Mortar grade and mix ratio, what is the mortar mix ratio of various labels

The mix ratio of M10 cement mortar is: 275kg of cement per cubic meter of mortar, 1450kg of river sand, 320kg of water, and the mix ratio is: 1::;

M5 mixed mortar per cubic meter with 250kg of cement, 1450kg of river sand, 100kg of plaster, 280kg of water, the mix ratio is 1:::

The design of masonry mortar mix ratio should meet the following basic requirements:

1) The workability of the mortar mixture should meet the construction requirements, and the bulk density of the mixture: cement mortar 1900kg m; Cement mixed mortar 1800kg m.

2) The strength and durability of masonry mortar should meet the design requirements.

3) The economy should be reasonable, and the amount of cement and admixture should be less.

m10=

Cement ordinary. Sand in sand.

Cement ordinary. Sand in sand. The density of mortar can be set at 2250kg per cubic meter, and the amount of sand is used to subtract cement.

The dosage for each side is as follows.

m10=280kg

m20=350kg

The error is plus or minus 20kg

The details are as follows:

Mix ratio of m5 cement mortar:

Condition: Construction level, average; Sand in sand. Moisture content of sand:; Actual strength of cement: mpa.

M5 mix ratio (weight ratio): cement: medium sand = 1:. per cubic meter of brick masonry, m5 cement mortar is required, where cement; Medium sand 354kg (.

Mix ratio of cement mortar:

Condition: Construction level, average; Sand in sand. Moisture content of sand:; Actual strength of cement: mpa.

Mix ratio (weight ratio) cement: medium sand = 1:. per cubic meter of brick masonry, the need for cement mortar is, of which cement; Medium sand 373kg (.

It is made by mixing inorganic cementitious materials with fine aggregates and water in proportion, also known as mortar. It is used for masonry and plastering projects, which can be divided into masonry mortar and plastering mortar, the former is used for the masonry of bricks, stones, blocks, etc., and the installation of components; The latter is used for plastering the surface of walls, floors, roofs and beams and columns to meet the requirements of protection and decoration.

In the ordinary mortar material, there is also a paste made of gypsum, lime plaster or clay mixed with fibrous reinforcing materials and water, which is called ash, plaster, mud or cement. Commonly used are hemp knife ash (lime paste mixed with hemp knife), paper tendon ash (lime paste mixed with paper tendons), gypsum ash (lime plaster mixed with plaster and paper tendons or glass fiber, etc.) and plaster (a small amount of lime and wheat straw or straw mixed with clay).

Mix ratio of m5 cement mortar:

Condition: Construction level, average; Sand in sand. Moisture content of sand:; Actual strength of cement: mpa.

M5 mix ratio (weight ratio): cement: medium sand = 1:. per cubic meter of brick masonry, m5 cement mortar is required, where cement; Medium sand 354kg (.

Mix ratio of cement mortar:

Condition: Construction level, average; Sand in sand. Moisture content of sand:; Actual strength of cement: mpa.

Mix ratio (weight ratio) cement: medium sand = 1:. per cubic meter of brick masonry, the need for cement mortar is, of which cement; Medium sand 373kg (.

C20 concrete mix ratio.

Condition: slump 35--50mm; Sand type: coarse sand, preparation strength: ; Stones: river stones; Maximum particle size:; Cement strength grade, actual strength

C20 Concrete mix ratio (weight ratio): cement: sand: gravel: water = 1:::

Among them, per cubic meter of concrete, cement content: 326kg; Sand content: 598kg; Crushed stone: 1332kg

C25 concrete mix ratio.

Condition: slump 35--50mm; Sand type: coarse sand, preparation strength: ; Stones: river stones (pebbles); Maximum particle size:; Cement strength grade, actual strength

C25 Concrete Mix Ratio (Weight Ratio): Cement: Sand: Crushed Stone: Water =

Among them, per cubic meter of concrete, cement content: 370kg; Sand content: 549kg; Crushed stone: 1344kg

In the actual construction process, the mix ratio of mortar and concrete will change due to different construction conditions and material conditions, and it is necessary to adjust the site according to the actual situation. Therefore, the mix ratio mentioned above is only a reference value. But the magnitude of the change will not be too large.

1. Cement mortar is divided into five strength grades: M5,

Among them, M5 cement mortar has the lowest strength and is generally used for masonry non-load-bearing walls and temporary building walls.

It is the most commonly used cement mortar in modern construction, which is used for masonry load-bearing walls and large area walls.

M15 and M20 cement mortar are used for load-bearing walls or walls with waterproof requirements, as well as masonry designed to increase strength.

2. Cement mortar with the following example: (per m).

M5 cement mortar: cement, 216 kg; Medium sand,; water, cement mortar: cement, 246 kg; Medium sand,; Water, m10 cement mortar: cement, 271 kg; Medium sand,; water, m15 cement mortar: cement, 330 kg; Medium sand,; water,.M20 cement mortar: cement, 390 kg; Medium sand,; water,.

Cement mortar is divided into 6 grades. Cement mortar masonry mortar and plastering mortar, mortar grade used for masonry:; Mortar grade used for plastering:

Guangdong's is divided into 5 levels, namely M5, M10, M15, M20!Levels go from low to high, and it's the same!

The mortar is as follows:

1. If you want to configure the mortar model of M5 cement, you need to prepare sand, choose medium sand, and the moisture content of the sand must be reached. When the strength of cement is reached, cement and medium sand should be configured in accordance with the proportion. In 1 cubic meter, the cement mortar required reaches a cubic meter, of which 68 kilograms of cement are needed, and 350 kilograms of medium sand.

2. If the cement mortar to be configured, the ratio of cement and medium sand is configured according to 1 ratio, of which the volume of cement mortar reaches cubic meters, cement needs 77 kg, and medium sand needs 370 kg.

3. There are also M10 models of cement mortar, and the proportion between each cubic meter is that of kilograms of mortar, 275 kilograms of cement, 1450 kilograms of river sand, and 320 kilograms of water.

Difference Between Cement Mortar and Mixed Mortar:

1. The composition is different, cement mortar is mainly cement plus sand and stone, generally speaking, it is suitable for the masonry of the wall or indoor plastering, and the cement mixed mortar is mixed with gypsum in addition to cement, sand and water, and the scope of application is relatively wide, and the cement mortar needs to be made in accordance with a certain ratio.

2. The scope of application is different, and the use of decoration plastering generally chooses cement mixed mortar. For exterior walls or bathrooms, cement mortar is used. Mainly because of different environments, the bonding ability will be different.

Ready-mixed masonry mortar or cement mortar is generally divided into 7 grades, namely M30, M25, M20, M15, M10, respectively. Cement mixed mortar is generally divided into 4 grades, namely M15, M10, .

The unit of strength is mpa(n mm).The difference between grades is 5; The difference between M10 and M15 is 50 levels of intensity: Intensity, Intensity, Intensity, M10, Intensity, M15.

There are many kinds of mortar on the market and strength grades, if the types and strength grades are different, their performance, scope of use, construction methods will be different, we must choose according to the actual use environment, construction needs and other aspects when choosing.

The strength grade of the mortar is not fixed, it is generally affected by the factors such as construction technology, material quality, modulation ratio, etc., when the impurities in the mortar or the cement spring posture and other contents are a lot, the mortar strength will decline, affecting the performance and service life of the mortar.

Things to pay attention to when blending mortar

1. In the process of modulation, an appropriate amount of additives such as waterproof powder should be added to the mortar, the purpose of which is to improve the viscosity and viscosity of the mortar. If you want to make concrete from the mortar, you should also pour the right amount of stones into the mortar.

2. When modulating, it is necessary to master the modulation time and stirring method, and the stirring time can not be too long or too short, if the stirring time is too long, or the time is too long, it will cause the lime in the mortar to be volatilized, resulting in a decrease in strength, or cause problems in the modulation process of the mortar.

Mortar strength grade: The strength of masonry mortar is expressed in terms of strength grade.

The strength grade of mortar is determined by measuring the compressive strength value (unit of mpa) at the age of 28 days measured by standard test methods under standard curing conditions (temperature (20 2) and relative humidity of more than 90%).

In general, the masonry mortar used for the wall of multi-storey buildings; Masonry such as masonry foundations, inspection wells, and rainwater wells are often mined with M5 mortar; Industrial plants, substations, basements and other masonry use M25-M10 masonry mortar; Mortar below M25 is commonly used in buildings below the second floor; Simple bungalows and temporary buildings can choose lime mortar; Generally, highway construction drainage ditches use masonry mortar of strength grade.

Mortar strength determination standard:

The standard of basic performance test methods for building mortar (JGJ T70-2009) makes the following provisions: the strength grade of mortar is determined by the average compressive strength of the cube test block with side length cured to 28 according to the standard curing conditions. The mortar strength grade is divided into M5, M25 and M30.

The cubic specimens were evaluated as a group of 3, and the arithmetic mean value of the measured values of the three specimens was taken as the average compressive strength of the mortar cube specimens of the group of specimens (accurate to.

When the difference between one of the maximum or minimum values of the three measured values and the middle value exceeds 15% of the middle value, the maximum value and the minimum value are rounded together, and the middle value is taken as the compressive strength value of the restructured specimen. If the difference between the two values and the median value is more than 15% of the median value, the experimental results of this group of specimens are invalid.