二灰碎石基层若干技术问题的探讨.rar免费下载-建虎网

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二灰碎石基层若干技术问题的探讨.rar

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二灰碎石基层若干技术问题的探讨
　
摘要：本文针对二灰碎石基层的集料最大粒径、级配及混合料配合比计算、
压实度质量控制4个方面问题进行了探讨，对现行公路基层施工技术规范某些
规定提出自己的见解，可供有关工程技术人员参考。
关键词：二灰碎石基层技术问题探讨
　　二灰碎石基层即为石灰、粉煤灰稳定粒料基层，一般也叫二灰结石或三
渣基层。它是在粒料中掺入适量的石灰和粉煤灰，按一定的技术要求，将其
拌和均匀摊铺的混合料在最佳含水量时压实，经养生成型的一种路面基层。
其中石灰和粉煤灰为胶结材料，粒料起骨架作用。二灰碎石基层属于半刚性
基层类型，具有明显的水硬性、缓凝性、板体性、一定的抗裂性，但抗磨
差，强度形成受温度和湿度影响很大。
　　二灰碎石基层所用材料来源广泛，可就地取材，且施工方便，强度高。
形成板体后，具有类似贫混凝土的性质，水稳性、抗裂性也较好。由于这些
优点，使二灰碎石基层得到广泛应用。近十年来，已成为我省高等级公路的
必选路面基层类型。
　　尽管二灰碎石基层的应用已有较长时间，也有许多研究，但直到《公路
路面基层施工技术规范

Lime Crushed Stone of a number of technical issues

Abstract: In this paper, lime Macadam aggregate maximum size, size distribution and mixture ratio calculated
Compaction quality control four aspects were discussed, existing in some road base construction specifications
Provisions of their views, are available for reference by engineers. 
Key words: gray gravel technical problems
Lime Crushed Stone shall be lime, fly ash stabilized grain base, generally called two or three gray stone
Basic slag. It is mixed with the aggregate amount of lime and fly ash, according to certain technical requirements, to
Mixing uniform paving mixture compacted at optimum water content, forming a road through grass-roots health.
Which lime and fly ash as cement materials, aggregates from the skeleton. Lime Crushed Stone semirigid
Primary type, with clear water, hard, slow setting of, board of, some cracking, but wear
Poor strength of the formation of temperature and humidity greatly.
Primary lime used in a wide range of sources can be local materials and easy construction, high strength.
After the formation of plate body has a similar nature of lean concrete, water stability, cracking resistance is also good. As these
Advantages, so that the grassroots of lime is widely used. The last decade, has become the province's highway
Required Pavement type. 
Although the primary application of lime has been a long time, there are many studies, but until the "road
Pavement Construction Specifications

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