以沥青混合料试件为研究对象,探讨了原子力显微样本的制备方法.选取最大纵向起伏度和表面粗糙度两个指标对不同储存条件下的样本制备效果进行评定,提出采用低温冷冻措施保证AFM(atomic force microscope)样本平整度的制样方法;利用原子...以沥青混合料试件为研究对象,探讨了原子力显微样本的制备方法.选取最大纵向起伏度和表面粗糙度两个指标对不同储存条件下的样本制备效果进行评定,提出采用低温冷冻措施保证AFM(atomic force microscope)样本平整度的制样方法;利用原子力显微技术的力学性能量化模块AFMQNM(atomic force microscope-quantitative nano mechanical),选取沥青胶浆区域3个典型的观测区域,进行原子力显微测试及微尺度力学性能量化表征.研究结果表明,"冷冻保存、低温切割"的混合料试件样本制备方法能够满足AFM技术的观测要求;AFM-QNM技术可以在混合料试件中直接测试沥青(胶浆)和矿质集料的模量和黏附性质,可有效区分不同的材料组分.展开更多
Black asphalt road have excellent properties to collect the solar radiation and good use of asphalt absorb solar energy is a new energy technology. Asphalt is a sticky plastic material,its modulus and strength will ch...Black asphalt road have excellent properties to collect the solar radiation and good use of asphalt absorb solar energy is a new energy technology. Asphalt is a sticky plastic material,its modulus and strength will change with temperature and the actual bearing capacity of pavement structure will change as well. A new method was used to evaluate the temperature change of asphalt pavement. By simulate solar radiation on asphalt sample to study the change of the temperature field. The temperature distribution of the asphalt concrete under the same light radiation and circulating water was also studied. The results indicate that this method can be a good simulation of solar collectors on the surface temperature field.展开更多
文摘以沥青混合料试件为研究对象,探讨了原子力显微样本的制备方法.选取最大纵向起伏度和表面粗糙度两个指标对不同储存条件下的样本制备效果进行评定,提出采用低温冷冻措施保证AFM(atomic force microscope)样本平整度的制样方法;利用原子力显微技术的力学性能量化模块AFMQNM(atomic force microscope-quantitative nano mechanical),选取沥青胶浆区域3个典型的观测区域,进行原子力显微测试及微尺度力学性能量化表征.研究结果表明,"冷冻保存、低温切割"的混合料试件样本制备方法能够满足AFM技术的观测要求;AFM-QNM技术可以在混合料试件中直接测试沥青(胶浆)和矿质集料的模量和黏附性质,可有效区分不同的材料组分.
文摘Black asphalt road have excellent properties to collect the solar radiation and good use of asphalt absorb solar energy is a new energy technology. Asphalt is a sticky plastic material,its modulus and strength will change with temperature and the actual bearing capacity of pavement structure will change as well. A new method was used to evaluate the temperature change of asphalt pavement. By simulate solar radiation on asphalt sample to study the change of the temperature field. The temperature distribution of the asphalt concrete under the same light radiation and circulating water was also studied. The results indicate that this method can be a good simulation of solar collectors on the surface temperature field.
