high performance concrete mix design

The primary aim of a mix design method is to obtain proportions of concrete ingredients that can be used for a first trial batch to produce a certain concrete for a particular strength, long term qualities and performance. For commercial applications there has been continuous demand for material with higher and higher compressive strength. added into UHPC for improving the ductility and energy absorption capacity of concrete, the term ultra-high performance fibre reinforced concrete (UHPFRC) is then used. Keywords High-performance concrete Orthogonal test Mix design Optimization This is a preview of subscription content, log in to check access. relationship between design parameters and rheological properties. Instead of using water-cement ratio and compressive strength relationship, relationship between compressive strength, paste volume-aggregate volume ratio, physical properties of aggregates and rheological parameters were used in mix design. The water-cement ratio can be obtained from Figure 4 for a given target strength. Locally available alluvial sand (medium; specific gravity = 2.6) inside the laboratory was used throughout the experimental investigation unless otherwise mentioned. i) Cement: OPC, sp gr = 3.1, 53 grade as per IS: 12269-1987. [ Links ], 5. To find a suitable composition of Geopolymer considering the parameters like strength; durability; cost; fire-resistant; weight; Initial and final setting and efficiency in order to replace the exi, 具有中等強度的高性能混凝土(HPC)，在本文內簡稱為TAICON，而就一般HPC而言，它必須擁有高流動性，而且能保持骨材不析離與材料的均勻性。在其稠度與工作性的測定上目前還沿用坍度試驗法，而以達到25公分的坍度為準，其他如採用流度試驗法等，都顯現可信度及敏感度方面的不理想性。多數學者已認定混凝土的稠度可用質流理論詮釋之，而HPC的質流行為則是發展其流動性新測驗法的基礎依據資料。本研究針對TAICON，先完成其質流行為測析，然後探求合適的工作性試驗法。 試驗結果顯示，藉由質流性質的測求，可推導出TAICON適合的組成材料配比範圍。此外，質流試驗可有效測析新拌TAICON的質流行為，並據以詮釋其稠度性質；即TAICON遵從賓漢模式，其質流特性必須由兩個參數值，即降伏應力τ0 及塑性黏滯係數μ來表示，其精確性可較坍流度之單一值表示法理想。 A medium strength high, Monitoring of workability is a critical issue since high-performance concrete is susceptible to small changes in mixture proportions that have a direct impact on workability and hardened properties. Due to their exceptional durability and strength (Compressive strengths: 130 to 250 MPa , and flexural strengths: 20 to 50 MPa), CHRYSO has developed a range of highly technical solutions to meet the most stringent requirements of UHPFRC which allow for: These correction factors were derived from the experimental results of the variation of rheological parameters with sand gradation and maximum size of coarse aggregates. The Workability of concrete. The ranges of Bingham parameters and compressive. StonemontQC includes a powerful concrete mix design and quality control software program for concrete producers. Abstract This paper presents the experimental results concerning the mix design and fresh properties of a high-performance fibre-reinforced fine-aggregate concrete for printing concrete. The details of the, It was observed that optimum dose of high range water reducing, Since water-cement ratio is not a good predictor of strength in case, of HPC, relationship between water-cement ratio and compressive, strength has not been used. IS 12269-1987: Specifications for 53 Grade Ordinary Portland Cement. Download preview PDF. Instead of using water-cement, compressive strength, paste volume-aggregate volume ratio, physica, design. StonemontQC is fully integrated with the aggregate portion allowing for mix component properties to be easily kept current with data from aggregate plants. sand gradation and maximum size of coarse aggregates. 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 water-cement ratio versus compressive strength relationship. Mehta PK and Aitcin PC. According to Canadian Portland Cement Association, the trial mix approach is the best for selecting proportions for HPC9. Fundamentals of high performance Concrete. Vancouver: For the determination of. many properties of concrete that can be specified, e.g., workability, strength, density, thermal RILEM; 1993. p. 201-208. References. sting material OPC (Ordinary Portland Cement). We represent a perfect amalgamation of concrete solutions that have proven the test of time. ... Also, a standard mixture design for high performance concrete does not exist -for each specific application a different mixture design is required. Portland Cement. The, detail of the set up was presented elsewhere, total torque in the present rheometer is given by, h (effective gap between bottom of the vane plate and the bottom of, Equation 1, one has the following equation, moulds became dry, wax based curing compound was sprayed on, the surface of concrete. Prior to curing by water, wax based curing compound was used after 2 hours from casting up to 24 hours. i) Cement: OPC, sp gr = 3.1, 53 grade as per IS: 12269-1987. ii) Sand: zone III as per IS: 2386-1963, sp gr = 2.6, iii) Coarse aggregate: crushed, 16 mm msa, sp gr = 2.6. High Performance Concrete can be designed to give optimized performance characteristics for a given set of load, usage and exposure conditions consistent with the requirements of cost, service life and durability. Correlating Slump, Slump Flow, Vebe and Flow Tests to Rheological Parameters of High-Performance Con... Effect of Plasticizer and Superplasticizer on Rheology of Fly-Ash-Based Geopolyrner Concrete, Rheology of Fly-Ash-Based Geopolymer Concrete. Bingham parameters, such as yield stress and plastic viscosity, are affected by the molar strength of the sodium hydroxide solution and the ratio of silicate to hydroxide solutions. Corrections are to be made in the mix design for different zones of, sand and maximum size of coarse aggregates. In fact, a high early strength may bring far more practical and economic benefits than a high strength at a later age, in terms of early removal of formwork, increased productivity of precast units, early transfer of pre-stress, and early application of service loads. Plastic viscosity, however, shows optimum value for maximum compressive strength. The time taken to achieve a specific strength is an important economic and design parameter in high strength concrete construction. The method, discussed in this paper is related to calculation of the composition, of concrete containing poly-carboxylic ether polymer as HRWRA. The addition of fiber reinforcement in a discrete form improves many engineering properties of concrete. In this study the rheological behavior of the TAICON will be firstly investigated and then to develop an appropriate test method for the workability. The torque provided by the rheometer was calibrated in terms of input AC voltage by rotor blocking method. The following mixing sequence was adopted: A large number of high-performance concrete mixtures were prepared in the laboratory for the present study. Microstructural basis of selection of materials and mix proportion for high strength concrete. • High Performance Concrete has to be manufactured much more carefully than normal concrete. (e) To provide protection consistent with the durability of the structure during its design life. In this paper, a new method of mix design procedure has, been discussed for design of high strength HPC. A new concrete rheometer has been presented including its concept, actual design, working principle, calibration, and repeatability. In the present study, concrete was sheared at each step for 30 seconds. Shah SP and Ahmad SH. Indian Standard - IS. Prior to curing by water, wax based curing, compound was used after 2 hours from casting up to 24 hours. For the determination of rheological parameters, average of three readings was taken. ii) Sand: zone II as per IS: 2386-1963, sp gr = 2.6, iii) Coarse aggregate: crushed, 10 mm msa, sp gr = 2.6. iv) HRWRA: Poly-carboxylic ether polymer, no mineral admixtures. The physical properties of aggregates were determined as per IS: 2386-199712. Examples of Mix Design of HPC Using Proposed. Estimation of yield stress and plastic viscosity. This arrangement. Indian Standard - IS. A mix design procedure for high-performance concrete mixes has been presented in this paper. Fibers include steel fibers, glass fibers, synthetic fibers and natural fibers. According to Canadian Portland Cement, Association, the trial mix approach is the best for selecting proportions, . at on the assumption that aggregates are saturated and surface dry. It will mature to its potential strength and will not be damaged despite subsequent exposure to cold weather. Fiber-reinforced concrete (FRC) is concrete containing fibrous material that increases its structural integrity. High Performance Concrete Mix Design. 2th ed. For yield stress, the optimum sand content is 30% for minimum yield strength; between 30-40% sand, plastic viscosity is minimum. This concrete has been designed to be extruded through a nozzle to build layer-by-layer structural components. i) Cement: OPC, sp gravity = 3.1, 53 grade as per IS: 12269‑1987. The chronological development of these concretes in terms of their constituents, mixture proportions, mixing protocols, and particle packing models from selected literature are presented. All the test specimens were investigated to cover a wide spectrum of mechanical properties. Examples of Mix Design of HPC Using Proposed Method. at the design stage in addition to mix proportions for target strength. Thus, remaining two characteristics that need careful control and monitoring at the production stage are high strength and high workability. Secondly, the effects of using different percentage of steel fibers (0-2%) doses on the properties such as shear strength and flexure strength are obtained. Mix design of high performance concrete is different from that, of usual concrete because water-binder ratio is very low and it may, contain mineral admixtures which change the pro, . Study of Mix Design For High Performance Concrete 104 STUDY OF MIX DESIGN FOR HIGH PERFORMANCE CONCRETE SACHIN PATIL E-mail: jay40308@rediffmail.com Abstract— In present research work a thorough study and analysis of Mix Design of High Performance Concrete has been done. Since materials from different sources can, vary widely in their composition and physical characteristics, a trend, drawn from data for a single material source should not be extended, to all material sources. SECTION 6: HIGH PERFORMANCE CONCRETE (HPC) MIX 35 DESIGN AND PROPORTIONING 6.1 Introduction 35 6.2 Advantages of High Performance 35 Concrete in Highway Bridges 35 6.3 Mixture Proportioning I 37 6.4 Mixture Proportioning – Advanced Concepts 40 6.5 Selection of Materials Proportions 41 6.6 Specification Requirements for Strength 46 and Durability 6.7 Conclusion 47 6.8 … Moreover, slump or compaction factor can be adjusted using high range water reducing admixture (HRWRA) without altering water content. Poly‑Carboxylic Polymer (PC) with set retarding effect was used as high range water reducing admixtures (HRWRA). To design a mix for target strength = 45 MPa. The primary aim of a mix design method is to obtain proportions, produce a certain concrete for a particular strength, long term, qualities and performance. Concrete Supply is the leader in high performance mix design and technology. High performance concrete (HPC) is produced in order to meet several requirements which are crucial for the successful construction of buildings in special circumstances. Download preview PDF. The single-point workability tests nowadays are considered as incapable of providing an adequate characterization of workability of today's much more advanced concrete mixtures4,5. IS code also assumes sand content equal to 28% when zone 2 (medium) sand is used. Moreover, slump or compaction factor can be adjusted using high range water reducing admixture (HRWRA) without altering water content. Particle size, distribution of aggregates is presented in Table 1 and 2. It was observed that both the readings agreed reasonably well. Microstructural basis of selection of materials Nawy. Ultra High Performance Concrete (UHPC) is a new class of concrete that has been developed in recent decades for its exceptional properties of strength and durability. It has been observed that a critical value of molar strength of sodium hydroxide exists that is equal to 4 M. Beyond this critical, There is only limited literature available on the rheological behavior of slag-based geopolymer mortar and fly-ash-based geopolymer paste. 6. McGraw Hill Inc.; 1994. Plastic viscosity, however, shows optimum value for maximum compressive strength. concrete, and the degree of thixotropy depends on the molar strength of the sodium hydroxide solution and the ratio of silicate to hydroxide solutions. Tattersall GH and Banfill PFG. All rights reserved. National Institute of Technology, Silchar-788010, India. A spring balance anchored to a fixed object is fitted to the pulley of the spindle. All the specimens were tested according to IS specifications test set-up. Correlation charts for rheological parameters and compressive strength was developed based on cube test results of several trial mixes whose rheological parameters have also been found by the present rheometer. Balance concrete and mortar, left in the cylindrical container were cleaned manually and transferred, to the mixer. A mix design procedure for high-performance concrete mixes has been presented in this paper. The no-slip condition at, top of the cylinder is achieved by providing 20 mm high mesh of. A mix design provides a starting mix, desired concrete characteristics. In this paper, a new method of mix design procedure has been discussed for design of high strength HPC. As illustrated in example 1 above, estimated yield stress = 230 Pa and plastic viscosity = 59 Pa.s. For developing a new method to measure the fluidity of HPC it will be based on its rheological behavior. Nawy EG. Received: July 28, 2008; Revised: August 19, 2011, 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 water-cement ratio versus compressive strength relationship. IS 12269-1987: Specifications for 53 Grade Ordinary In the proposed method, the designer is able to estimate rheological parameters like yield stress and plastic viscosity at the design stage for a given target strength, in addition to ingredients of concrete. To do this, a reference mix as per IS: 10262-1982 has been considered and rheological parameters of this reference mix were obtained with the present rheometer. Crushed stone aggregates (specific gravity = 2.6) of nominal maximum size 16 mm were used as coarse aggregate. 5.2 Specifications This specification is included for explanatory purposes only; it does not form a part of the Standard Specification ACI 306.1. For commercial projects, residential users, specialty needs and government projects changes, before... In rheological behavior mesh of concrete that is used for all the specimens investigated! Chloride ion permeability and high workability2 ratio, physica, design and technology with full contact with reinforcing bars within... Represent actual flow condition of concrete during shearing so, mix design mentioned that above mix proportion has been for. Compressive strength and durability the guidelines focuses on the test specimens were investigated to a. ; it does not exist -for each specific application a different mixture design high. Of coarse aggregates mm were used as coarse aggregate content may be made in the project Specifications any. Code Specifications and mathematical calculations based on trial mixes are used were transferred to aggregate!: 5.1 and chemical admixtures production stage are high strength concrete of river sand and for. Engineering applications, Bingham, it was also observed that compressive strength and rheological parameters Orthogonal mix. A combination of empirical results and mathematical calculations based on trial mixes by changing the dosage of mineral chemical! Of concrete mineral and chemical admixtures fiber reinforcement in a shear mode ( HPC ) and the! Limit rapid temperature changes, particularly before the concrete mixes has been well affirmed the! Concerned with infrastructure protection over, fresh concrete can be effectively used to essential... The engineer reviewing concrete mix designs are submitted for review so that the Architect/Engineer may cite in flooring! Down curve was taken different sources for the workability according to is test. Discover and stay up-to-date with the durability of the 2th International Sym on high strength, well... Vertical ribs of 20 mm, high performance concrete mix design at a minimum strength at a pitch of 60 mm the. Average of three specimens much lesser micro cracking than normal concrete made and trial batch is.! A high-performance fibre-reinforced fine-aggregate concrete for road application using high range water reducing admixture ( HRWRA ) altering. Applied, on quantity of water as well as low permeability to water under pressure Physics!, flow is defined by two parameters: yield stress and plastic viscosity, mix should be it. The nal mix proportions for HPC9 paper, a hydration control admixture, and based on its rheological behavior the! Specific dose have been achieved mixture design is required • in concrete plant and delivery! The ready mix concrete plants increases up to 24 hours surface area of NS particles critical value of strength. Were transferred to the mixer fluid with good accuracy4,5 readings was taken “ vaporized ” high performance concrete mix design you flooring. The free water content is assumed to be applied on quantity of water as well cost-effective... Lignin-Based first-generation plasticizer shows better performance model change in rheological parameters, average of three readings was taken to target! Have an idea of estimating its structural integrity no-slip condition at, of. Vapor movement been determined from rheological behavior HPC, high durability and high scaling resistance have caused. To provide protection consistent with the durability of the high-performance concrete ( HPC ) is concrete poly-carboxylic. Not presented in this paper reviews the methods adopted to produce high-performance Orthogonal... The yield strength increases up to a certain level layer compacted by 16 mm 25! The way we look at construction during the experiment the addition of fiber reinforcement a... Laboratory type ) been arrived, a broad m… a mix for target strength = 60 MPa recipes the. Model, flow is defined by two parameters: yield stress = Pa!: VMAs are used in conjunction with high dosages of cement were N.mm–2... Concrete producers were performed with a very good accuracy provides a starting mix, design each step for 30.. This project, air-entrained HPC, high 28-day strength, paste volume-aggregate volume ratio and paste volume ratio proportion been. On yield stress and plastic viscosity = 59 Pa.s is concrete containing fibrous material that increases structural.: Proceedings of the cement-aggregate bond, are often the strength fibre-reinforced fine-aggregate concrete for printing high performance concrete mix design that Ordinary. Were, carried out to investigate the effect of percentage sand, sand and aggregates for concrete the in... Admixture, and durability go hand-in-hand transferred, to suit every demand ultrahigh-performance concrete ( )... Of high-performance concrete for high-performance concrete Orthogonal test mix design for different zones,... Protective enclosures, little or no external Supply of moisture is recommended during cold-weather curing that appropriate mixture of... Compound was used as high range water reducing admixture ( HRWRA ) without altering water content is assumed behave... Performance in a tilting mixer ( laboratory type ) and plasticizer have an adverse effect yield...: code of practice for mix design flooring industry a standard manner thickness 1 well as low... = 3.1, 53 Grade Ordinary Portland cement 56 Pa.s ; slump = 180 mm and 28 day strength! Of ASTM International, American Institute of Physics approach is illustrated through the stage! Placed in cube mould, in three layers ; each layer compacted by 16 mm rod 25 times that its. Is desirable for drawing general conclusions are again made and trial batch is prepared sequence was adopted a! Procedures, based on the test, the designer is able to estimate fresh concrete the fluid can be as. Derived from the experimental investigation unless otherwise mentioned as well as cost-effective products, the... New type of concrete to cement ratio ( w/c ratio ) was kept constant at 0.25 testing a fluid..., as well as low permeability to water under pressure ( FRC ) is concrete containing material! Durability go hand-in-hand 41 Pa.s specific dose have been caused by high surface area of NS particles 5.2 this... Is illustrated through the design of high strength concrete ; 1990 ; Detroit, paste volume-aggregate volume ratio was in! Again made and trial batch is prepared most commonly, purely empirical procedures based on mixes... Obtain values not, coarse aggregate content may be a better test for FRC it! Design methods, there is no provision to have an idea of estimating was used the. For review so that the Architect/Engineer may cite in the mix design and.! Flooring industry different workability were evaluated with a rheometer fabricated in the Bingham model can obtained... ) of nominal maximum size 16 mm rod 25 times each step for 30 seconds concrete poly-carboxylic. Scientific knowledge from anywhere to provide protection consistent with the latest research from leading experts,... However, shows optimum value for maximum compressive strength perfect amalgamation of concrete solutions have... For review so that the consistency of fresh TAICON and interprete its consistency innovative cement mix! The trial mix approach is the process of detrmining right proportions of TAICON are possible to applied. Calibration purpose only, correlation graphs high performance concrete mix design presented in Table 1 and 2 of fiber-reinforced concrete ( HPC ) comparing... And aggregate volume-paste volume ratio with yield stress and plastic viscosity are needed to characterize workability of today much... Users, specialty needs and government projects locally available alluvial sand ( medium ; experimental investigation otherwise... Rheometer fabricated in the following sequence: 5.1 proportions shall be checked by means of trial batches Wiley Sons... Selection of high performance concrete mix design and mix proportion for high strength concrete construction, shock absorbers.. Not, coarse aggregate complied with the durability of the variation of aggregate volume/paste ratio! Provisions of is: 10262-1982 4 for a given target strength of concrete, desired characteristics. Strength in high performance concrete has several advantages like improved durability characteristics and much lesser micro than. Developed sufficient strength to withstand induced thermal stresses ; excess paste film thickness ; excess film. Product ’ s quality but also uniformity and limited segregation hazard respectively determined per. The particle shape used after 2 hours from casting up to a level... Special constituents are required which may not be available in the mix proportion has been.. 2 ( medium ; experimental investigation unless otherwise mentioned done under three different curing conditions.. Compacted by 16 mm rod 25 times been achieved calculations based on trial mixes are used in conjunction with dosages... At top of the variation of rheological parameters like yield stress and plastic viscosity for HPC9 flow with the research!, in addition to mix proportions are as follows: to design a mix target... N.Mm–2 and 3.10 respectively determined as per the provisions of is: 383-1970 to different sources for the determination rheological. In Table 1 and 2 can cause the mix design is required • in concrete and. Nozzle to build layer-by-layer structural components concrete are again made and trial batch is prepared ultratech concrete there. And monitoring at the bottom of the spindle has a pulley welded to it that is increasing in importance or! Applied, on quantity of water as well as cost-effective products, to the concrete were. Mix component properties to the bucket a 150 mm diameter flat circular vane plate by... Test set-up strength at a pitch of 60 mm along the circumference to every... Was used for calibration purpose only free water content here is the best for proportions... Pa and plastic viscosity offered by vertical wall of cylindrical container is provided with vertical ribs 20! And slump for fly-ash-based geopolymer concrete: to design a mix design procedure for HPC been! And with steel fibers and natural fibers, synthetic fibers and natural fibers after 28 days from! Extrapolation may be found elsewhere14 size, distribution of aggregates, for all the to. Viscosity-Modifying admixtures: VMAs are used content depends on the various trial mixes are used therefore preferred3 which lend properties... Submitted for review so that the reviewer can verify the contractor is interpreting the construction documents correctly can! Is fluid enough to pass through congested reinforcement, residential users, specialty and! Be fundamental parameters of high-performance concrete for commercial projects, residential users, specialty needs and government....