Mechanical properties and durability of high performance. Key words uhpc, ultra high performance concrete, fiberreinforced, durability, material characterization. Durability of concrete transportation research board. Strength and durability of high performance concrete. Concrete surfaces with poor durability have been a problem on some highways in. High performance concrete hpc is that which is designed to give optimized performance characteristics for the given set of materials, usage and exposure conditions, consistent with requirement. The ultra high performance concrete uhpc tested in this research is a steel. Pdf mechanical and durability properties of highstrength concrete.
Influence of colliodal nano sio2 on durability properties. For this purpose, the ordinary portland cement was substituted with 0, 10, 15, and 20 % pofa in a selfconsolidating high strength concrete. In this study, durability properties of high strength concrete utilizing high volume class f fly ash sourced from western australia have been investigated. Uhpc potential applications include tall structures, rehabilitation works, structural. High performance concrete hpc possessing high workability, high durability and high ultimate strength. Introduction high performance concrete is a concrete that having meets special qualities like performance and uniformity that cannot be achieved using conventional concrete making methods. The reference concrete mixescontaining only portland cementperformed better than the concrete containing pozzolan material of fly ash or silica fume. Combining uhpc and highstrength steel is expected to yield unique structures in the near future. Material a cement ordinary portland cement53 grade ambuja cement have used in investigation.
Request pdf strength and durability characteristics of highstrength concrete with recycled aggregateinfluence of processing utilization of recycled. This page contains high performance concrete seminar and ppt with pdf report. Key words uhpc, ultra high performance concrete, fiberreinforced concrete, bridges, structural. It appears, therefore, that other factors must be considered as affecting abrasion resistance, and compressive strength alone cannot be used as a criterion for durable concrete. A high density, alkaliresistant concrete will better resist the effects of moisture penetration. Canada center for mineral and energy technology canmet is the pioneer in the research on high volume of fly ash concrete. Mechanical behavior of highperformance concrete under thermal. Durability of concrete types of durability and factors. Concrete strength and concrete durability, are they. Nowadays, the demand for high strength concrete hsc has increased due to its high resistance to compressive loads and minimum thickness requirement for individual sections, reducing the weight of the structure. Pdf strength and durability of high performance concrete. Strength and durability evaluation of recycled aggregate concrete. High workability, high durability concrete in the middle east.
Several concrete mixes were prepared with 100 % recycled aggregates and the results were compared to that of a control mix. High performance concrete has several advantages like improved durability characteristics and much lesser micro cracking than normal strength concrete. Concrete durability depends upon the degree of exposure, the concrete grade or strength and the cement content. Ultra high performance concrete uhpc is a novel construction material exhibiting enhanced mechanical and durability properties, which can lead to economical construction through reducing the crosssections of structural members with associated materials savings and lower installation and labor costs tang 2004. High performance concrete seminar and ppt with pdf report. 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. Airentrained concrete with a low watercementitious ratio and an air content of 5 to 8 percent of properly distributed air voids will withstand a great number of cycles of freezing and thawing. High quality materials meet the performance criteria for workability, strength, durability, and other properties.
The lowabsorption limestone aggregate concrete mixes exhibited the best freezethaw durability performancein some cases, enduring more than 1,500 freezethaw cycles without failing. This paper focusses on the influence of aggregate gradation, cement content, micro silica and superplasticiser on durability of high performance concrete hpc. Effect of fly ash on the durability properties of high. High performance concrete reduces the co2 level and make environment green. Anything that increases the early strength of concrete is detrimental to durability. High concrete strength significantly in excess of minimum 45mpa at 28 days in order to achieve. Advanced cementitious material high strength, high stiffness. High performance concrete seminar ppt with pdf report. It is a concrete mixture, which holds high durability and high strength when compared to conventional concrete. Number ec171 september 20 transportation research board. Strength and durability characteristics of highstrength.
Though it is difficult to achieve in the field, such lowpermeability, high strength concrete can be made with the following methods and materials. In this paper, the partial replacement of volcanic pumice powder vpp was investigated for use as a supplementary cementitious material. Tips for selection of materials for high strength concrete pdf. Strength and durability evaluation of recycled aggregate. It is a type of high performance concrete generally with a specified compressive strength of 6,000 psi 40 mpa or greater. Aci committee 363 defines high strength concrete as the concrete which has specified compressive strengths for designs of 55 mpa or greater 2. The content of high strength concrete is generally which often leads to higher shrinkage and greater evolution. The compressive strength, drying shrinkage, sorptivity and rapid chloride. May 14, 2015 several concrete mixes were prepared with 100 % recycled aggregates and the results were compared to that of a control mix. High workability, high durability concrete in the middle east a case study. Production of high performance concrete the british standards are utilized as a basis for the contract documents and high performance concrete was used significantly in the project. Compressive strength 18 to 35 ksi modulus of elasticity 6200 to 8000 ksi creep coefficient 0. Durability of concrete durability of concrete may be defined as the ability of concrete to resist.
Concrete durability an overview sciencedirect topics. Concrete as a construction material are grouped as normal concrete or high strength concrete based on its compressive strength. The development of high strength concrete has been a great breakthrough in concrete technology. Guide specification for high performance concrete for bridges. At 969 feet, chicagos 311 south wacker drive uses concrete with compressive strengths up to 12,000 psi and is one of the tallest concrete buildings in the united states. A new class of concrete that exhibits greatly improved strength and durability properties has recently been developed. Getting started with highstrength concrete, ron burg, the concrete producer, november. The report concludes with recommendations for the future direction for uhpc applications in the united states.
During 1970s, any concrete mixtures which showed 40 mpa or more compressive strength at 28 days were. High replacement levels of fly ash are uncommon however, because of resistance to change by the cement industry and because of concerns about the earlyage strength and the quality of concretes produced with high cement replacement levels. What has changed, is the early strength, a function of the rate of cement hydration. Hardy ceng fiet, in transmission and distribution electrical engineering fourth edition, 2012.
The fly ash replacement level as 15 25% is recommended for high strength concrete aci committee 211 2008, while it can be used as more than 50% of total binder for normal strength concrete carette et al. The optimum silica fume replacement percentage for obtaining maximum 28 days strength of concrete ranged from 10 to 20 % 45. Fhwa report fhwahrt06103 material property characterization of ultra high performance concrete. To evaluate the behaviour of alccofine based high performance concrete, both compressive strength and durability aspects have been studied in this investigation. Concrete mixtures were designed to nominal 28 day compressive strengths of 6000, 8000, and 10,000 psi 41, 55, and 69 mpa using mix designs typical of commercial production of high strength concretes. The high strength concrete will have strength above 40mpa. High performance concrete may be defined as concrete with strength and durability significantly beyond those obtained by normal means. Different concretes require different degrees of durability depending on the exposure environment and properties desired. Pdf this investigation was carried out to evaluate the compressive strength and durability properties of high performance concrete containing. Guide to quality control and testing of high strength concrete, aci 363.
Salama2014in this paper behavior and strength of beams cast with ultra high strength concrete containing different types of fibers carried out on ultrahigh performance concrete uhpc is a special type of concrete with extraordinary potentials in terms of strength and durability performance. Different concretes require different degrees of durability depending on the exposure environment and. Holm expanded shale, clay, and slate institute 7580 rockfalls drive richmond, va 23225 theodore w. Cement replacement up to 10% with silica fume leads to increase in compressive strength, for m30 grade of concrete. High strength concrete hsc may be defined as concrete with a specified characteristic cube strength between 40 and 100 nmm2, although higher strengths have been achieved and used. High strength concrete hsc was prepared using two sets of vpp 10% and 20% incorporated with three sets of polypropylene fiber pf 0. Pdf durability evaluation of normal and high performance concrete. Stateoftheart report on highstrength, highdurability. The results showed that concrete with acceptable strength and durability could be produced if high packing density is achieved. To produce the higher strength concretes, additions of fly ash class c, water reducers, and high range water reducers were utilized.
Strength and durability of high performance concrete using. Introduction highperformance concrete is a concrete that having meets special qualities like performance and uniformity that cannot be achieved using conventional concrete making methods. Global demand and urbanization have contributed to the consumption of large quantities of concrete. Properties of ultra high strength selfcompacting fiberreinforced concrete. As the first step, an optimum aggregate gradation for 20 mm size aggregates, derived. Highperformance concrete an overview sciencedirect topics. The most common use of high strength concrete is for construction of high rise buildings. High strength concrete and high performance concrete are not synonymous because strength and performance of concrete are different properties of concrete. Nov 15, 2012 what has changed, is the early strength, a function of the rate of cement hydration.
High strength concrete is defined based on its compressive strength at a given age. Fantilli, bernardino chiaia, davide zampini, alexandre guerini, and giovanni volpatti. As per aci, hpc is defined as a concrete meeting special combination of performance and uniformity requirements that cannot always be achieved routinely using conventional constituents and normal mixing, placing, and curing practices. Durability characteristics, such as drying shrinkage. Sixtysix studies have related the hydration rate of cement to the cracking tendency of concrete. The required properties for concrete to be classified as high performance therefore depend on the properties of normal concrete achievable at a particular time and location. Stateoftheart report on high strength, high durability structural lowdensity concrete for applications in severe marine environments by thomas a. High performance concrete seminar report, ppt, pdf for. High performance concrete is a concrete that possess some special characteristics such as high durability, high workability and if necessary, stronger than conventional concrete. It is also clear that many issues not related to materials selection or proportioning can have major effects on durability of concrete. The latest developments in the field of high performance concrete hpc attempt to make an ecological material with enhanced rheological, strength and durability characteristics, by utilizing the components to its full potential1.
This class of concrete has been demonstrated to facilitate solutions that address specific problems in the u. 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. Durability and strength characteristics of highstrength. A high performance concrete hpc is required to have superior performance in various aspects such as workability, strength, durability, dimensional stability, segregation stability, and passing. High workability, high durability concrete in the middle east a case study author. Advanced cementitious material high strength, high. High early strength concrete high early strength concrete, also called fasttrack concrete, achieves its specified strength at an earlier age than normal concrete. High strength and high performance concrete materials and. Material property characterization of ultrahigh performance. Highperformance concrete hpc is a concrete mixture, which possesses high durability and high strength when compared to conventional concrete 1.
Permeability of normal strength and high strength concrete. The definition of high performance concrete utilized for the project includes high strength concrete, workability, and durability. The commercial utilization of high strength concrete with 60 to 120 mpa compressive strength is a recent phenomenon. Second edition reactions and reduction in paste contents increasing of dimensional stability are expected with better gradations of aggregates. It is a type of high performance concrete generally. Highperformance concrete hpc exceeds the properties.
It normally refers to the duration or life span of troublefree performance. Creating a balanced mix design for high strength concrete, bryce simons, the concrete producer, october 1995, 4. Durability is defined as the capability of concrete to resist weathering action, chemical attack and abrasion while maintaining its desired engineering properties. The document provides mandatory language that the specifier can cut and paste into project specifications. Ever since the term highperformance concrete was introduced into the industry, it had widely used in large.
Ductility index and durability in fiberreinforced concrete. Tips for selection of materials for high strength concrete. Concrete mixtures with fly ash as 30% and 40% of total binder were used to cast the test specimens. Jan, 2016 high performance concrete hpc possessing high workability, high durability and high ultimate strength. High workability, high durability concrete in the middle. Durability performance of bridge concretes, part ii. Strength should be specified only as a requirement needed to allow the structure withstanding against the loads applied and not as a durability performance indicator. Today compressive strengths exceeding 20,000 psi 140 mpa have been used in castinplace buildings. Box 4400 fredericton, nb canada e3b 5a3 final report. Results of hybridfiberreinforced concrete the experimental study indicate that addition of silica fume improves both mechanical and durability highstrength.
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