Ultrahigh 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. The methodology to develop such mix has been explained. Ultrahigh performance concrete fhwa us department of. Recently, a new ultrahighperformance fiberreinforced concrete uhpc was introduced. Ultra high strength fiber reinforced concrete using aramid. Highstrength concrete hsc has a compressive strength greater than 55mpa having water cement ratiowc ranging from of 0. Ultra high strength concrete using economical materials. Ultrahigh performance concrete with compressive strength exceeding 150 mpa 22 ksi. This high performance concrete can be utilized in structural rehabilitation and accelerated bridge construction in addition to several other applications.
Ultrahigh performance concrete with compressive strength. High strength could result in more economical structures through increasing span lengths, reducing the number of beam lines, and decreasing transportation and erection costs lane and podolny, 1993. Commercial brands are available and many research mixtures have been developed. Cold formability flanging in a brake press to relatively small inside bend radii is possible, but due to the very high strength of the material the equipment must be capable of handling sufficiently high loads and the. Highperformance means that the concrete has one or more of the following properties. Mechanical properties of ultrahigh performance concrete. Publishers pdf, also known as version of record includes final page, issue and. Mix design and properties assessment of ultrahigh performance. Mix 1 was high strength concrete while mix 2 was a high strength concrete and mix 3 was ultrahigh compressive strength concrete 7, 8 and 9. Ultra high strength concrete uhsc prepared by shihab a.
High strength and high performance concrete materials and. Key words uhpc, ultrahigh performance concrete, fiberreinforced concrete, bridges, structural. Properties of cement mortar and ultrahigh strength. For example, researchers are using silica fume and high. Highperformance concrete is a term used to describe concrete with special properties not attributed to normal concrete. Ultra high strength fiber reinforced concretes were produced using aramid fibers having different shapes and sizes to investigate their fresh and mechanical properties after hardening, including compressive strength, as well as postcracking strength from notched beams. As such, we first explored the properties of uhpc with a designed 28day compressive strength of 120 mpa or higher in the fresh mix phase, and. Pdf ultrahigh performance concrete material properties. Preventing brittle failure under compression and tension, ultrahigh strength concrete usually use the steel fibers as reinforcements. The most common use of highstrength concrete is for construction of highrise buildings. Pdf over the last twenty years, remarkable advances have taken place in the research and application of ultrahigh performance concrete. Pdf mechanical properties of ultra high performance concrete. Pdf ultrahigh strength concrete uhsc mixture proportions developed in previous work that used local materials to improve the sustainability of uhsc.
Material property characterization of ultrahigh performance concrete 6. Nanosilica, ultra high strength concrete, silica fume, binder content introduction concrete is a highly heterogeneous material produced by mixture of finely powdered cement, aggregates of various sizes and water with inherent physical, chemical and mechanical properties. Ultrahigh performance fibre reinforced concrete uhpfrc is a combination of high strength concrete and fibres. 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.
The term ultrahigh performance concrete uhpc refers to a relatively new class. Ultra high strength concrete strength of materials. The high compressive and tensile properties of uhpc also facilitate a high bond strength allowing shorter length of rebar embedment in applications such as. Highperformance concrete has been primarily used in tunnels. Civil engineering animated videos, civil engineering videos social m.
Pdf ultrahigh strength concrete mixtures using local. This design guide serves to extend the use of concrete beyond grade 60 in the design of concrete structures using cp65. Previous research suggested rectangular stress block parameters for high strength and ultra high strength concrete. Mechanical and technological properties of ultra high strength optim steels 3. Due to low wc ratio it requires superplasticizer to achieve required workability. Introduction material properties mixing placing compacting. Mechanical properties of ultrahigh performance fiber. High performance concrete seminar ppt with pdf report. Ultra high strength concrete uhsc is the latest spectacular development in the domain of portland cementbased materials. High strength concrete and highperformance concrete are not synonymous because strength and performance of concrete are different properties of concrete. Pdf ultrahigh performance concreteproperties, applications and. 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. Ultrahigh performance concrete uhpc 150 mpa 22 ksi 1.
Mechanical and technological properties of ultra high. Uhsc was designed and mixed to evaluate its static and dynamic mechanical properties in this study. Ultrahigh performance concrete portland cement association. Pdf mechanical properties of ultra high performance. Pumping curing heat treatment application mix design introduction. The material attributes are understood by studying the stress strain behaviour of uhpc. Concrete is one of the necessary elements for structural work in the modern construction. With incorporation of steel fiber, the ductility and energy absorption of uhpc is typical 300.
In the decade, buildings around the world have become higher and so the structural strength demand for concrete is increased, they require high strength. 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. Ultrahigh strength concrete which have 100 mpa compressive strength or higher can be developed applying rpcreactive powder concrete. The term includes a broad range of materials such as defectfree, dense particle, engineered composite, multiscale particle, and fiberreinforced cementitious materials with enhanced properties and characteristics. Effect of steel fibers on behavior of ultra high performance concrete hamdy k. Development of an ultrahigh strength ductile concrete designated rpc reactive powder concrete, was made possible by the application of a certain number of basic principles relating to the.
High performance concrete seminar and ppt with pdf report. Ultrahigh performance concrete has a discontinuous pore structure that reduces liquid ingress, significantly enhancing durability compared to conventional and highperformance concretes. Pdf ultrahigh strength concrete mixtures using local materials. In this regard, high strength concrete hsc is defined as concrete with a specified characteristic cube strength in excess of 60 nmm2. Considering the high strength and durability requirements of uhpc, the. Pdf ultrahigh strength and performance concrete properties. Not only does high strength concrete allow for more applications, it also increases the strength per unit cost, per unit weight, and per unit volume as well.
Pdf mechanical properties of ultrahigh strength concrete with. This video animation, animated video explains the concept of high strength concrete. Ultra high performance concrete uhpc is a new class of concrete that has been developed in recent decades for its exceptional properties of strength and durability. For the effective use of steel fiber reinforced ultrahigh strength concrete, estimation of tensile strength is very important. It is a concrete mixture, which holds high durability and high strength when compared to conventional concrete. Bickley and fung 2001 demonstrated that 40 mpa 6,000 psi highperformance concrete for bridges could be ecofig. The relatively high initial cost of uhpc has restricted its wider. Highperformance concrete hpc exceeds the properties. Practice oriented papers and articles on ultra high strength concrete flexural behavior of gfrpufc composite beams under moderately high temperature. Advantages disadvantages pennsylvania state university. Uhpc is being considered for use in a wide variety of highway infrastructure applications.
A research program is conducted to evaluate the mechanical properties of ultra high performance concrete, target compressive strength at the age of 28 days being more than 150 mpa. Physical properties of the used sand are given in table 1 and its grading is shown in table 2 and fig. Evaluation of ultrahighperformance fiberreinforced concrete. Pdf on jun 1, 2011, ofelia corbu and others published ultrahigh strength and performance concrete properties find, read and cite all the. The design recommendations herein are restricted to an upper limit to the characteristic cube strength of 105 nmm2. Pdf correlation between tensile strength and compressive. Highstrength concrete resists loads that cannot be resisted by normalstrength concrete. Fhwa uhpc is a cementitious composite material composed of an optimized gradation of granular constituents, a watertocementitious materials ratio less than 0. Highvalue concrete highstrength concrete materials 9.
During 1970s, any concrete mixtures which showed 40 mpa or more compressive strength at 28 days were. This page contains high performance concrete seminar and ppt with pdf report. Highrange water reducers are essential to uhpc for providing the plasticizing effects, allowing the concrete to flow to self. Pdf for centuries, concrete producers and researchers have been striving to improve the material properties of concrete.
The material properties, mix design and curing regime are determined. Today compressive strengths exceeding 20,000 psi 140 mpa have been used in castinplace buildings. Influence of key design parameters of ultrahigh performance fibre. The report concludes with recommendations for the future direction for uhpc applications in the united states. The term ultrahigh performance concrete uhpc refers to a relatively new. However, most of code provisions use the rectangular stress block parameters because they mainly focused on the use for normal strength. Highstrength concrete is defined based on its compressive strength at a given age. Ultra high performance concrete uhpc could show compressive strength from 150 to 810 mpa, approximately 316 times as that of conventional concrete. The possibility of achieving high strength, durability, and improved ductility with the use of ultra high strength concrete encourages researchers and engineers to use this modern material in many practical applications like nuclear waste containment structures, high rise structures, long span bridges, and walkways. Ultrahigh strength concrete mixtures using local materials. A research program is conducted to evaluate the mechanical properties of ultra high performance concrete, target compressive strength at the age of 28 days.