水泥稳定碎石（简称“水稳”）是公路基层的“骨架”，它的质量直接决定路面能用多少年。很多工地出问题，根源都在强度上——不是水泥不够，而是没抓住关键指标。

Cement stabilized crushed stone (abbreviated as "water stabilized") is the "skeleton" of the highway base, and its quality directly determines how many years the road surface can last. Many construction sites have problems, and the root cause is not due to insufficient cement, but rather the failure to grasp key indicators.

强度是唯一硬标准。 基层7天无侧限抗压强度要求5.0-6.5MPa，底基层≥4.0MPa。强度不够，光加水泥没用——水泥剂量超过4.5%后强度增长变缓，开裂风险反而大增。

Strength is the only hard standard. The 7-day unconfined compressive strength requirement for the base layer is 5.0-6.5MPa, and the sub base layer is ≥ 4.0MPa. Insufficient strength, adding cement alone is useless - when the cement dosage exceeds 4.5%, the strength growth slows down and the risk of cracking increases significantly.

材料控制是前提。 碎石建议分四档堆放：0-5mm石粉、5-10mm碎石、10-20mm碎石、20-25mm碎石。压碎值≤12.3%，针片状含量≤8.6%。水泥建议用42.5级缓凝水泥，初凝>3小时、终凝6-10小时。散装水泥到场后至少停放3天，安定性合格才能用。

Material control is a prerequisite. Crushed stones must be stacked in four levels: 0-5mm stone powder, 5-10mm crushed stones, 10-20mm crushed stones, and 20-25mm crushed stones. Crushing value ≤ 12.3%, needle like content ≤ 8.6%. Cement must use 42.5 grade retarding cement, with initial setting>3 hours and final setting 6-10 hours. Bulk cement must be parked for at least 3 days after arrival, and can only be used if its stability is qualified.

配合比分三步走。 目标配合比设计选级配、定掺量；生产配合比定料仓比例、延迟时间和标定曲线；施工参数确定阶段验证强度指标。

Follow the score in three steps. Selection of gradation and dosage for target mix design; Production mix ratio, silo ratio, delay time, and calibration curve; Verify strength indicators during the construction parameter determination phase.

压实度决定寿命。 基层压实度代表值≥98%，底基层≥96%。采用“双钢轮+胶轮+振动”组合突出，压实度可达98.5%。混合料建议在非常佳含水率时突出。

The compaction degree determines the lifespan. The representative value of the compaction degree of the base layer is ≥ 98%, and the sub base layer is ≥ 96%. The combination of "double steel wheels+rubber wheels+vibration" is used for compaction, and the compaction degree can reach 98.5%. The mixture must be compacted at the optimal moisture content.

大厚度一次摊铺成趋势。 36-39.8cm厚水稳底基层一次摊铺压实已成熟应用，效率高、层间结合好。山东已发布《公路水泥稳定碎石基层大厚度双层连续摊铺施工技术规范》（DB37/T 4958—2025），2026年1月15日起实施。

The trend of spreading a large thickness at once. The one-time paving and compaction of 36-39.8cm thick water stable subgrade has been maturely applied, with high efficiency and good interlayer bonding. Shandong has released the "Technical Specification for Large Thickness Double Layer Continuous Paving Construction of Highway Cement Stabilized Crushed Stone Base" (DB37/T 4958-2025), which will be implemented from January 15, 2026.