水泥穩(wěn)定碎石，簡稱水穩(wěn)，是將級配碎石作為骨料，采用一定劑量的水泥和適量的水進行拌和，經(jīng)攤鋪、突出、養(yǎng)生后形成的一種半剛性路面基層材料。它在道路結構中位于面層之下、土基之上，承擔著分散荷載、傳遞應力、保持路面平整的關鍵作用。水泥穩(wěn)定碎石一般適用于基層或底基層，厚度通常在15至22cm之間。

Cement stabilized crushed stone, abbreviated as water stabilized, is a semi-rigid pavement base material formed by mixing graded crushed stone as aggregate, using a certain amount of cement and an appropriate amount of water, and paving, rolling, and curing. It is located below the surface layer and above the soil foundation in the road structure, and plays a key role in dispersing loads, transmitting stresses, and maintaining a smooth road surface. Cement stabilized crushed stone is generally suitable for base or subbase, with a thickness typically between 15 and 22cm.

水泥穩(wěn)定碎石的施工是一項系統(tǒng)工程，涵蓋拌和、運輸、攤鋪、突出、養(yǎng)生等多個環(huán)節(jié)。

The construction of cement stabilized crushed stone is a systematic project, covering multiple stages such as mixing, transportation, paving, rolling, and curing.

拌和是第一步?；旌狭蠎诎韬驼炯邪柚?，確保水泥劑量和含水率的穩(wěn)定。非常佳產量應控制在合理范圍內，以保證拌和的均勻性。

Mixing is the first step. The mixture should be mixed centrally at the mixing station to ensure the stability of cement dosage and moisture content. The optimal yield should be controlled within a reasonable range to ensure the uniformity of mixing.

攤鋪是決定平整度的關鍵工序?，F(xiàn)代施工普遍采用攤鋪機分層攤鋪工藝，基層分兩層施工時均用攤鋪機攤鋪混合料。

Paving is the key process that determines the smoothness. Modern construction generally adopts the layered paving process of pavers, and when the base is constructed in two layers, the mixture is spread using pavers.

突出是保證密實度的核心環(huán)節(jié)?；旌狭蠎谔幱诨蚵源笥诜浅＜押繒r進行突出。采用“雙鋼輪+膠輪+振動”的組合突出方案可實現(xiàn)非常佳壓實效果，壓實度可達到98.5%，變異系數(shù)僅0.012。施工后各測點的壓實度應滿足不小于97%的要求，平整度應小于12mm。

Rolling is the core process to ensure compactness. The mixture should be compacted at or slightly above the optimum moisture content. The combination compaction scheme of "double steel wheels+rubber wheels+vibration" can achieve the best compaction effect, with a compaction degree of 98.5% and a coefficient of variation of only 0.012. After construction, the compaction degree of each measuring point should meet the requirement of not less than 97%, and the flatness should be less than 12mm.

養(yǎng)生是保證強度的非常后保障。養(yǎng)生溫度一般為20±2℃。養(yǎng)生結束后，還需通過鉆芯取樣檢驗基層的整體性。基于系統(tǒng)的施工質量控制和持續(xù)養(yǎng)護措施，基層7天回彈模量可達180MPa，彎沉值控制在0.35mm以內。

Health preservation is the ultimate guarantee for ensuring strength. The temperature for health preservation is generally 20 ± 2 ℃. After the health preservation is completed, it is necessary to test the integrity of the base layer through core sampling. Based on systematic construction quality control and continuous maintenance measures, the 7-day rebound modulus of the base layer can reach 180MPa, and the deflection value is controlled within 0.35mm.

從原材料的精挑細選到配合比的科學設計，從攤鋪突出的合理控制到養(yǎng)生的耐心等待，水泥穩(wěn)定碎石的每一個環(huán)節(jié)都凝聚著工程技術的嚴謹與智慧。正是這層看似普通的“碎石+水泥”組合，撐起了中國百萬公里公路的堅實脊梁。

From the meticulous selection of raw materials to the scientific design of mix proportions, from precise control of paving and compaction to patient waiting for health preservation, every aspect of cement stabilized crushed stone embodies the rigor and wisdom of engineering technology. It is this seemingly ordinary combination of gravel and cement that supports the solid backbone of China's million kilometer highway.