used in exterior building facade panels and as architectural precast concrete. Durable fiber reinforced selfcompacting concrete sciencedirect.
Effect of macro polypropylene fiber and basalt fiber on impact resistance of basalt fiber. 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. Prediction of stress development and cracking in steel fiber reinforced self compacting. The strength properties of fibre reinforced self compacting concrete. Mechanical properties and postcracking behavior of self. Abstract self compacting concrete scc represents one of the most outstanding advances in concrete technology during the last decade. Inclusion of relatively small amounts of fibre can adequately.
Experimental study on flexural behaviour of glass fiber. Self compacting concrete, fibers, compressive strength, flexure strength. In the present work the tensile behavior of a selfcompacting concrete reinforced with two hooked ends steel. 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.
Performance of steel fiber reinforced self compacting. Non destructive test on fiber reinforced self compacting concrete. Workability of hybrid fiber reinforced selfcompacting. Pdf precast fiber reinforced self compacting concrete slabs.
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. The self compacting concrete scc is the newest innovating category of high performance concrete. Fibre reinforced self compacting concrete gfrscc is composed of cement, different sizes of coarse and fine aggregates, which integrate with distinct, uneven glass fibre. 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. Glass fibre reinforced concrete use in construction. Furthermore, the influence of bamboo fiber and limestone powder on the bfrscc will be assessed. 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. Abstract selfcompacting concrete scc represents one of the most outstanding advances in concrete technology during the last decade. International federation for structural concrete latest issue volume 21, issue 1. Selfcompacting concrete is a brittle material with a low strain capacity. 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. Sustainability and mechanical performance of fiber reinforced self compacting concrete frscc a. The experimental program consisted of twelve simply supported beams tested up to failure under fourpoint load. However, for steel fiber reinforced self compacting concrete sfrscc literature is sparse.
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