Abstract:
PURPOSE: A method for manufacturing a cracking control type basic floor for packing using reinforcing fiber and fly ash is provided to efficiently control reflection cracking of a basic floor using reinforcing fiber without using an admixture such as an expensive expansive admixture or a shrinkage reducing agent. CONSTITUTION: A method for manufacturing a cracking control type basic floor for packing using reinforcing fiber and fly ash is as follows. Cement is replaced with fly ash so that an initial strength degradation of a basic floor is induced. Reinforcing fiber is mixed with the manufactured basic floor for controlling an initial reflection cracking. 60 to 70 weight% of the fly ash is replaced with respect to 100 weight% of the cement. 0.2vol% of the reinforcing fiber is mixed with respect to 100vol% of the basic floor.
Abstract:
PURPOSE: A prefabricated block type reinforced earth retaining wall using a steel strip as reinforcing material is provided to simply anchor the leading end of a reinforcing material to the rear side of a block and improve the fastening force. CONSTITUTION: A prefabricated block type reinforced earth retaining wall comprises a block(10), a steel strip type reinforcing material(20), and a connecting member(30). The block forms the front side of a retaining wall. The steel strip type reinforcing material is buried in the reinforced soil(G) behind the block wherein the leading end is anchored in the block to support the block. The connecting member is coupled to the joint formed on the back end of the steel strip type reinforcing material and connects adjacent steel strip type reinforcing materials to apply passive resistance.