沥青砼俗称沥青混凝土，经人工选配具有一定级配组成的矿料（碎石或轧碎砾石、石屑或砂、矿粉等）与一定比例的路用沥青材料，在严格控制条件下拌制而成的混合料。

Asphalt concrete, commonly known as asphalt concrete, is a mixture made by manually mixing mineral materials (crushed stone or crushed gravel, stone chips or sand, mineral powder, etc.) with a certain proportion of road asphalt materials under strictly controlled conditions.

沥青砼按所用结合料不同，可分为石油沥青的和煤沥青的两大类；有些或地区亦有采用或掺用天然沥青拌制的。

According to the different binders used, asphalt concrete can be divided into two categories: petroleum asphalt and coal asphalt; In some countries or regions, natural asphalt is also used or mixed.

按所用集料品种不同，可分为碎石的、砾石的、砂质的、矿渣的数类，以碎石采用为普遍。

Depending on the type of aggregate used, it can be divided into several categories: crushed stone, gravel, sandy, and slag, with crushed stone being the most commonly used.

按混合料大颗粒尺寸不同,可分为粗粒(35～40毫米以下)、中粒（20～25毫米以下）、细粒(10～15毫米以下)、砂粒(5～7毫米以下)等数类。

Depending on the size of the large particles of the mixture, it can be divided into coarse particles (35 to 40 mm or less), medium particles (20 to 25 mm or less), fine particles (10 to 15 mm or less), and sand particles (5 to 7 mm or less).

济南沥青砼按混合料的密实程度不同，可分为密级配、半开级配和开级配和间断级配。其中热拌热铺的密级配碎石混合料经久耐用，强度高，整体性好，是修筑沥青路面的代表性材料，应用得广。

Jinan asphalt concrete can be divided into dense gradation, semi open gradation, open gradation, and intermittent gradation according to the different compactness of the mixture. The dense graded crushed stone mixture of hot mix and hot paving is durable, has high strength, and has good integrity. It is a representative material for building high-grade asphalt pavement, and is widely used.

各国对沥青混凝土制订有不同的规范，制定的热拌热铺沥青混合料技术规范，以空隙率10%及以下者称为沥青混凝土，又细分为Ⅰ型和Ⅱ型，Ⅰ型的孔隙率为3～6%（行人道路2%-6%）；Ⅱ型为4～10%；空隙率10%以上者为半开级配，代表类型有沥青稳定碎石；压实后孔隙率为15%以上为开级配型，代表类型有沥青磨耗层混合料；对于间断级配沥青混合料，指级配中缺少一个或者几个档次而形成的级配间断的混合料，代表类型有沥青马蹄脂碎石（SMA）。沥青混凝土物理力学指标有稳定度、流值和孔隙率等。

Various countries have different specifications for asphalt concrete. The technical specifications for hot mix and hot paving asphalt mixtures formulated in China refer to those with a void ratio of 10% or less as asphalt concrete, and are further subdivided into Type I and Type II, with a void ratio of 3-6% for pedestrian roads; Type II: 4-10%; Those with a void ratio of more than 10% are semi open graded, and the representative type is asphalt stabilized crushed stone; After compaction, the mixture with a porosity of more than 15% is of open graded type, and the representative type is asphalt wearing course mixture; For discontinuous graded asphalt mixture, it refers to a mixture that lacks one or several grades in the gradation and is formed with discontinuous gradation. The representative type is asphalt horseshoe macadam (SMA). The physical and mechanical indexes of asphalt concrete include stability, flow value, porosity, etc.

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