Maximum value of compacting factor for fresh green concrete

MJ Series Jaw Crusher

MJ Series Jaw Crusher

MJ series jaw crusher is mainly used as a coarse crushing crusher. Its purpose is to crush rocks into smaller particle sizes for subsequent processing…

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MC Series Single-Cylinder Hydraulic Cone Crusher

MC Series Single-Cylinder Hydraulic Cone Crusher

MC series single cylinder hydraulic cone crusher is used in secondary and fine crushing operations. It is widely used in metallurgy, construction, highway,…

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ML Series Vertical Shaft Impact Crusher

ML Series Vertical Shaft Impact Crusher

Vertical shaft impact crusher is often used in the final crushing circuit. Due to the ability to produce fine-grained final products, ML series vertical…

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MD Series Multi-Cylinder Hydraulic Cone Crusher

MD Series Multi-Cylinder Hydraulic Cone Crusher

MD series multi-cylinder hydraulic cone crusher is used in the second and third stages of mineral processing and stone crushing, as well as the superfine…

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MF Series Fixed Shaft Circular Vibrating Screen

MF Series Fixed Shaft Circular Vibrating Screen

In order to eliminate the phenomenon of unbalanced vibration, unstable amplitude, on/off bounce, poor screening effect, and cracking of the screen box…

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MGD Series Vibrating Feeder

MGD Series Vibrating Feeder

MGD series vibrating feeder is designed for ultra-heavy working conditions and is suitable for feeding materials to primary jaw crushers, primary impact…

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MGB series hopper discharge feeder

MGB series hopper discharge feeder

MGB series hopper discharge feeder is mainly used for the uniform, quantitative and automatic control of under-silo feeding of bulk materials.…

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MZA/K Series Circular Vibrating Screen

MZA/K Series Circular Vibrating Screen

MZA/K series circular vibrating screen produced by Meilan has an axis-eccentric circular vibrating screen, which can be used for dry and wet classification…

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  • OBORTS Company, Opposite the residence of old General Mambou, Near Dragage, Bastos, Yaoundé, Cameroon
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  • Properties of steel fibrous concrete containing mixed

    May 01, 2008· Results of the tests such as compaction factor, inverted slump cone time and Vebe time conducted on plain and fibre reinforced concrete containing different fibre volume fractions, i.e., 1.0%, 1.5% and 2.0%, each volume fraction containing fibres of mixed aspect ratio, are presented in Table 3.

  • The Strength of Chapter Concrete 3 - iccsafe

    Strength is usually determined by means of test cylinders made of fresh concrete on the job and tested in compression at various ages. The requirement is a certain strength at an age of 28 days or such earlier age as the concrete is to receive its full service load or maximum stress. Additional tests are frequently TABLE 3.1 STRENGTH REQUIREMENTS

  • GATE Civil Engineering Online Practice Test Paper 2 - Q 15733

    Maximum possible value of Compacting Factor for fresh (green) concrete is: A. 0.5 : B. 1.0 : C. 1.5 : D. 2.0 : Answer & Explanation. Answer: Option B . Explanation:

  • Top 16 Mistakes People Make When Installing Concrete

    Concrete installation is not nearly as straightforward as it seems. There is a wealth of preparation that occurs before a single drop of concrete is ever poured onto the site. Everything from the mix design, quantity of concrete to purchase, site preparation, tools, weather forecast, placement process, form removal and curing process need to be … Continue reading "Top 16 Mistakes People Make

  • (PDF) A Review on Self Compacting Concrete

    The fresh concrete tests are done for self-compacting concrete to know the flow and workability of the concrete. Results are acquired by the tests like flexural quality and split tensile quality

  • self compacting concrete - SlideShare

    Feb 27, 2014· IS 456-2000 Code of practice for plain and reinforced concrete (3rd 6. 16. IS 516-1959 Method of test for strength of concrete 7. SK Singh “Self Compacting Concrete - A Paradigm Shift”, Journal of New Building Materials & Construction World, Vol. 15, No. 3, pp 164-180,September , 2009. Concrete‟, Concrete revision)

  • What is the maximum possible value of compacting factor

    Compaction factor is the ratio of the weight of fresh, partially compacted concrete/ to fully compacted concrete. Theoretically the maximum value is 1.0, if the fresh concrete has achieved maximum compaction. Realistically, a value close to 1.0, like.95 or.98 is more likely. 7.8K views

  • Study of Mix Design of Self Compacting Concrete

    concrete to the green and high performance, and it is a revolution of the concrete industry. Therefore, to explore the workability of self compacting concrete has important significance. This paper intends to give brief reviews and comments on the academic influence of main views of self-compacting concrete factors of workability. For the

  • Self Compacting Concrete

    Current research shows that SCC produced with low powder content and VMA had similar fresh concrete properties as SCC with high powder contents produced without VMA 21. VMAs have been in use for a long time 22. They were mainly used for underwater concreting in the past, but are now also used in self-compacting concrete.

  • Indian Concrete Journal

    In the present study an attempt is made to study the behavior of steel fiber reinforced self-compacting concrete under shear by using recycled concrete aggregates as coarse and fine aggregates. The experimental programme consisted of 32 beams of which 16 beams each were cast with natural and 100 % recycled aggregate.

  • Fresh Concrete: Workability

    Compacting Factor Test It is more precise and sensitive than the slump test and is particularly useful for concrete mixes of very low workability as are normally used when concrete is to be compacted by vibration. The compacting factor test has been developed at the Road Research Laboratory U.K.

  • High Performance Concrete & Self-Compacting Concrete

    Sep 16, 2013· High strength concrete (HSC) might be regarded as concrete with a strength in excess of 60MPa and such concrete can be produced as relatively normal concrete with a higher cement content and a normal water-reducing admixture.

  • Workability of Fresh Concrete by Slump Test

    But in case of a wet concrete, the slump may vary from 150-175 mm or say 6-7 inches. So the value of slump is specifically mentioned along the mix design and thus it should be checked as per your location. Slump depends on many factors like properties of concrete ingredients – aggregates etc. Also temperature has its effect on slump value.

  • Maximum possible value of Compacting Factor for fresh (green)

    Maximum possible value of Compacting Factor for fresh (green) concrete is: Download App. Academic Resource. Aptitude Data Interpretation Verbal Reasoning Non Verbal Maximum possible value of Compacting Factor for fresh (green) concrete is: 0.5 ; 1.0 ; 1.5 ; 2.0; Correct Option: A. 0.5.

  • :: Pervious Pavement :: Pervious Concrete for Green

    Placing the pervious concrete over a 6-inch (150-mm) layer of 1-inch (25-mm) maximum top size aggregate provides a pavement base, stormwater storage, and isolation for the pervious concrete. Unless these precautions are taken in aggressive environments, recommendations from ACI 201 on water-to-cement ratio and material types/proportions should

  • Illustration of Mix Design of Concrete by ISI Method

    For change in values in water-cement ratio, compacting factor and sand belonging to Zone II, the following adjustment is required as given in Table 3 Therefore, required sand content as percentage of total aggregate by absolute volume =25-1=24 percent. Required water content = 180 + 180 x 3/100=185.40 liters/m 3 Determination of cement content:-

  • (PDF) SELF COMPACTING CONCRETE FOR SLIP FORM PAVING

    Slump, spread, green strength and compaction factor were evaluated for all the 9 mixes. Compaction factor value is more than 0.98 for the fresh concrete …

  • WORKABILITY OF FRESH CONCRETE BY COMPACTION FACTOR

    2. COMPACTION FACTOR TEST The principle of compacting factor is determining the degree of compaction achieved by concrete for a standard amount of work done by allowing the concrete to fall through a standard height. The compacting factor gives the behavior of fresh concrete under the action of external forces.

  • Behaviour of Self-Compacting Concrete at Various Levels of

    Water absorption of PQSCC20 was found to be less than limiting value (0.5). Keywords: self-compacting concrete, fly ash, pond ash, quarry dust, admixture, etc 1. Introduction Self-compacting concrete (SCC) Self-compacting concrete (SCC) does not require vibration and compaction while placing of concrete. SCC was first

  • What Is Workability of Concrete Factors Affecting

    #2. Competing Factor Test for Workability of Concrete-The compacting factor test gives the behavior of fresh concrete under the action of external forces. It measures the compatibility of concrete that is an important aspect of workability, by measuring the total amount of compaction …

  • Compaction of Concrete- Methods and Results of Poor

    Compaction of Concrete is an operation in which fresh concrete is compacted in forms and make it encircle reinforcements and other embedded objects such as tubes in the mold. There are various problems that might arise if compaction of concrete is not carried out properly such as honeycomb and trapped inside concrete paste.

  • Use of recycled plastic in self-compacting concrete: A

    Jul 01, 2020· Fresh properties of self-compacting concrete with plastic waste as partial replacement of sand Int. J. Sustain. Built Environ. , 6 ( 2 ) ( 2017 ) , pp. 299 - 308 , 10.1016/j.ijsbe.2017.01.001

  • Compaction of Concrete - Boral

    Page 3 of 7 > compaction of concrete Table 1 Characteristics and applications of immersion vibrators Diameter Recommended Average Radius of Rate of concrete of head 2frequency1 3,5amplitude action placement 4,5 (mm) (Hz) (mm) (mm) (m3/h per vibrator) Application 20–40 150–250 0.4–0.8 75–150 1–4 High slump concrete in very thin

  • Compaction Factor Test - Workability Test Of Fresh Concrete

    The compaction factor test is carried out to measure the degree of workability of fresh concrete with regard to the internal energy required for compacting the concrete thoroughly. Apparatus: 1. Compaction Factor Machine, 2. Weighing Machine, 3. Steel Trowel Or Mechanical Vibrator.

  • IS 1199 (1959): Methods of sampling and analysis of concrete

    amount of useful internal work necessary to produce complete compaction. 3. SAMPLING OF FRESH CONCRETE IN THE PIELD 3.1 This method specifies the procedure to be followed in field for obtaining representative samples of fresh concrete directly Coti the mixer or from concrete at …

  • Properties of Hardened Concrete; A Detailed Guide.

    The voids left in the concrete on compaction and curing have a profound influence on the strength of the concrete. Tensile Strength: Plain concrete (without steel reinforcement) is quite weak in tensile strength which may vary from 1/8th to 1/20th of the ultimate compressive strength.

  • Development of Heavyweight Self-Compacting Concrete and

    Mar 28, 2019· Admixtures can be used to improve and manipulate the fresh properties of a concrete mix to better suit the concrete for a specific use [46,47]. The addition of superplasticizers can see the early strength of concrete increase by 50% to 75% and an increase in workability on the fresh properties of concrete .

  • Compaction Factor Test for Concrete Workability - Method

    Calculation of Compaction Factor Value The compaction factor is defined as the ratio of the weight of partially compacted concrete to the weight of fully compacted concrete. It shall normally to be stated to the nearest second decimal place. Compaction Factor Value= (W1-W) / (W2-W) Result of Compaction Factor

  • COMPRESSIVE STRENGTH OF CONCRETE - HARDENED …

    Only 5% results is expected to fall below “ fck” when value of “k” used in design is 1.65 Only 1% results is expected to fall below “fck” whe n value of “k” used in design is 2.33 “f ck actual” can be calculated when 30 or more results are available through Mean Value – 1.65X k or Mean Value – 2.33 X k

  • Concrete Slump and Compacting Factor Test Values and Uses

    Feb 15, 2016· The range of results of each these tests indicates the suitable uses of concrete work. The slump and compacting factor test values shown below are of concretes with 20mm or 40mm maximum size of aggregates. Roads vibrated by power-operated machines. At the more workable end of this group, concrete may be compacted in certain cases with hand

  • Tech Net Edge - Best Civil Engineering Blog: [PDF]Download

    Aug 16, 2020· Aggregate abrasion value ; Aggregate impact value ; Aggregate crushing value; 3. Tests on Fresh Concrete. Workability; Slump; Compacting factor ; Vee-Bee ; 4. Tests on Hardened Concrete. Non-destructive tests ; Rebound hammer ; Ultrasonic pulse velocity ; Compression test; 5. Tests on Soil. Water content ; Oven drying method ; Calcium carbide

  • - SELF-COMPACTING CONCRETE - PRESSURE ON …

    1.2 density of concrete 1.3 type of compaction 1.4 type of vibration/ depth of vibration 1.5 consistency of concrete 1.6 temperate of the fresh concrete 2.1 time of solidification 2.2 cement-additives 2.3 pore water pressure 2.4 time of vibration 2.5 design of the formwork 2.6 …

  • IS 5515 (1983): Specification compacting factor apparatus

    Feb 28, 1983· value &o&d he the same as that of the specSed value in this standard. 1. SCOPE 1.1 This standard covers requirements of the apparatus and accessories Tssed for determining the compacting factor of fresh concrete with nominal maximum aggregate size not exceeding 40 mm, as a measure of its workability. 2.

  • compaction factor of fresh green concrete

    compaction factor value of quarry dust Solution for ore , Oct 17, 2012· Figureure 1: Variation of slump value of fresh concrete with quarry dust content 312 Compaction factor The variation of workability is measured in terms of compaction , Strength and durability properties of concrete containing quarry , highest slumps and compaction factor were recorded for the mixes designed by British

  • 5 Tests to Measure the Workability of Concrete!

    Aug 09, 2019· Slump Test. Compacting Factor Test. Flow Test. Vee-Bee Consistometer Test. Kelly Ball Test. 01. Slump Test. The concrete slump test or slump cone test is the most common test for workability of freshly mixed concrete which can be performed either at the working site/field or in the laboratory. To maintain the workability and quality of fresh

  • Fresh and Mechanical Properties of Self-Compacting Rubber

    Feb 24, 2019· Based on the EFNARC , self-compacting effect of concrete can be realized that partially depends on the segregation ratio of fresh concrete (≤20%). Thus, in order to make sure the rubber lightweight aggregate concrete can compact by itself, the plastic viscosity of corresponding mortar pastes must be greater than 3.72 Pa·s.

  • Maximum possible value of Compacting F actor for fresh

    Jul 06, 2017· The maximum possible value of Compacting factor for fresh (green) concrete is considered to be 1 theoretically, but lets look into it in a pragmatic way: CF = wt. of partially compacted concrete/ wt. of fully compacted concrete

  • Fresh concrete properties & its standard tests

    Dec 22, 2011· Slump Test >Table : Workability, Slump and Compacting Factor of concrete with 19 or 38 mm (3/4 or 1 1 / 2 in) maximum size of aggregate. Degree of workability Slump (mm) Compacting Factor Use for which concrete is suitable Very low 0 - 25 0.78 Very dry mixes; used in road making.

  • Workability of Concrete by Compaction factor Test

    1. objective. The compacting factor test is designed primarily for use in the laboratory but it can also be used in the field. It is more precise and sensitive than the slump test and is particularly useful for concrete mixes of very low workability and normally used when concrete …