延度

影响SBS改性沥青延度的因素探讨

Investigations on Factors Effecting the Ductility of Bitumen

详细研究了化学改性对SBR改性乳化沥青主要性能包括软化点、针入度和低温延度的影响规律。

It studies the orderliness of chemical modification to asphalt 's performances that include softening point , penetration and low temperature ductility .

阐述了SBS改性沥青低温延度的主要影响因素。

Factors influencing low temperature ductility of SBS modified asphalt was analyzed .

刍议SBS改性沥青的延度性质

A Rustics opinion on ductility of SBS modified asphalts

当SBS质量分数达到7%或以上时，则形成连续相。随着SBS质量分数的增加，改性沥青的软化点和低温延度升高，针入度和高温贮存稳定性下降。

With increasing the mass fraction of SBS in modified asphalt softening point and ductility increased , penetration and stability decreased .

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。

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

SBS辐照后，改性沥青的软化点和低温延度明显提高，在辐照剂量40kGy时达到最高值。

When the asphalt modifier SBS irradiated , softening point and low temperature ductility of modified asphalt cement distinctly enhanced . When the dose was 40 kGy they achieved the maximum .

在对沥青测力延度的大量试验基础上，本文分析了基质沥青、改性沥青以及短期老化（RTFOT）和长期老化（PAV）后的拉伸特性机理。

This paper analyses the tensile performance of the asphalt and modified asphalt including aging - asphalt .

相比于REC和Mt，沥青/EVMt复合材料在TFOT和PAV老化之后显示出更低的粘度老化指数、软化点增量和更高的延度保留率。

Compared with REC and Mt , bitumen / EVMt nanocomposite shows the lower viscosity aging index and softening point increment , and the higher retained ductility .

试验证明SEBS改性沥青具有优良的基本物理性能，质量分数为45%SEBS改性国产青岛沥青的PI提高到035，软化点达到59℃，5℃延度也达到了26cm。

The test results show that SEBS modified asphalt has good basic physical performances . PI , softening point and ductility of 4 5 % SEBS modified Chinese Qingdao asphalt amount to 0 35 , 59 ℃ and 26 cm .

利用测力延度试验着重观察了SBS改性沥青的低温拉伸性能，探讨了基质沥青性质、聚合物种类和含量、热老化等因素对改性沥青低温性能的影响。

Emphatically , FDT was utilized to observe low temperature drawing performance of SBS modified asphalt . The effects of some factors were evaluated , such as the property of matrix asphalt , the kind and content of polymer , thermal ageing , and the low temperature performance .

氮丁胶乳改性乳化沥青的软化点约54℃，5℃延度约16cm，与高温聚合型丁苯胶乳大致相当。

Performance of asphalt emulsion modified by CR latex was similar with high-temperature polymer SBR latex-softening point about 54 ℃ , ductility of 5 ℃ about 16 cm .

SBR质量分数在1%～4%的试样延度均大于150cm，但SBR质量分数为10%与15%的试样延度分别为72cm和70cm；

The ductility of samples is longer than 150 cm in the range of 1 % to 4 % of SBR content , whereas it is 72 cm and 70 cm when mass fraction of SBR is 10 % and 15 % .

结果表明：在聚合物加入量3%的情况下，高温聚合型丁苯胶乳改性乳化沥青的性能较差，其蒸发残留物的软化点低于55℃，5℃延度小于20cm；

It was found that , with 3 % polymer , performance of the asphalt emulsion modified by high-temperature SBR latex was not satisfied , its softening point was under 55 C , ductility of 5 ℃ was below 20 cm .

而低温聚合型丁苯胶乳改性乳化沥青的性能较好，其蒸发残留物的软化点在56~60℃，5℃延度大于150cm；

But performance of the asphalt emulsion modified by low-temperature polymer SBR latex was better , its softening point was between 55-60 ℃, ductility of 5 ℃ submit 150 cm .

再生后沥青质标完全满足重交通道路石油沥青质量标准（GB50092-96）的要求，而且在老化前后延度、针入度比等关键指标优于这个标准的要求。

The property of regenerated asphalt meets the specification of heavy duty road asphalt ( GB50092-96 ) entirely and even excels to the requirement of the standard in ductility , the penetration ratio by aging .

采用沥青薄膜烘箱试验（TFOT）和紫外线老化试验，对壳牌90号重交通道路石油沥青，以及掺加添加剂后沥青的针入度、软化点、延度和粘度等指标进行了试验研究。

Employing the rolling thin film oven test and ultraviolet radiation aging test , the pene - tration index , soft point , ductility and viscosity of AH-90 asphalt and other additives modified asphalt were investigated .

用测力延度试验评定聚合物改性沥青低温性能

Evaluation of Low Temperature Performances of Polymer Modified Asphalts by Force-Ductility Test

利用化学共混法改善重交沥青延度试验

Tests for improving ductility of road paving asphalt by chemical blending technique

饱和烃和芳香烃影响沥青的低温延度和粘结性。

Saturation and aromatics affect the ductility of asphalt at low temperature .

测力延度试验以及韧性比评价指标的研究

Research of Force - ductility Test and Toughness Ratio Index

沥青延度测定影响因素的探讨

Discussion on factors effecting determination of asphalt ductility

道路沥青的低温延度指标

The Low Temperature Ductility Norm of Road Asphalts

沥青的延度与路用性能的探讨

A Discussion on Asphalt Ductility and Paving Performance

沥青胶结料的测力延度试验研究

Experimental Investigation into Asphalt Binder by Force-Ductility Test

用测力延度试验评价沥青胶浆的低温性能沥青材料延展性测量方法

Evaluation of low temperature performances of asphalt mortar by measuring-stress ductility test testing method for ductility of bituminous materials

随剪切时间和剪切速率的增加，软化点上升，延度增加，针入度降低。

The softening point and ductility were enhanced with the increase of shear time and shear velocity , but the penetration was decreased .

结果表明，延度可以比较全面地反映弹性体改性沥青涂盖料的低温拉伸性能，是评价弹性体改性沥青涂盖料低温性能简单有效的方法。

Test results indicate the force ductility test is a simple and effective means showing low temperature tension performances of elastomer modified asphalt coating .

阻燃剂对沥青改性后，提高了沥青的布氏粘度和软化点，针入度和延度降低；

Comparison neat asphalt and flame retardants modified asphalt , after flame retardants modified the viscosity and softening point increase and penetration and ductility decrease .

采用沥青薄膜加热试验和紫外线老化试验，对沥青的针入度、软化点、延度和粘度等性能指标进行了试验研究。

By thin film oven test and ultraviolet photooxidation test , asphalt performance indices were studied , including penetration , softening point , ductility and viscosity .