Grades of concrete mainly classified in three categories as follows i) Lean concrete ii) Ordinary grade of concrete iii) Standard grade of concrete iv) High strength concrete grades LEAN CONCRETE Lean concrete is a mix where the amount of cement is lower than the amount of liquid present in the strata. In the classification of concrete mix, the letter M denote Mix design, and the Numbers represent the predetermined works cube strength of 15cm cube after curing of 28 days in N/mm2. You might be curious to know where these grades of concrete can be used. In this instance, t he g rade is defined as the strength and composition of the concrete based on the minimum strength the concrete needs to be after 28 days following initial construction.. C Grade concretes are measured using cubic concrete testing. Different Grades of Concrete explained … Different projects often require different grades of concrete. The grades of concrete are converted into mix proportions consider for M20 concrete mix proportion will be 1: 1.5: 3 (cement, sand and coarse aggregates). Suitable Concrete Grade For Construction: Based on structural design requirements the grade will be selected and there are two types of concrete mixes, design mix & nominal mix. The different grades of concrete are given as M10, M15, M20, M25, M30, M35 and M40. There are some other special grades of cement available for specific needs. Here we will discuss some of the grades of concrete and their uses in the construction job. Different construction projects will require concrete of certain strength ratings, so understanding the difference between concrete grades is key to finding the ideal mix for your specific requirements. In the classification of concrete mix, the letter M denotes the Mix and the numbers 10, 15, 20, 25, 30, 35, 40 represent the predetermined works cube strength of 15 cm cubes after curing of 28 days in N/mm2. Happy Learning The concrete grades are normally indicated as M30 or C30 or C30/37 and so on depending on the code. Grades Of Concrete: In IS: 456-1978, the different grades of concrete are given as M10, M25, M20, M25, M30, M35, and M40. The works cubes strength refers to the strength archived […] Selecting the proper concrete grade for the construction job is a difficult task. C5 Up to M20 grade concrete, we use general types of cement. M5 GRADE Where M stands… We are here to help you choose the best concrete grade for your construction projects. A simple table showing concrete mix ratios (Design mix & Nominal mix) for various concrete grades, a typical calculated example of M40 grade concrete and required water proportion for most ratios. The alphabet ‘M’ or ‘c” refers to it as a ‘Concrete Mix’ and the number that follows indicates the characteristic strength of that that mix in MPa at 28 days. Concrete grades include; C7/8 Concrete, C10 Concrete, C15 Concrete, C20 Concrete, C25 Concrete, C30 Concrete, C35 Concrete and C40 Concrete. Like seashore building, industrial concrete, precast works, nuclear power plants. In these areas, special grades of concrete will be used which are chemical resistant, corrosion-resistant.