水泥稳定碎石是公路基层的主力材料，说白了就是用水泥把碎石“粘”成一块板，撑住上面的沥青面层。这条路能用几年、会不会提前开裂下沉，基层质量占了七成以上的权重。济南做水稳的厂家不少，但“能供货”和“供得稳”是两回事。

Cement stabilized crushed stone is the main material for highway subgrade, which means using cement to "stick" the crushed stone into a board and support the asphalt surface layer on top. How many years can this road last and will it crack and sink prematurely? Grassroots quality accounts for more than 70% of the weight. There are many manufacturers in Jinan who specialize in water stability, but "being able to supply" and "having a stable supply" are two different things.

先搞懂强度等级，别拿低配当标配。

First understand the strength level, don't use low-end as standard.

水泥稳定碎石的强度用7天无侧限抗压强度表示，单位是MPa。城市主干路、重交通道路的基层，通常要求3.0到4.0MPa；次干路和支路可以降到2.0到2.5MPa；底基层要求更低，一般在1.5到2.0MPa。强度不是越高越好，等级选高了，水泥用量大、收缩开裂风险跟着涨；选低了，承载能力不够，重车一压就碎。选型第一件事，是搞清楚你的路是什么等级、跑什么车。

The strength of cement stabilized crushed stone is expressed in MPa as the 7-day unconfined compressive strength. The grassroots of urban main roads and heavy transportation roads usually require 3.0 to 4.0 MPa; The secondary and branch roads can be reduced to 2.0 to 2.5 MPa; The requirements for the subgrade layer are lower, generally ranging from 1.5 to 2.0 MPa. The higher the strength, the better. Choosing a higher grade increases the risk of shrinkage and cracking due to the larger amount of cement used; The selection is too low, the carrying capacity is not enough, and the heavy vehicle will break when pressed. The first thing to do when choosing a car is to figure out what level of road you are on and what kind of car you are driving.

级配是灵魂，不是“碎石随便拌拌”。

Grading is the soul, not a random mix of crushed stones.

水泥稳定碎石的骨架靠级配撑起来。粗集料、细集料、填料的比例建议符合规范要求的级配曲线，非常大粒径一般控制在31.5mm或37.5mm以内。级配断了档，要么空隙率太大、强度上不去，要么细料太多、干缩开裂。济南本地厂家如果自有碎石生产线，级配稳定性比外购碎石再拌合的厂家高出一截。

The skeleton of cement stabilized crushed stone is supported by gradation. The proportion of coarse aggregate, fine aggregate, and filler must comply with the grading curve required by the specifications, and the maximum particle size is generally controlled within 31.5mm or 37.5mm. If the grading is broken, either the porosity is too high and the strength cannot be improved, or there is too much fine material and drying shrinkage cracking. If local manufacturers in Jinan have their own gravel production lines, the grading stability is slightly higher than that of manufacturers who purchase gravel and mix it externally.

水泥剂量有红线，不是越多越好。

There is a red line for cement dosage, not the more the better.

水泥剂量一般在3%到6%之间。低于3%，强度不够；高于6%，收缩变形急剧提升，路面容易产生干缩裂缝，裂缝反射到沥青面层就是一条条“龟裂”。永诚广建公路材料这类有拌合站的企业，计量系统精度直接决定水泥剂量的稳定性——计量飘了，这一段路和那一段路的质量就是两个样。

The cement dosage is generally between 3% and 6%. Less than 3%, insufficient strength; Above 6%, the shrinkage deformation increases sharply, and the road surface is prone to dry shrinkage cracks, which reflect onto the asphalt surface layer as "cracks". For enterprises such as Yongcheng Guangjian Highway Materials that have mixing stations, the accuracy of the measurement system directly determines the stability of the cement dosage - if the measurement drifts, the quality of this section of road and that section of road will be the same.

含水量和压实度，施工现场非常容易出问题的地方。

The moisture content and compaction degree are the most prone areas to problems on the construction site.

拌合时的含水量要略高于非常佳含水量，补偿运输和摊铺过程中的蒸发。但含水量高了，突出时弹簧、起皮；低了，压不密实。压实度要求通常不低于98%（重型击实标准），这是检验基层质量非常硬的指标。拌合站到工地的运距、覆盖措施、摊铺突出的衔接速度，每一个环节都在影响非常终的压实效果。

The moisture content during mixing should be slightly higher than the optimal moisture content to compensate for evaporation during transportation and paving. But if the moisture content is too high, it may cause springs and peeling during rolling; It's too low to press tightly. The compaction degree requirement is usually not less than 98% (heavy compaction standard), which is the hardest indicator for testing the quality of the base layer. The transportation distance from the mixing station to the construction site, covering measures, and the connection speed of paving and rolling all affect the final compaction effect.

选水稳厂家，盯三条。

Choose a water stable manufacturer and focus on three aspects.

一看有没有自有拌合站和碎石线，源头可控，级配和剂量才稳。二看资质和检测能力，能不能出完整的配合比报告和7天强度检测数据。三看本地工程案例，济南哪些路用了他们的料、跑了几年什么状况，比明显宣传都实在。

Check if there is a self owned mixing station and gravel line, the source can be controlled, and the grading and dosage are stable. Secondly, check the qualifications and testing capabilities to see if a complete mix proportion report and 7-day strength testing data can be provided. Looking at local engineering cases, which roads in Jinan used their materials and what conditions they have been running for several years is more realistic than any publicity.

水泥稳定碎石是路面的“脊梁骨”，埋在地下看不见，但路面能撑几年，它说了算。强度等级选对、级配控稳、剂量守住、压实到位——这四条做到了，路才真正经得起跑。

Cement stabilized macadam is the "backbone" of the road surface. It can not be seen when buried underground, but it is the the final say of the road surface that can last for several years. Only when the strength level is selected correctly, the grading is controlled steadily, the dosage is maintained, and the compaction is in place, can the road truly pass the starting line.

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This article is a friendly contribution from Jinan Cement Stabilized Crushed Stone For more information, please click: http://www.ycgjglcl.com We will provide detailed answers to your questions. You are welcome to log in to our website and leave a message