High performance concrete is a term used to describe concrete with special properties not attributed to normal concrete. Highperformance concrete is a term used to describe concrete with special properties not attributed to normal concrete. Report on high strength concrete reported by aci committee 363 aci 363r10 this report summarizes currently available information about high strength concrete hsc. He is the current chair of the american concrete institute committee 363 on highstrength concrete. Properties and performance of normalstrength and high.
Researchers conducted an experimental program to investigate production techniques and mechanical properties of high strength concrete and to provide recommendations for using these concretes in manufacturing precastprestressed bridge girders. Influence on properties of concrete pozzolanic reaction in the contact zone 6. Product data sheet high strength concrete page 1 of 2 l621. Microstructure analysis and strength properties of. Strength levels of 80 to 100 nmm2and even higher are being used for both precast and in situworks. S dadapeer2, pg student, structural engineering, crit anantapuramu 2 head of the department, dept. Producing high strength concrete hsc is always one of the major goals of concrete technology.
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. Pdf project report on highstrength concrete mix design. The less water in the mix, as long as it is workable and not too stiff, the stronger, more durable, and watertight the concrete. Properties of concrete while cement in one form or another has been around for centuries, the type we use was invented in 1824 in britain. Today compressive strengths exceeding 20,000 psi 140 mpa have been used in castinplace buildings. Due to low wc ratio it requires superplasticizer to achieve required workability.
High strength concrete is specified where reduced weight is. Preconstruction and construction procedures are covered, including planning trial mixtures, preconstruction meetings, batching, placing, curing, and testing. In the 1960s, concrete with compressive strengths of 6000 and 7500 psi 41 and 52 mpa were produced commercially. Proportioning a concrete mix for a given purpose is the art of obtaining a suitable ratio of various ingredients of concrete with the required. The influence of nanosilca on mechanical properties of high strength concrete ksenija jankovi 1. The variables included normal versus highstrength concrete, with and without steel fibres. This paper presents data related to the development of highstrength concrete with special emphasis on the development of high early strength. How it works chronolias exceptional early strength gain is possible thanks to the technological advances in its formulation. The influence of desert sand replacement ratio on the compressive strength and specific energy absorption of high strength desert sand concrete was analyzed.
Jan, 2016 highvalue concrete highstrength concrete materials 9. The development of high strength concrete has been a great breakthrough in concrete technology. Concrete is one of the necessary elements for structural work in the modern construction. Earlier researches showed an improvement in mechanical properties of high strength concrete with. Both these objectives were achieved by using an ultrafine portland cement with a specific surface of about 750 m 2 kg or a high early strength portland cement with about 75% tricalcium silicate content. Introduction it is important to note the highstrength and highperformance concrete are not synonymous. Highearlystrength concrete highearlystrength concrete, also called fasttrack concrete, achieves its specified strength at an earlier age than normal concrete. Greater building height became possible as concrete strength increased. International codes propose a wide variety of formulae which establish a relationship between modulus of elasticity and compressive strength. In the decade, buildings around the world have become higher and so the structural strength demand for concrete is increased, they require high strength. The temperature that concrete has reached often can be determined by observing color changes in the aggregate. Concrete is a mixture of portland cement, water, coarse and fine aggregates and sometimes admixtures. Most of these codes are valid up to 50 mpa, the usual limit for normal concretes.
Hardened concrete will have no footprints on it if walked on. Mechanical properties of highstrength concrete manish kumar1, a. For more than thirty years, high strength concrete with compressive. Do not increase the water content more than 5% over that used with th e normal cement content. Earlier researches showed an improvement in mechanical properties of high strength concrete with finely ground rha as a partial cement. Using high strength concrete hsc elements is another modern trend in construction. Ultrahighperformance concrete uhpc is defined as concrete that has a minimum specified compressive strength of 150 mpa with specified durability tensile ductility and toughness requirements. Increasing the cement content 30% produces high early strength concrete. Optimal applications of highstrength concrete in structural walls of tall buildings by budi galianto bong supervised by associate professor mike xie and dr. Highstrength concrete and highperformance concrete are not synonymous because strength and performance of concrete are different properties of concrete. The main activities for controlling quality on site are placing, compaction, curing and surface finishing. Concrete is defined as highstrength concrete solely on the. The paste is composed of cement, water, and entrained air and ordinarily constitutes 20 to 40 percent of the total volume.
Properties and performance of normalstrength and highstrength concrete 53 resulting in the need to adjust the mix for environmental conditions. Commercially available and laboratoryprepared concrete mixtures with 28d compressive strengths of 45 to 110 mpa were tested. Highstrength concrete is defined based on its compressive strength at a given age whereas highperformance concrete is defined based on. The high strength concrete has a lower value of permeability compared to normal strength concrete. Properties of highstrength concrete astm international. The first reinforced concrete high rise was the 16story ingalls building, completed in cincinnati in 1903. The relations between the compressive strength of concrete destructive method and the values measured by using nondestructive methods are known for ordinary concrete, but. 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. Hsc is predominantly used in structural elements, loaded by high compressive forces, such as columns in building or bridge constructions. The first reinforced concrete highrise was the 16story ingalls building, completed in cincinnati in 1903. In the 1950s, concrete with a compressive strength of 5000 psi 34 mpa was considered high strength. Microsilica, fly ash, ground granulated blastfurnace slag, calcined clay, metakaolin, and calcined shale, supplementary cementitious materials which contribute to the strength gain of concrete.
Evaluation of relationship between mechanical properties of high strength self compacting concrete s. Michael caldarone is a professional engineer with over 20 years experience in concrete material engineering and has been involved with many of the worlds most notable projects involving highstrength concrete. As concrete mixture temperature is increased from 73f 23c, slump will decrease approximately 0. Two series of high strength concrete representing a total of fifteen mixes were investigated with respect to strength, modulus of elasticity, shrinkage and freezethaw resistance.
The concept of prequalifying suppliers and laboratories is introduced. When used correctly it will typically achieve a 28day compressive strength of 40 nmm2. Highstrength concrete properties derived from compressive strength values article pdf available in cement concrete and aggregates 172. In the 1950s, 34 mpa 5000 psi was considered high strength. Topics discussed include selection of materials, concrete mixture proportions, ordering, batching, mixing, transporting, placing, quality control, concrete properties, structural design, economic considerations, and. The high strength concrete has a permeability coefficient that ranges from 1 x 10 11 to 1 x 10 cmsec. Mechanical properties of highstrength concrete manish.
To successfully proportion high strength mixtures carefully selected cement, mineral admixtures, chemical admixtures, aggregates, and low watertocementitious ratios are employed. Product data sheet high strength concrete page 1 of 2 tarmac high strength concrete 40n is a premixed strong and hardwearing concrete manufactured from cement, specially selected and graded sand, and 10 mm coarse aggregate. Project team members anik yadav 09103009 shayon ghosh 09102072 dr b r ambedkar national institute of technology batch 200920 high strength m70 and high performance concrete final year project report. Mechanical properties of high strength desert sand concrete. Concrete that is sloppy or wet may be easy to place but will be more difficult to finish. Mechanical properties of high strength concrete manish kumar1, a. The paste is composed of cement, water, and entrained air and. Chapter 1 components of concrete concrete is made up of two components, aggregates and paste. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm h in. While all highstrength concrete is also highperformance, not all. Site experience indicates that more compaction is normally needed for high strength concrete with high. High temperatures also affect the compressive strength of concrete. 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. Whatever be the type of concrete say normal or high strength, the mixed fresh concrete must be plastic or semifluid in nature so that it can be molded by hand or by using any mechanical means.
Highperformance concrete hpc is a relatively new term for concrete that conforms to a set of standards above those of the most common applications, but not limited to strength. This paper compares compressive strength, splitting tensile strength, flexural strength, and modulus of elasticity values to similar results predicted by national codes and alternatives suggested by various researchers. Mechanical properties of rice husk ash rha high strength. Abrishami and mitchell have studied the structural response of reinforced concrete tension members. It is a type of high performance concrete generally with a specified compressive strength of 6,000 psi 40. Highperformance means that the concrete has one or more of the following properties. Evaluation of relationship between mechanical properties. Many researchers have investigated experimentally and theoretically behaviour of hsc structures. Highstrength concrete hsc has a compressive strength greater than 55mpa having water cement ratiowc ranging from of 0. Hardening state after concrete has set it begins to gain strength and harden. Properties of concrete concrete is an artificial conglomerate stone made essentially of portland cement, water, and aggregates. Fresh and hardened properties of high strength self. The properties of hardened concrete are strength and durability. Highvalue concrete highstrength concrete materials 9.
Explore high performance concrete with free download of seminar report and ppt in pdf and doc format. In order to research on the mechanical properties of high strength desert sand concrete, the compressive experiment of high strength desert sand concrete with different desert sand replacement ratio was carried out. Effect of steel fibres on mechanical properties of high. Therefore, a high strength in compression and flexure as well as tensile bond is the main target in developing this concrete. The influence of steel fibres on the control of splitting cracks and on tension stiffening was investigated. The use and definition of highstrength concrete hsc has seen a gradual and continuous development over many years. Hardened properties of highperformance printing concrete.
Much of the air is removed by compaction, which is achieved by either immersing highfrequency vibrators into the fresh concrete or attaching them to the outside faces of the formwork fig. Shop sakrete 80lb high strength concrete mix in the concrete mix section of. The modulus of elasticity of high performance concrete. To determine the modulus of elasticity of concrete precisely is very important for structures that require strict control of the deformability. Since rheological parameters and compressive strength are fundamental properties of concrete in two. Srinivasa rao3,dr sravana 4 1 deputy executive engineer, tirumala tirupathi devasthanams, hyderabad 2 principal ashoka institute of engineering and technology. High early strength concrete high early strength concrete, also called fasttrack concrete, achieves its specified strength at an earlier age than normal concrete. Mechanical properties of highstrength concrete manish kumar. The bond between filaments, as well as between layers, probably influences the hardened properties of concrete components.
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. Cip 33 high strength concrete what is high strength concrete. Topics discussed include selection of materials, concrete mixture proportions, ordering, batching, mixing, transporting, placing, quality control, concrete properties, structural design, economic considerations, and applications. 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. Introduction to concrete portland cement association. Following extensive research and development the microstructure of the concrete is optimised at an early age. The purpose of this document is provide specific industry guidelines for the selection and proportioning of high strength. High strength concrete hsc has a compressive strength greater than 55mpa having water cement ratiowc ranging from of 0. Highearly strength 56 19 10 7 540 iv 28 49 4 12 380. This is because the high strength concrete is designed with lower water cement ratio. Highstrength concrete properties derived from compressive. Mendis a thesis submitted in fulfilment of the requirement for the degree of master of engineering at the victoria university of technology school of the built environment. The availability of commercially produced highstrength concrete can be traced back to the late 1950s. Researchers conducted an experimental program to investigate production techniques and mechanical properties of highstrength concrete and to provide recommendations for using these concretes in manufacturing precastprestressed bridge girders.
Topics discussed include selection of materials, concrete mixture proportions, ordering, batching, mixing, transporting. A mix design procedure for highperformance concrete mixes has been presented in this paper. Concrete quality varies widely, depending on the characteristics of its ingredients and the proportion of the mix. Pdf properties of high strength concrete using a high fly. Chronolia achieves both high early strength and high ultimate strength, providing a very durable concrete. Pdf properties of high strength concrete using a high. Optimal applications of high strength concrete in structural walls of tall buildings by budi galianto bong supervised by associate professor mike xie and dr.
High performance concrete seminar report, ppt, pdf for. Too much water dilutes cement paste binder, resulting in weak and porous concrete. The potential of rice husk ash as a cement replacement material is well established. Experimental work the aim of this study is to investigate the possibility of application and impact of nanosilica in high strength concrete. In many markets worldwide, the commercial availability of concretes capable of developing compressive strength three to. High performance means that the concrete has one or more of the following properties. Much of the air is removed by compaction, which is achieved by either immersing high frequency vibrators into the fresh concrete or attaching them to the outside faces of the formwork fig.