JPH06123101A - Constructing method for base using scrap-shaped rubber chip as aggregate and foundation ground - Google Patents

Abstract

PURPOSE:To construct a base and a foundation ground with measures taken against even soft geological nature or an ill drained place by cutting and breaking a used rubber tire into chip, and utilizing it as a constructing aggregate. CONSTITUTION:The shape of base construction is formed by filling a cut on a bottom soil 1, and its inner face is spreadly covered by a permeable sheet, and scrap-shaped rubber chips 3 are filled up inside it. The permeable sheet prevents the burying of the rubber chips 3 into the bottom soil 3, and the upper part of a layer filled with the rubber chips 3 is provided with an unscreened gravel layer 4 to uniformly scatter load transmitted from a road surface. In addition, a substrate pavement 5 and a finished pavement 6 for the road surface are executed on the unscreened gravel layer 4, and as occasion demands, curb stone 7, drain closed conduit 8 and drain pipe line 9 are provided.

Description

[Detailed Description of the Invention] The foundation of a structure on which heavy objects such as roads, tracks, and airport runways run is conventionally compacted by compressing and crushing gravel, sand, earth and sand, etc. Let me achieve that purpose. However, in recent years, it has been difficult to obtain aggregates of the best quality at any place. On the other hand, conditions for construction work such as soft geology, high groundwater level, shallow freezing depth, and poor drainage are getting worse day by day. Conceptually, the properties required for aggregates used in construction work are as follows. Forming a stable structure by compaction, having excellent durability even in contact with water and air, having no harmful components that dissolve in water, being freely available anywhere, and having an appropriate price It seems that there is something. The technology of the rubber industry, which has a long history, such as rubber tires for automobiles, has almost all the requirements for aggregates for construction work. If it is deposited in the form of slices, it can be expected as an aggregate that is not inferior to gravel or crushed stone in terms of stability against gravity loads and load resistance. In terms of price, it will be sufficiently satisfied by cutting and crushing used waste tires into pieces. The implementation of the present invention will be described below with reference to FIGS. 1 and 2 as specific examples. FIG. 1 is a schematic view of an example of a cross-section of a roadbed using a rubber chip in the form of a section as an aggregate. Spread a water-permeable sheet such as 2) and fill the inside with a piece of rubber chip (3). In this case, if necessary, a suitable adhesive or asphalt may be used. In this case, the role of the non-woven fabric (2) is to prevent the contact-like rubber chips from settling or being buried in the original soil. Further, by forming a gravel or notched gravel layer (4) on the filling layer of the rubber chips, the settling of the rubber chip layer and the distribution of the load from the road surface are evenly measured. A base pavement (5) and a road surface (finishing pavement) (6) are further applied thereon to complete the structure. Curbstone (7), drainage culvert (8), if necessary
Provide a drainage line (9). Fig. 2 is an example of the construction method in the embankment type with soft geology and spring geology. The original ground (1) is plowed in consideration of the groundwater level and freezing depth, etc., and a water-permeable sheet (2) such as a non-woven fabric is installed, and a rubber chip (3) in the form of a section is filled in it, and gravel is cut on it. (4) Perform landfill business such as. If necessary, block for slope protection, etc. (10) Build work.

[Brief description of drawings]

FIG. 1 is a schematic view of an example of a construction cross section of a roadbed using a rubber chip in the form of a piece as an aggregate. Figure 2 shows an example of a section of using rubber chips in the form of a strip when conducting a landfill business on a soft stratum.

Claims (1)

[Claims] A method for constructing a roadbed and a foundation ground using rubber chips (including used automobile tires that have been cut and crushed) molded in a slice shape as an aggregate.