沥青混凝土是一种人工配料搅拌而成的，里面含有矿料、碎石或轧碎砾石、石屑或砂、矿粉等，按照合理的比例搭配，在严格的控制下搅拌混合而成。那么，沥青混凝土是如何生产的呢？沥青混凝土特点是什么呢？接下来，我们就一起来了解关于建筑材料沥青混凝土吧！

　　Asphalt concrete is a type of artificial batching and mixing, which contains mineral materials, crushed stones or crushed stones, stone chips or sand, mineral powder, etc., mixed in a reasonable proportion under strict control. So, how is asphalt concrete produced? What are the characteristics of asphalt concrete? Next, let's learn about building materials such as asphalt concrete together!

　　在一些流量大的高速公路上，为何能很舒适的通行，这是因为路面使用沥青混凝土原材料，沥青混凝土表面有很好的抗滑性。不仅有这么好的磨擦系数，而且它表面也有很深的构造，可减低噪音和水飘、溅。

　　On some highways with high traffic volume, why can it pass comfortably? This is because the road surface uses asphalt concrete raw materials, and the asphalt concrete surface has good skid resistance. Not only does it have such a good friction coefficient, but its surface also has deep structures that can reduce noise and water splashing.

　　因此，有研究数据调查显示沥青面层的抗滑性，是由微观构造和宏观构造组成，也是说这种构造来源于混合料的配合比例。

　　Therefore, research data shows that the skid resistance of asphalt surface layer is composed of microstructure and macrostructure, which also means that this structure comes from the mix proportion of the mixture.

　　在中国80年代就开始有修建高速公路，那时的沥青面层的结构，是属于Ⅰ型沥青混凝土，空隙率3%～6%，透水性小、耐久性好，摩擦系数也能到达要求，可是它的构造深度较小，没有达到要求。

　　The construction of highways began in China in the 1980s. At that time, the structure of the asphalt surface layer belonged to type I asphalt concrete, with a porosity of 3% to 6%, low permeability, good durability, and a friction coefficient that could meet the requirements. However, its structural depth was relatively small and did not meet the requirements.

　　而现代的是Ⅱ型沥青混凝土空隙率6%～10%，表面构造深，抗变形能力较强，但其透水性、耐久性较差，所以现在还在继续对沥青混凝土面层被加以研究。

　　However, modern type II asphalt concrete has a porosity of 6% to 10%, a deep surface structure, and strong deformation resistance, but its permeability and durability are poor. Therefore, research on asphalt concrete surface layers is still ongoing.

　　多碎石沥青的材料大多数是用碎石形成骨架，用沥青砂胶填充骨架中的孔隙，与骨架胶合后形成一种沥青混合料形式。具体组成比例是：粗集料含量69%～78%，矿粉6%～10%，油石比5%左右。

　　Most materials of multi crushed stone asphalt are formed by using crushed stones to form a skeleton, filling the pores in the skeleton with asphalt sand glue, and bonding with the skeleton to form a form of asphalt mixture. The specific composition ratio is: coarse aggregate content of 69% to 78%, mineral powder of 6% to 10%, and oil stone ratio of about 5%.

　　且这样的比例，经过多条高速公路的实践证明，多碎石沥青混凝土面层既能提供较深的表面构造，又具有传统Ⅰ型沥青混凝土那样的较小空隙及较小透水性，同时又具有较好的抗形变能力(动稳定度较高)。换言之，“多碎石沥青混凝土既具有传统Ⅰ型沥青混凝土的优点，又具有Ⅱ型沥青混凝土的优点，同时又避免了两种传统沥青混凝土结构形式的不足。”

　　And this ratio has been proven through the practice of multiple highways, that the multi crushed stone asphalt concrete surface layer can provide a deeper surface structure, as well as smaller voids and permeability like traditional Type I asphalt concrete, while also having good deformation resistance (high dynamic stability). In other words, "Multi crushed stone asphalt concrete has both the advantages of traditional Type I asphalt concrete and Type II asphalt concrete, while avoiding the shortcomings of the two traditional asphalt concrete structural forms

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