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目前国外路用新材料的开发和应用主要体现在以下3方面: ①针对现有材料在使用中的弊端,相应开发了各种改性剂、外掺剂、混合材料、代用材料,使材料向
At present, the development and application of new materials for foreign roads are mainly reflected in the following three aspects: ①Aiming at the disadvantages of the existing materials in use, various modifiers, external admixtures, mixed materials and substitute materials are developed correspondingly to make the materials