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Brief Analysis of Common Clay Brick Sizes and Specifications of Sunrise Refractory

Date:2020-02-26 15:21 | From:Zhengzhou Sunrise Refractory | Author:admin
Clay bricks are artificial small blocks for construction. The standard specifications of an ordinary clay brick are 240mm in length, 115mm in width, and 53mm in thickness. The width of the gray seam is considered as 10mm, so the ratio of the length, width, and thickness of the standard brick is (240+ 10): (115 + 10): (53 + 10) = 4: 2: 1 proportional relationship. The standard brick usage for a 1 cubic meter brick masonry is 512 (including gray joints). Today, Anrui Refractory will tell you about the size and classification of clay bricks.
Clay bricks are classified according to their porosity: solid bricks (bricks with no porosity or less than 25% porosity), porous bricks (porosity equal to or greater than 25%), bricks with small holes and large numbers of holes, often used in load-bearing parts, strength Higher rank. Hollow bricks (bricks with a porosity equal to or greater than 40%, large pores with a small number of holes, often used in non-load bearing parts, and low strength grades). Solid bricks and porous bricks are mostly used for load-bearing structural walls, and hollow bricks are mostly used for non-load-bearing structural walls.
The clay bricks produced by Zhengzhou Sunrise Refractory are made of clay (including shale, coal gangue and other powders) as the main raw material, which are processed by mud, shaped, dried and roasted. The size of ordinary bricks is 240mm, 115mm, 53mm. According to the compressive strength (Newton / square millimeter, N / mm2), it is divided into 6 strength levels: MU30, MU25, MU20, MU15, MU10, and MU7.5. 
Al2O3 content of common clay bricks is generally more than 40%, and Fe2O3 content is less than 2.0 to 2.5%. The clinker in the ingredients is 65-85%, and the combined clay is 35-15%. The comminuted combined clay and the ground clinker are mixed and ground together, and then mixed with the granulated clinker to form a semi-dry mud, which is formed under high pressure and fired at about 1400 ° C. The performance is better. Clay bricks are weakly acidic at high temperatures, and their resistance to alkaline slag erosion is slightly worse, but they increase with increasing Al2O3 content. Thermal stability is better than silicon brick, magnesium brick (see magnesia brick), etc.
Clay bricks are made from local materials, are cheap, durable, and have the advantages of fire resistance, heat insulation, sound insulation, and moisture absorption. They are widely used in civil engineering. Waste broken bricks can also be used as aggregates for concrete. In order to improve the shortcomings of ordinary clay bricks, such as small, self-heavy, and large soil consumption, it is developing in the direction of light weight, high strength, hollow and large blocks.
Lime-sand bricks are made of lime and quartz sand, sand or fine sandstone in an appropriate proportion, ground, mixed with water, semi-dry pressed, and cured by autoclaving. Fly ash bricks are made of fly ash as the main raw material, mixed with coal gangue powder or clay and other cementing materials. They are made by batching, molding, drying and firing, which can make full use of industrial waste residue and save fuel. Qualified blast furnace clay bricks are dried and treated with vacuum phosphoric acid impregnation and phosphoric acid impregnation products fired at low temperature for the second time.

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