The raw material ratio of concrete blocks is crucial to producing high-quality concrete blocks.

     Generally speaking, the raw materials for concrete blocks include cement, sand, gravel, stone dust, and water. The rationality of the proportion directly affects your hollow block strength, compactness, and durability.

    The following is an example of a general raw material ratio: Cement: Cement is the main cementing material of concrete blocks and plays a key role in the strength and stability of the bricks. Generally speaking, the cement mix ratio is about 5% to 10%. Sand: Sand is the fine aggregate in concrete blocks that fills the gaps between the cement and gravel, making the bricks denser and stronger. Usually, the ratio of sand to cement is about 25% to 30%. Gravel: Gravel is the coarse aggregate in concrete solid bricks and is used to add strength and durability to solid concrete bricks. The particles should be uniform and balanced in size. Usually, the ratio of gravel to cement is about 50% to 60%. Water: Water is an important ingredient in concrete bricks. It plays a role in regulating viscosity, accelerating setting, and maintaining proper humidity during concrete-making. The proportion of water should be appropriate, usually around 10% to 15% based on your material wetness degree .It should be noted that the raw material ratio of different concrete bricks may be adjusted under different uses and requirements. In addition, when producing concrete bricks, factors such as the source and quality of raw materials, production equipment, and process conditions need to be considered to ensure the production of high-quality concrete brick products. In short, the raw material ratio of concrete bricks is a crucial part of the production process. A reasonable raw material ratio can ensure the production of high-quality bricks and meet various requirements of construction projects.

Africa and South America, as continents with rich and diverse cultures and architectural traditions, are each filled with a variety of common sizes of concrete blocks.

Below are details about common sizes of concrete blocks in two regions: Africa and South America. Africa: Nigeria: In Nigeria, the commonly used concrete block size is 225mm × 225mm × 450mm. and  225mm × 150mm × 450mm, South Africa: Concrete brick sizes in South Africa are usually 190mm × 190mm × 390mm. This size also complies with international standards and is widely used in the local construction industry. Egypt: Egypt typically uses concrete brick sizes of 240mm × 115mm × 53mm. Bricks of this size are relatively common in Egyptian architecture and are recognized as a size that meets international standards.

South America: Brazil: In Brazil, the commonly used concrete brick size is 190mm × 140mm × 390mm. Concrete bricks of this size are widely used in Brazilian construction,  Argentina: In Argentina, the common concrete brick size is 190mm × 95mm × 390mm. . Colombia: Colombia typically uses concrete brick sizes of 190mm x 90mm x 190mm.

Overall, concrete bricks in Africa and South America come in a variety of sizes, but generally comply with international standards and meet local construction needs. Architects and engineers can select appropriate concrete brick sizes based on local building codes and standards to ensure structural stability and economy.

Anyway, Henry intelligent block machine company can customize any different size and type of concrete blocks as you require.even the interlocked concrete hollow blocks, interlocking solid bricks, stock bricks, wall bricks, decorative cement blocks , cinder block , paving bricks, color pavement , road curbs curb stone , roof ceiling hourdis blocks and so on.

Concrete hollow Block Strength 

The concrete block strength is determined by the nature of the material , the quantity of Cement, and other materials used. The water curing on sunshine after the manufacture of blocks plays an important role in the final compressive strength and quality of blocks.

In past, we have obtained results as indicated below:

Cement sand Blocks

Cement – gravel -stone dust

The strength of concrete bricks is usually measured by compressive strength, and its strength is affected by many factors, including the quality of raw materials, production technology, and curing processes.

The curing process has an important impact on the strength of concrete bricks. Proper and correct curing can improve the strength and durability of concrete bricks. The strength of concrete bricks and comparison before and after curing will be explained in detail below, and corresponding tables will be provided. Strength of Concrete Bricks The strength of concrete bricks is usually assessed by compressive strength, which is the concrete brick’s ability to resist compressive forces when a force is applied. Compressive strength is an important indicator for evaluating the quality of concrete bricks, usually expressed in unit area (such as MPa).  Comparison before and after curing is an important means to evaluate the curing effect of concrete bricks. The curing effect can be analyzed by comparing the compressive strength before and after curing. Table The following is an example of a possible table to compare the compressive strength of concrete bricks before and after curing. Concrete brick number Compressive strength before curing (MPa) Compressive strength after curing (MPa) Curing effect 12025 Increased 21820 Increased 32221 Decreased 42424 No change In the above table, the numbers of different concrete bricks and the resistance before and after curing are listed. Compressive strength and curing effect. By comparing the compressive strength before and after curing, the changing trends of concrete bricks under different curing conditions can be analyzed and the curing effect can be evaluated.

Before you start to set up a block factory for making concrete blocks, do you plan to re-sell concrete hollow blocks or use them for your project? The following points you have to pay attention to

Firstly, you should go to your building market to do a detailed research which block size is the most popular used .by that your block will be at a good sale in the future. for example, in Malawi, the most popular sizes are 400*200*200mm hollow cement blocks and 400*150*200mm 6-inch hollow blocks.

Secondly, check whether the electricity power is available at your site , if not, whether inquiry your grid department can connect the electricity power to your place. Unless you send an inquiry to us, we will provide you with a diesel generator set to produce electricity or advise you of a diesel version concrete block forming machine; we have a fully automatic concrete block molding machine , a semi-automatic block forming machine, and a hand press manual block making machine.

Thirdly, sign in to Google.com or Youtub.com to search for the Henry block machine and send an inquiry to us. Our colleagues will communicate with you in a timely manner about your block size and your production requirements, and finally, we will give you professional suggestions on the block machine model selection.

Fourthly, after the production of your concrete block molding machine, we arrange shipping to you, and you clear out your machines and install it by yourself with our installation manual and guild videos, or we could send our Chinese engineers to your place for installation and training with charging fee.

Fifthly, we send you the ideal material ratio for you to consider. Of course, you may choose to use your own block percentage material to prepare the concrete and mix it, feeding it into a block machine to produce your block final products.