Concrete speading

Different types of concrete grades and their uses

Whether you are looking for the right domestic or commercial concrete mix for your construction job, or are just curious about the different grades of concrete and would like to know more, read on to get an understanding of these different types of concrete and their uses.

 

Understanding Grades of Concrete

Grades of concrete are defined by the strength and composition of the concrete, and the minimum strength the concrete should have following 28 days of initial construction. The grade of concrete is understood in measurements of MPa, where M stands for mix and the MPa denotes the overall strength.

 

Concrete mixes are defined in ascending numbers of 5, starting at 10, and show the compressive strength of the concrete after 28 days. For instance, C10 has the strength of 10 newtons, C15 has the strength of 15 newtons, C20 has 20 newtons strength and so on.

 

Different mixes (M) come in various mix proportions of the various ingredients of cement, sand and coarse aggregates. For instance, M20 comes in the respective ratio of 1:1:5:3. You can see other examples below in the table.

 

Concrete Grade Mix Ratio (cement : sand : aggregates) Compressive Strength
MPa (N/mm2) psi
Grades 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 Grade 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 Strength Concrete Grades
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

 

Concrete being poured

Choosing the right concrete grade for the construction job:

So what can these grades be used for and which is best for the job at hand? Below is a list of a few of the initial concrete grades and what they are best used for.

 

C10

Used for: Patio slabs, pathways and non-structural work

Type: Domestic & commercial use

 

C15

Used for: Pavement kerbs and floor blinding

Type: Domestic & Commercial

 

C20

Used for: Domestic floors and foundations (where the weight of structure will be lighter). Also good for workshop bases, garages, driveways and internal floor slabs.

Type: Domestic

 

C25

Used for: Construction in all areas. Multi-purpose concrete mix, usually used for foundations.

Type: Domestic & Commercial

 

C30

Used for: Pathways and roadways (this is the lowest grade concrete mix that can be used for this purpose). More durable than the grades that have come before, and thus is much more weather-resistant and can take heavy road traffic.

Type: Commercial

 

C35

Used for: Commercial structures. This heavy concrete mix is usually used for creating external walls and slabs, as well as for structural piling.

Type: Commercial

 

C40

Used for: Commercial construction sites, creating foundations and beams for structural support and roads. The most durable in this list, C40 can withstand chemical corrosion also, so is frequently used on farms where slurry could corrode structures, or in septic tanks.

Type: Commercial

 

We hope you found this guide useful, and if you are interested in learning more, visit our blog for more information on the concrete types available to you.

Base Concrete Lorry

The difference between Concrete & Screed

So everyone has probably heard of concrete but have you ever heard of screed? To most, these two materials could be one and the same but there are some key differences. So let’s start by saying that concrete and screed are used in the construction industry for building purposes but unless you a part of that industry you are likely not to know too much about them. Continue reading The difference between Concrete & Screed

Top 5 tips for maintaining your concrete driveway

Concrete is the building material many of our driveways are made from. It’s long lasting and is very efficient. However, it is down to you and me to ensure that the concrete driveway is sufficiently maintained. This will ensure that it lasts a long time & does its job correctly. There are a number of tips that will enable you to achieve these goals on your driveway. Here are the 5 tips that top the list.
Continue reading Top 5 tips for maintaining your concrete driveway

Concrete flooring

The pros and cons of concrete flooring

Concrete flooring

Concrete is one of the most common flooring materials in use. There are a number of reasons that can influence the choice for this kind of floor. It is, however, a personal choice whether to use or not use it as your flooring material. Of course, your decision must be an informed one based on the associated advantages and disadvantages of these floors. The following are the most important pros and cons of concrete flooring that you ought to know:

Continue reading The pros and cons of concrete flooring

5 Fun Facts About Construction

For a very long time, we have been constructing buildings including strange structures and mind-blowing buildings. While construction is how we usually shape the structures around us, the technique, the process, and the scale have all changed a great deal. Due to this, construction is now more than just the assembly of infrastructures and buildings.

Here are 5 fun facts about construction. Continue reading 5 Fun Facts About Construction

Building Materials brick and concrete

Which Is Better: Concrete, Wood, or Brick? A Closer Look into Home Building Materials

Long ago, choosing a building material was a simple decision since the options were reasonably limited. Today, however, you can find yourself lost with all the choices available in the market, from natural products to synthetic alternatives, even to combinations of both.

If you are wondering what building material you should use for house building (check out this excellent house builders guide for more information), the most popular picks are wood, brick, and concrete. Although they are all extensively used in modern-era home construction, each of them has its own unique strengths and weaknesses, particularly in the aspects of insulation value, cost, durability, safety, ease of construction, and maintenance.

Building Materials brick and concrete Continue reading Which Is Better: Concrete, Wood, or Brick? A Closer Look into Home Building Materials

painting concrete patio

How to Transform Your Concrete Patio Garden Space

Now that summer is here you might find yourself spending a lot more time outside in your back garden, and if you happen to have a concrete patio, we know they are not always the most pleasing to the eye.

Luckily, there are some really fun and easy ways you can renovate your backyard garden area by revamping/decorating your concrete – and we’re going to show you how!

The first option is to paint or mark your concrete in a patterned way to create an appealing effect. Another option (if you haven’t yet got a concrete patio, or can put a new layer of concrete on top of the existing patio) is stamping your concrete with a design, like this.

Continue reading How to Transform Your Concrete Patio Garden Space

concrete moon lunar

Moon Rocks into Concrete!

Concrete forms the basis of the vast majority of modern construction. It’s strong, versatile, and hard wearing, making it a perfect building material for both commercial and domestic use. But there is one downside to concrete, one you probably hadn’t had to consider: it’s very heavy. Now, this might sound obvious, and normally it isn’t much of an issue. But if you’re thinking of building something on the moon, suddenly it becomes a big consideration.

concrete moon lunar

Continue reading Moon Rocks into Concrete!