CAJ | 학술논문

采用正交试验的方法研究了以水镁石纤维为增强材料的新型外墙保温砂浆制备工艺技术问题。研究发现，纤维规格对砂浆抗压强度、抗折强度及密度均有较大影响，珍珠岩用量对砂浆导热系数影响最大，而纤维用量是线收缩率的主要影响因素。水镁石纤维保温砂浆的最佳水平搭配为：珍珠岩用量为水泥量的1.1倍，采用X规格纤维，纤维用量为水泥量的4%。在研究的三个规格水镁石纤维中，X型的纤维对砂浆的强度最有利，对应的砂浆流动性较大，砂浆硬化体密度也较大，线收缩率最小。随纤维用量增加，砂浆的强度和导热系数增加，干密度先上升后下降，线收缩率先减小后增加。随珍珠岩用量增加，砂浆的强度和导热系数降低，线收缩率增加，干密度先下降后上升。纤维规格对砂浆性能的影响与纤维的长度分布有关，纤维过长或过短，均不利于纤维对砂浆增强作用的发挥。
채용정교시험적방법연구료이수미석섬유위증강재료적신형외장보온사장제비공예기술문제。연구발현，섬유규격대사장항압강도、항절강도급밀도균유교대영향，진주암용량대사장도열계수영향최대，이섬유용량시선수축솔적주요영향인소。수미석섬유보온사장적최가수평탑배위：진주암용량위수니량적1.1배，채용X규격섬유，섬유용량위수니량적4%。재연구적삼개규격수미석섬유중，X형적섬유대사장적강도최유리，대응적사장류동성교대，사장경화체밀도야교대，선수축솔최소。수섬유용량증가，사장적강도화도열계수증가，간밀도선상승후하강，선수축솔선감소후증가。수진주암용량증가，사장적강도화도열계수강저，선수축솔증가，간밀도선하강후상승。섬유규격대사장성능적영향여섬유적장도분포유관，섬유과장혹과단，균불리우섬유대사장증강작용적발휘。
Adopted the method of orthogonal test, the manufacture process and technology of a new-type insulation mortar which is used the brucite fiber as a reinforcing material are discussed. The research indicates that fiber types have greater impact on mortar compressive strength, flexural strength and density, perlite dosage is the biggest influence on mor-tar thermal conductivity, and the fiber content is the main factor affecting the linear shrinkage rate. The appropriate mix of the brucite fiber insulation mortar: perlite-to-cement ratio is 1.1, X-type fiber, and the fiber content of cement volume is 4%. In the research of the three types brucite fiber, X fiber is most favorable to mortar strength, the corresponding mortar fluidity is great, bulk density is also bigger and the linear shrinkage rate is minimum. With the fiber dosage increase, the strength and thermal conductivity increase, dry density first increases and then decreases, linear shrinkage first decreases and then increases. With the perlite dosage increase, the strength and thermal conductivity decrease, linear shrinkage in-creases, dry density first decreases and then increases. Fiber length greatly influences on mortar performances: too long or too short fiber are not conducive to its reinforced role on mortar.