瀝青混凝土是一種人工配料攪拌而成的，里面含有礦料、碎石或軋碎礫石、石屑或砂、礦粉等，按照合理的比例搭配，在嚴(yán)格的控制下攪拌混合而成。那么，瀝青混凝土是如何生產(chǎn)的呢？瀝青混凝土特點(diǎn)是什么呢？接下來(lái)，我們就一起來(lái)了解關(guān)于建筑材料瀝青混凝土吧！

　　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，為何能很舒適的通行，這是因?yàn)槁访媸褂脼r青混凝土原材料，瀝青混凝土表面有很好的抗滑性。不僅有這么好的磨擦系數(shù)，而且它表面也有很深的構(gòu)造，可減低噪音和水飄、濺。

　　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，有研究數(shù)據(jù)調(diào)查顯示瀝青面層的抗滑性，是由微觀構(gòu)造和宏觀構(gòu)造組成，也是說(shuō)這種構(gòu)造來(lái)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.

　　在中國(guó)80年代就開(kāi)始有修建高速公路，那時(shí)的瀝青面層的結(jié)構(gòu)，是屬于Ⅰ型瀝青混凝土，空隙率3%～6%，透水性小、耐久性好，摩擦系數(shù)也能到達(dá)要求，可是它的構(gòu)造深度較小，沒(méi)有達(dá)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.

　　而現(xiàn)代的是Ⅱ型瀝青混凝土空隙率6%～10%，表面構(gòu)造深，抗變形能力較強(qiáng)，但其透水性、耐久性較差，所以現(xiàn)在還在繼續(xù)對(duì)瀝青混凝土面層被加以研究。

　　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.

　　多碎石瀝青的材料大多數(shù)是用碎石形成骨架，用瀝青砂膠填充骨架中的孔隙，與骨架膠合后形成一種瀝青混合料形式。具體組成比例是：粗集料含量69%～78%，礦粉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%.

　　且這樣的比例，經(jīng)過(guò)多條高速公路的實(shí)踐證明，多碎石瀝青混凝土面層既能提供較深的表面構(gòu)造，又具有傳統(tǒng)Ⅰ型瀝青混凝土那樣的較小空隙及較小透水性，同時(shí)又具有較好的抗形變能力(動(dòng)穩(wěn)定度較高)。換言之，“多碎石瀝青混凝土既具有傳統(tǒng)Ⅰ型瀝青混凝土的優(yōu)點(diǎn)，又具有Ⅱ型瀝青混凝土的優(yōu)點(diǎn)，同時(shí)又避免了兩種傳統(tǒng)瀝青混凝土結(jié)構(gòu)形式的不足?！?/p>

　　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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