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The base surface must be cleaned according to the design requirements, which is the key to ensure the anti-seepage effect, especially the debris such as sharp stones and tree roots should be completely removed. Use a tamper or tamper to tamp it tightly to make it compact and level.
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The historical development of geotextiles
The application of geotextiles abroad began as early as the 1960s. The United States is the country with the largest consumption of geotextiles in the world. In the early 1990s, its annual consumption was more than 300 million m2, and the consumption reached 700 million m2. Geotextiles in Europe and Japan have also developed rapidly. The annual consumption of geotextiles in Europe is also about 400 million m2, of which spunbond nonwovens account for about 60% of nonwoven geotextiles; Cloth applications have grown significantly. Among Japanese non-woven geotextiles, the spunbond method is the most used, accounting for about 60% of the total non-woven geotextiles, and mainly PET spunbond fabrics.
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