There is recent progress in theory of modified asphalts.

本文在研究沥青改质的理论问题上取得了进展。

At last, the aging mechanism of two asphalts was discussed.

并对沥青的老化机理进行了探讨。

The group constituents of the final mixture are quite similar to those of conventional asphalts.

这种混合物的族组成与常规沥青很相似。

It has been found that the age hardening of asphalts is mainly due to the increase of asphaltene...

沥青质含量的增加是沥青老化后性质变坏的重要原因。

It has been found that the age hardening of asphalts is mainly due to the increase of asphaltene content.

沥青质含量的增加是沥青老化后性质变坏的重要原因。

The conditions and development of pavement with ground tire rubber modified asphalts (GTRMAs) inland and abroad are introduced.

介绍了橡胶粉用于改性道路沥青的现状。

Through the study of the evaluation and compare of these high-viscosity asphalts, graded mixture design, performance evaluation.

通过对高粘度沥青性质评价对比、混合料性能评价等方面进行研究。

Determines the water content in petroleum products, tars, emulsified asphalts and other bituminous materials by the distillation method.

简单介绍迪安·斯塔克水分测定仪通过蒸馏方法测量石油产品、焦油、乳化沥青和其他沥青材料的水含量。

These asphalts are used in the construction of built-up roof coverings, the coating of underground transmission pipes and other applications.

这些沥青可用于组合屋面复盖层的建造、地下输送管线的涂层及其他应用领域。

Through lots of force ductility tests, the tensile performances of the different SBS modified asphalts in different temperatures are analyzed.

采用测力延度试验，本文分析了不同SBS改性沥青在不同温度，不同改性剂掺量下的性能变化特点。

Based on parameter of softening point, aging kinetics model was established to show aging condition of two asphalts and to calculate activation energies.

同时以软化点为参数建立老化动力学模型来反映两种沥青的老化情况，并计算出活化能。

By using vacuum residue from Liaohua refinery as the raw material, several brand heavy paving asphalts have been produced, which meet GB/T15180-94 standard.

应用辽化炼油厂的减压渣油作为原料，研制出符合GB/T15180 94标准的多个牌号重交通道路沥青。

Emulsified asphalts for agricultural applications met provisional technical requirements were prepared by sifting raw material with laboratory and pilot tests.

通过实验室小型和中型试验，对沥青原料进行了筛选，研制出符合暂定技术要求的农用乳化沥青产品。

Thin film oven aging behaviors of SB S modified asphalts were studied by infrared spectrum, gel permeation chromatography, dyn amic mechanical property analysis.

用红外光谱、凝胶渗透色谱、动态黏弹仪研究了苯乙烯-丁二烯嵌段共聚物（SBS）改性沥青的薄膜烘箱老化行为。

The rheological property and pavement performance of asphalts are studied by carrying out penetration test at different temperature, different weight and different time.

对沥青进行不同温度、不同针重及不同贯入时间下的针入度试验，以此来评价沥青的流变特性及路用性能。

The invention features simple structure and convenient adaptation, and is suitable for circulating and heating various petroleum and coal asphalts and other liquid materials.

本发明结构简单，改装方便，不仅适用于各种石油沥青和煤沥青，也适用于其它液状物质的循环与加热。

Three kinds of asphalts, one in the original and two others modified by antistripping or chemical agents, are examined by assessment of the adhesiveness and residual performance.

通过对基质沥青、抗剥落剂改性沥青和化学改性沥青粘附性能和残余粘附稳定度的分析，比较了3种沥青在粘附性方面的不同特征。

The results obtained are as follows: the softening point and viscosity of two asphalts were increased, while the penetration and ductility were decreased with the introduction of TLA.

结果表明：TLA均可提高两种基质沥青的软化点，增大其粘度，降低其延度和针入度。

The cure behavior, thermal stability and glass transition behavior of epoxy asphalts were investigated by using differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA).

采用差示扫描量热仪(dsc)和热失重分析仪(TGA)研究了环氧沥青的固化行为，玻璃化转变和热稳定性，并与纯沥青进行了比较。

The viscous flow property and the durability of asphalts, as well as their relationship, have been studied with the purpose of determining the durability as a function of the original properties.

为了用沥青的初始性质来判别其耐久性，研究了沥青的粘流性质和耐久性，及其相互关系。