Ultrahigh performance concrete research papers academia. Although production costs of uhsc are generally high, some economical advantages also exist in uhsc applications. The interaction between these materials is the reason of the various workability cases, and also the different ratios and portions added causes this variability. Hence, high performance concrete is a better replacement over traditional portland cement concrete. Every ingredient of concrete consists different properties so, it is not an easy task to get economical and good concrete mix.
Concrete is the most widely used material in building construction. The advantages of uhpc are numerous and typically include reduced global costs such as formwork, labor, maintenance and speed of construction. The report also identifies specifications and practices reported as having improved concrete performance and. Introduction high performance concrete hpc should have at least one property like high strength, high durability, acid resistance, selfcompaction, low permeability to water, chemicals or other aggressive media, as compared to normal concrete, to qualify as hpc. Pdf hardened properties of highperformance printing. Development of high performance concrete and evaluation of. It is a fiber reinforced, cementitious material that offers exceptionally high mechanical and durability performance, including compressive strengths exceeding 22,000 psi and. High performance vs high strength concrete concretebasics. Researchers and engineers are constantly working on improving concrete properties. High performance concrete is defined as concrete with much higher early strength and greatly enhanced durability against freezing and thawing in comparison with conventional concrete.
Reduced maintenance cost though the initial cost of hpc is high when compared to conventional concrete, since less maintenance is required it results to be more economical. Trbs national cooperative highway research program nchrp synthesis 441. Developing performance specification for high performance. This special issue focuses on the various types of high performance concrete and their applications, which will be published in materials, an interdisciplinary journal dedicated to covering leading research and. Materials and methods for high performance concrete. However, if moist curing is resumed, strength development will be reactivated, but the original potential strength may not be achieved.
The densification of the interfacial transition zone allows for. Pdf high performance concrete by pierreclaude aitcin. A pdf file on high performance concrete giving full details about high performance concrete, their use,advantages,disadvantages,strength. Ultra high performance concrete pathway to commercialization. High strength concrete 1 high strength concrete hsc 2 introduction. The volume of co2 emitted by hpc is lower than portland cement concrete. For instance, cement with low c3a is the most desired type of cement to produce highperformance concrete because the c3a creates incompatibility of cement with a. Chemical and physical properties of cement can help in selecting desired cement to produce high performance concrete. Dec 12, 2017 a pdf file on high performance concrete giving full details about high performance concrete, their use,advantages,disadvantages,strength,applications,tensile s slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Ultra high performance concrete is a new type of concrete that is being developed by agencies concerned with infrastructure protection. It is possible to reduce or eliminate passive reinforcement using steel fibers. Mechanical properties of high performance printing concrete reinforced with steel fibres with different lengths 3 and 6 mm at different fibre volume contents 0.
Effect of glass powder and ggbs on strength of fly ash. Advantages disadvantages pennsylvania state university. Not all properties can be achieved at the same time. Explore high performance concrete with free download of seminar report and ppt in pdf and doc format. Construction and building materials, 20 geopolymer concrete has high tensile strength.
These mix design options require the use of supplementary cementing materials scms at varying minimum replacement percentages with maximum water to cementitious ratios. Following investigation of the constructability and performance of critical connections and panels through largescale testing, a field. This report details the laboratory developmental work on producing high performance concrete for highway applications. Advantages and disadvantages of geopolymer concrete the main advantages and disadvantages of geopolymer concrete are listed here. The increasingly widespread use of high strength concretes permits. High performance concrete seminar ppt with pdf report.
And, due to ultrahigh mechanical performance of uhsc, the thickness of concrete elements can be reduced, which results in materials and cost savings. The water reducing capacity of these admixtures is between 1840% of the control or reference concrete. High performance concrete are also known as green concrete. Explore green concrete with free download of seminar report and ppt in pdf and doc format. Txdot currently defines high performance concrete hpc as mix design options 14. High performance concrete and its applications in the.
High performance concrete is necessary for the construction of high rise building and long span bridges. High strength concrete hsc has a compressive strength greater than 55mpa having water cement ratiowc ranging from of 0. High strength concrete and high performance concrete. High performance concrete specifications and practices for bridges documents the types of specifications and practices used by state transportation agencies to produce high performance concrete for bridges. A pdf file on high performance concrete giving full details about high performance concrete, their use, advantages,disadvantages,strength,applications,tensile s slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. To call concrete high performance implies that it is specialized. The american concrete institute aci defines high performance concrete as concrete meeting special combinations of performance and uniformity requirements that cannot always be achieved routinely when using conventional constituents and normal mixing, placing and curing practices. Use of ultrahigh performance concrete in bridge design. Modulus of elasticity by astm c469 at the concrete age when the. For instance, cement with low c3a is the most desired type of cement to produce high performance concrete because the c3a creates incompatibility of cement with a superplasticizer.
The highperformance concrete hpc is a mixture of many materials usually 510. Apr 21, 2015 concrete is the most widely used construction material in india with annual consumption exceeding 100 million cubic meters. High performance concrete uhpc have been undertaken in the state of iowa. Highstrength concrete hsc has a compressive strength greater than 55mpa having water cement ratiowc ranging from of 0. Recently, a new ultrahighperformance fiberreinforced concrete uhpc was introduced into construction. Concrete is the most widely used construction material in india with annual consumption exceeding 100 million cubic meters. So, there is a need to design high performance concrete hpc which is far superior than conventional concrete. Fatigue is the process of mechanical degradation of a material, which leads to its collapse. Ultra high strength concrete strength of materials concrete. Evaluation of ultrahighperformance fiberreinforced concrete.
Recently, a new ultra high performance fiberreinforced concrete uhpc was introduced into construction. Selfconsolidating 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. Workability characteristics of the fresh concrete are analyzed and hardened concrete properties tested in this research are compressive strength, chloride ion permeability, and creep and drying shrinkage properties. View ultra high performance concrete research papers on academia. The advantage of highstrength concrete hsc in highrise buildings.
Highperformance concrete hpc exceeds the properties and constructability of. The compressive strength of highperformance concrete and. And, due to ultra high mechanical performance of uhsc, the thickness of concrete elements can be reduced, which results in materials and cost savings. The history of high strength concrete is about 35 years old, in late 1960s the invention of water reducing admixtures lead to the high strength precast products and structural elements in beam were cast in situ using high strength concrete. The book will be valuable for all concrete technologists and construction engineers wishing to take. So, high performance concrete is superior to ordinary concrete in all properties. Third, allowable stress design discourages the use of highstrength concrete. High performance concrete is necessary for the construction of high.
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%. Selfcompacting concrete has been used in bridges and even on precast sections. View ultrahigh performance concrete research papers on academia. Assessment document and provide experimental background for this issue. Ease of placement and consolidation without affecting strength. Ultrahigh performance concrete uhpc is defined as a cementitious based composite material with compressive strengths above 150 mpa, preand postcracking tensile strengths above 5 mpa, and enhanced durability. High strength concrete hsc provides a high level of structural performance, especially in strength and durability, compared to traditional, normalstrength concrete nsc. This book provides the state of the art on recent progress in the high performance concrete applications written by researchers and experts in the field. National precast concrete association 3 introduction a s a material on the leading edge of concrete innovation, ultra high performance concrete uhpc provides a new technology to expand a precasters business with new products and solutions. To achieve desired properties, uhpc is typically produced with low watercementitious materials wcm ratio i. Ultra high performance concrete uhpc 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. Pdf the advantage of highstrength concrete hsc in highrise. 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.
In some instancesssuch as when concrete can obtain high early strength. Based on the success of the initial applications in 2001 through 2003, nysdot specified the following seven performance criteria for highstrength hpc for precast, prestressed concrete beams beginning in 2004. Green concrete seminar report, ppt, pdf for civil engineering. In this project, the scc was mixed onsite and pumped through a piping system to the specified point, located 200 meters away. Highperformance concrete specifications ideally should be performance oriented. Mix design of highperformance concrete article pdf available in materials research 144. Also explore the seminar topics paper on high performance concrete with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Jun 24, 2019 results from previous works indicated that geopolymer concrete exhibited better mechanical strength and durability properties than ordinary. Concrete mix design is process of preparation of concrete with suitable proportion of ingredients to meet the required strength and durability of concrete structure. In the first initiative, a prefabricated uhpc waffle deck panel was developed. In this paper we propose a model to evaluate the compressive. Uhpc is characterized by being a steel fibrereinforced cement composite material with compressive strengths in excess of 150 mpa, up to and possibly exceeding 250 mpa.
Selfcompacting concrete applications and advantages. Pdf a survey of high performance concrete developments in. As the technology of concrete improves, various kinds of high performance concrete have recently been developed and used. High performance concrete hpc can go a long way in addressing concerns about providing more durable and longer lasting concrete as well as meeting strength and other performancerelated criteria. Highstrength concrete must meet highperformance standards consistently in order for it to be effective. This paper summarizes three such ongoing initiatives. Pdf high performance concrete hpc has received increased attention in the development of.
High performance concrete technology and applications. Although it can be done in a laboratory, it is difficult to resaturate concrete in the field. Concrete is defined as highstrength concrete solely on the basis of. High performance concrete seminar report, ppt, pdf for. Also explore the seminar topics paper on green concrete with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Typically, additional reinforcement for shear is not required.
Highperformance concrete an overview sciencedirect topics. It covers all aspects of hpc from materials, properties and technology, to construction and testing. Ever since the terminology highperformance concrete hpc was introduced into the industry, there have been. The strategic plan for bridge engineering issued by aashto in 2005 identified extending the service life and optimizing structural systems of bridges in the united states as two grand challenges in bridge engineering, with the objective of producing safer bridges that have a minimum service life of 75 years and reduced maintenance cost. Ultra high strength concrete strength of materials. Urban development that took place through the world in the last few decades yielded significant developments for concrete technology. High performance concrete have several advantages over traditional portland cement concrete. Ultrahighperformance concrete is a new type of concrete that is being developed by agencies concerned with infrastructure protection. Table 172 lists properties that can be selected for highperformance concrete. Concrete is widely used because of its versatility, affordability, and availability of raw materials, strength, and durability. Highstrength concrete resists loads that cannot be resisted by normalstrength concrete. The term highperformance concrete hpc is relatively new, and it refers to many properties such as strength, durability, sound and. The term includes a broad range of materials such as defectfree, dense particle, engineered composite, multiscale particle, and fiberreinforced cementitious.
Uhpc has several advantages over conventional concrete but the use of it is. Mechanical properties of highperformance printing concrete reinforced with steel fibres with different lengths 3 and 6 mm at different fibre volume contents 0. Early high strength concrete advantages and challenges shivram bagade. The term high performance concrete hpc is relatively new, and it refers to many properties such as strength, durability, sound and. The compressive strength of silica fume concretes was investigated at low watercementitious materials ratios with a naphthalene sulphonate superplasticizer. High performance concrete exceeds the properties and constructability of normal concrete. Consequently, there is a reduction of the thickness of the interfacial transition zone in highstrength concrete. The american concrete institute aci defines highperformance concrete as concrete meeting special combinations of performance and uniformity requirements that cannot always be achieved routinely when using conventional constituents and normal mixing, placing and curing practices. High performance concrete is a concrete in which certain characteristics are developed for a particular application and environment, so that it will give excellent performance in the structure in which it will be placed. Chapter five case examples of high performance concrete. Repeated load applications with a maximum value lower than the one that provokes the static failure of the material, causes internal damage in the material that, progressively, reduces its mechanical capacity until it finally collapses. High performance concrete hpc is that which is designed to give optimised performance characteristics for the given set of materials, usage and exposure conditions, consistent with requirement of cost, service life and durability.
Ppt high strength concrete powerpoint presentation free. High performance concrete hpc is a particular series of concretes designed to give many benefits in the construction of concrete structures. The increasingly widespread use of highstrength concretes permits. Uhpc has many advantages over conventional concrete but is still in limited practice due to limited design codes and high cost. Jun 17, 2019 selfcompacting concrete produces resistance to segregation by using mineral fillers or fines and using special admixtures. Ppt high strength concrete powerpoint presentation.
Chemical and physical properties of cement can help in selecting desired cement to produce highperformance concrete. This book provides the state of the art on recent progress in the highperformance concrete applications written by researchers and experts in the field. A pdf file on high performance concrete giving full details about high performance concrete, their use,advantages,disadvantages,strength,applications,tensile s slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The required properties for concrete to be classified as high performance therefore depend on the properties of normal concrete. High performance concrete and its applications in the field. Within the last few decades, research has been conducted on what is known as ultra high performance concrete uhpc. Due to low wc ratio it requires superplasticizer to achieve required workability. High performance concrete can be used to make sustainable admixture. High performance concrete hpc should have at least one property like high strength, high durability, acid resistance, selfcompaction, low permeability to water, chemicals or other aggressive media, as. Although traditional shipbuilding uses steel for almost the whole structure, concrete has also been used in the past in a few vessels. These materials may cost more than materials of lower quality.
Unfortunately, many specifications are a combination of performance. Early high strength concrete advantages and challenges. But in the last years, the offshore industry has been discovering the great possibilities that concrete presents as compared to steel, and it is being used in more and more projects, such as floating lng terminals and in the development of the mob concept. Ultrahigh performance concrete uhpc bridge applications. Advantages and disadvantages of geopolymer concrete viiadvantages fristly, this is one of the primary advantages of geopolymers over traditional cements. High performance concrete is defined as a concrete which meets special performance and uniformity requirements that cannot always be achieved routinely by using only conventional materials and normal mixing, placing and curing practices, as per aci 363. Highperformance concrete may be defined as concrete with strength and durability significantly beyond those obtained by normal means. The fibers in uhpc provide tensile capacity across cracks, resulting in high shear capacity in bending members. Introduction it is important to note the highstrength and highperformance concrete are not synonymous. One of the most remarkable projects built using selfcompacting concrete is the akashikaikyo suspension bridge.
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