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水泥稳定碎石的适用范围与使用注意事项
来源：/ 日期：2022-07-29
在经过粉碎的或原来松散的土中，掺入足量的水泥和水，经拌和得到的混合料在压实和养生后，达到抗压强度，称为水泥稳定碎石。关于水泥稳定碎石的适用范围与使用注意事项小编下文介绍。
After crushing or the original loose soil, add enough cement and water, and the mixture obtained by mixing will reach the compressive strength after compaction and curing, which is called cement stabilized crushed stone. The application scope and precautions of cement stabilized macadam are introduced below.
水泥稳定碎石的适用范围
Application scope of cement stabilized macadam
水泥稳定碎石可适用于各级公路的基层和底基层，但水泥土不得用做二级和二级以上公路路面的基层。水泥稳定中粒土和粗粒土用做基层时，水泥稳定碎石的水泥剂量一般在3%左右，不超过6%。必要时，应改善集料的级配，然后用水泥稳定。
Cement stabilized macadam can be applied to the base and subbase of highways at all levels, but cement soil cannot be used as the base of high-grade pavement of secondary and above highways. When cement stabilized medium grained soil and coarse grained soil are used as base course, the cement dosage of cement stabilized crushed stone is generally about 3%, not more than 6%. If necessary, the gradation of aggregate should be improved first, and then stabilized with cement.
在只能使用水泥稳定细粒土做基层时或水泥稳定集料的强度要求明显大于规定时，水泥剂量不受此限制。
When only cement stabilized fine-grained soil can be used as the base or the strength requirements of cement stabilized aggregate are significantly greater than the regulations, the cement dosage is not subject to this restriction.
水泥稳定碎石的使用注意事项
Precautions for the use of cement stabilized macadam
1、济南水泥稳定碎石用做底基层时，单个颗粒的大粒径不应超过375mm水泥稳定碎石的颗粒组成应在级配范围内，土的均匀系数应大于5细粒土的液限不应超过40%，塑性指数不应超过17对于中粒土和粗粒土，如土中小于06mm的颗粒含量在30%以下，塑性指数可稍大。
1. When Jinan cement stabilized macadam is used as subbase, the large particle size of a single particle should not exceed 375mm, the particle composition of cement stabilized macadam should be within the grading range, the uniformity coefficient of soil should be greater than 5, the liquid limit of fine-grained soil should not exceed 40%, and the plasticity index should not exceed 17. For medium-grained soil and coarse-grained soil, if the content of particles less than 06mm in soil is less than 30%, the plasticity index can be slightly larger.
实际工作中，宜选用均匀系数大于10、塑性指数小于12的土。塑性指数大于17的土，宜采用石灰稳定，或用水泥和石灰综合稳定。对于中粒土和粗粒土，宜采用表322中2号级配，但小于0075mm的颗粒含量和塑性指数可不受限制。
In practical work, the soil with uniformity coefficient greater than 10 and plasticity index less than 12 should be selected. The soil with plasticity index greater than 17 should be stabilized with lime or cement and lime. For medium grained soil and coarse grained soil, the No. 2 grading in table 322 should be adopted, but the particle content and plasticity index less than 0075mm can be unlimited.
2、水泥稳定碎石用做基层时，单个颗粒的大粒径不应超过315mm水泥稳定碎石的颗粒组成应在级配范围内。
2. When cement stabilized macadam is used as base course, the large particle size of a single particle shall not exceed 315mm, and the particle composition of cement stabilized macadam shall be within the grading range.
3、水泥稳定碎石用做基层时，对所用的碎石或砾石，应预先筛分成3~4个不同粒级，然后配合，使颗粒组成符合表322所列级配范围。
3. When cement stabilized crushed stone is used as base course, the crushed stone or gravel used shall be screened into 3-4 different particle grades in advance, and then mixed to make the particle composition conform to the grading range listed in table 322.
The above is the scope of application and precautions of cement stabilized macadam introduced by the editor. I hope it will be helpful to you. For more relevant knowledge, please continue to pay attention to our website 。
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