Contents
- 1 What is the recommended slump for mass concrete?
- 2 What is the slump range for concrete?
- 3 How much slump is required for building work?
- 4 What is a zero slump concrete?
- 5 How is Slump value calculated?
- 6 How much slump is allowed?
- 7 What does zero slump mean in concrete mix?
- 8 What does a collapsed slump in concrete mean?
- 9 When do you use s1 slump in concrete?
What is the recommended slump for mass concrete?
Types of concrete Slump: Concrete for road construction 20 to 40 mm. Concrete for tops of curbs, parapets, piers, slabs and wall 40 to 50 mm. Concrete for canal lining 70 to 80 mm.
What is the slump range for concrete?
Concrete slump values
| Class | Slump range (mm) | Target slump |
|---|---|---|
| S1 | 10-40 | 20 |
| S2 | 50-90 | 70 |
| S3 | 100-150 | 130 |
| Table 1: Slump class from BS8500 |
How much slump is required for building work?
Allowable Slump Values
| WORK | ALLOWABLE RANGE |
|---|---|
| Column | 50 mm to 150 mm |
| Beam | |
| Wall | |
| Mass Concrete | 25 mm to 75 mm |
What is the value of slump mm for roads?
What is the ideal value of slump? Answer 1 In case of a dry sample, slump will be in the range of 25-50 mm that is 1-2 inches. But in case of a wet concrete, the slump may vary from 150-175 mm or say 6-7 inches.
What is the concrete slump recommended for beams and slabs?
The concrete slump recommended for beams and slabs ; is 25 to 50 mm 25.
What is a zero slump concrete?
According to ACI’s Cement and Concrete Terminology (ACI 116R-90), no-slump concrete is freshly mixed concrete exhibiting a slump of less than 1/4 inch. Zero-slump concrete is defined in the same document, as concrete of stiff or extremely dry consistency showing no measurable slump after removal of the slump cone.
How is Slump value calculated?
In case of a shear slump, the slump value is measured as the difference in height between the height of the mould and the average value of the subsidence.
How much slump is allowed?
Very dry mixes having slump 0 – 25 mm are typically used in constructing pavements or roads, low workability mixes having slump 10 – 40 mm are typically used for foundations with light reinforcement, medium workability mixes with slump 50 – 90 mm, are typically used for normal reinforced concrete placed with vibration.
What is a good slump?
Slump. Slump is the measure of concrete consistency and fluidity. It shows the flow and overall workability of freshly mixed concrete. Four-inch (4”) slump is very common with normal weight concrete and is a good for pumping.
What are the recommended values of concrete slump tests for various?
Register now or log in to answer. Concrete for Roads 20 – 40 mm, Tops of Curbs, Parapet, Piers, Slabs and Walls 40 – 50 mm, Canal Lining 70 – 80 mm, Normal RCC 80 – 150 mm, Mass Concrete 20 – 50 mm In case of a dry sample, slump will be in the range of 25-50 mm. But in case of a wet concrete, the slump may vary from 150-175 mm.
What does zero slump mean in concrete mix?
Zero Slump – Zero slump is the indication of very low water-cement ratio, which results in dry mixes. These type of concrete is generally used for road construction. These type of concrete is generally used for road construction.
What does a collapsed slump in concrete mean?
Collapsed Slump – This is an indication that the water-cement ratio is too high, i.e. concrete mix is too wet or it is a high workability mix, for which a slump test is not appropriate. Shear Slump – The shear slump indicates that the result is incomplete, and concrete to be retested. What Is Workability of Concrete?
When do you use s1 slump in concrete?
Following the adoption of the new European Standard for Concrete in 2003 (BS8500), consistence (workability or slump) is now specified as being of a particular class. There are five classes with each class spanning a range of slump values. S1 slumps are most likely to be used for kerb and pipework bedding because it’s quite a dry concrete mix.