Experimental Study On Modification Technology Of Rammed Earth Wall Reinforcement

Although with superior performance that easily obtained in local,fabricated process simplify,low cast,unparalled environmental protection and renewability etc,the traditional rammed earth wall has the disadvantages of low compressive strength,tensile strength and shear strength,easy to crack and so on.This article will be based on the southwestern region of the soil to be modified to enhance its strength and durability.With polypropylene fiber,gravel,reusable dispersion emulsion powder as a modifier,as geogrid reinforced materials change the overall features,experimental study on traditional Adobe wall materials were modified,and then by measuring the mechanical properties of modified Adobe,compared to the compressive strength,shear strength,tensile strength,and the water resistance of the raw soil material contrast experiment was carried out.To study the mechanical properties of reinforced composite soil wall,we can improve the physical and mechanical properties of raw soil wall on the basis of giving full play to the advantages of raw soil construction.The test results show that adding moderate dosage of polypropylene fiber,Redispersible emulsion powder,breakstone and geogrid can effectively improve the compressive strength,shear strength and tensile strength and crack resistance of rammed earth;and the rammed earth with adding 1%(mass ratio)polypropylene fiber,5% breakstone(mass ratio)(< 5mm? 10 mm and 15 mm breakstone with mass ratio 1:1:1)and geogrid is the optimal scheme.The composite modification scheme could be improve the bearing capacity and seismic performance of rammed earth wall,and applied for building the new rammed earth walls housing.