Self compacting concrete scc advantages and disadvantages. View ultra high performance concrete research papers on academia. Applications and limitations of highstrength concrete in. From fundamental to applications article pdf available in case studies in construction materials 9 september 2018 with 2,325 reads. Apr 21, 2015 concrete is the most widely used construction material in india with annual consumption exceeding 100 million cubic meters. View ultrahigh performance concrete research papers on academia.
The interaction between these materials is the reason of the various workability cases, and also the different ratios and portions added causes this variability. The high performance concrete hpc is a mixture of many materials usually 510. Early high strength concrete advantages and challenges. A large scale of precast construction projects must be available to ensure sufficient profit. Advantages and disadvantages of lightweight concrete. Jun 09, 2015 the monolithic character of concrete gives it better appearance and much rigidity to the structure.
High performance concrete is a concrete having high strength, high durability, high resistance to chemical attack and high workability. The materials are batched at a central plant, and the mixing begins at that very plant. The volume of co2 emitted by hpc is lower than portland cement concrete. What are the disadvantages of fiber reinforced concrete. While highstrength concrete aims to enhance strength and consequent advantages owing to improved strength, the highperformance concrete hpc is used to refer concrete of required performance for the majority of construction applications. The definition of high performance concrete utilized for the project includes high strength concrete, workability, and durability. This page contains high performance concrete seminar and ppt with pdf report. Highperformance concrete specifications ideally should be performance oriented. 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. The limitations of existing prestressed concrete girders relative to the use of highstrength con crete and several options to more effectively utilize highstrength concrete are described. Due to low wc ratio it requires superplasticizer to achieve required workability. Hpc is a concrete mixture which possess high workability, high strength, high.
High strength concrete is defined based on its compressive strength at a given age. As it is a material that needs simple equipments for preparation, transport, densification and vibration, it does not require very specialized workmanship. Several distinct advantages and disadvantages can be analyzed. 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%. For installing a precast concrete plant, heavy and sophisticated machines are necessary which requires a high initial investment. Hpc mixtures are composed of essentially the same materials as conventional concrete mixtures, but the proportions are designed, or engineered, to provide the strength and durability needed for the structural and environmental requirements of the project. Hence, high performance concrete is a better replacement over traditional portland cement concrete. In this paper we propose a model to evaluate the compressive. High strength and high performance concrete materials and. Concrete is the most widely used construction material in india with annual consumption exceeding 100 million cubic meters. High performance concrete may be defined as concrete with strength and durability significantly beyond those obtained by normal means. Modulus of elasticity and poissons ratio the modulus of elasticity and poissons ratio were conducted on 21 cylinders at age of 28 days. For example, while concrete becomes stronger and more durable with time, it is susceptible to water and freezing temperatures, meaning that water can seep into cracks and cause.
High performance concrete methods for preparation, advantages. For the purposes of this document, uhpc is limited to concrete that has a minimum specified compressive strength of 22,000. So the travelling time from the plant to the site is critical over longer distances. This report details the laboratory developmental work on producing high performance concrete for highway applications. The advantage of highstrength concrete hsc in highrise buildings.
While high strength concrete aims to enhance strength and consequent advantages owing to improved strength, the high performance concrete hpc is used to refer concrete of required performance for the majority of construction applications. It is important to consider all peripheral results of selecting highstrength concrete since special considerations must be addressed beyond strength properties. High performance fiber reinforced lightweight concrete. Concrete is an inexpensive, quick and durable way to complete many construction projects. However, high performance concrete contains some environmental drawbacks also such as emission of co2. Development of high performance concrete and evaluation of. However, there are advantages and disadvantages associated with this material. Using fly ash in concrete is environmentally beneficial because it reduces the portland cement a major contributor of co2 required in concrete. Caldarone, and journal of mechanical and civil engineering. Highperformance concrete an overview sciencedirect topics. Aug 30, 2017 among the main advantages of reinforced concrete is the fact that it is economical, since it has raw material with not very high cost, and the relative speed of construction.
Jul 17, 2017 fly ash is a byproduct from coalfired power plants that is frequently used as an admixture in concrete to replace a portion of the portland cement. The property of concrete to possess high compressive strength makes a concrete structure more economical than steel structure. Highperformance concrete hpc exceeds the properties. Pdf the advantage of highstrength concrete hsc in highrise. Effect of steel fibers on behavior of ultra high performance concrete hamdy k. Self compacting concrete is a highperformance concrete which is highly flowable or selfleveling cohesive concrete that can be easily placed in the tight reinforcement. It is a concrete mixture, which holds high durability and high strength when compared to conventional concrete.
Explore high performance concrete with free download of seminar report and ppt in pdf and doc format. From area saving aspect sinit tsegaye a thesis submitted to the school of civil and. From fundamental to applications article pdf available in case studies in construction materials 9. Structurally, the benefits of using highstrength concrete are fewer girders for the same width bridge, longer span lengths or reduced dead load. Scc requires high fluidity in tight joints formwork, which slow downs the casting rate. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm h in. Concrete changes from a liquid to a solid a few hours after pouring, but the curing process may take much longer. High performance concrete seminar ppt with pdf report. High performance concrete can be used to make sustainable admixture. As additional literature for deeper study on highstrength concrete is the book highstrength concrete 3, by michael a. Once it is decided to use highstrength, highperformance concrete, the mix design and production process can begin.
High strength concrete and high performance concrete. 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. Advantages and disadvantages of reinforced concrete. Highperformance concrete has been primarily used in tunnels. The compressive strength of silica fume concretes was investigated at low watercementitious materials ratios with a naphthalene sulphonate superplasticizer. The compressive strength of highperformance concrete and. Advantages and disadvantages of geopolymer concrete the main advantages and disadvantages of geopolymer concrete are listed here.
Fiber reinforced concrete is used to improve the performance of concrete cracking and shrinkage problems. Highperformance concrete may be defined as concrete with strength and durability significantly beyond those obtained by normal means. High strength concrete resists loads that cannot be resisted by normalstrength concrete. Jun 24, 2019 construction and building materials, 20 geopolymer concrete has high tensile strength. Table 172 lists properties that can be selected for highperformance concrete. High strength concrete and high performance concrete are not synonymous because strength and performance of concrete are different properties of concrete. Limitations of concrete or disadvantages of concrete 8. Pdf in recent years, the advantages of highperformance concrete hpc have been well documented. Jan 20, 2016 3 advantages of using high strength concrete posted on january 20, 2016 by alccofine the empire state building, burj khalifa, burj al arab, etc. Workability characteristics of the fresh concrete are analyzed and hardened concrete properties tested in this research are compressive strength, chloride ion permeability, and. 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. Two of the distincitive features of lightweight concrete are its low density and thermal conductivity. The limitations of existing prestressed concrete girders relative to the use of high strength con crete and several options to more effectively utilize high strength concrete are described.
The weight of compared is high compared to its strength. High performance concrete have several advantages over traditional portland cement concrete. In other words all the mechanical properties of concrete are superior in a high performance concrete. Among the main advantages of reinforced concrete is the fact that it is economical, since it has raw material with not very high cost, and the relative speed of construction. The required properties for concrete to be classified as high performance therefore depend on the properties of normal concrete. Compared to other binding materials, the tensile strength of concrete is relatively low. The concrete mix proportions given in table 1, was developed by andra french agency for nuclear waste management for nuclear waste repository structures in deep geologic formations.
So, high performance concrete is superior to ordinary concrete in all properties. Highstrength concrete hsc has a compressive strength greater than 55mpa having water cement ratiowc ranging from of 0. Download fulltext pdf ultrahigh performance concrete. 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. Fly ash in concrete improves performance in some ways, but it also has some disadvantages. The monolithic character of concrete gives it better appearance and much rigidity to the structure. Mohamed, mahmoud abd elhakkhater and sayed ahmed 3 table 1. High performance concrete hpc, a material widely utilized in heavy structural construction is a cheap and dependable material that can be studied to reach its optimum performance. Not all properties can be achieved at the same time. The required properties for concrete to be classified as high performance therefore depend on the. Some sites are just too far away, which can risk that ready mix concrete may. 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. Self compacting concrete scc advantages and disadvantages self compacting concrete.
Since these buildings depend on sun for energy, they need to be located in position that will have the best sun exposure which may demand placing them opposite to other neighborhood homes. High performance concrete an overview sciencedirect topics. 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. High performance concrete seminar report, ppt, pdf for. A high performance concrete was used to carry out the tests. High performance concrete hpc is concrete that has been designed to be more durable and, if necessary, stronger than conventional 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.
As soon as some tension is developed, it will lose its stiffness. Highstrength concrete provides a higher compressive strength, a higher modulus of. Advantages of reinforced concrete reinforced concrete has a high compressive strength compared to other building materials. Unless otherwise indicated, all materials in this pdf are ed by the. Highstrength concrete pennsylvania state university. Development of high performance concrete and evaluation.
The highperformance concrete hpc is a mixture of many materials usually 510. 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. During 1970s, any concrete mixtures which showed 40 mpa or more compressive strength at 28 days were. 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. 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. 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. As a soundproofing material cinder concrete could be used. Highstrength concrete resists loads that cannot be resisted by normalstrength concrete. Unfortunately, many specifications are a combination of performance. Hpc mixtures are composed of essentially the same materials as conventional concrete mixtures, but the proportions are designed, or engineered, to provide the strength and durability needed for the structural and. Sep 12, 2017 concrete is an inexpensive, quick and durable way to complete many construction projects. Construction and building materials, 20 geopolymer concrete has high tensile strength. High strength concrete hsc has a compressive strength greater than 55mpa having water cement ratiowc ranging from of 0. 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.
Ultrahighperformance concrete uhpc is a class of advanced cementitious materials with greater strength, tensile ductility, and durability properties when compared to conventional or even highperformance concrete. The limitations of existing prestressed concrete girders relative to the use of. High performance concrete seminar and ppt with pdf report. Due to the provided reinforcement, reinforced concrete can also. The second method is mainly used for insitu concrete, suitable for insulation roof screeds or pipe lagging. Pdf practical issues for the application of highperformance. Ultrahigh performance concrete research papers academia. It continues to gain strength for weeks after its initial setting period. Disadvantages of readymix concrete following are the disadvantages of readymix concrete. 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. It is a type of high performance concrete generally with a specified compressive strength of 6,000 psi 40 mpa or greater. 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. Effect of glass powder and ggbs on strength of fly ash. Advantages and disadvantages of concrete civil engineering.