The effects of aggregate type, size, and content on the behavior of normal and highstrength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed. A survey of high performance concrete developments in. Load transfer from high strength concrete columns though lower strength concrete slabs, phd. Experimental study on shear capacity of high strength. In many countries, concrete strengths higher than 40 mpa are widely produced on commercial. Highstrength concrete with increased fracturetoughness. Highstrength concrete is typically used in the erection of highrise structures. Lifecycle assessment of highstrength concrete mixtures. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm h in. Effect of thermal cycles on compressive strength of high strength concrete m 90 compared to normal strength concrete m 30 b.
It is demonstrated that, in many cases, addition of steel fibres into high strength concrete improves the fire resistance and offers an economical solution for firesafe construction. Highvalue concrete highearlystrength concrete highearlystrength cement high cement content 400 to 600 kgm3 low watercementing materials ratio 0. About indian concrete journal icj the icj is one of the oldest and most respected journals on civil engineering in india. An overview of the research program, aimed at developing fire resistance design guidelines for high strength concrete hsc columns, is outlined. For better workability, durability, high tensile strength, environment friendly material, modern world accepting high performance concrete quickly. Investigation of thermal behaviour of a hybrid precasted concrete floor using embedded sensors. This equation shows a good correlation with own test data of 16 reinforced high strength concrete beams with and without steel fibres and numerous published experimental data for beams with concrete compressive strength up to 140 mpa. The compressive strength of highperformance concrete and. The mission of the committee was to study and report information on highstrength concrete. The time period in which a specified strength should be achieved may range from a few 300 design and control of concrete mixtures eb001 table 171. This is because the high strength concrete is designed with lower water cement ratio. Cip 33 high strength concrete what is high strength concrete it is a type of high performance concrete generally with a specified compressive strength of 8,000 psi 55 mpa or greater. Intended for contractors, producers, inspection agencies, as well as engineers and researchers. Getting started with highstrength concrete, ron burg, the concrete producer, november.
A substantial reduction of quantity of mixing water is the. Portland cement association with steel or other highstrength material is known as reinforced concrete. High strength concrete offers many advantages in the construction of high rise buildings and bridges. A major advantage of highstrength concrete hsc is the reduction in size of members in a reinforced concrete building. The present study deals with an investigation of the possibilities of increasing the fracture toughness of high strength concrete by adding fibres. For example, as shown by aitcin and mindess 2011, a concrete column made with 75 mpa concrete would use half as much cement, and only a third as much aggregate, as the same. Aci structural journal american concrete institute. The results indicate that foamed concrete with a density of 800 1, 500 kg m 3 and compressive strength of 10 50 mpa can be made by using silica. Increase in construction activities have led to an increase in demand for the various raw materials in concrete, especially river sand which is the conventionally used fine aggregate. The cement and concrete industrys interest in highstrength concrete prompted the american concrete institute to form aci committee 363 in 1979. Marzouk and hussein 9 tested 17 square specimens to investigate the punching shear behaviour of highstrength concrete slabs. Lightweight foamed concretes with a wide range of concrete densities 800 1, 500 kg m 3 were studied mainly for compressive strength, splitting tensile strength, and drying shrinkage. The international journal of concrete structures and materials ijcsm is a fully open access journal published under the brand springeropen, and provides a.
A comparison is made of the fire resistance perform. Performance of high strength concretefilled steel columns. Lifecycle assessment of highstrength concrete mixtures with. Citescore values are based on citation counts in a given year e. It appears that, in its hydraulic state of binding, a rheological criterion limits the structural usefulness of portland cement concrete to temperatures of 600c. The structural behavior with regard to the deformation and strength characteristic of highstrength concrete slabs of various thicknesses and different reinforcement ratios 0. Concrete has been since a long time a major material for providing a stable and reliable infrastructure. Pdf design of high strength concrete using superplastisizer. The various factors that influence the structural behaviour of high strength concretefilled hss columns under fire conditions are discussed. Creating a balanced mix design for high strength concrete, bryce simons, the concrete producer, october 1995, 4. Highstrength concrete is illustrated with real examples through documented case histories, and provides an understanding of the practical means and methods for designing, producing, and using highstrength concrete. Highstrength concrete pennsylvania state university. A survey of high performance concrete developments in civil. Properties of different grades of concrete using mix design.
Information published in aci structural journal includes. The high strength concrete has a lower value of permeability compared to normal strength concrete. Concrete mix design and experimentation on ultrahigh strength concrete have been carried out. An overview of the research program, aimed at developing fire resistance design guidelines for highstrength concrete hsc columns, is outlined. Hence, it is intended for use by engineers familiar with the design of concrete structures using particularly cp65 but who have little or no experience of high strength concrete hsc. Dynamic compressive strength, flexural strength, and tensile splitting strength of copper slag concrete mixes adapted from wu et al. Experimental investigation on high performance concrete. Highperformance concrete an overview sciencedirect topics. It has served civil engineering community, cementitious building material manufacturers, construction companies and infrastructure policy makers since 1927. High performance concrete is also a high strength concrete but it has a few more attributes specially designed for high range of properties. Pdf high strength concrete ijesrt journal academia. Densification and strengthening of the transition zone, many desirable properties can be improved. In addition to the variation in the concrete strength, two different slab. Highstrength concrete is typically recognized as concrete with a 28day cylinder compressive strength greater than 6000 psi or 42 mpa.
Guide to quality control and testing of high strength concrete, aci 363. In this paper we propose a model to evaluate the compressive. Fhwahrt60 june 20 research, development, and technology turnerfairbank highway research center 6300 georgetown pike mclean, va 221012296 dd 1 67 11. Using highstrength concrete or highperformance concrete with a low wb ratio in structural applications is more sustainable than normal strength concrete. Ecological high performance concrete sciencedirect. Mix design of highperformance concrete article pdf available in materials research 144.
A new equation for predicting the shear strength of reinforced high strength concrete beams is developed. Performance of highstrength concrete walls exposed to. Although all high rise and even many mediumrise buildings have high strength concrete walls, the spalling of high strength concrete walls in fire has generally been ignored by the designers and the fire resistance of walls has been calculated using the rules specified for normal strength concrete. The type of concrete generally with compressive strength of 6000psi 40mpa or greater is called as hsc. Recent case studies in construction materials articles. We need high strength concrete in our modern infrastructures in order to put the concrete into service at much earlier stage, to build up high rise building by reducing column sizes and increasing available space or in case of long span bridges. Ultrahighperformance concrete uhpc is defined as concrete that has a minimum specified compressive strength of 150 mpa with specified durability tensile ductility and toughness requirements. The properties of the end product depend not only on the various constituent. This study presents the shear capacity of ecofriendly high strength concrete hsc beams reinforced by 0. Experimental research on properties of highstrength. The first usable version of selfcompacting concrete was completed in 1988 and was named high performance concrete, and later proposed as selfcompacting high performance concrete. Dhir, use of recycled concrete aggregate in high strength concrete, materials and structures 33 9 2000 574a580. Today compressive strengths exceeding 20,000 psi 140 mpa have been used in castinplace buildings. International journal of innovative research in science.
Experimental investigation on high performance concrete using. Performance of highstrength concrete walls exposed to fire. The application of high strength concrete in practice is strongly limited by its more brittle behaviour than normal strength concrete. The second method is mainly used for insitu concrete, suitable for insulation roof screeds or pipe lagging. Properties of different grades of concrete using mix. Jan 01, 2012 lightweight foamed concretes with a wide range of concrete densities 800 1, 500 kg m 3 were studied mainly for compressive strength, splitting tensile strength, and drying shrinkage. International perspectives on industrial concrete flooring and the way forward in india prafulla p. High strength concrete is typically recognized as concrete with a 28day cylinder compressive strength greater than 6000 psi or 42 mpa. Workers placing and vibrating concrete on a bridge deck including epoxycoated reinforcing steel. It has been used in components such as columns especially on lower floors where the loads. Pdf high performance concrete ijirst international journal for. Pdf strength and durability of high performance concrete.
Aci 363r84, stateoftheart report on highstrength concrete, was the first document produced by this. The results show that partial cement replacement up to 20% produce, higher compressive strengths than control concretes, nevertheless the strength gain is less than 15%. Highearlystrength concrete highearlystrength concrete, also called fasttrack concrete, achieves its specified strength at an earlier age than normal concrete. The term ultra high performance concrete uhpc refers to a relatively new class of advanced cementitious composite materials whose mechanical and durability properties far surpass those of conventional concrete. The application of highstrength concrete in practice is strongly limited by its more brittle behaviour than normal strength concrete. Journal of engineering sciences, assiut university, vol. High early strength concrete high early strength concrete, also called fasttrack concrete, achieves its specified strength at an earlier age than normal concrete. Concrete with compressive strengths of 2040nmm2 have been traditionally used in construction projects. Guidelines for fire resistance design of highstrength.
This study presents the shear capacity of ecofriendly highstrength concrete hsc beams reinforced by 0. Compressive strength of concrete at high temperatures. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and. Whiting, durability of pavement concretes made with recycled concrete aggregates, journal of the transportation research board 2290 1 2012 44a51.
This study aimed to investigate the shear capacity performance for eight deep beams with htrb600 reinforced high strength concrete under concentrated load to enable a better understanding of the effects of shear spandepth ratio, longitudinal reinforcement ratio, vertical stirrup ratio and in order to improve design procedures. The optimum silica fume replacement percentage for obtaining maximum 28 days strength of concrete ranged from 10 to 20 % 45. Highstrength concrete is becoming very popular around the world due to its many advantages over normalstrength concrete. High strength concrete mix design proportioning of high. Highstrength concrete is required in engineering projects that have concrete components that must resist high compressive loads. Portland cement association with steel or other high strength material is known as reinforced concrete. Use of high strength concrete for repair, shear performance of beams, development of geopolymer concrete and temperature resistant concrete along with interesting case studies guest edited by prof. Design of concrete for better performance at high temperatures should aim at minimizing contributions to strength loss, while exploiting the processes responsible for gain in strength. This paper presents a comprehensive coverage of high performance concrete developments in civil engineering field.
This design guide serves to extend the use of concrete beyond grade 60 in the design of concrete structures using cp65. The present study deals with an investigation of the possibilities of increasing the fracture toughness of highstrength concrete by adding fibres. Ultra high performance concrete uhpc is a cementitious, concrete material that has a minimum specified compressive strength of 17,000 pounds per square inch 120 mpa with specified durability, tensile ductility and toughness requirements. Two concrete mixtures were developed with a primary goal of reaching high early strength while maintaining constructability. Research article flexural strength evaluation of reinforced concrete members with ultra high performance concrete baekilbae, 1 hyunkichoi, 2 andchangsikchoi 3 research institute of industrial science, hanyang university, haengdangdong, seongdonggu, seoul, republic of korea. By eliminating the coarse aggregate, improving the packing density of powders with specific grainsize distributions and using water curing at 90 c, it is possible to increase uhsc compressive strength to over 200 mpa when using mineral powders, 270 mpa with glass. Ultra high strength concrete uhsc is the latest spectacular development in the domain of portland cementbased materials. Experimental research on properties of highstrength foamed. A stateoftheart report for the bridge community publication no. Effects of materials, curing and test procedures on shortterm compressive strength. Results of the characteristics of different grades of concrete using mix design method are discussed in terms of density, compressive strength, flexural strength and workability. More generally, concrete with a uniaxial compressive strength greater than that typically obtained in a given geographical region is considered highstrength, although the preceding values are widely recognized. High performance concrete hpc has received increased attention in the development of infrastructure viz. The indian concrete journal is the oldest journal for concrete in.
The experimental results suggest that the highstrength concrete flexural members no axial loads, when compared with similar normal strength. Concrete is the most widely used construction material today. The compressive strength of silica fume concretes was investigated at low watercementitious materials ratios with a naphthalene sulphonate superplasticizer. More generally, concrete with a uniaxial compressive strength greater than that typically obtained in a given geographical region is considered high strength, although the preceding values are widely recognized. Pdf revisiting high strength concrete using common admixtures. Structural design for highstrength concreteimportant.
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