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Concrete types and their strenght

Choosing a right type is essential

Depending on the type and size of your project different types of concrete and its strenghts are required. We at Mister Concrete are able to mix various types including additives depending on the requirements provided.

Find bellow the most common concrete types used, concrete mix ratio and what they are used for. Please contact one of our operators in case you need an assistance choosing the correct type or have a special requirements regarding additives.

 
domestic
comercial
screed
Ready mix concrete

Manufactered in a batch-plant delivered to a site using drum mixer truck.  Most commonly used for big commercial project as high quality and huge amounts can be achieved.

 
Volumetric or on-site mixed concrete

Mixed on site using mobile concrete mixers (raw materials in compartments brought to site and mixed in the truck itself). Only needed amount is mixed therefore eliminating any excess waste and customer pays only for what is actually used.

 
SCC (Self-compacting concrete) Or self-consolidating concrete is a highly fluid mix (close to self-leveling) meaning it gets via corners and through obstructions with less manual work needed (f.e. no vibration or tamping required). Reaches same quality as regular concrete as fluidity is achieved not by adding more water but by using a high proportion of fine aggregate combined with superplasticisers and viscosity-enhancing admixtures.
Decorative concrete Wildely used in interior and exterior design nowadays. Results are achieved by additives during the pouring itself or by working with it once it is cured. Methods include stamped concrete, polished concrete, acid staining and many others.
Fast setting concrete When a project requires a concrete to dry fast either because of the weather conditions or the character of a work a fast drying concrete can be used. This type of concrete dries in just few minutes which allows the project to be completed faster. Usually used for fence post or road signs concreting.
Roll compacted concrete (RCC) Or rolled concrete is very similar to a regular concrete only less water is used and a Portlant cement might be partially substituted by fly ash. RCC is then placed the similar way as asphalt is meaning it is compressed by vibratory rollers allowing it to achieve a high durability.
Fiber-reinforced concrete (FRC) Concrete which contains fibrous additives in order to increase its structural composition. Fibers can be of various materials (synthetic fibers, steel fibers, glass fibers and natural fibers) which are randomly distributed and oriented throughout the material. Fibers do not increase strenght of concrete (might even decrease it in some cases) but help to avoid cracing and water bleeding.
Pervious concrete

Special concrete that allows water to pass directly through and reduce the runoff from a site. This is possible due to high porosity of the concrete created by using mostly large aggregates. Usually used for park sites, walkways and residential streets.

Foamed concrete Lighweight type of concrete can also be called mortar or foamed cement as there are no aggregates included into the mix and it only consists of cement and foam (water, air and foaming agent). As it has a great thermal and acoustical insulating attributes its uses varies from an ordinary concrete. Really great for its light weight is used for concrete walls, foundations, beams and slabs. Foam concrete is also earthquake-resistant because of the light weight of the buildings.

Type Strenght Mix ratio Use
C7 / C8 / GEN 0 7 Newton/28 day 1:4:8

Low strenght and density concrete with a low cement content. Usually used as a sub-base for road works, kerb and path edgings bedding and backing and bindings under slabs

C10 / GEN 1 10 Newton/28 day 1:3:6 Low strenght highly flexible concrete used generally for binding purposes. Used for non structural construction elements such as drainage works, trench fill foundations, floors with low traffic, patio slabs and strip footings.
C15 / GEN 2 15 Newton/28 day 1:3:5 Slightly more stronger than C10 ideal to be used for floor blinding and kerb mix. Also wildly used for floors where no pernament finish will be added (f.e. carpet). Used as a foundation for smaller walls as well.
C20 / GEN 3 20 Newton/28 day 1:3:4 Wildly used for foundation and footings of structures with the lighter overall weight such as garage foundation or shed bases. Also used for internal floors, paths and driveways.
C25 / ST 2 25 Newton/28 day 1:2:4 Used for foundations of heavier structures such as double storey extensions. Also suitable for driveways, pathways, footings, bases and house slab foundations. If used as a floor pernament finish might be added (f.e. floating floor).
C30 / PAV1 / ST3 30 Newton/28 day 1:2:3 Durable and suitable to use outdoors for driveways, patios, pathways and yards.
C35 / PAV2 35 Newton/28 day 1:1.5:3 Stronger compared to C30 also ideal for external use for heavy used driveways, patios, pathways and yards. Also used for external walls, slabs and structural footings. Sutiable for agricultural and construction uses for barns and yards too.
C40 40 Newton/28 day   Strong type of concrete widely used where high durability and severe exposure are required. Used in agricultural industry as is able to withstand acidic and hazardous chemicals. Often seen used in roadworks, railways, driveways and commercial projects for foundations and beams.

Levelling screed Screed to be used as a final base for the flooring.
Wearing screed Without placing any other flooring on top this type serves as a floor itself.
Bonded Poured directly onto the substrate in order to maximise the bond between two layers.
Unbonded A membrane is placed between the substrate and the screed.
Floating Also unbonded screed is placed on an insulation (acoustic or thermal).
Cement sand screed Maximum aggregate size up to a 4 mm.
Fine concrete screed Maximum aggregate size up to a 10 mm.
Pumpable self-smoothing screed Fluid screed or self-levelling screed pumped into the area where it self-levels itself to required accuracy.

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