What is BIS method of mix design?

What is BIS method of mix design?

The process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design.

What are the advantages of mix design?

Advantages of Mix Design

• Quality concrete means. Better strength.
• Economy.
• Economy in cement consumption. It is possible to save up to 15 \% of cement for M20 grade of concrete with the help of concrete mix design.
• Best use of available materials.
• Other properties.

Which of the following is a disadvantage of mix design?

Disadvantages of Concrete Mix Design: It requires a high initial cost. Also, require skilled labor. Also, requires specific attention.

What are the advantages of mix design concrete?

Advantages of Concrete Mix Design

• Required Proportions of Each ingredient.
• Quality Concrete Mix.
• Economical Concrete Mix.
• Best Use of Locally Available Material.
• Desired Properties of Mix.

Is method of mix design?

The various methods of mix design are applied for determining the qualities & quantity of concrete. The objective of designing a mix is to produce a concrete of required strength, durability and workability as economically as possible.

What is the procedure for mix design?

Background Data of Concrete Ingredients Sieve analyses of fine and coarse aggregates. Specific gravities and absorption of aggregates. Mixing-water requirements of concrete developed from experience with available aggregates. Relationship between strength and water-cement ratio.

What are the different methods of mix design?

The methods are: 1. American Method of Mix Design 2. Graphic Method of Mix Design 3. Mix Design by Indian Standard Method 4.

What are the advantages and disadvantages of ready mixed concrete?

RMC reduces the labour cost and site supervising cost. RMC comes with consistency in quality through accurate & computerized control of sand aggregates and water as per mix designs. Production of RMC helps in minimizing cement wastage due to bulk handling. Production of RMC is relatively pollution free.

What are the disadvantages of ready mix concrete?

Disadvantages of Ready-Mix Concrete

• Requires huge initial investment.
• Not suitable for small projects (less quantity of concrete is required).
• Need an effective transportation system from the batching plant to the job site.

What are the advantages and disadvantages of PSC over RCC?

It requires high strength concrete and high tensile strength steel wires. The main disadvantage is construction requires additional special equipment like jacks, anchorage, etc. It requires highly skilled workers under skilled supervision. Construction cost is little higher than RCC structures.

What is concrete mix design?

Concrete mix design is the process of finding right proportions of cement, sand and aggregates for concrete to achieve target strength in structures. As, the quantity of concrete required for large constructions are huge, economy in quantity of materials such as cement makes the project construction economical.

How to design concrete mix design?

The main aim of the concrete mix design is to find out the desired proportion of each ingredients which are cement, coarse aggregate, fine aggregate, water etc. to obtain the required properties of resulting mix. 2. Quality Concrete Mix Each ingredient used in the concrete mix design is tested for its quality.

What is the difference between ACI method and BS method of mixing?

The fine aggregate content in ACI method appears to be more consistent and it also contributed to the increased strength. T he mixes desi gned by BS method failed to ac hieve the target mean strength. The m ain reason of content. As a result, the quantity of cement content obtained appears to be

How accurate concrete mix design makes concrete construction more economical?

Accurate concrete mix design makes concrete construction more economical. In large constructions such as bridges, dams requires a large amount of concrete, using it in correct amount makes the structure economical.

What are the benefits of mixed methods research?

Let’s start with the benefits of mixed methods research. So, quantitative methods give a reliable, statistically verified result. The quality of work of the researcher in such methods can be easily verified, the research is repeated with obtaining (subject to its qualitative execution) the same result.