Experimental Study On Chemical Consolidation Of Earthen Sites

Earthen site is a special category of relics. It is usually has great size and isdifficult to be moved. Earthen site makes up with soil material which is easy affectedby various factors，determining it is hard to be protected. So we need fuse variousdisciplines of knowledge to promote the work under the cooperation of researchers.Earthen sites protection started late in worldwide，it still state at an experimentalexploratory stage. Workers from various disciplines，make efforts to resolve theweathering of the earthen sites. But how to evaluate the chemical reinforcement effectof the earthen sites, there is no unified methods and standards. So we established anindicator system to evaluate test results, which provides guidance for experimentalstudy of the earthen site chemical reinforcement.Through literature review and site investigation，we divide the sites damages into10categories according to environmental factors. It includes wind erosion，rainerosion，dry–wet damage，temperature difference damage，salt erosion，freeze-thawdust pollution，biological weathering and vandalism. This work provides standards toprotect earthen sites.On the basis of analysis of earth sites of disease and protection requirements, thispaper establish an indicator system to evaluate test results according to requirementsof sites protection. This indicator system has7major categories and25indicators，Weuse three materials（PS，Remmers300，TBH） to test out some important indicatorsincluding：morphology，color，water vapor permeability，mechanical strength，surfacehardness，swelling and shrinkage，reinforcement depth and weather resistance（waterresistance, dry-wet damage resistance, salt damage resistance, abrasion resistance）.These tests show the feasibility of these indicators.