Mix design procedure of m20 concrete reference mix. For example, as shown by aitcin and mindess 2011, a concrete column made with 75 mpa concrete would use half as much cement, and only a third as much aggregate, as the same. Development of high performance concrete and evaluation of. The design procedure explained below is based on aci method. A new mix design method for uhpc based on stepwise. Highstrength concrete is achieved at low water to cement ratio which is obtained by adding water reducing plasticizer or high range water reducing plasticizer. 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. The process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design. Study of mix design for high performance concrete 105 study.
The materials combination of superior properties facilitates the ability to design thin, complex shapes. Concrete mix design definition concrete mix design is defined as the appropriate selection and proportioning of constituents to produce a concrete with predefined characteristics in the fresh and hardened states. 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. Since rheological parameters and compressive strength are fundamental properties of concrete in two. A mix design was developed that consistently yielded 28day compressive strength in excess of 10,000 psi. Materials and methods for high performance concrete. Stepwise optimization of particle packing density kim huy hoang, philipp hadl, nguyen viet tue institute of structural concrete, graz university of technology, austria abstract. 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. We are going to illustrate a m60 concrete incorporating silica fumes,flyash,a hrwra with other conventional conventional ingredients. Since rheological parameters and compressive strength are fundamental properties of concrete in two different stages of production, the correlation between rheological parameters and compressive strength has been used instead of using watercement ratio. Chapter 6 proposed mix design method for hpc and validity mix proportioning of high performance concrete for indian environment 231 admixture such as micro silica. In general, concrete mixes are designed in order to achieve a defined workability, strength and durability.
Mix design of high strength concrete methods, procedure, example. The total quantity of materials called as binders thus will include both cement and desired quantity of mineral admixture micro silica. This paper presents a new approach which is based on stepwise optimization of particle packing density for ultra high performance concrete uhpc mix design. The printing process is a novel digitally controlled additive manufacturing method which can build. High performance concrete hpc exceeds the properties. Where as in conventional cellular concrete these can not be achieved. Measured moe values represented the upper bound for the range of values reported in other literature. Final report of alkalisilica reactivity testing of montana aggregates. This strategy was incorporated into the concrete mix design in order to allow for the potential of strength loss in the production process at the batch plant, or. Ultrahigh performance concrete research papers academia. For the purposes of this specification, high performance concrete hpc is considered as. View ultra high performance concrete research papers on academia.
Coke is partially oxidized to carbon monoxide, which reduces the ores to iron. Mix design and fresh properties for highperformance. Pore refinement high performance high early age and ultimate compressive strength etc. High strength concrete and high performance concrete happho. Pdf a mix design procedure for highperformance concrete mixes has been presented in this paper.
This paper describes a prototype expert system called hpcmix that provides proportion of trial mix of high performance concrete hpc and recommendations. The allowable concrete tensile stress used in flexural design of hpc girders should be limited to 6. This report presents the development of ultra high performance concrete uhpc using locally available materials thatreduce construction costs compared with commercial products. However, strength is not always the primary required property. High performance concrete pavements project summary office of infrastructure office of pavement technology washington, dc 20590 publication no. An example of proportioning a mix design through use of this form is detailed in table 3.
With the aim of achieving a specified compressive strength of 20 ksi, a uhpc mixture is formulated. Highperformance concrete hpc does not necessarily require high strength but the mix proportioning should be such that permeability is as low. Mix design of highperformance concrete directory of. Based on the experience of the author and studies worldwide, it is seen and proved that hpc can only be made with the best materials and practices available.
Jan 19, 2012 this paper presents the experimental results concerning the mix design and fresh properties of a high performance fibrereinforced fineaggregate concrete for printing concrete. For the purposes of this specification, high performance concrete hpc is considered as concrete engineered to meet specific needs of a project. As a result of recent concrete research, new mixes were created incorporating various quantities of fly ash. High performance concrete seminar and ppt with pdf report.
Highperformance concrete is defined as 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. Only when every step of the process above is given due diligence, will the resulting concrete end up as high performance concrete. Concrete mix design is the process of detrmining right proportions of cement, sand and aggregates for concrete to achieve target strength of concrete. High strength concrete, aggregates, admixtures, aci mix design, compressive strength. Stonemontqc is fully integrated with the aggregate portion allowing for mix component properties to be easily kept current with data from aggregate plants. Performancebased concrete pavement mix design system the final product of this track will be a practical yet innovative concrete mix design procedure with new equipment, consensus target values, common laboratory procedures, and full integration with both structural design and field quality control a lab of the future.
Mix design of highperformance concrete moulds became dry, wax based curing compound was sprayed on the surface of concrete. Do not increase the water content beyond the tolerance allowed in specification 2461. According to richard and cheyrezy, uhpfrc represents the highest development of high. This paper presents the experimental results concerning the mix design and fresh properties of a high performance fibrereinforced fineaggregate concrete for printing concrete.
The afrem method for the mixdesign of high performance concrete. Pdf an expert system for mix design of high performance. Concrete mix design is the process of finding the proportions of concrete mix in terms of ratios of cement, sand and coarse aggregates. Strength requirements will be as specified for grade p1 concrete. Using highstrength concrete or highperformance concrete with a low wb ratio in structural applications is more sustainable than normal strength concrete. The printing process is a novel digitally controlled additive manufacturing method which. Performance based concrete pavement mix design system the final product of this track will be a practical yet innovative concrete mix design procedure with new equipment, consensus target values, common laboratory procedures, and full integration with both structural design and field quality control a lab of the future. Bickley and fung 2001 demonstrated that 40 mpa 6,000 psi high. High performance concrete seminar ppt with pdf report.
The contractor establishes the initial parameters for a mix design and serves as the starting point for subsequent proportioning calculations. After 24 hours of casting, concrete cubes were cured in a curing tank for 28 days. This class of concrete has been demonstrated to facilitate solutions that address specific problems in the u. The document provides mandatory language that the specifier can cut and paste into project specifications. Mix design of high performance concrete using silica. The term ultra high performance concrete uhpc refers to a relatively new class of advanced cementitious composite materials whose mechanical and durability properties far surpass those of conventional concrete. The mix design of high strength concrete is similar to conventional concrete with minor variations because the volume of mineral admixtures is calculated too. For all the high performance concrete mixes 100 % vsi crushed sand was used. Ground granulated blast furnace slag ggbfs in the blast furnace, magnetic iron ore fe3o4 and haematic iron ore fe2o3 are fed along with limestone into a high temperature chamber containing coke. Concrete mix design step by step full calculation civiconcepts. They found that when the nozzle diameter is 9 mm, a combination of 0. High strength and high performance concrete materials and.
Concrete high earlystrength concrete, also called fasttrack concrete, achieves its specified strength at an earlier age than normal concrete. High performance concrete hpc is concrete that has been designed to be more durable and, if necessary, stronger than conventional concrete. 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. Explore high performance concrete with free download of seminar report and ppt in pdf and doc format. Prescriptive approach performance approach mix design requirements are based on intended use, exposure conditions etc. High performance concrete pavements transportation. This report details the laboratory developmental work on producing high performance concrete for highway applications. Guide specification for high performance concrete for bridges. 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. The initial step in proportioning the mix design is to calculate the water content per cubic yard of concrete. Pdf mix design and fresh properties for highperformance. A mix design procedure for highperformance concrete mixes has been presented in this paper. The specified design strength of concrete is 30 mpa at 28 days measured on standard cylinders. Ultra high performance fibre reinforced concrete uhpfrc is a combination of high strength concrete and fibres.
Concrete mix design concrete mix design is the process to select suitable constituent materials and determine required and specified characteristics of a concrete mixture. Highperformance concrete almost always has a higher strength than normal concrete. Except as modified herein, the contractor is responsible for determining the concrete mixture proportions mix design according to section 605 of the standard specifications for constructi on. Since rheological parameters and compressive strength are fundamental properties of concrete in two different stages of production, the correlation between rheological parameters and. The degree of workability necessary in a concrete mix depends entirely upon the purpose for which it is used and the methods and equipment used in handling and pl acing it in the work. Abstract in present research work a thorough study and analysis of mix design of high performance concrete has been done. Data to be collected design a concrete mix for construction of an elevated water tank. This design guide serves to extend the use of concrete beyond grade 60 in the design of concrete structures using cp65. Concrete mix design one of the ultimate aims of studying the various properties of the materials of concrete, plastic concrete and hardened concrete, is to enable a concrete technologist to design a concrete mix for a particular strength and durability. High performance concrete is necessary for the construction of high rise building and long span bridges. For example, a normal strength concrete with very high durability and very low permeability is considered to have highperformance properties. Mechanical properties of high performance printing concrete reinforced with steel fibres with different lengths 3 and 6 mm at different fibre volume contents 0. Since rheological parameters and compressive strength are fundamental properties of concrete in two different stages of production, the correlation between rheological parameters and compressive strength has been used instead of using watercement ratio versus compressive strength relationship.
The article presents the results of work by the afremhpc group on the formulation of high performance concretes. It is a type of high performance concrete generally with a specified compressive strength of 6,000 psi 40 mpa or greater. Since rheological parameters and compressive strength. 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.
The mix design must experience minimal creep and shrinkage to reduce prestress losses, and shrinkage cracking. Habitat connectivity and rural context sensitive design within the northern rockies and upper great plains. Fhwa uhpc is a cementitious composite material composed of an optimized gradation of granular constituents, a watertocementitious materials ratio less than 0. A mix design procedure for high performance concrete mixes has been presented in this paper.
The conditions that prevail at the site of work, in particular. Pdf mix design of highperformance concrete researchgate. High performance concrete is a concrete having high strength. Concrete mix design and quality control software management system stonemontqc includes a powerful concrete mix design and quality control software program for concrete producers. An expert system for mix design of high performance concrete. The consistency of the mix, relative to the wetness or dryness, will affect the workability to a large degree. Highperformance concrete an overview sciencedirect topics. The goal is a methodology making it possible, for a given binder or mixture of binders, to determine the saturation doses of a certain number of superplasticizers and compare them in terms of their effectiveness and the duration of the. 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 advantages of concrete mix design is that it gives the right proportions of materials, thus making the concrete use economical in achieving required strength of structural members. This page contains high performance concrete seminar and ppt with pdf report. In particular, it is a super plasticised concrete, reinforced with fibres, with an improved homogeneity because traditional coarse aggregates are replaced with fine sand. Feasibility of the use of existing analytical models and experimental data to assess current design methods for pavement geogridreinforced base layers.
This concrete has been designed to be extruded through a nozzle to build layerbylayer structural components. It can be done by two methods is code method and aci method. High performance concrete seminar report, ppt, pdf for. Compressive strength was determined after 28 days and the average of three readings were reported as the required strength. Mix design procedures aci mix design relationship between watercement ratio and compressive strength of concrete 28day compressive nonae ae strength psi 2,000 0. Measured mor values compared well with results reported in other literature. Pdf development of mix design for high strength concrete with. The present investigation aims to give design mix for. It is a concrete mixture, which holds high durability and high strength when compared to conventional concrete. Highperformance concrete is produced by careful selection of raw materials such chemical admixtures and appropriate mix design to achieve the desired performance objectives. Mix design of high performance concrete hpc is different from that of usual concrete because of the following reasons. Mix design and fresh properties for highperformance printing. High performance concrete is defined as 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. Samsung planned for the production of high performance concrete, the concrete mix design was targeted to be 15 mpa higher for g40 concrete and below, and 20 mpa for g60 concrete and above.