瀝青混凝土是一種多層結構，通常由以下幾個主要組成部分構成：

Asphalt concrete is a multi-layer structure typically composed of the following main components:

1、基層：基層通常是路面下的底部層，它支撐和分散交通載荷，確保路面的穩定性。基層通常由碎石或礦物顆粒組成。

1. Base layer: The base layer is usually the bottom layer under the road surface, which supports and disperses traffic loads, ensuring the stability of the road surface. The base layer is usually composed of crushed stones or mineral particles.

2、底基層：底基層是基層之上的一層，它有助于分散交通載荷，減輕路面壓力。底基層通常由更小的礦物顆粒組成。

2. Subbase: Subbase is a layer above the base layer, which helps to disperse traffic loads and reduce road pressure. The base layer is usually composed of smaller mineral particles.

3、瀝青層：瀝青層是瀝青混凝土的頂部層，它提供了平坦、耐磨和抗滑的路面。這一層由瀝青膠粘劑、骨料和填充劑混合而成。

3. Asphalt layer: The asphalt layer is the top layer of asphalt concrete, which provides a flat, wear-resistant, and skid resistant road surface. This layer is composed of a mixture of asphalt adhesive, aggregates, and fillers.

4、表面層：表面層通常是瀝青混凝土路面的頂部一層，它提供了更好的抗滑性和平滑度。這一層通常由細石子、沙子和特殊的表面處理材料組成。

4. Surface layer: The surface layer is usually the top layer of asphalt concrete pavement, which provides better skid resistance and smoothness. This layer is usually composed of fine stones, sand, and special surface treatment materials.

瀝青混凝土密度一般是多少

What is the general density of asphalt concrete

瀝青混凝土的密度通常是由其組成部分的類型和配比來決定的。一般而言，瀝青混凝土的密度在2.2克/立方厘米（g/cm?到2.4克/立方厘米之間。這意味著每立方厘米的瀝青混凝土材料重量約在2.2克到2.4克之間。

The density of asphalt concrete is usually determined by the type and proportion of its components. Generally speaking, the density of asphalt concrete is between 2.2 grams per cubic centimeter (g/cm?) and 2.4 grams per cubic centimeter. This means that the weight of asphalt concrete material per cubic centimeter is approximately between 2.2 grams and 2.4 grams.

密度的具體數值可以受到多種因素的影響，包括使用的骨料類型、瀝青膠粘劑的質量、溫度和壓實方法等。不同類型的瀝青混凝土用于不同的工程項目，密度的要求也可能有所不同。例如，高密度的瀝青混凝土通常用于高速公路，以提供更大的耐用性和承載能力。

The specific value of density can be influenced by various factors, including the type of aggregate used, the quality of asphalt adhesive, temperature, and compaction method. Different types of asphalt concrete may have different density requirements for different engineering projects. For example, high-density asphalt concrete is commonly used on highways to provide greater durability and bearing capacity.

密度的確切數值通常由工程規范和設計要求確定，以確保所建道路或其他結構的安全性和性能。密度的控制和測試是施工過程中的重要步驟，以確保瀝青混凝土的質量和一致性。

The exact value of density is usually determined by engineering specifications and design requirements to ensure the safety and performance of the constructed road or other structure. Density control and testing are important steps in the construction process to ensure the quality and consistency of asphalt concrete.

總之，瀝青混凝土是一種常見的建筑材料，用于道路和交通基礎設施的建設。它的密度一般在2.2克/立方厘米到2.4克/立方厘米之間，具體數值取決于多種因素，包括材料類型和工程要求。密度的控制對于確保道路和結構的質量至關重要。

In summary, asphalt concrete is a common building material used in the construction of roads and transportation infrastructure. Its density is generally between 2.2 grams per cubic centimeter and 2.4 grams per cubic centimeter, and the specific value depends on various factors, including material type and engineering requirements. Density control is crucial for ensuring the quality of roads and structures.

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