Type of concrete mix ratio design and Their strength

Type of concrete mix ratio design and Their strength

Concrete mixing rates are estimates of concrete components such as cement, sand, aggregates and water. These mix dimensions are determined based on the type of building designs and combinations. However, construction codes provide standard and standardized concrete mixing of different construction activities based on experience and testing. These types of concrete mixing standards are discussed in this article.

Types of Mix Ratio Concrete - Mix Designs

Nominal Concrete Mix Ratio

In the past concrete details described concrete scales, solid and solid scales. These composite-cement compounds that ensure sufficient strength are called conventional mixtures. Recreational blends offer simplicity and under normal circumstances, have a higher power than stated. However, due to the variety of concrete-mixed ingredients the specific functionality provided varies greatly in strength. Typical concrete mixing rates are 1: 2: 4 in M15, 1: 1.5: 3 in M20 etc.

Standard Mixes

Typical composites of mixed cement mixture (by volume) vary greatly in intensity and may result in lower or higher concentrations. For this reason, low pressure forces are included in most specifications. These compounds are called common compounds. IS 456-2000 has selected concrete mixes at several levels such as M10, M15, M20, M25, M30, M35 and M40. In this article the letter M refers to the combination and the number of the 28-day cube strength of a compound in N / mm2. Mixtures for grades M10, M15, M20 and M25 correspond to approximately mixture ratios (1: 3: 6), (1: 2: 4), (1: 1.5: 3) and (1: 1: 2) respectively.

Design Mixed Concrete Concrete

In these mixtures the performance of concrete is specified by the designer but the dimensions of the mix are determined by the concrete manufacturer, unless a small amount of cement can be set. This is a very sensible way to choose the dimensions of a mix of objects and objects in mind with many or different characteristics. The process results in the production of concrete with the right structures at the most economical. However, the designed mix does not serve as an indicator as this does not guarantee the correct mixing ratios. For improper concrete mixing standard or standard mixing (defined in codes for the number of dry ingredients per cubic meter and subtraction) can only be used for very small works, where the 28-day concrete strength does not exceed 30 N / mm2. No control tests are required of the reliability placed on the quantity of ingredients. The following table provides details of the different types of concrete mix scales and their strengths.

Table of concrete grade, mix ratio and compressive strengths

Concrete Grade    Mix Ratio               Pressure Power or compressive strengths

                                                                     MPa (N / mm2)               psi

Normal Range of Concrete

M5                          1: 5:10                              5 MPa                        725 psi

M7.5                      1: 4: 8                             7.5 MPa                        1087 psi

M10                       1: 3: 6                               10 MPa                        1450 psi

M15                       1: 2: 4                               15 MPa                        2175 psi

M20                       1: 1.5: 3                            20 MPa                        2900 psi

Standard Range of Concrete

M25                       1: 1: 2                                25 MPa                        3625 psi

M30                       Design Mix                       30 MPa                        4350 psi

M35                       Design Mix                        35 MPa                        5075 psi

M40                       Design Mix                        40 MPa                        5800 psi

M45                       Design Mix                        45 MPa                        6525 psi

High Levels of Concrete

M50                      Design Mix                        50 MPa                        7250 psi

M55                      Design Mix                        55 MPa                        7975 psi

M60                      Design Mix                        60 MPa                        8700 psi

M65                      Design Mix                        65 MPa                        9425 psi

M70                      Design Mix                        70 MPa                        10150 psi