CAJ | 학술논문

在严重热害环境下，水泥灌浆料会发生产一系列物理、化学变化，从而导致材料本身产生非常严重的收缩，严重影响了锚杆稳固隧道围岩安全的可靠性。弹性模量为反映水泥基材料性能的基本力学性能参数之一，可通过控制弹性模量来解决灌浆料的收缩开裂，结构变形等系列问题。通过改变温度、湿度、细骨料粒径及水灰比等参数设计了六组配合比，分别研究了水泥灌浆料在不同温度（20、35、50、70℃），不同湿度，不同细骨料粒径及不同水灰比的条件下弹性模量的变化规律。研究表明：随着温度的增加，弹性模量逐渐减小；在潮湿环境下测得的弹性模量较相应干燥环境下大；随着细骨料粒径增大，弹性模量减小；水灰比越大，弹性模量越小。
재엄중열해배경하，수니관장료회발생산일계렬물리、화학변화，종이도치재료본신산생비상엄중적수축，엄중영향료묘간은고수도위암안전적가고성。탄성모량위반영수니기재료성능적기본역학성능삼수지일，가통과공제탄성모량래해결관장료적수축개렬，결구변형등계렬문제。통과개변온도、습도、세골료립경급수회비등삼수설계료륙조배합비，분별연구료수니관장료재불동온도（20、35、50、70℃），불동습도，불동세골료립경급불동수회비적조건하탄성모량적변화규률。연구표명：수착온도적증가，탄성모량축점감소；재조습배경하측득적탄성모량교상응간조배경하대；수착세골료립경증대，탄성모량감소；수회비월대，탄성모량월소。
In severe heat - hot environment,a series of physical and chemical changes of cement grouting material will be happened in the heating process,causing the material itself to contract seriously,which affects the safety of stability of surrounding rock and tunnel anchor.Elastic modulus which is one of the basic mechanics performance parameters of material properties of concrete would be con-trolled to solve a series of problems such as the shrinkage and cracking of grouting materials and structural deformation.Six groups of mixture ratios were designed by changing the temperature,humidity,fine aggregate,water cement ratio.The elastic modulus variation of cement grouting material were studied under different conditions of temperatures(such as 20,35,50,70 ℃),humidity,fine aggregate size,water - cement ratio.The results show that with the temperature increasing,the elastic modulus decreases,the elastic modulus is larger in wet environment than that in corresponding dry environment. With the fine aggregate size increasing. The elastic modulus de-creases. The larger the water - cement ratio is,the smaller the elastic modulus is.