Paving Brick A Brief Introdction

Paving brick frost resistance is caused by 15 freeze-thaw cycle does not produce cracks, delamination, peeled, missing edge, cornering and other frozen phenomenon; and the weight loss rate of less than 2%, the intensity loss rate is less than the specified value. Water absorption refers to the water at room temperature for 24 hours of water absorption. The saturation coefficient is the ratio of the water absorption at room temperature to the boiling water at 5 h. Severe weathering area in the 1,2,3,4,5 and other five areas used in ordinary clay brick, the frost resistance test must be qualified, other areas do not do antifreeze test.

Paving the degree of weathering division: paving brick weathering performance is usually used frost resistance, water absorption and saturation coefficient of three indicators. Frost resistance refers to the freeze-thawing phenomenon after 15 cycles of freeze-thawing, and the weight loss rate is less than 2% and the strength loss rate is less than the specified value. Water absorption refers to the water at room temperature for 24 hours of water absorption. The saturation coefficient is the ratio of the water absorption at room temperature to the boiling water at 5 h. Severe weathering area in the 1,2,3,4,5 and other five areas used in ordinary clay brick, the frost resistance test must be qualified, other areas do not do antifreeze test.

Paving brick production and use, in China has 3,000 years of history. Today, the construction materials used in the wall material, ordinary clay tiles still dominate. Although there are many shortcomings of ordinary clay brick, but because of low prices, simple process, design and construction technology is mature and people use inertia and other reasons, ordinary clay brick in the future for a long period of time, especially in rural areas, is still the main wall One of the material.