The RILEM TC 272 PIM (Phase and Interphase behavior of innovative bituminous Materials)—TG1 Binder has initiated an inter-laboratory program investigating the phase and interphase behaviour of bituminous binders. Within the scope, four laboratories evaluated the low temperature properties of seven binders with differential scanning calorimetry (DSC). DSC has been accepted as a powerful tool to evaluate, among others, the glass transitions, T_g, monitoring the endothermic or exothermic heat flow of a material under controlled temperature conditions. There are different ways to run the test, conventional temperature linear-DSC (TL-DSC), and temperature modulation-DSC (TM-DSC). The latter has been proven as an efficient method differentiating the structural relaxation phenomena from the heat capacity. In this study, emphasis was placed on comparing the T_g measured by TL- and TM-DSC to improve the interpretation of binder glass transitions. In this study, the scope was restrained to two Polymer modified Binders (PmBs): a commercially available modified binder named PmB1 and a highly modified binder (7.5 wt% high vinyl SBS) named PmB2, were evaluated and compared with two neat bituminous binders. Based on the thermographs of the PmB2 obtained through this inter-laboratory program, it was observed that the modification by 7.5% SBS resulted in a decrease of the T_g. This reduction of T_g reflects the positive influence of SBS at low temperatures.

RILEM TC 272 PIM（创新沥青材料的相和相间行为）—TG1 粘合剂已启动一项实验室间计划，研究沥青粘合剂的相和相间行为。在此范围内，四个实验室使用差示扫描量热法 (DSC) 评估了七种粘合剂的低温性能。DSC 已被公认为评估玻璃化转变、T _g等的强大工具，在受控温度条件下监测材料的吸热或放热热流。有不同的运行测试方法，常规温度线性 DSC (TL-DSC) 和温度调制 DSC (TM-DSC)。后者已被证明是区分结构松弛现象与热容的有效方法。在这项研究中，重点放在比较T _g通过 TL- 和 TM-DSC 测量，以改善对粘合剂玻璃化转变的解释。在本研究中，研究范围仅限于两种聚合物改性粘合剂 (PmB)：对一种名为 PmB1 的市售改性粘合剂和一种名为 PmB2 的高度改性粘合剂（7.5 重量％高乙烯基 SBS）进行评估，并与两种纯沥青粘合剂进行比较。根据通过该实验室间程序获得的 PmB2 的温度图，观察到 7.5% SBS 的修改导致T _g降低。T _{g 的}这种降低反映了 SBS 在低温下的积极影响。