两种高速铁路用水泥乳化沥青砂浆力学性能比较研究

Comparative study on mechanical performance of two kinds of emulsified asphalt mortar used in high speed railway

对高速铁路建设过程中使用的两种水泥乳化沥青砂浆的力学性能进行了研究。结果显示:CRTSⅠ型水泥乳化沥青砂浆具有明显的黏弹特性、较低的弹性模量和较大的折压比,其可以通过弹性变形来实现应力缓冲;CRTSⅡ型水泥乳化沥青砂浆具有较高的强度和弹性模量,以及较低的折压比,因其沥青含量较低,黏弹特性不明显,应力缓冲性能相对较差,结构完整性保持能力相对较低。

The paper looks into twp kinds of emulsified asphalt mortar for high speed railway and reaches the following conclusions. Considering the plausible viscoelasticity,the relatively low elastic modulus and the high ratio of flexural strength to compressive strength of CRTS Ⅰ,the stress buffer of the specimen can be realized via elastic deformation.While due to the low asphalt content and the yet visible viscoelastic performance of CRTS Ⅱ,the specimen with outstanding strength and elastic modulus is found poorly performed in terms of stress buffer and structural integrity.