沥青针入度是沥青的主要质量指标之一。是表示沥青软硬程度和稠度、抵抗剪切破坏的能力，反映在一定条件下沥青的相对黏度的指标。在25℃和5秒时间内，在100克的荷重下，标准会垂直穿入沥青试样的深度为针入度，以1/10毫米为单位。
... 沥青针入度;asphalt penetration 沥青;asphalt;bitumen;pitch 沥青;柏油;煤焦油沥青;Bitumen;Asphalt ...
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沥青针入度试验仪 asphalt penetrometer ; t penetrometer
石油沥青针入度测定仪 penetrometer of petroleum asphalt
沥青针入度仪 bitumen needle forcemeter
沥青针入度比 penetration ratio of bitumen
沥青针入度指数 penetration index of bitumen
同时，老化过程中，沥青针入度、软化点及延度的变化进一步证明了所得动力学模型是可靠的。
The changes of penetration, softening point and ductility of asphalt during aging proved that the kinetic model is reliable.
对于添加石灰石的SBS I - D沥青胶浆，其针入度指数同样表现一最佳矿粉结合料比，该比值高于其他胶浆的最佳矿粉结合料比。
For the limestone and SBS I-D asphalt mastic, the penetration index values also showed an optimum dust to binder ratio but with higher values than other mastics.
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 rheological property and pavement performance of asphalts are studied by carrying out penetration test at different temperature, different weight and different time.
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