摘要
以1:25烧料礓石改性土为制浆原材料,研究水灰比、土体初始含水率、搅浆速度、搅浆时间和二次搅浆时间间隔等制浆工艺对浆液结石体力学性能的影响,分析不同制浆工艺试样在浸水和冻融循环工况下的强度变化.结果表明,制浆工艺会显著影响浆液结石体的微观结构,进而影响结石体的力学性质,浸水和冻融循环工况使得浆液结石体力学性能总剧下降,两种工况下试样强度随制浆工艺的变化趋势与原状试样的变化趋势基本一致.分析了主要影响浆液结石体力学性质的关键因子,优化了制浆工艺.
The 1:25 burnt vermiculite modified soil was used as a pulping raw material to study the watercement ratio,initial soil moisture content,pulping speed,pulping time and secondary agitation pulping process,and to analyze the deterioration of strength on different pulping samples under water immersion and freeze-thaw cycles.The study showed that the pulping process significantly affected the microstructure of the slurry stone,which in turn affected the mechanical properties of the stone body.The water immersion and freezing and thawing environments caused the mechanical properties of the slurry stone to drop sharply.Besides,the strength changing with the pulping process was the same as the original sampie.The key factors affecting the mechanical properties of the slurry stone were analyzed and optimize.
作者
周杰
王旭东
裴强强
刘鸿
李志强
俞晶晶
Zhou Jie;Wang Xu-dong;Pei Qiang-qiang;Liu Hong;Li Zhi-qiang;Yu Jing-jing(Key Laboratory of Mechanics on Disaster and Environment in Western China with the Ministry of Education,Lanzhou University,Lanzhou 730000,China;Northwest Research Institute Co.Ltd.of CREC,Lanzhou 730000,China;National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites,Dunhuang 736200,Gansu,China;The Service Center of Cultural Relics Conservation Technology of the Dunhuang Academy,Lanzhou 730000,China)
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第1期125-132,共8页
Journal of Lanzhou University(Natural Sciences)
基金
甘肃省科技重点研发计划项目(18YF1WA003)
甘肃省文物保护科学和技术研究项目(201604)。
关键词
制浆工艺
浸水试验
冻融循环试验
微观结构
力学性能
pulping process
immersion test
freeze thaw cycle test
micro-structure
mechanical property
