CAJ | 학술논문

水泥沥青砂浆（CA 砂浆）是高速铁路板式无砟轨道的充填层材料。采用 CSS8810电子万能试验机对不同龄期的 CA 砂浆进行了单轴压缩试验，结果表明：CA 砂浆的力学性能具有明显的龄期效应，峰值应力和弹性模量随龄期的增长而逐渐增大；CA 砂浆的应力－应变关系具有明显的应变硬化特性，沥青网络结构的横向约束作用是其主要影响因素。考虑损伤部分通过相互摩擦仍具有一定的承载能力，通过理论推导建立了 CA 砂浆的损伤本构关系，拟合结果与试验曲线一致性较高，能够有效体现 CA 砂浆力学性能的龄期效应和应变硬化特性。研究成果有望进一步推动 CA 砂浆力学性能的研究进展。
수니력청사장（CA 사장）시고속철로판식무사궤도적충전층재료。채용 CSS8810전자만능시험궤대불동령기적 CA 사장진행료단축압축시험，결과표명：CA 사장적역학성능구유명현적령기효응，봉치응력화탄성모량수령기적증장이축점증대；CA 사장적응력－응변관계구유명현적응변경화특성，력청망락결구적횡향약속작용시기주요영향인소。고필손상부분통과상호마찰잉구유일정적승재능력，통과이론추도건립료 CA 사장적손상본구관계，의합결과여시험곡선일치성교고，능구유효체현 CA 사장역학성능적령기효응화응변경화특성。연구성과유망진일보추동 CA 사장역학성능적연구진전。
Cement and asphalt mortar (CA mortar)is the filling layer material of the slab track of high-speed rail-way.Uniaxial compression test was carried out on CA mortar specimens of different ages by CSS881 0 electronic u-niversal testing machine.Results show that the mechanical properties of CA mortar display obvious age effect,and the peak stress and elastic modulus gradually increase with the growth of age.The stress-strain relation of CA mor-tar displays obvious strain hardening characteristic,and the lateral constraint of asphalt network structure is the main influencing factor.Through theoretical derivation,the damage constitutive relation of CA mortar was estab-lished in consideration of the carrying capacity of the damaged part through mutual friction.The fitting result is highly consistent with test curves,and effectively reflects the age effect and strain hardening characteristics of the mechanical properties of CA mortar.The research result is expected to promote the research on mechanical proper-ties of CA mortar.