Calculation of concrete solution


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Grade or class is the main indicator of concrete mix quality that is usually the focus of attention for those purchasing concrete. The other indicators, such as: Frost resistance, mobility, waterproofing capacity are second important topics here. Initially, however, the choice is made in favour of the grade or class.  Generally, the concrete strength is rather variable feature that gains throughout the whole curing process. 


For example: Concrete strength gained in three days and in a week will be different (up to 70% of the projected strength, under suitable weather conditions). In a standard period, 28 days of normal curing, the projected (calculated) strength is generated. And in six months it gets even higher. Basically, concrete curing and the process of gaining strength go on for many years. 

Concrete strength, grade, class. Test methods. Test samples.



cement grade M 100 M 150 M 200 M 250 M 300 M 350 M 400
B 7.5 B 10B 15 B 20 B 22.5 B 25 B 30
Sand, kg 524.3440.3405.1267223.1184179.2
Chippings, kg307.8259.7238.3157130.8123.1105.2
Water, l.82.281.774.253.953.24942.4
SP-1, kg2222

* Actual material consumption for 1 m3 of concrete mix including water absorption of inert materials and concrete cube strength.

M 100 / B 7.5 - Preparation works before starting concrete placement for monolithic slabs and foundation. It is also applied as a concrete pad in road construction works.

M 150 / B 10 - Preparation works before starting concrete placement for monolithic foundation; foundations for small building spaces; for filling floors and screeds, concreting roads.

M 200 / B 15 - Manufacturing foundations, floors, screeds, concreting roads, raft and piled foundations, stairways.

M 250 / B 20 - Monolithic foundations.

M 300 / B 22.5 - Monolithic foundations, fences, walls, stairways, floor slabs. The most demanded concrete grade.

M 350 / B 25 - Floor slabs, columns, monolithic walls, pool decks, beams and crossbars.

M 400 / B 30 - Bridge conduits, columns, crossbars, bank vaults and other structures with special requirements.

© 2019 South Kyrgyz Cement CJSC

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Concrete Calculator

M 100 / B 7.5 - Preparation works before starting concrete placement for monolithic slabs and foundation. It is also applied as a concrete pad in road construction works.M 150 / B 10 - Preparation works before starting concrete placement for monolithic foundation; foundations for small building spaces; for filling floors and screeds, concreting roads.M 200 / B 15 - Manufacturing foundations, floors, screeds, concreting roads, raft and piled foundations, stairways.M 250 / B 20 - Monolithic foundations.M 300 / B 22.5 - Monolithic foundations, fences, walls, stairways, floor slabs. The most demanded concrete grade.M 350 / B 25 - Floor slabs, columns, monolithic walls, pool decks, beams and crossbars.M 400 / B 30 - Bridge conduits, columns, crossbars, bank vaults and other structures with special requirements.