Simplified Mix Design Procedures for Steel Fibre Reinforced Self Compacting Concrete

Abstract

Abstract. The present study focus on the systematic design methodology for producing a self-compacting concrete (SFRSCC) consisting of steel fibre reinforcements. It is intended to achieve a self-consolidating concrete which can yield dual benefit of self-consolidating properties as well as toughness of the composite. Experimental modelling consisted of designing the mortar phase using manufactured sand (M-sand) as fine aggregate using systematic mix design methodology based on particle packing concept. Optimisation of aggregates was arrived based on packing density concept by conducting slump cone studies. Powder combinations consisting of cement and ground granulated blast furnace slag (GGBFS) were selected by conducting paste consistency test. Finally, superplasticizer dosage was fixed based on Marsh cone studies and volume fraction of steel fibres from slump flow studies. The workability of standard and high strength concrete is affected by the inclusion of steel fibre dosage and the fresh properties revealed the importance of maintaining a high paste volume for better flow ability. Based on the proposed mix design methodology with M-sand a high strength self-compacting concrete was achieved upto 70MPa. Experimental investigations were reported on the other assessment made from fresh and hardened properties of designed self-compacting steel fibre concrete mixes. Also, the outcome of test results revealed the possibility of using M-sand as an alternative for complete replacement of river sand.

Effect of Curing Conditions on the Compressive Strength of Self Compacting Concrete Incorporating Slag and Steel Fibres

“…Compressive Strength tests were conducted on two different mixtures, one with fibres and one without fibres. The mix design methodology, mix proportions, mixing sequene, fresh properties of SCC mixtures used for this investigation is explained in the work carried out by the author [3].The concrete mix composition is given in Table I. A.…”

“…The Shape and texture of fine aggregates will have more influence on the resulting SCC , than coarse aggregate.An effective alternative to river sand is Manufactured sand (M-sand), obtained by crushing rocks to the required grain size distribution. The quantity of fines content in M-sand are more and consists of very less silt and clay, which makes it more user friendly [3].The duration and type of curing provided will affect the hardened properties of SCC.Proper curing will enhance Strength, durability, Abrasion resistance, resistance to freezing and thawing and Volume stability [15].The augmented usage of High performance concrete has led to the investigation of different curing methods. The curing method selected will depends on the size, shape, age of concrete, production materials and curing materials [8].…”

Effect of Additional Fiberglass Fiber on Concrete Performance

“…Based on the proposed mixed design methodology with M-sand, high strength selfcompacting concrete is achieved up to 70MPa. Experimental investigations are reported on other assessments made of the fresh and hardened properties of self-compacting steel fiber concrete mixtures [11]. The fabrication and optimization of the occupancy layer is very important for the performance of protective work.…”

Experimental Investigation of the Effect of Micro-Silica and Zeolite on Repair Mortar of Concrete Pavements

“…At the outset, all the properties were enhanced with age and with the addition of steel fibres. Apart from environmental benefits, M-sand can perform the role of an effective filler material to concrete compared to river sand [21].…”