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What conclusions we can get from slump test? What are the limitations of Slump test?

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Question ajoutée par SREEJITH KUNNATHULLY , Sr. Landscape Engineer , Arcadis
Date de publication: 2016/08/02
zakaria karime
par zakaria karime , civil project engineer , Federici Stirling Batco

The slump test measures the resulting behavior of a compacted inverted cone of concrete under the action of gravity. It indicates consistency or wetness of concrete , for the Limitations there is not direct relationship between workability and the value of slump and it is not suitable for concrete in which maximum size of aggregate exceeds 40 mm , and it is working only in plastic mixes, it will not occur in case of dry mixes.

Imtiaz Ur Rehman
par Imtiaz Ur Rehman , Quality Engineer-1 , Public Works Authority (Ashghal)

The slump test measures the consistency of the concrete and indicates about the variation in the ingredients. 

Slump test limitations could vary from zero slump to free flowing depending on the mix design and intended use of the concrete.

SIMON JOSEPH XAVIER RAJ
par SIMON JOSEPH XAVIER RAJ , Project Engineer , ABB Global Industries and Services Pvt. Limited

Workability of concrete is the result for Slump test. Slump value for various concrete activities are follows:1. Concrete for road construction = 20 to 40 mm  2. Concrete for tops of curbs, parapets, piers, slabs and wall = 40 to 50 mm 3. Concrete for canal lining = 70 to 80 mm 4. Normal RCC work = 80 to 150 mm 5. Mass concrete = 20 to 50 mm 6. Concrete to be vibrated = 10 to 25 mm

Mohammad Alim
par Mohammad Alim , Senior Civil & Structural Engineer (Deputy Manager) , Dangote Oil Refining Company -Dangote Industries Limited

Slump is a measurement of concrete's workability

Sattar Abdulkarim  Mohamed
par Sattar Abdulkarim Mohamed , Country Sales Director , Ideal Technical Solutions

Thank you for your question. It is  related to the Concrete material/ out of my specialty.

Muthazhagan Santhosh
par Muthazhagan Santhosh ,  Project , Bubble brook

slump test to be used for inshort

 

Kamalakannan Rajendran
par Kamalakannan Rajendran , Site Engineer , GHANTOOT TRANSPORT AND GENERAL CONTRACTING LLC

The concrete slump test measures the consistency of fresh concrete before it sets. It is performed to check the workability of freshly made concrete, and therefore the ease with which concrete flows. It can also be used as an indicator of an improperly mixed batch. The test is popular due to the simplicity of apparatus used and simple procedure. The slump test is used to ensure uniformity for different loads of concrete under field conditions.A separate test, known as the flow table, or slump-flow, test, is used for concrete that is too fluid (workable) to be measured using the standard slump test, because the concrete will not retain its shape when the cone is removed.The test is carried out using a metal mould in the shape of a conical frustum known as a slump cone or Abrams cone, that is open at both ends and has attached handles. The tool typically has an internal diameter of 100 millimetres (3.9 in) at the top and of 200 millimetres (7.9 in) at the bottom with a height of 305 millimetres (12.0 in).The cone is placed on a hard non-absorbent surface. This cone is filled with fresh concrete in three stages. Each time, each layer is tamped 25 times with a 2 ft (600 mm)-long bullet-nosed metal rod measuring 

5/8 in (16 mm) in diameter.[2] At the end of the third stage, the concrete is struck off flush with the top of the mould. The mould is carefully lifted vertically upwards, so as not to disturb the concrete cone.

The concrete then slumps (subsides). The slump of the concrete is measured by measuring the distance from the top of the slumped concrete to the level of the top of the slump cone

Utilisateur supprimé
par Utilisateur supprimé

Slump is a measurement of concrete's workability and its mix design the limitations of slump test is between 7 cm min. to 10 cm max

AL AKHLAQUE SAEED
par AL AKHLAQUE SAEED , Software Testing Engineer , CyFuture Pvt Ltd

Concrete slump test measures the consistency of fresh concrete before it adjusts.

MUNAWAR HUSSAIN ZAKI
par MUNAWAR HUSSAIN ZAKI , Site Engineer , S.A ASSOCIATES NIZAMABAD INDIA

to check the water content for its workability

 

Anwar Yasin
par Anwar Yasin , Project Coordinator , Bahria Town

Slump is a measure of Concrete's work-ability.. it's value is measured in inches or centimeters.. most preferred value range is 3-4 inches or 6-9 cms..

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