JP4057131B2 - Civil engineering reinforcement sheet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a civil engineering reinforcing sheet such as a core material for reinforcing a subsidence asphalt mat and a road asphalt pavement reinforcing material used for a foundation such as a breakwater in construction such as harbors and revetments.
[0002]
[Prior art]
Glass cloth is usually used for reinforcing sheets for civil engineering such as core materials for reinforcing asphalt mats for prevention of subsidence and reinforcing materials for road asphalt pavement used for foundations such as breakwaters in construction of harbors and seawalls. However, it has been possible to satisfactorily cope with the conventionally required performance by using a plain weave, twill weave, satin weave or simple leash weave.
However, there has also been a need for civil engineering reinforcement sheets such as high-performance asphalt mat reinforcement cores and road asphalt pavement reinforcements, and the strength of glass cloth as a reinforcement has also increased dramatically. It has been requested, and it has become impossible to cope with the extension of the conventional glass cloth.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of the present situation, and an object of the present invention is to provide a reinforcing sheet for civil engineering that maintains a required opening degree even when impregnated with asphalt or a resin and has high strength.
[0004]
[Means for Solving the Problems]
The reinforcing sheet for civil engineering of the present invention is a woven fabric woven by a plurality of long glass fiber yarns and a plurality of long glass fiber yarns arranged in a direction orthogonal to the long glass fiber yarns, It is arranged in such a way that the portions that form a wide bundle of yarns that are arranged close to each other and are entangled with an entanglement yarn and formed into a woven shape are alternately formed with portions where the long glass fiber yarn does not exist. The latter long glass fiber yarns are arranged at intervals.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
[0006]
1 and 2, reference numeral 1 denotes a civil engineering reinforcement sheet, which is woven in a lattice pattern with a plurality of long glass fiber yarns 2... And a plurality of long glass fiber yarns 3 arranged in a direction orthogonal thereto. This is a woven fabric.
[0007]
The long glass fibers used in the present invention are preferably made of glass fibers having a fiber diameter of 3 to 25 μm, and are preferably made of 200 to 20000 glass fibers. The number of twists is preferably 0 to 1.0 times / 25 mm. Thereby, the thickness can be reduced to 3 mm or less.
[0008]
The former long glass fiber yarns 2,... Forming the civil engineering reinforcing sheet 1 are arranged in the vicinity of a plurality of pieces, and the portions 5 forming a wide bundle of yarns that are entangled with the entanglement yarn 4 and are entangled in a woven form. The glass long fiber yarns 3 are arranged so as to be alternately formed with the portions 6 where the glass long fiber yarns are not present, and the latter glass long fiber yarns 3 are arranged at regular intervals of about 0.5 to 3 cm. ing.
[0009]
The width of the portion 5 forming the wide-width bundle yarn group is preferably 25 to 60 mm, and the width interval is preferably 25 mm or more. The strength of the wide bundling yarn group is desirably 500 to 2000 kg / 25 mm.
[0010]
The portions 5 of the long glass fiber yarns 2,..., Which are formed into a wide bundle of yarns, are bundled in a woven form with the entanglement thread 4, so that the lattice shape can be stably held without being separated. Therefore, it is possible to obtain a high-strength reinforcing sheet for civil engineering.
[0011]
The entangled weaving by the entangled yarn 4 of the present invention can be various entangled weaves, and may be performed with one entangled yarn for the portion 5 forming one wide bundled yarn group, Two or more entangled yarns may be used.
[0012]
When one entangled yarn is used, the yarns are usually entangled so as to be entangled up to both ends of the portion 5 forming one wide bundled yarn group, but when two entangled yarns are used, two entangled yarns are used. Are engaged with the other glass long fiber yarns 3 at both ends of the portion 5 forming one wide bundled yarn group, and then proceed in different directions, cross at the center, and other ends at different ends. It is desirable to engage with the long glass fiber yarn 3.
In this case, it is desirable to engage with the other long glass fiber yarns 3 every other plurality in order to prevent yarn breakage.
[0013]
When two or more entangled yarns are used, in addition to the above case, only the two end edges of the portion 5 forming one wide converging yarn group are entangled with one entangled yarn 4 and converged. Anyway.
[0014]
The entangled weave by the entangled yarn 4 of the present invention may be a combination of the above-mentioned various entangled weaves, and the entangled yarn 4 uses not only long glass fibers but also heat-sealable fibers. May be.
[0015]
In the civil engineering reinforcing sheet of the present invention, the glass long fiber yarns 3 are arranged at intervals, and the gap portion with the interval has only the glass long fiber yarns 2,. It can be easily wound in a roll shape, wound in a roll shape during transportation and storage, and can be used after being pulled out and cut by a necessary area during use.
[0016]
As described above, the reinforcing sheet for civil engineering of the present invention requires a dramatic increase in strength while maintaining the opening degree, and uses a glass roving yarn to create the necessary opening degree by using a bundle weaving technique. Then, the entire bundle of warps is entangled with a thin glass yarn by a technique not conventionally used so that the degree of opening does not change by post-processing.
[0017]
Although the civil engineering reinforcing sheet of the present invention can be used as it is, it can be used by impregnating and applying resin such as SBR and asphalt. As a result, the strength is increased and the adhesion of the asphalt is improved. Further, even if a part is cut during use, the cut portion is not frayed.
[0018]
In the civil engineering reinforcement sheet of the present invention, two civil engineering reinforcement sheets and glass long fiber yarns 2,... And glass long fiber yarns 3,. By injecting molten asphalt from above, sufficient strength in both the vertical and horizontal directions can be obtained. The molten asphalt injected from above passes through the gap between the long glass fiber yarns 2, ... and the long glass fiber yarns 3, ... and becomes integrated with the lower molten asphalt, and the civil engineering reinforcement sheet is firmly fixed in the asphalt. Will be.
[0019]
Since the reinforcing sheet for civil engineering of the present invention uses glass fiber, it has excellent strength and maintains an opening degree during transportation, storage, and asphalt mat manufacturing, so that high strength asphalt It is possible to manufacture a mat.
[0020]
The civil engineering reinforcing sheet of the present invention can be used as follows.
As an example, the asphalt base layer is paved on the roadbed and roadbed layer, the tack coat is sprinkled, the civil engineering reinforcement sheet is laid, and the asphalt surface layer is paved to reinforce the tensile strength. A paved body can be formed.
As another example, first, the foundation is prepared, the formwork is installed, the lower asphalt mastic is cast at 160 to 200 ° C., the lifting degreasing wire is placed thereon, and the civil engineering of the present invention is placed thereon. An asphalt mat for preventing scouring can be manufactured by placing two reinforcing sheets so that both warp yarns are orthogonal to each other and placing an upper layer asphalt mastic on the reinforcing sheet.
[0021]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, even if it impregnates asphalt or resin, it can provide the reinforcement sheet | seat for civil engineering which maintains the required opening degree and has high intensity | strength.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of a civil engineering reinforcing sheet of the present invention.
FIG. 2 is an enlarged plan view of another example of the civil engineering reinforcing sheet of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reinforcing sheet for civil engineering 2, ... Glass long fiber yarn 3, ... Glass long fiber yarn 4 Entanglement yarn 5 Part which made wide converging yarn group 6 Part where glass long fiber yarn does not exist

Claims (1)

A woven fabric composed of a plurality of long glass fiber yarns and a plurality of long glass fiber yarns arranged in a direction orthogonal thereto, wherein the former long glass fiber yarns are arranged close to each other. The long glass fiber yarns are arranged so as to be alternately formed with the portions of the wide bundle yarns that are entangled with the entangled yarn and the glass long fiber yarns are not present. A reinforcing sheet for civil engineering, characterized by being arranged at a distance.

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