Geosynthetic materials are a collective term for various products made from synthetic materials used in geotechnical and civil engineering construction. Because they are mainly used in geotechnical engineering, they are named "geosynthetic materials" after the word "geo" to distinguish them from natural materials. Testing scope: polyester staple fiber needle punched nonwoven geotextile, filament spunbonded nonwoven geotextile, staple fiber heat set nonwoven geotextile, filament machine woven geotextile, woven geotextile, composite reinforced geotextile Mechanical and mechanical properties of woven/nonwoven composite geotextile (filament woven/short fiber nonwoven composite geotextile, split film woven/short fiber nonwoven composite geotextile, short fiber nonwoven/filament woven/short fiber nonwoven composite geotextile) testing items: unit area mass, unit area mass deviation rate, thickness, thickness deviation rate, amplitude deviation rate, tensile fracture strength (longitudinal and transverse), fracture elongation rate, bursting strength Trapezoidal method tearing strength (transverse, transverse), acid and alkali resistance (strength retention rate, breaking elongation retention rate), abrasion resistance (strength loss rate), melting point, asphalt absorption, impregnation, effective pore diameter, aging resistance tensile strength retention rate, ultraviolet resistance, seepage resistance (hydrostatic pressure resistance, permeability coefficient), constant load elongation, equivalent pore diameter, dynamic perforation (cone fall) performance, friction coefficient, oxidation resistance Creep performance, splicing strength, peeling strength, longitude and latitude density deviation, vertical permeability coefficient, artificial climate aging fracture strength retention rate, artificial climate aging fracture elongation retention rate, flat water flow rate and other appearance quality: appearance defects (uneven fabric surface, creases, debris, edge defects, damage, etc.), etc
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