Table of Contents
- 1 Which code is used for concrete mix design?
- 2 What are the requirements of concrete mix design as per BIS?
- 3 Is code for nominal mix of concrete?
- 4 What are the steps involve in the mix design using BIS guidelines?
- 5 What is ASTM C138?
- 6 What is concrete mix design procedure and example?
- 7 Do aggregates satisfy ASTM C 33 and AASHTO m 6/m 80 requirements?
Which code is used for concrete mix design?
10262
This is known as Mix Design of Concrete, which follows some certain principles, devised by IS:10262,2009….Concrete Mix Design as per IS Code.
| S.No | Grade | Proportion (cement: sand: coarse aggregate) |
|---|---|---|
| 5 | M20 | 1:1.5:3 |
| 6 | M25 | 1:1:2 |
What are the parameters involved in determining concrete mix design?
The standard ACI mix design procedure can be divided up into 8 basic steps:
- Choice of slump.
- Maximum aggregate size selection.
- Mixing water and air content selection.
- Water-cement ratio.
- Cement content.
- Coarse aggregate content.
- Fine aggregate content.
- Adjustments for aggregate moisture.
What are the requirements of concrete mix design as per BIS?
The various factors affecting the mix design are:
- Compressive strength. It is one of the most important properties of concrete and influences many other describable properties of the hardened concrete.
- Workability.
- Durability.
- Maximum nominal size of aggregate.
- Grading and type of aggregate.
- Quality Control.
What is ASTM c29?
Standard Test Method for Bulk Density (Unit Weight) and Voids in Aggregate. 1.1 This test method covers the determination of bulk density (“unit weight”) of aggregate in a compacted or loose condition, and calculated voids between particles in fine, coarse, or mixed aggregates based on the same determination.
Is code for nominal mix of concrete?
Nominal Mix of Concrete As per the ‘Indian Standard- IS 456:2000’, nominal mix concrete may be used for concrete of M20 grade or lower grade such as M5, M7. 5, M10, M15.
What is the is code for mix design of concrete Mcq?
Explanation: IS 456-2000 has designated the concrete mixes into a number of grades as M10, M15, M20, M25, M30, M35 and M40.
What are the steps involve in the mix design using BIS guidelines?
Concrete Mix Design Made Easy
- Step 1: Slump Flow.
- Step 2: Aggregate Size.
- Step 3: Mixing Water and Air Content.
- Step 4: Concrete Strength and Water/Cement Ratio.
- Step 5: Coarse Aggregate.
- Step 6: Fine Aggregate.
- Step 7: Adjustment for Moisture in Aggregates.
- Step 8: Summary Design.
What is ASTM 33?
ASTM C-33 sand refers to a specific type of sand that meets standards associated with the grading of aggregate materials in the sand. ASTM C33 sand is most often used to make concrete, Portland cement, hot mix asphalt and lime.
What is ASTM C138?
ASTM C138: Unit Weight, Yield, and Gravimetric Air Content of Concrete.
What is concrete mix?
Concrete is a mixture of cement, air, water, sand, and gravel–it’s as simple as that! Not exactly. The typical concrete mix is made up of roughly 10\% cement, 20\% air and water, 30\% sand, and 40\% gravel. This is called the 10-20-30-40 Rule–though proportions may vary depending on the type of cement and other factors.
What is concrete mix design procedure and example?
Concrete Mix Design Procedure and Example IS456. Concrete mix design is the process of finding the proportions of concrete mix in terms of ratios of cement, sand and coarse aggregates. For e.g., a concrete mix of proportions 1:2:4 means that cement, fine and coarse aggregate are in the ratio 1:2:4 or the mix contains one part of cement,…
What does 1 2 4 mean in concrete mix?
For e.g., a concrete mix of proportions 1:2:4 means that cement, fine and coarse aggregate are in the ratio 1:2:4 or the mix contains one part of cement, two parts of fine aggregate and four parts of coarse aggregate. The concrete mix design proportions are either by volume or by mass.
Do aggregates satisfy ASTM C 33 and AASHTO m 6/m 80 requirements?
However, the fact that aggregates satisfy ASTM C 33 or AASHTO M 6/M 80 requirements does not necessarily assure defect-free concrete. For adequate consolidation of concrete, the desirable amount of air, water, cement, and fine aggregate (that is, the mortar fraction) should be about 50\% to 65\% by absolute volume (45\% to 60\% by mass).
What is the ratio of CA and FA in concrete?
Aggregates 60\% to 70\% – Coarse aggregates & Fine aggregates. CA & FA proportion is generally 60:40, Finer the sand its content would be lower, higher in case of coarser fine aggregate. Understanding basic concrete material individually would help us design a value engineered concrete mix design.