以2.36mm為界！濟南瀝青料，3大核心原料決定路面品質

　　Divided by 2.36mm! Jinan asphalt material, three core raw materials determine the quality of road surface

　　瀝青路面的耐用度，根源在瀝青料的原料搭配——看似簡單的混合料，實則由瀝青、集料、礦粉三大核心原料精準配比而成，其中瀝青主導性能，集料撐起強度，礦粉筑牢粘合，三者缺一不可。濟南作為基建重鎮(zhèn)，本地瀝青料生產嚴格遵循行業(yè)規(guī)范，適配不同道路等級與氣候工況，今天結合實測數據，嘮透濟南瀝青料的三大核心原料、選型標準及配比邏輯，幫大家讀懂瀝青料的品質密碼。

　　The durability of asphalt pavement is rooted in the raw material combination of asphalt material - seemingly simple mixture, which is actually made up of three core raw materials: asphalt, aggregate, and mineral powder. Among them, asphalt dominates the performance, aggregate supports the strength, and mineral powder builds a strong bond. All three are indispensable. As a key infrastructure city, Jinan strictly follows industry standards in the production of local asphalt materials, adapting to different road grades and climate conditions. Today, based on measured data, we will explain the three core raw materials, selection standards, and proportioning logic of Jinan asphalt materials, helping everyone understand the quality code of asphalt materials.

　　瀝青是濟南瀝青料的“核心靈魂”，占比4.5%-6.0%，其性能直接決定混合料的整體表現，也是區(qū)分瀝青料等級的關鍵。濟南市場常用三類瀝青：石油瀝青適配80%的市政道路與鄉(xiāng)村公路，性價比突出，針入度控制在60-80（0.1mm），低溫抗裂性達標-10℃，適配濟南四季分明的氣候；改性瀝青（多為SBS改性）主打高強度、抗車轍，高溫穩(wěn)定性提升40%，動穩(wěn)定度≥2800次/mm，適配高速公路、重載路段，占濟南高端瀝青料用量的35%；乳化瀝青主打冷態(tài)施工，環(huán)保節(jié)能，滲透性強，多用于透層、粘層及路面預防性養(yǎng)護，濟南舊路翻新項目中使用率達60%。

　　Asphalt is the "core soul" of Jinan asphalt material, accounting for 4.5% -6.0%. Its performance directly determines the overall performance of the mixture and is also the key to distinguishing the grade of asphalt material. Three types of asphalt are commonly used in the Jinan market: petroleum asphalt is suitable for 80% of municipal and rural roads, with outstanding cost-effectiveness. The penetration rate is controlled at 60-80 (0.1mm), and the low-temperature crack resistance meets the standard of -10 ℃. It is suitable for the distinct four seasons of Jinan's climate; Modified asphalt (mostly SBS modified) focuses on high strength and anti rutting, with a 40% increase in high-temperature stability and a dynamic stability of ≥ 2800 times/mm. It is suitable for highways and heavy-duty sections, accounting for 35% of the high-end asphalt consumption in Jinan; Emulsified asphalt is mainly used for cold construction, which is environmentally friendly, energy-saving, and has strong permeability. It is mostly used for permeable layers, adhesive layers, and preventive maintenance of road surfaces. The usage rate in the renovation project of old roads in Jinan has reached 60%.

　　集料是瀝青料的“骨架”，占比超90%，以2.36mm為明確分界線，分為粗集料與細集料，兩者搭配決定路面強度與耐磨性。濟南瀝青料選用的粗集料，優(yōu)先采用堿性碎石，與瀝青粘附性達4級以上，抗壓強度≥120MPa，耐磨性達標磨耗值≤30%，形狀接近立方體，針片狀顆粒含量≤15%，潔凈無分化、無雜質，有效避免路面早期松散、破損。細集料可選用天然砂、機制砂或石屑，濟南本地多采用機制砂，級配通過率符合規(guī)范要求，含泥量≤3%，確保與瀝青、礦粉充分粘合，提升混合料密實度。

　　Aggregate is the "skeleton" of asphalt, accounting for over 90%. It is divided into coarse aggregate and fine aggregate with a clear boundary of 2.36mm, and the combination of the two determines the strength and wear resistance of the pavement. The coarse aggregate selected for Jinan asphalt material is preferably alkaline crushed stone, with adhesion to asphalt of level 4 or above, compressive strength ≥ 120MPa, wear resistance standard wear value ≤ 30%, shape close to a cube, needle like particle content ≤ 15%, clean without differentiation or impurities, effectively avoiding early loosening and damage of the road surface. Fine aggregate can be selected from natural sand, machine-made sand or stone chips. Mechanized sand is commonly used locally in Jinan, with a gradation pass rate that meets the specification requirements and a mud content of ≤ 3%, ensuring sufficient adhesion with asphalt and mineral powder and improving the compactness of the mixture.

　　礦粉是瀝青料的“粘合紐帶”，占比3%-5%，雖用量少但作用關鍵，能與瀝青形成高粘接力的瀝青膠漿，將粗細集料牢牢粘合為整體。濟南瀝青料選用的礦粉，優(yōu)先采用石灰?guī)r或巖漿巖中的強基性巖加工而成，滲水性達標，比表面積≥3000cm?/g，含水量≤1%，無雜質、無結塊，確保膠漿粘合強度，讓瀝青料抗壓、抗剪切能力提升25%，有效減少車轍、裂縫等病害，延長路面使用壽命。

　　Mineral powder is the "bonding bond" of asphalt material, accounting for 3% -5%. Although it is used in small quantities, its role is crucial. It can form a high adhesion asphalt slurry with asphalt, firmly bonding coarse and fine aggregates into a whole. The mineral powder selected for Jinan asphalt material is preferably processed from strong basic rocks in limestone or igneous rock, with water permeability meeting standards, a specific surface area of ≥ 3000cm ?/g, a water content of ≤ 1%, no impurities or clumps, ensuring the bonding strength of the binder, increasing the compressive and shear resistance of the asphalt material by 25%, effectively reducing diseases such as ruts and cracks, and extending the service life of the road surface.

　　濟南瀝青料的品質優(yōu)勢，源于精準配比與嚴格選材。本地正規(guī)廠家會根據道路等級、施工條件定制配方：高速路面采用改性瀝青+優(yōu)質堿性粗集料，油石比控制在5.0%-5.5%，空隙率3%-5%，確保重載通行下不易變形；市政道路采用石油瀝青+常規(guī)集料，油石比4.5%-5.0%，兼顧性價比與耐用性；鄉(xiāng)村公路可靈活調整配比，降低成本的同時保障基礎強度。實測顯示，濟南合規(guī)瀝青料制成的路面，使用壽命比劣質原料瀝青料長3倍以上，早期病害發(fā)生率低于5%。

　　The quality advantage of Jinan asphalt material comes from precise proportioning and strict material selection. Local legitimate manufacturers will customize formulas based on road grades and construction conditions: modified asphalt and high-quality alkaline coarse aggregate are used for high-speed road surfaces, with an oil stone ratio controlled at 5.0% -5.5% and a void ratio of 3% -5%, ensuring that deformation is not easily caused under heavy traffic; Municipal roads use petroleum asphalt and conventional aggregates, with an oil stone ratio of 4.5% -5.0%, balancing cost-effectiveness and durability; Rural roads can be flexibly adjusted to reduce costs while ensuring basic strength. Actual testing shows that the pavement made of compliant asphalt in Jinan has a service life more than three times longer than that of inferior raw asphalt, and the early disease incidence rate is less than 5%.

　　原料選型的細節(jié)把控，是濟南瀝青料的品質底氣。粗集料需經過3道篩選工序，去除雜質與不合格顆粒，合格率達100%；細集料烘干至含水率≤0.5%，避免水分影響粘合效果；瀝青進場前需檢測針入度、延度等核心指標，不合格原料堅決拒收。此外，濟南廠家會根據氣候優(yōu)化原料搭配，冬季側重提升瀝青低溫抗裂性，夏季強化集料耐磨性，適配本地氣候工況。

　　The detailed control of raw material selection is the quality assurance of Jinan asphalt material. Coarse aggregate needs to undergo three screening processes to remove impurities and unqualified particles, with a pass rate of 100%; Dry the fine aggregate to a moisture content of ≤ 0.5% to avoid moisture affecting the bonding effect; Before asphalt enters the site, core indicators such as penetration and elongation must be tested, and unqualified raw materials must be rejected resolutely. In addition, Jinan manufacturers will optimize the raw material mix according to the climate, focusing on improving the low-temperature crack resistance of asphalt in winter and strengthening the wear resistance of aggregates in summer to adapt to local climate conditions.

　　選濟南瀝青料，核心看三大原料的選型是否達標：一是瀝青類型匹配道路等級，二是粗集料強度與粘附性合格、細集料級配合規(guī)，三是礦粉材質與細度達標。劣質瀝青料多選用低標號瀝青、含泥量超標的集料及不合格礦粉，雖價格低30%，但路面通車后1-2年就會出現泛油、坑槽等病害，后期修復成本是優(yōu)質瀝青料的2倍以上。

　　When choosing Jinan asphalt material, the key is to check whether the selection of the three major raw materials meets the standards: first, whether the asphalt type matches the road grade; second, whether the strength and adhesion of coarse aggregates are qualified, and whether the fine aggregate grade meets the requirements; third, whether the mineral powder material and fineness meet the standards. Poor quality asphalt materials often use low-grade asphalt, aggregates with excessive mud content, and unqualified mineral powder. Although the price is 30% lower, the road surface will suffer from diseases such as oil bleeding and potholes 1-2 years after opening, and the later repair cost is more than twice that of high-quality asphalt materials.

　　總結來說，濟南瀝青料的品質，藏在2.36mm的集料分界、4.5%-6.0%的瀝青占比、3%-5%的礦粉配比中。三大核心原料精準搭配、嚴格篩選，才能制成適配不同場景的優(yōu)質瀝青料，筑牢濟南公路建設的品質根基。無論是高速公路、市政道路還是鄉(xiāng)村公路，選對原料合規(guī)、配比科學的濟南瀝青料，才能實現路面耐用、少維修，兼顧性價比與長效性。

　　In summary, the quality of Jinan asphalt material lies in the 2.36mm aggregate boundary, 4.5% -6.0% asphalt proportion, and 3% -5% mineral powder ratio. The precise combination and strict screening of the three core raw materials are necessary to produce high-quality asphalt materials that are suitable for different scenarios, laying a solid foundation for the quality of Jinan's highway construction. Whether it is highways, municipal roads, or rural roads, selecting Jinan asphalt materials with compliant raw materials and scientific proportioning is the key to achieving road durability, minimal maintenance, cost-effectiveness, and long-term effectiveness.