Abstract:To overcome the disadvantages such as poor corrosion resistance,volume shrinkage at later stage and etc. of traditional slurry,a new type of alkali-activated geopolymer two-shot grouting material is put forward. Through laboratory test,the influence rule of volume fraction of sodium silicate and powder proportion on initial/final setting time,uniaxial compressive strength,erosion resistance and dry shrinkage is analyzed. Through field test,the feasibility and effect of the grouting material are studied. The results show that gel time of alkali-activated geopolymer grouting material can be controlled between a few seconds and a few minutes. Under specified conditions,when the volume fraction of sodium silicate is 20% or mass ratio of slag to metakaolin is 1∶2,the induration can have the highest compressive strength. In acid solution,strength loss of induration of cement slurry is 50%,but strength loss of induration of alkali-activated geopolymer grouting material is only 20%. Alkali-activated geopolymer grouting materials drying shrinkage rate gradually decreases with the increase of the content of metakaolin. However,when the content of metakaolin is more than 30%,the influence of metakaolin on the volume shrinkage rate of the induration significantly weakens. Alkali-activated geopolymer two-shot grouting material makes full use of industrial waste,its proportion can be adjusted according to the engineering requirement,and its various performances can meet the requirements of grouting treatment.
刘人太,李术才,张庆松,等. 一种新型动水注浆材料的试验与应用研究[J]. 岩石力学与工程学报,2011,30(7):1 454-1 459.(LIU Rentai,LI Shucai,ZHANG Qingsong,et al. Experiment and application research on a new type of dynamic water grouting material[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(7):1 454-1 459.(in Chinese))
[2]
张庆松,韩伟伟,李术才,等. 灰岩角砾岩破碎带涌水综合注浆治理[J]. 岩石力学与工程学报,2012,31(12):2 412-2 419.(ZHANG Qingsong,HAN Weiwei,LI Shucai,et al. Comprehensive grouting treatment for water gushing analysis in limestone breccias fracture zone[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(12):2 412-2 419.(in Chinese))
[3]
张 霄. 地下工程动水注浆过程中浆液扩散与封堵机制研究与应用[博士学位论文][D]. 山东:山东大学,2011.(ZHANG Xiao. Study on mechanism of slurry diffusion and sealing at the process of undergroundengineering moving water grouting and its application[Ph. D. Thesis][D]. Shandong:Shandong University,2011.(in Chinese))
[4]
刘 健,刘人太,张 霄,等. 水泥浆液裂隙注浆扩散规律模型试验与数值模拟[J]. 岩石力学与工程学报,2012,31(12):2 445-2 452.(LIU Jian,LIU Rentai,ZHANG Xiao,et al.Diffusion law model test and numericalsimulation of cement fracture grouting[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(12):2 445-2 452.(in Chinese))
[5]
孙文标,李红行,董新照,等. 注浆封孔材料的性能及其膨胀机制研究[J]. 有色金属,2010,62(6):73-75.(SUN Wenbiao,LI Hongxing,DONG Xinzhao,et al.Properties and swelling mechanism of hole sealing material[J]. Nonferrous Metals,2010,62(6):73-75.(in Chinese))
[6]
许 茜,王彦明,范延勇,等. 注浆材料的发展及其应[J]. 21世纪建筑材料,2010,2(1):58-62.(XU Qian,WANG Yanming,FAN Yanyong,et al.The development and application of grouting materials[J]. 21stCentury Building Materials,2010,2(1):58-62.(in Chinese))
[7]
谢猛. 水泥浆液在松散碎石体中注浆的模型试验研究[硕士学位论文][D].昆明:昆明理工大学,2007.(XIE Meng. Model test research on cement grouting in lose rock body[M. S. Thesis][D]. Kunming:Kunming University of Science and Technology,2007.(in Chinese))
[8]
王江峰,张海波,管学茂. 超细水泥注浆材料煤壁注浆加固试验研究[J]. 河南理工大学学报:自然科学版,2011,30(2):145-148.(WANG Jiangfeng,ZHANG Haibo,GUAN Xuemao. The study on micro-fine cement grouting material applying in colrl reinforcement[J].Journal of Henan Polytechnic University:Natural Science,2011,30(2):145-148.(in Chinese))
[9]
庞宗霞,田利民.水泥-水玻璃浆液的室内试验与研究[J]. 山西交通科技,2010,(5):15-17.(PANG Zongxia,TIAN Limin. The indoor test and research of cement-silicate grout[J]. Shanxi Science and Technology of Communications,2010,(5):15-17.(in Chinese))
[10]
王红喜. 高性能水玻璃悬浊型双液灌浆材料研究与应用[博士学位论文][D].武汉:武汉理工大学,2007.(WANG Hongxi. Research on high performance sodium-silicate suspension two-shot grouting materials and its application[Ph. D. Thesis][D]. Wuhan:WuhanUniversityofTechnology,2007.(in Chinese))
[11]
米承勇,王道平,何智海. 超细水泥灌浆材料的研究与发展[J]. 粉煤灰综合利用,2008,(6):51-53.(MI Chengyong,WANG Daoping,HE Zhihai. Study and development of ultra-fine cement grouting materials[J].Fly Ash Comprehensive Utilization,2008,(6):51-53.(in Chinese))
[12]
DAVIDOVITS J. Early high-strength mineral polymer[P]. USP.,No.4,509,985,April 9,1985.
约瑟夫·戴维德维斯. 地聚合物化学及应用[M]. 王克俭译.北京:国防工业出版社,2011:33-38.(DAVIDOVITS J. Geopolymer chemistry and applications[M]. Translated by WANG Kejian. Beijing:NationalDefenceIndustryPress,2011:33-38.(in Chinese))
[15]
DAVIDOVITS J. Geopolymers and geopolymeric new materials[J]. JournalofThermal Analysis,1989,35(2):429-441.
[16]
高安平,崔学民. 偏高岭土在水泥及混凝土领域的研究进展[J]. 广西大学学报:自然科学版,2006,31(增1):168-172.(GAO Anping,CUI Xuemin.The research progress of meta-kaolinite in cement and concrete materials[J].Journal of Guangxi University:NaturalScience,2006,31(Supp.1):168-172.(in Chinese))
[17]
郑娟荣,周同和,刘丽娜. 碱-偏高岭石-矿渣系胶凝材料的凝结硬化性能研究[J]. 硅酸盐通报,2007,26(6):1066-1067.(ZHENG Juanrong,ZHOU Tonghe,LIU Lina. Study on setting and hardening of “alkali-metakaolin-slag”cementing materials[J]. Bulietin of The Chinese Ceramic Society,2007,26(6):1066-1067.(in Chinese))
[18]
豆海军. 复合水泥基-水玻璃双液注浆材料性能及微观特性研究[硕士学位论文][D]. 北京:中国地质大学,2014.(DOU Haijun. Investigation on the performance and microscopic characteristics of complex Cementitious-sodiumsilicate two-shot grouting materials[M. S. Thesis][D]. Beijing:China University ofGeosciences,2014.(in Chinese))
[19]
张 俊,丛 钢,杨长辉.偏高岭土对碱矿渣水泥砂浆干缩性能的影响[J]. 混凝土,2010,(10):115-117.(ZHANG Jun,CONG Gang,YANG Changhui. Effect of metakaolin on dry-shrinkage of alkali-activated slag cement mortar[J]. Concrete,2010,(10):115-117.(in Chinese))