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if the slump of concrete mix is 75 mm its workability is

if the slump of concrete mix is 75 mm its workability is

If the slump of concrete mix, is 75 mm, its workability is ...

The Questions and Answers of If the slump of concrete mix, is 75 mm, its workability is considered to bea)very highb)highc)mediumd)low.Correct answer is option 'C'. Can you explain this answer? are solved by group of students and teacher of Civil Engineering (CE), which is also the largest student community of Civil Engineering (CE).

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If the slump of concrete mix is 75 mm its workability is considered to be (a) very high (b) high (c) medium (d) low (e) very low The slump test of concrete is used to measure its (a) compaction under gravitational force (b) mobility (c) consistency (d) homogeneity (e) All of the above For an RCC slab the slump of concrete should be (a) 0—25 ...

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If the slump of a concrete mix is 60 mm, its workability is

Collapse slump: In this case, fresh concrete collapses completely. The mix is too wet or high workability mix, slump test isn’t appropriate for such mix. Shear Slump: If one-half of the cone slides down in an inclined plane, it is called a shear slump. It is an indication of the lack of cohesion of the mix.

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Guide To Concrete Workability Concrete Slump Concrete2you

Concrete workability. One of the basic attributes of any concrete is its workability or "consistence", that is, how easy it is to push one way, pull the other, and float to a smooth level surface. Workability is largely determined by how fluid the concrete is. This is referred to as "Slump". Essentially, the more fluid the concrete, the higher ...

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Concrete Mix Ratio And Slump Value Of Concrete ...

Nov 20, 2020  A properly designed mixture possesses the desired workability for the fresh concrete and the required durability and strength for the hardened concrete. Typically, a mix is about 10 to 15 % cement, 60 to 75 % aggregate and 15 to 20 % water. This concrete mix ratio of aggregate to sand to cement is an important factor in determining the ...

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Concrete Slump Test for Workability – Types of Slumps ...

Aug 03, 2020  If the distance is said 75 mm, the concrete slump will be 75 mm. accuracy of the measurement should be within 5 mm. Acceptance Criteria for Slump Test in Ready Mixed Concrete Before unloading the entire load, it is the essential that slump test is taken from the concrete

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How to Determine the Workability of Concrete ? Concrete ...

This test is suitable for concrete having 25 to 125 mm of slump i.e. for medium to high workability. For example a harsh mix cannot be said to have the same workability as one with a large proportion of sand even though they have the same slump. Similarly 12.5 mm slump in concrete made with 75 mm maximum size crushed aggregate will not ...

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civil engineering mcqs with answers - concrete technology

0.75: C. 0.85: D. 0.95 View Answer Workspace Report ... If the slump of concrete mix is 70 mm, its workability is considered to be: A. very low: B. ... View Answer Workspace Report Discuss in Forum. 189. A compaction factor of 0.88 indictes that the workability of concrete mix is: A. very low: B. low: C. medium: D. high View Answer ...

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Concrete Workability Fibo Intercon Batching Plant

This is the reason why concrete should be designed with the correct workability or slump. Slump is categorised in the concrete standard NS 8500 EN 165 as follows: s1 – 10 to 40 mm; s2 – 50 to 90 mm; s3 – 100 to 150 mm; s4 – 160 to 210mm; Concrete Additives. Additives can be added to a concrete mix to increase its workability/slump while ...

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Mix Design Of Concrete Concrete Mix Design M 25 Mix ...

In this trial Mix, Slump value for mix = 60 mm; Compaction Factor for mix = 0.852; So, from the results of the slump of Mix, the concrete is workable and had a true slump of about 60 mm. Required slump = 50-75 mm; So, it satisfied the desired workability by satisfying the requirement of 50-75 mm slump value. Now, we have to go for trial mix-3

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Concrete slump test - Wikipedia

The slump test is suitable for slumps of medium to low workability, slump in the range of 5 – 260 mm, the test fails to determine the difference in workability in stiff mixes which have zero slump, or for wet mixes that give a collapse slump. It is limited to concrete formed of aggregates of less than 38 mm

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Concrete Slump Classes - Slump Test For Concrete Workability

Jan 10, 2021  The concrete slump test is a simple and easy test that measures the consistency of concrete before it sets. It is useful to check concrete mix batches on site before pouring concrete. In the United Kingdom, the slump test is measured in accordance with BS EN 12350-2. The flow is measured in accordance with BS EN 12350-5.

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Slump Testing of Concrete – To Check Workability of ...

Feb 17, 2019  Note: FA = Fine Aggregates, and CA = Coarse Aaggregates. Theory. Concrete slump test, which gives a measure of the workability of the mix in terms of a slump. The slump is observed after the subsidence of a concrete mix. The theory of the slump test is described below. One can get a fairly good idea of cohesiveness by gently tapping the platform on which cone stands.

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Concrete Technology MCQ - Part 1

An aggregate is known as cyclopean aggregate if its size is more than. a. 475 mm b. 30 mm c. 60 mm d. 75 mm. Answer => D. 57. If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than. a. 205 mm b. 305 mm c. 405 mm d. 505 mm ...

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What is the slump value for mass concrete work? - Quora

Slump values for concrete vary dependant upon the application the concrete is being poured for. Any mixed concrete less than about 60 slump will not pour well from a delivery truck and will probably need to be tamped into place onsite. 80 slump co...

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Concrete Mix Design M30 Grade with Flyash as Partial ...

Workability: Placing condition of concrete governs its workability, low – slump of 25-75 mm (lightly reinforced sections in slab, beam, column) to high – slump of 100-150 mm (slip form, pumped concrete) . Illustrated example of M30 Grade Fly Ash concrete, concrete

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Concrete SLUMP TEST Procedure and its applications

Mar 24, 2020  4. Kelly ball test. 5. Vee-Bee consistometer test. 6. K-Slump Test. We usually perform Slump test on site and lab due its ease and results. It gives quick result about the workability of concrete. No matter, Slump Test is a leader among the above tests.

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Workability of concrete test, definition, improvement ...

Slump value of concrete is suitable for medium to high workability having slump value 25 mm to 125 mm and we consider two sample dry case and wet case, ideal value of slump will be 25-50 mm (1-2 inch) in case of dry sample and 150-175 mm (6-7inch) in case of wet sample.

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Concrete mix design « Civil Construction

May 25, 2020  Concrete mix : Concrete mix is the heterogeneous mixture consisting of coarse aggregate, fine aggregate, cement and water as the main ingredients. Grade of concrete is the designation of the concrete mix which is indicated according to its cube compressive strength at 28 days. Concrete mix is categories into two types: nominal mix and design mix.

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civil engineering mcqs with answers - concrete technology

0.75: C. 0.85: D. 0.95 View Answer Workspace Report ... If the slump of concrete mix is 70 mm, its workability is considered to be: A. very low: B. ... View Answer Workspace Report Discuss in Forum. 189. A compaction factor of 0.88 indictes that the workability of concrete mix is: A. very low: B. low: C. medium: D. high View Answer ...

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MCQs of Fresh Concrete (Concrete Technology - 3150610 ...

MCQs of. Fresh Concrete. 1. if the slump of concrete mix is 60mm, its workability is. 2. if the compacting factor of concrete mix is 0.92, its workability is. 3. workability of concrete mix having very low water cement ratio should be ascertained by. 4.

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What is the slump in concrete concrete slump test ...

High workability:- their slump value is 100 -175 mm. Concrete slump limit and their uses. Concrete slump limit is identified the low workability to high workability, in case of dry sample can be performed very low workability having slump range 0-25 mm (0-1 inch) are typically used in pavements or roads. Low workability having slump range 25-50 ...

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Mix Design Of Concrete Concrete Mix Design M 25 Mix ...

In this trial Mix, Slump value for mix = 60 mm; Compaction Factor for mix = 0.852; So, from the results of the slump of Mix, the concrete is workable and had a true slump of about 60 mm. Required slump = 50-75 mm; So, it satisfied the desired workability by satisfying the requirement of 50-75 mm slump value. Now, we have to go for trial mix-3

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3 METHODS OF DETERMINING WORKABILITY OF CONCRETE ...

Oct 29, 2015  Not suitable for concrete containing aggregates larger than 40 mm. Not suitable for concrete of dry mix. Not suitable for very wet concrete. Not reliable because slump may be of any shape. 2. Compaction Factor Test. According to this test, the workability may be defined as the amount of applied work required to compact the concrete to its ...

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Quality tests to be done on concrete - Slump Test ...

May 25, 2020  Each layer shall be tamped with twenty-five strokes of the rounded end of the tamping rod. The cone is removed gently and the decrease in the height of concrete is the slump of concrete. The slump tolerance shall be +/- 25 mm . If a design mix recommends a slump of 100 mm it cant go beyond 125 mm and go below 75 mm.

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What is a concrete slump, and how is it measured? - Quora

Jul 04, 2021  Concrete slump is the measurement technique of concrete workability and an indirect measurement of concrete consistency. The test apparatus is a slump cone. The principle of the slump test result is a measure of the behavior of a compacted inverte...

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WORKABILITY OF FRESHLY MIXED CONCRETE BY SLUMP TEST ...

Jan 10, 2020  To determine the workability of fresh concrete of given proportions by slump test where the nominal. ... plasticizers to increase the slump of the concrete mix. ... This difference in height in mm is the slump of the concrete. Note: the nominal maximum size of aggregate does not exceed 38mm.

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Concrete Workability in GCC Region - The Need for Change.

Nov 07, 2016  The use of higher slump range of (150±40 mm) or (200±40 mm) becomes a necessity in the nowadays and future concrete in GCC due to its economic, technical and environmental advantages.

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Concrete mix design « Civil Construction

May 25, 2020  Concrete mix : Concrete mix is the heterogeneous mixture consisting of coarse aggregate, fine aggregate, cement and water as the main ingredients. Grade of concrete is the designation of the concrete mix which is indicated according to its cube compressive strength at 28 days. Concrete mix is categories into two types: nominal mix and design mix.

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Consistency And Workability HEICO

Consistency and Workability Slump Test Apparatus IS : 7320-1974 HC 37.60 Used for determination of slump of fresh concrete mix as a measure of its consistency where the nominal size of aggregate does not exceed 38 mm. It comprises the following :- A slump cone 100 mm dia at the top, 200 mm

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Design mix of high strength concrete of M70 as latest IS ...

Mar 30, 2020  As per clause number 6.2.4 , page no 8 of IS 10262: 2019 , For the desired workability other than 50 mm slump , the required water content may be increased or decreased by about 3 percent for each increase or decrease of 25 mm slump.

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Mix Design for Pumpable Concrete Materials Concrete ...

Design a mix for pumpable concrete from the following data: 1. The max. size of coarse aggregate = 20 mm. 2. The fine aggregate passes through the 300 micron or 0.3 mm = 19% . 3. Slump of concrete = 75 to 100 mm . Procedure: The proportions for 75-100 mm slump will be taken as given in table 20.52. From the table 20.52, Water = 190 kg or litres

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Slump Loss - an overview ScienceDirect Topics

R. Flatt, I. Schober, in Understanding the Rheology of Concrete, 2012 7.5.2 Dosage impact on slump life. Fresh concrete is well known to lose its workability with time. This phenomenon is called ‘ slump loss ’. To improve slump retention with PNS or PMS, of which the action is often limited in time, addition of set-retarding water reducers, typically lignosulfonates, was found to be quite ...

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