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1、整体外观

1. Overall appearance

如今市面上比较残次的透水砖外表都比较粗糙，孔隙十分大。这种透水砖使用寿命比较低，因为大孔隙透水砖的突出“特点”就是容易被尘埃堵死，而一旦被尘埃堵死的透水砖就失去了透水砖的效果与价值了。

Nowadays, the relatively inferior permeable bricks on the market have a rough surface and very large pores. This type of permeable brick has a relatively low service life because the prominent feature of large pore permeable bricks is that they are easily blocked by dust, and once blocked by dust, permeable bricks lose their effectiveness and value.

2、颗粒分布

2. Particle distribution

透水砖的透水原理是通过相互包裹的颗粒缝隙透水，为保证透水砖的透水量及透水时效性，颗粒的粒径搭配要合理，分布要均匀。劣质透水砖为了降低成本，原材材料中掺入了大量细粉状的黏土和煤灰，其表面、底部、侧面都可以看到颗粒被黏接物粘结，颗粒不明显。

The permeability principle of permeable bricks is to penetrate through the gaps between particles that wrap around each other. To ensure the permeability and timeliness of permeable bricks, the particle size combination should be reasonable and the distribution should be uniform. In order to reduce costs, low-quality permeable bricks are mixed with a large amount of fine powder clay and coal ash in the raw materials. The particles can be seen to be bonded by the adhesive on the surface, bottom, and sides, and the particles are not obvious.

3、检验标准

3. Inspection standards

国家对透水砖的透水时效、透水速率和力学性能上其实都有严格的规定和要求。

The country actually has strict regulations and requirements for the permeability time, permeability rate, and mechanical properties of permeable bricks.

我们在选购时，可以让厂家出示该产品的数据检验报告，看透水砖的性能指标是否达到国家标准。请谨记：这3个指标是衡量透水砖质量优劣的“试金石”。

When making a purchase, we can ask the manufacturer to provide a data inspection report of the product to see if the performance indicators of the permeable bricks meet national standards. Please remember that these three indicators are the touchstones for measuring the quality of permeable bricks.

4、批量质量

4. Batch quality

透水砖的质量不能只看单个产品的质量，要看批量产品的质量。劣质透水砖由于厂家工艺管理、原材料控制等把控不严的原因，质量波动会比较大，特别是规格、色差、强度、透水性等容易出现大的波动，从而影响产品质量的稳定性。

The quality of permeable bricks should not only depend on the quality of individual products, but also on the quality of batch products. Due to the lack of strict control over the manufacturer's process management and raw material control, low-quality permeable bricks can experience significant quality fluctuations, especially in terms of specifications, color differences, strength, and permeability, which can affect the stability of product quality.