Decades pass, and brick is still one of the most popular building materials. This is due to its durability, environmental friendliness, as well as high thermal insulation properties. However, the quality of the wall depends not only on this material, but also on the mortar, which should be easy to lay on the surface, have good adhesion to the products, fill the joints and be resistant to precipitation.
How to get high strength
You can achieve high strength of the mortar by correctly determining the volume of cement, because the brick is laid only on the mortar with such a composition. Depending on the load and purpose of the structure, different types of cementitious mortar can be used, to which a certain type of cement is added. Sometimes, lime-cement mortar is used for the construction of internal partitions , where the volume of the binder is reduced.
Various substances are added to the ingredients to increase plasticity. Sometimes even ordinary shampoo appears among them. The main components are:
The proportion of the last two components usually has the following form: 1 to 4. This indicates that for one cubic meter of mortar, a fifth of the cement should be used. Given that the weight of 1 m 3 is approximately 1300 kg, then 260 kg of cement is used to prepare the composition.
Cement masonry consumption per square meter
Before starting work, you need to find out what cement consumption is per 1 m2 of brick laying. This indicator will depend on the thickness of the wall: the larger it is, the greater the amount of material required. If you build walls, the thickness of which will be a quarter of a brick, then 5 kg of cement will be needed per square meter of masonry, this is true if the solution will have the brand M-100.
The consumption of cement per 1 m2 of brick laying in kg will be mentioned below. The volume of cement is reduced to 4 kg, if you prepare a solution of brand M-75. For the M-50, 2.5 kg of cement will be needed. The mortar will be consumed equally on the brickwork. Thus, for a cubic meter, 300 kg is needed. This is equal to the limit of 0.25 to 0.3 m 3 of solution per 1 m 3 of surface. The ratio of sand and cement will look like this: 4 to 1. It will be necessary to achieve optimal stiffness and mobility.
The consumption of cement per 1 m2 of brick laying will change if during the mixing process are added:
- synthetic additives;
- limestone and other components.
At the same time, the ratio of sand and cement can decrease to 9 to 1. When concrete is shut, then 500 kg of cement and not more will be consumed per 1 m 3 of the mixture. The exact characteristics of concrete can be found by reading state standards. However, the consumption of cement per 1 m2 of masonry bricks may change if the builders pursue the goal of obtaining a certain density, viscosity characteristics and drying time.
But the technology remains the same. It involves mixing cement and sand in a dry form, to which water is gradually added in small portions. As a result, you should achieve a uniform composition that does not crack much and is solid. In this case, the masonry will last longer, the concrete will be durable, and the design will become distinguished by durability and high reliability.
Varieties of cement mortar
Now you know the consumption of cement per 1 m2 of brickwork. However, before starting work, it is also important to know about the types of cement mortar. Bricks can be laid on mortar, to the ingredients of which limestone and other materials are added. The cement consumption will be determined by the volume of components. Lime mix is inferior to other solutions in terms of strength, therefore, such compositions are almost never used to create capital structures.
Cement-lime mass is plastic, therefore, it can be used for bricklaying. When it comes to cement mixing, the following components are used to prepare it:
Reliability, durability and strength will depend on the brand and quality of cement. The consumption of this component and the proportions of the components are almost unchanged. Most often the brand changes. For example, for self-supporting walls it decreases, while for load-bearing walls a higher mark is required. In order to get 1 m 3 of the mixture, it is necessary to use cement in the amount of 8 bags, the volume of each of which will be 50 kg.
Its ratio with sand is as follows: 1 to 4. At the same time, to create one cubic meter of masonry, 0.3 m 3 of mortar and 405 bricks will be necessary, each of which will be 250x120x55 mm in size. In this case, the masonry should be in one brick.
Classification of cement mixtures
Cement consumption rates per 1 m2 brick masonry were mentioned above. However, before starting work, it is also important to know the main types of cement mixtures. The first group includes cement-sand mortars or cloves. In their manufacture, the dry method is used, in which a drum furnace is used. Such mixtures are more expensive compared to the purchase of cement and sand, but are more convenient due to the stable quality of the sand.
The second variety is cement mixtures with rheological additives, which include cellulose ethers that increase primary adhesion and water retention. They turn the mixture into a masonry mortar, tile adhesive or plaster. This group is more expensive, but is able to cover almost the entire area of use of cement mixtures. The third group is the most expensive, because it includes dry cement mixtures containing strength rheological additives that increase resistance to abrasion and tearing.
The consumption of cement per 1 m2 of masonry facing brick will remain the same as in the above case. This is true if the product will be the same size. As a rule, such masonry is carried out in one brick, so you will not encounter an excessive consumption of raw materials. The cement consumption per 1 m2 of brick laying in half a brick will be less than exactly 2 times less.