Pavement body, method for constructing pavement body, and mold form for concrete

Abstract

In order to provide a pavement body that is well drained and that keeps a part of water at a time of rain so as to avoid generation of a large amount of discharging water, that supplies the kept water to a surface layer at a time of drought and that soaks up the water of the roadbed so as to lower the temperature of the surface layer, a middle layer part ( 12 ) is formed by laying a porous aggregate mixture (a) made by mixing a porous material with a solidification material of a cement system, and a surface layer part ( 11 ) is formed by laying an asphalt mixture (b) having a water permeable function on the middle layer ( 12 ) so that a base course ( 1 a ) comprising a pavement body ( 1 ) is formed.

1 . A pavement body characterized by comprising at least two layers, wherein a porous aggregate mixture made by mixing a porous material with a solidification material of a cement system is laid and a surface layer material having a water permeable function is laid on the porous aggregate mixture. 
     
     
         2 . The pavement body described in  claim 1 , wherein a semi impermeable film having both the water permeable function and a blocking function is formed at a boundary between the porous aggregate mixture and a roadbed locating under the porous aggregate mixture. 
     
     
         3 . The pavement body described in  claim 2 , wherein the semi impermeable film is inclined in a direction of a drain. 
     
     
         4 . The pavement body described in  claim 1 , wherein a surface of a road pavement is formed by laying the surface layer material in a flat state from one end part in a width direction to the other end part without any cross slope from a center to each end in the width direction. 
     
     
         5 . The pavement body described in  claim 1 , wherein a surface of a road pavement is formed with the surface layer material having the water permeable function inclined from a center to one end part toward a width direction and the center to the other end part by a certain cross slope respectively. 
     
     
         6 . The pavement body described in  claim 1 , wherein a crushed stone base course is laid underneath the porous aggregate mixture made by mixing the porous material with the solidification material of the cement system, and furthermore a porous material without including a mixture such as a solidification material is laid underneath the crushed stone base course. 
     
     
         7 . The pavement body described in  claim 1 , wherein the porous material is clinker ash. 
     
     
         8 . A method for constructing the pavement body described in  claim 1 , and characterized by that a current pavement is taken away so as to expose a roadbed, a middle layer part comprising the porous aggregate mixture is constructed, and a surface layer part comprising the surface layer material having the water permeable function is constructed sequentially. 
     
     
         9 . A method for constructing the pavement body described in  claim 6 , and characterized by constructing a base layer part comprising a porous material without including the mixture such as a solidification material, a second middle layer part comprising the crushed stone base course, a middle layer part comprising the porous aggregate mixture, and the surface layer part comprising a surface layer material having the water permeable function sequentially from a bottom to a top. 
     
     
         10 . A mold form for concrete that can be backfilled and that is a porous aggregate mixture made by mixing a porous material with a solidification material of a cement system molded into a plate shape, and inside of which concrete is casted and that is backfilled as a part of a concrete structure. 
     
     
         11 . A pavement body characterized by that a middle layer part is formed by laying a porous aggregate mixture made by mixing a porous material with a solidification material of a cement system on a concrete floor slab overhanging from a base part, and a surface layer part is formed by laying a surface layer material on the middle layer part so that a base course having a water absorbing property and a water permeable property is formed on a platform of a train.