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通过对国内外沥青混凝土路面适宜集料勘察方法的调研,得出集料压碎值与抗破碎性能有良好的相关关系,针片状含量主要依赖其生产和加工方式;影响颗粒形状的操作因素包括:破碎机类型,选择性筛分,给料粒径组成等;目前集料生产比较合适的做法是:一破用国产颚式破碎机,二破用圆锥式破碎机,三破用进口“石打石”碎石机。比较科学的集料勘察方法是:对普查合格的料场,根据塘口位置、运输条件、料场的生产管理等,重点对其集料进行比选,综合比较推荐可选用的料场。对集料供应商在分级的基础上实行准入证制度。料场调查应充分重视发掘潜在的储量丰富、工艺先进的料场。集料加工厂建厂的关键是原料块石、生产过程各环节、成品集料的质量保证。
Through the investigation of suitable aggregate survey methods for asphalt concrete pavement at home and abroad, the crushing value of aggregates has a good correlation with the anti-crushing performance. The content of needle flake mainly depends on its production and processing methods. The operating factors Including: type of crusher, selective screening, feed particle size composition; the current aggregate production more appropriate approach is: a broken domestic jaw crusher, two broken cone crusher, three broken imports Stone stone stone crushing machine. The more scientific method of aggregate survey is as follows: According to the locations of ponds, transportation conditions and the production management of the material yard, we select and compare the aggregates according to the requirements of the census sites. Aggregate suppliers in the grading based on the implementation of access control system. The yard investigation should give full attention to discovering potential stockpile with rich reserves and advanced technology. Aggregate processing plant construction is the key to building blocks of raw materials, all aspects of the production process, finished product quality assurance of aggregates.