Natural bitumen

Mechanism of natural asphalt s modification and its performance;

天然沥青的改性机理及路用性能研究

Based on the current research and development of natural asphalt in road engineering both in China and abroad, this paper systematically analyzes and examines the changes on the properties of base petroleum asphalt when adding four types of typical natural asphalts (including rock asphalt of Xinjiang , Sichuan and Utntahite as well as lake asphalt of TLA).

本文根据目前国内外天然沥青在道路工程中应用现状及路用性能研究进展，针对国内外四种典型天然沥青(包括新疆、四川和北美的岩沥青，以及南美湖沥青)对基质石油沥青性能的影响进行全面试验分析，研究天然沥青作为新型石油沥青改性剂的路用特点。

According to the characteristics of SBS modified asphalt and natural asphalt,the design method has been applied by the author.

根据SBS改性沥青和天然沥青的特点,提出设计方法。

Natural bitumen and simulated bitumen samples in different genesis have been analyzed and studied systematically using liquid chromatograph and several other analytical instruments.

利用液相色谱等仪器分析手段 ,较系统地研究了不同成因类型的天然沥青及模拟沥青样品 ,特别是其中的胶质、沥青质重组分 ,揭示了沥青结构组成中的成因信息。

The article introduced the category of natural bitumen and the characteristic of gilsonite.

介绍了天然沥青的种类与天然岩沥青的特点。

Application of Natural Rock Asphalt in Grade Road;

天然岩沥青在等级路中的应用

The indoor performance study on the asphalt mixture modified by natural rock asphalt

天然岩沥青改性沥青混合料室内性能研究

asphlt block (excl. those for remelting)

天然沥青块（不包括需再次融化的天然沥青块）

container, asphalt cast or moulded

天然沥青容器,浇铸或模制

board, roofing, enveloped in or covered on both sides with asphalt or similar bituminous material

薄板，屋顶月双面包有或覆盖有天然沥青或类似含地沥青材料

Composition,Category of Natural Asphalt and Its Technical Applicability in Pavement

天然沥青组成、类别及在路用工艺中的适用性

Natural Resources: bauxite, coal, crude oil, iron ore, natural asphalt, calcium, silica, mica, salt, clays.

自然资源：铝矾土、煤、原油、铁砂、天然沥青、石灰、硅石、云母、盐、粘土。

native asphaltic pyrobitume

天然地沥青质焦沥青

A black, viscous natural bitumen.

软沥青一种天然的黑色粘性沥青

A Study on Pavement Performance of Chinese-Made Natural Rock Asphalt Modified Asphalt Mixture

国产天然岩沥青改性沥青混合料路用性能研究

Applied Study of Natural Rock Asphalt to Asphalt Pavement

天然岩沥青在沥青路面中的适用性研究

The indoor performance study on the asphalt mixture modified by natural rock asphalt

天然岩沥青改性沥青混合料室内性能研究

Influence of Rock Asphalt Modified Bitumen on Asphalt Rheological Property

天然岩沥青改性对沥青流变性能的影响

bituminous block (excl. those for remelting)

地沥青块（不包括需再次溶化的天然沥块）

A trademark used for a natural black bitumen employed in the manufacture of acid, alkali, and waterproof coatings.

硬沥青适用于制造酸、碱和防水服的一种天然黑沥青的商标

A natural black bitumen used in the manufacture of acid, alkali, and waterproof coatings.

硬沥青用来制造酸、碱和防水涂层的天然的黑色沥青

Identification of natural gas origin using the characteristics of bitumen and fluid inclusions

应用流体包裹体和沥青特征判别天然气的成因

Approach to Adaptbility of Natural Lake Asphalt and Its Prospects

关于天然湖沥青应用性能与前景的探讨

Any of various natural bitumens, such as mineral pitch or asphalt.

树脂，自然沥青某种自然的沥青，如矿石沥青或树脂

Asphalt was still steaming,

沥青路面仍然冒着热气，