The Failure Mechanism And Experimental Study On Chemical Consolidation Of Henan Baofeng Ru Kiln Earthen Sites

Earthen sites is left in the soil of a particular historical period as the mainbuilding materials of large immovable cultural relics,is an important part of Chineseculture.Its degree of integrity and saving time are closely related to the environmentof the occurrence.Affected by the climate change and human activities,earthen sites isconstantly subjected to unprecedented devastation.Many scholars at home and abroadall carried out relevant research about its failure mechanism and chemicalreinforcement,tried to take advantage of a variety of chemical materials forreinforcement. However,due to the importance of earthen sites and the problem ofaging of the reinforcement material,experts on the chemical strengthed method havebeen cautious,caused the chemical reinforcement research progress slowly.In thisthesis,Henan Baofeng Qingliangsi Ruguan sites as example,carry out the failuremechanism and weathering strengthed test research.The main contents andachievements are as follows:(1) The disease types and destructive mechanism of Henan Baofeng QingliangsiRu Kiln earthen sites.At present,the main disease types of the sites have dust,soilcracking and soil chalking.Among dust suppression and soil cracking havestabilized,the soil chalking continues to deteriorate,eroding the surface of thesites.Through on the analysis of the disease and monitoring sites on the environmenttemperature and humidity,conclusion:the chalking of the sites is caused by stronglytemperature and humidity gradient between the indoor air and the surface of thesites.Differences in temperature and humidity gradient produced the mineral thermalexpansion and contraction,thermal stress to repeate to sites surface.So that the soilparticles of the sites surface chalked off.(2) Earthen sites reinforcement experimental study,and evaluate the reinforcementeffect.The test soil samples come from Baofeng Qingliangsi Ru Kiln earthensites.Prepared by drying soil quality,moisture content and other parameters to theindoor ring knife remodeling soil samples.Use MH,RM and TEOS threereinforcement materials,Go on soil samples reinforced protection research.By laboratory test,comprehensive evaluation of the reinforcing effect of the threematerials,MH material has good reinforcing effect.Its high permeability,goodmechanical strength,neither change the appearance of soil samples,nor can make thesoil samples to get a better vapor permeability,water resistance,salttolerance,freeze-thaw resistance and resistance to aging and two reinforcementwaterproof performance.(3) Develop the field test of Earthen sites and the effect of consolidation.The areareinforced by MH material,the color and water vapor permeability are notchanged,the penetration depth is also in line with the requirements of theprotection.The reinforced material can achieve the reinforcement requirements ofHenan Baofeng Qingliangsi Ru kiln Earthen sites,can effectively extend the life of theEarthen sites.