Materials and methods for high performance concrete. The prestressing of concrete has several advantages as compared to traditional reinforced concrete rc without pre stressing. The book will be valuable for all concrete technologists and construction engineers wishing to take. Static performance poles made of high performance concrete c5567 to c100115 were developed to enable greater loading capacities, higher tensile and compressive strengths, lower wall thickness and diameters. High strength concrete and high performance concrete happho. High performance concrete is defined 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, as per aci code. A mix design procedure for highperformance concrete mixes has been presented in this paper. Highperformance concrete almost always has a higher strength than normal concrete. A fully prestressed concrete member is usually subjected to compression during service life. High performance concrete is an engineered concrete obtained through a careful selection and proportioning of its constituents. The compressive strength of silica fume concretes was investigated at low watercementitious materials ratios with a naphthalene sulphonate superplasticizer.
Highperformance concrete may be defined as concrete with strength and durability. Third, allowable stress design discourages the use of high strength concrete. The term includes a broad range of materials such as defect free, dense particle, engineered composite, multiscale particle, and fiberreinforced cementitious. The size of structural members like beams and columns are reduced since smaller sections are enough to carry high loads. Concrete is the most widely used material in building construction. 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 performance related criteria. High performance concrete methods for preparation, advantages. 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%. Chapter 6 proposed mix design method for hpc and validity mix proportioning of high performance concrete for indian environment 235 table 6. Pdf high performance concrete by pierreclaude aitcin. The required properties for concrete to be classified as high performance therefore depend on the properties of normal concrete. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm h in.
Uhpc has several advantages over conventional concrete but the use of it is limited due to. 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. High performance concrete an overview sciencedirect topics. This page contains high performance concrete seminar and ppt with pdf report. For ex ample, a normal strength concrete with very high durability and very low permeability is consid ered to have high performance properties. Tech ultrahigh performance concrete for bridge deck overlays.
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 of cost, service life and durability. The compressive strength of highperformance concrete and. Of fresh hfc behavior of hardened hfc applications case study advantage and disadvantages 2. Over and exceptionally green concrete has greater power and durability than the ordinary concrete. This entry was posted in micro silica in concrete, high strength durable concrete solutions, permeation grouting, solutions for concrete repair, tunnel grouting, uncategorized and tagged high strength concrete, durable concrete solutions, micro silica in concrete, high performance durable concrete solution. Due to low wc ratio it requires superplasticizer to achieve required workability. Unlike natural stones, concrete is free from defects and flaws. High performance concrete seminar and ppt with pdf report. High performance concrete is a crucial replacement for portland cement concrete for major construction site such as tunnel, bridge and highway roads.
The durability of the high performance concrete is longer than portland cement. The following text broadly mentions the advantages of a prestressed concrete member with an. High performance concrete seminar report, ppt, pdf for. The effects of aggregate type, size, and content on the behavior of normal and high strength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed. High performance concrete exceeds the properties and constructability of normal concrete. The high performance concrete hpc is a mixture of many materials usually 510. 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. Concrete is widely used because of its versatility, affordability, and availability of raw materials, strength, and durability. Ultra high performance concrete for bridge deck overlays introduction there is urgent need for effective and durable rehabilitation solutions for deteriorated highway bridge decks. It covers all aspects of hpc from materials, properties and technology, to construction and testing. Highperformance concrete hpc exceeds the properties and constructability of. Lightweight concrete maintains its large voids and not forming laitance layers or cement films when placed on the wall. High performance concrete hpc is a specialized series of concrete designed to provide several benefits in the construction of concrete structures that cannot always be achieved routinely using conventional ingredients, normal mixing and curing practices. High performance concrete the development of high performance concrete hpc is a giant step in making concrete a high tech material with enhanced characteristics and durability.
In some instancesssuch as when concrete can obtain high early strength. 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. It is a type of high performance concrete generally with a specified compressive strength of 6,000 psi 40 mpa or greater. To call concrete high performance implies that it is specialized. Highperformance concrete an overview sciencedirect topics. This report details the laboratory developmental work on producing high performance concrete for highway applications. Advantages disadvantages pennsylvania state university.
This research was based on the performance of aerated lightweight concrete. Easy handling and moulding of concrete into any shape. High performance concrete seminar ppt with pdf report. Since the size of members are reduced the cost of formworks are less. Ingredients of concrete are easily available in most of the places. Post navigation highperformance concrete almost always has a higher strength than normal concrete. Researchers and engineers are constantly working on improving concrete properties.
View ultra high performance concrete research papers on academia. Research, development and application in europe michael schmidt and ekkehard fehling synopsis. One of the breakthroughs in concrete technology is ultra high performance concrete with a steel like compressive strength of up to 250 nmm2 and a remarkable increase in durability compared even with high performance concrete. Its advantages are that there is a reduction of dead load, faster building rates in construction and lower haulage and handling costs. High performance concrete is necessary for the construction of high rise. High performance concrete has several advantages like improved durability characteristics and much lesser micro cracking than normal strength concrete. So, high performance concrete is superior to ordinary concrete in all properties. High strength and high performance concrete materials and. Development of high performance concrete and evaluation of.
Urban development that took place through the world in the last few decades yielded significant developments for concrete technology. 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. Using natural biopolymer chitosan to develop a highperformance superplasticizer has certain advantages in structure, resource. 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 organizations involved in concrete. Equations used in developing smooth curves for relationship between free watercement ratio and concrete strength curve exponential equation of curve a y 156.
High performance concrete have several advantages over traditional portland cement concrete. It is a concrete mixture, which holds high durability and high strength when compared to conventional concrete. High strength concrete hsc has a compressive strength greater than 55mpa having water cement ratiowc ranging from of 0. Cairo university credit hours system strn344 construction material and quality control high strength concrete references.
Advantages and disadvantages of concrete civil engineering. Within the last few decades, research has been conducted on what is known as ultra high performance concrete uhpc. Highperformance concrete may be defined as concrete with strength and durability significantly beyond those obtained by normal means. High performance concrete technology and applications. High strength concrete must meet high performance standards consistently in order for it to be effective. Concrete can be manufactured to the desired strength with an economy. These materials may cost more than materials of lower quality. So, there is a need to design high performance concrete hpc which is far superior than conventional concrete. High performance concrete is necessary for the construction of high rise building and long span bridges. Easy transportation from the place of mixing to place of casting before initial set takes place. High performance concrete and its applications in the.
Pdf practical issues for the application of highperformance. The interaction between these materials is the reason of the various workability cases, and also the different ratios and portions added causes this variability. High performance concrete give longer life span to girders, columns and slabs. The term high performance concrete hpc is relatively new, and it refers to many properties such as strength, durability, sound and. Ultrahigh performance concrete research papers academia. The concrete is made with concrete wastes which might be green so called as green concrete. Fireresistant concrete high performance concrete selfcompacting concrete high durability concrete high ductility concrete 4 concluding remarks 081027 s. Deck deterioration is commonly caused by a combination of vehicle loading, freezethaw degradation, cracking, delamination of cover concrete. Pdf in recent years, the advantages of highperformance concrete hpc have been well documented. However, strength is not always the primary re quired property. The concrete plays a very important role in all branches of civil engineering. In this paper we propose a model to evaluate the compressive. 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.
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