瀝青砼俗稱瀝青混凝土，經(jīng)人工選配具有一定級(jí)配組成的礦料（碎石或軋碎礫石、石屑或砂、礦粉等）與一定比例的路用瀝青材料，在嚴(yán)格控制條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.

瀝青砼按所用結(jié)合料不同，可分為石油瀝青的和煤瀝青的兩大類；有些國家或地區(qū)亦有采用或摻用天然瀝青拌制的。

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.

按所用集料品種不同，可分為碎石的、礫石的、砂質(zhì)的、礦渣的數(shù)類，以碎石采用為普遍。

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.

按混合料大顆粒尺寸不同,可分為粗粒(35～40毫米以下)、中粒（20～25毫米以下）、細(xì)粒(10～15毫米以下)、砂粒(5～7毫米以下)等數(shù)類。

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).

濟(jì)南瀝青砼按混合料的密實(shí)程度不同，可分為密級(jí)配、半開級(jí)配和開級(jí)配和間斷級(jí)配。其中熱拌熱鋪的密級(jí)配碎石混合料經(jīng)久耐用，強(qiáng)度高，整體性好，是修筑出彩瀝青路面的代表性材料，應(yīng)用得廣。

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.

各國對(duì)瀝青混凝土制訂有不同的規(guī)范，中國制定的熱拌熱鋪瀝青混合料技術(shù)規(guī)范，以空隙率10%及以下者稱為瀝青混凝土，又細(xì)分為Ⅰ型和Ⅱ型，Ⅰ型的孔隙率為3～6%（行人道路2%-6%）；Ⅱ型為4～10%；空隙率10%以上者為半開級(jí)配，代表類型有瀝青穩(wěn)定碎石；壓實(shí)后孔隙率為15%以上為開級(jí)配型，代表類型有瀝青磨耗層混合料；對(duì)于間斷級(jí)配瀝青混合料，指級(jí)配中缺少一個(gè)或者幾個(gè)檔次而形成的級(jí)配間斷的混合料，代表類型有瀝青馬蹄脂碎石（SMA）。瀝青混凝土物理力學(xué)指標(biāo)有穩(wěn)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.

瀝青砼到底是什么材料這個(gè)問題我們就講解到這里了，您對(duì)此有怎樣的需求歡迎來我們網(wǎng)站http://www.lehuoaijia.com咨詢了解！

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