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水泥穩(wěn)定碎石的適用范圍與使用注意事項

來源：http://ywsun168.com/ 日期：2022-07-29

在經(jīng)過粉碎的或原來松散的土中，摻入足量的水泥和水，經(jīng)拌和得到的混合料在壓實和養(yǎng)生后，達(dá)到抗壓強(qiáng)度，稱為水泥穩(wěn)定碎石。關(guān)于水泥穩(wěn)定碎石的適用范圍與使用注意事項小編下文介紹。

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.

水泥穩(wěn)定碎石的適用范圍

Application scope of cement stabilized macadam

水泥穩(wěn)定碎石可適用于各級公路的基層和底基層，但水泥土不得用做二級和二級以上公路高級路面的基層。水泥穩(wěn)定中粒土和粗粒土用做基層時，水泥穩(wěn)定碎石的水泥劑量一般在3%左右，不超過6%。必要時，應(yīng)首先改善集料的級配，然后用水泥穩(wěn)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.

在只能使用水泥穩(wěn)定細(xì)粒土做基層時或水泥穩(wěn)定集料的強(qiáng)度要求明顯大于規(guī)定時，水泥劑量不受此限制。

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.

水泥穩(wěn)定碎石的使用注意事項

Precautions for the use of cement stabilized macadam

1、濟(jì)南水泥穩(wěn)定碎石用做底基層時，單個顆粒的大粒徑不應(yīng)超過375mm水泥穩(wěn)定碎石的顆粒組成應(yīng)在級配范圍內(nèi)，土的均勻系數(shù)應(yīng)大于5細(xì)粒土的液限不應(yīng)超過40%，塑性指數(shù)不應(yīng)超過17對于中粒土和粗粒土，如土中小于06mm的顆粒含量在30%以下，塑性指數(shù)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.
濟(jì)南水泥穩(wěn)定碎石

實際工作中，宜選用均勻系數(shù)大于10、塑性指數(shù)小于12的土。塑性指數(shù)大于17的土，宜采用石灰穩(wěn)定，或用水泥和石灰綜合穩(wěn)定。對于中粒土和粗粒土，宜采用表322中2號級配，但小于0075mm的顆粒含量和塑性指數(shù)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、水泥穩(wěn)定碎石用做基層時，單個顆粒的大粒徑不應(yīng)超過315mm水泥穩(wěn)定碎石的顆粒組成應(yīng)在級配范圍內(nèi)。

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、水泥穩(wěn)定碎石用做基層時，對所用的碎石或礫石，應(yīng)預(yù)先篩分成3~4個不同粒級，然后配合，使顆粒組成符合表322所列級配范圍。

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.

以上是小編介紹的水泥穩(wěn)定碎石的適用范圍與使用注意事項，希望對您有所幫助。了解更多相關(guān)的知識，歡迎繼續(xù)關(guān)注我們的網(wǎng)站http://ywsun168.com。

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 http://ywsun168.com 。

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