JPH09209320A - Repairing/fixing method for guide light of runway - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide high fluidal performance for a short time at repairing pavement surrounding guide light part by constructing one or more layers in which aggregate and cement asphalt mortar are charged in order and solidified in an excavated part. SOLUTION: Inside an excavated part of pavement 2 which is formed by cutting off the surrounding light part, a tack coat layer is laid and aggregate 6 is laid thereon, and lightly pressed by rolling. The cavities of the aggregate is filled with CA mortar 7, aggregate 8 of smaller maximum grain size than the former is levelingly laid thereon, lightly pressed by rolling so as to be flush with the surface of the existing pavement 2, and then CA mortar 7 is charged and solidified so as to form a light installation base 9. A light installation space part 10 is formed in the base 9 so as to arrange a light pedestal therein, a necessary wiring cord 12 is connected to it, and the space is filled with epoxy resin mortar 13 and fixed. Further it is filled with aggregate 6 and CA mortar 7 and solidified, the upper face of the base 9 is cut and removed, and heated asphalt mixture is paved to form a surface layer 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repairing and fixing a guide light on a runway. More specifically, in the event that a guide light buried in a runway or taxiway of an airplane at an airfield (hereinafter simply referred to as “runway”) fails or the pavement around the guide light is damaged. The present invention relates to a method of repairing or replacing a guide light and repairing and fixing the pavement around the guide light.

[0002]

2. Description of the Related Art Repair of guide lights on an airfield runway must be completed within a limited period of time that does not interfere with the operation of the aircraft, and if the work takes several days, It is a very restrictive repair work that requires consideration such as backfilling the excavation holes etc. every time the process of the day is completed so that there is no hindrance to use as a runway.

The conventional method of repairing a guide light on a runway is to excavate and remove the peripheral portion of the pavement of the runway, including the installation location of the lamp to be repaired, and to form an asphalt concrete layer at 4-5 in the excavated portion. Form the lamp installation base on the layer, cut the lamp installation space on the lamp installation base, and install the lamp in the lamp installation space, and also install the lamp installation space. This is done by pouring goose asphalt into the remaining space of the section and solidifying it.

When using this method, the lamp installation base is
Since it has to be formed in several layers of asphalt concrete, it requires time for construction, and during nighttime construction in winter, it has the drawback of insufficient compaction due to the temperature decrease of asphalt concrete.

This conventional method also has the following points to be improved in order to use goose asphalt. 1) Goose asphalt must be manufactured in an asphalt plant and must be installed while being heated by a cooker car to a high temperature, which requires special equipment and special technology. 2) Since the amount of goose asphalt used is small, there are problems in handling such as temperature control,
Always left over. 3) Since the goose asphalt to be handled is heated to a high temperature, there is a safety problem. 4) Because the goose asphalt we handle is hot,
Requires time for cooling curing. 5) Since the goose asphalt has a relatively low flow resistance during service, when the road surface temperature is high in the summer, a large aircraft such as a jumbo machine passes by and the paved portion of the goose asphalt is immediately attached to the periphery of the lamp. It may flow or the lamp may tilt.

Moreover, since the size of airplanes has been increasing year by year, the damage to these lamps has been increasing year by year, and there is an urgent need to deal with them.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of these conventional methods, and improves the flow resistance of the pavement portion in the peripheral portion of the lamp when in service, and also the lamp. It is an object of the present invention to provide a method for repairing and fixing a guide light on a runway that enables normal temperature construction that can eliminate the inclination of itself.

[0008]

The present invention uses an aggregate and cement asphalt mortar (hereinafter referred to as "CA mortar") for repairing a guide light on a runway, and further, if necessary. The above problems have been solved by using a fiber mat, a fiber net, or the like.

That is, the present invention relates to a method for repairing and fixing a guide light on a runway, comprising the steps of: (a) excavating a peripheral portion of the runway including a location of a lamp to be repaired embedded in a pavement body. Removing step, (b) forming a lamp installation base by filling and solidifying the excavated portion with aggregate and CA mortar, (c) forming a lamp installation space in the lamp installation base A step of cutting and forming, (d) a step of installing a lamp base in the lamp installation space, (e) filling the remaining space in the lamp installation space with aggregate and CA mortar A method for repairing and fixing a guide light on a runway, characterized by including a step of solidifying. Further, (f) after the step (e), the upper surface of the lamp installation base is provided. A step of cutting and removing a part of the existing pavement, (g) The step of paving the heated asphalt mixture on the open part to form the surface layer, (h) the step of removing the surface layer and the lamp installation base above the lamp base and fixing the lamp body to the lamp base. And (i) sealing the peripheral space of the lamp body, the method for repairing and fixing a guide light on a runway is provided.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a method of repairing and fixing a guide light on a runway according to the present invention will be described in detail.

The term "lighting device" as used in the present invention refers to various types of guide lights that are embedded in the runway and taxiway in an array.
Usually, it consists of a lamp base that supports the lamp and a lamp body that has a light-emitting unit inside, and the lamp base and the lamp body are screwed together,
It is detachable by means of bolt tightening. Further, the lamp base is provided with a lid, and when the lamp body is not attached, the attachment portion can cover the lid.

The aggregate used in the present invention is an aggregate for paving described in "Asphalt Pavement Guidelines" issued by the Japan Road Association, and includes crushed stone, crushed stone, gravel, steel slag and the like. Further, asphalt-coated aggregates obtained by coating these aggregates with asphalt, recycled aggregates, and the like can also be used. In addition, as a granular material similar to this, an artificial fired aggregate, a fired foam aggregate, an artificial lightweight aggregate, a ceramic grain, an emery or the like can be used. Further, it may be an aggregate having a continuous grain size or an aggregate having a single grain size. Generally, No. 6 crushed stone with a particle size range of 5 to 13 mm and a particle size range of 13
~ 20mm No. 5 crushed stone, moreover, the particle size range is 20 ~ 3
0 mm crushed stone No. 4 is used. And, preferably,
It is advisable to coat these aggregates with about 0.3 to 1% by weight of straight asphalt.

The CA mortar used in the present invention means 50 to 230 parts by weight of a polymer-containing asphalt emulsion, 0 to 75 parts by weight of a rapid hardening admixture, and 100 parts by weight of cement.
Fine aggregate 60 to 330 parts by weight, setting regulator 0 to 5 parts by weight,
CA mortar consisting of 0 to 0.05 parts by weight of aluminum powder and a required amount of added water.

As the cement used for CA mortar, for example, ordinary Portland cement, early strength Portland cement, super early strength Portland cement, moderate heat Portland cement, blast furnace cement, silica cement,
Examples include fly ash cement, sulfate resistant cement, and jet cement.

The polymer-containing asphalt emulsion used for CA mortar is a nonionic asphalt emulsion obtained by mixing an asphalt emulsion and a resin emulsion in a weight ratio of 95 to 75: 5 to 25. The asphalt emulsion used for the polymer-containing asphalt emulsion is a nonionic asphalt emulsion, which is prepared by emulsifying and dispersing asphalt in water using a nonionic emulsifier, a dispersant, a stabilizer and the like. The solid content of the nonionic asphalt emulsion is usually 40 to 70.
% By weight. When the solid content is less than 40% by weight, viscoelasticity cannot be imparted to the CA mortar, whereas when the solid content exceeds 70% by weight, the viscosity is increased and the viscosity is good. CA mortar cannot be obtained. As for the asphalt in the nonionic asphalt emulsion, the penetration (2
It is preferable to use one having a temperature of 5 ° C. of about 40 to 300.

The resin emulsion used for the polymer-containing asphalt emulsion includes SBR emulsion, acrylic emulsion, EVA emulsion and the like.
In the present invention, an SBR emulsion is mainly used. The SBR emulsion is weakly alkaline and has a good mixability with the cement and the nonionic asphalt emulsion. The solid content of the SBR emulsion is:
Usually, it is 50% by weight.

Polymer-containing asphalt emulsions are usually
It can be produced by uniformly mixing and dispersing a resin emulsion in a nonionic asphalt emulsion by high-speed stirring.

The ratio of the nonionic asphalt emulsion to the resin emulsion in the polymer-containing asphalt emulsion is
Usually, the weight ratio is in the range of nonionic asphalt emulsion: resin emulsion = (95-75) :( 5-25). When the ratio of the resin emulsion is less than 5, sufficient viscoelasticity cannot be imparted to the CA mortar, while when the ratio of the resin emulsion exceeds 25,
The polymer-containing asphalt emulsion thickens and good mortar cannot be obtained.

The amount of polymer-containing asphalt emulsion used is usually 50 to 230 per 100 parts by weight of cement.
It is in the range of parts by weight. When the amount of the polymer-containing asphalt emulsion used is less than 50 parts by weight, viscoelasticity cannot be imparted to the CA mortar, whereas when the amount of the polymer-containing asphalt emulsion used exceeds 230 parts by weight, the CA mortar is used. Of the CA mortar reduces the supporting force of the CA mortar filled layer.

The rapid hardening admixture used in CA mortar is a mixture obtained by mixing calcium aluminate and anhydrite in a weight ratio of 1: 1.4 to 2.9. This mixture imparts a rapid hardening property to the cement and CA
Gives mortar early strength development. If the compounding ratio of anhydrous gypsum is less than 1.4, the rapid hardening property is weak, and if the compounding ratio of anhydrous gypsum exceeds 2.9, the rapid hardening property becomes too strong and it becomes difficult to control the pot life.

The amount of the rapid hardening admixture used is usually in the range of 0 to 75 parts by weight with respect to 100 parts by weight of cement. If the amount of the rapid-hardening admixture used exceeds 75 parts by weight, the rapid-hardening property becomes too strong and the work becomes difficult.

The fine aggregate used for CA mortar includes river sand, hill sand, mountain sand, screenings, silica sand and the like. Its grain size is usually 1.2 (FM value) (coarse grain ratio).
The range of -1.6 is preferable. When the FM value is less than 1.2, the CA mortar is thickened and the filling property is deteriorated, whereas when the FM value is more than 1.6, the materials are easily separated.

The amount of fine aggregate used is usually 100% cement.
It is in the range of 60 to 330 parts by weight with respect to parts by weight. When the amount of fine aggregate used is less than 60 parts by weight, the CA mortar after curing tends to cause volume contraction, whereas when the amount of fine aggregate used exceeds 330 parts by weight, material separation occurs. Work becomes difficult.

The setting regulator used for CA mortar is
Examples of polycarboxylic acids include jet setters, which are useful for adjusting the pot life of CA mortar. The amount of the setting regulator used is usually in the range of 0 to 5 parts by weight with respect to 100 parts by weight of cement. When the amount of the coagulation modifier used exceeds 5 parts by weight, the pot life is sufficient, but early strength development cannot be expected.

As the additive water used for CA mortar,
Usually, fresh water is used. For example, tap water, industrial water,
Ground water, river water, etc.

In addition, aluminum powder and other additives such as a fluidizing agent and an air entraining agent can be used in the CA mortar if necessary.

The CA mortar used in the present invention can be produced by the following preparation method. That is, first, a required amount of polymer-containing asphalt emulsion is put into a predetermined container, and each required amount of added water, a coagulation modifier, and an additive is added with stirring using a hand mixer to prepare a mixed solution. Next, the CA mortar of the present invention can be prepared by adding required amounts of cement, a quick-hardening admixture, and fine aggregate to this mixed solution and kneading with high speed stirring. The prepared CA mortar is immediately subjected to the injection work.

The fiber mat used in the present invention includes synthetic fibers or semi-synthetic fibers such as acrylic, vinylon, polypropylene, polyester, polyamide, aromatic polyamide and polyvinylidene chloride, natural fibers, glass fibers, recycled fibers, metal fibers. Fibers such as woven cloth, non-woven cloth, knitted cloth, etc. are used, and as the fiber net, those in which these fibers are knotted and connected into a net shape are used, but among them, glass fiber Mats are preferred. If these fiber mats or fiber nets are previously impregnated with a bituminous material such as rubber asphalt, there is an advantage that the adhesiveness to CA mortar and the like is improved.

The bituminous emulsions used in the tack coat in the present invention are asphalt emulsions and modified asphalt emulsions. The modified asphalt emulsion is used when it is desired to increase the adhesive force. The amount of spraying the tack coat is 0.3-
It is 0.6 (l / m ² ).

The asphalt emulsion is obtained by emulsifying and dispersing asphalt in water with an emulsifier, a dispersant, a stabilizer and the like. Depending on the type of emulsifier used for emulsification, a cationic asphalt emulsion, an anionic asphalt emulsion, a nonionic asphalt emulsion, It can be divided into clay type emulsions. In the present invention, a nonionic asphalt emulsion is mainly used. As nonionic asphalt emulsion,
For example, there is MN-1 in the standard of JIS K2208 petroleum asphalt emulsion.

The modified asphalt emulsion is prepared by mixing asphalt with rubber, a high molecular weight polymer or the like and modifying the asphalt to be emulsified and dispersed in water by using an emulsifier, a dispersant, a stabilizer, or the like. It is produced by adding and mixing rubber, latex of high molecular polymer, emulsion or the like to the emulsion. As a typical modified asphalt emulsion, PKR-T in the standard of asphalt emulsion containing rubber of Japan Asphalt Emulsion Association
And PKR-S.

Next, the outline of the method for repairing and fixing the guide light on the runway according to the present invention will be described with reference to the drawings.

First, as shown in FIG. 1, the lamp (1) in the pavement (2) forming the runway in which the lamp (1) to be repaired is buried by a disk-type concrete cutter or the like. The peripheral portion is cut (3).

Then, as shown in FIG. 2, a breaker or the like is dug up and removed to form a dug portion (4).
The size of the excavated portion (4) is approximately 150 cm in length × 80 cm in width × 25 cm in depth.

Then, as shown in FIG. 3, the excavation part (4)
After applying the tack coat layer (5) on the inner surface of the above, the aggregates (6), (6) ... Then, these aggregates (6)
(6) ... Fill the space between them with CA mortar (7). Subsequently, as shown in FIG. 4, an aggregate (8) (8) having a smaller maximum particle size than the aggregate (6) (6) ... .. Spreading and leveling, lightly rolling with a vibro plate to finish at the same height as the surface of the existing pavement (2), and then these aggregates (8) (8) ..
The mortar installation base (9) is formed by filling the space between them with CA mortar (7) and solidifying.

The particle size of the aggregate may be the same in both the lower layer and the upper layer, but it is better to reduce the maximum particle size of the upper layer aggregate.
The finished surface of the lamp installation base (9) becomes more precise,
It has the advantage of smoothing. Further, for example, if an aggregate coated with about 0.5% by weight of asphalt is used, C
The sense of unity between the A mortar and the aggregate can be further enhanced.

In the above explanation, the aggregates (6) (6) ...
The CA mortar (7) was filled in the voids between the aggregates after being spread and leveled, but the order may be reversed. That is, after applying the tack coat layer (5) to the inner surface of the excavated portion (4), first, the CA mortar (7) is filled to a predetermined depth, and the aggregate (6) is filled in the filled CA mortar (7). ) (6) ...
.. and CA mortar (7) may be integrated and solidified.

The CA mortar (7) is first filled and the filled CA mortar (7) is filled with aggregates (6) (6).
Injecting .. has the advantages that workability is improved, the porosity of the formed lamp base (9) is reduced, and higher durability is obtained.

In the above description, the lamp installation base (9)
Is composed of upper and lower two layers, but of course it may be a single layer, or may be a multilayer of three or more layers.
In the case of a single layer, the particle size of the aggregate to be used may be one type, but the aggregate having different maximum particle sizes in the thickness direction may be used. In the case of multiple layers, aggregates of the same grain size may be used for all layers, but the grain size of the aggregate may be changed so that the maximum grain size of the aggregate of the top layer is the maximum of the aggregates of other layers. If the particle size is smaller than the particle size, the finished surface of the surface of the lamp installation base (9) becomes fine and smooth, which is preferable. In either case of a single layer or a plurality of layers, the aggregate used may have a single particle size or a continuous particle size.

When the lamp installation base (9) is composed of two or more layers, it is possible to lay a fiber mat or a fiber net between the layers. When the fiber mat or the fiber net is laid between the layers, the durability of the finished lamp installation base (9) is improved due to the reinforcing effect of the fiber mat or the fiber net.

Then, as shown in FIG. 5, the lamp installation base (9) is cut and removed by using a cylindrical cutter, a disk-shaped concrete cutter, and a breaker to remove the lamp installation space. (10) is formed.

Next, as shown in FIG. 6, the lamp base (11) is arranged in the lamp installation space (10), and the wiring cords (12) (12) of the lamp base (11) are arranged. ) Is connected. Then, the lower portion of the lamp base (11) and the wiring cords (12) and (12) are connected to the epoxy resin mortar (1
Fix by filling 3). After that, the aggregates (6) and (6) are filled to fill the remaining space (10) for installing the lamp.
..... Spread and level, and AC mortar (7) in those voids.
And the upper part of the aggregate (6) (6) ...
.. Aggregates (8) (8) with a maximum particle size smaller than that are spread and leveled, and AC mortar (7) is filled in the voids and solidified.

The filling order of the aggregate and CA mortar in this case is CA mortar first and aggregate later, as in the case of forming the lamp installation base (9). I don't mind.

In addition, the remaining space for installing the light base (1
0) does not necessarily have to be backfilled with two layers, but may be backfilled with one layer, or may be backfilled with multiple layers of three or more layers, similar to the above-mentioned lamp installation base (9). is there. In the case of a single layer, the particle size of the aggregate to be used may be one kind, but the aggregate having different maximum particle sizes in the thickness direction may be used.
In the case of multiple layers, it is possible to use aggregate with the same grain size in all layers, but if the maximum grain size of the aggregate in the top layer is made smaller than other layers, the finished surface of the surface will be Is fine and smooth, which is preferable. In either case of a single layer or a plurality of layers, the aggregate used may have a single particle size or a continuous particle size.

Even when the backfilled portion is formed in two or more layers, it is preferable to interpose a fiber mat or a fiber net between the layers, because further durability can be obtained.

Next, as shown in FIG. 7, the upper surface of the lamp installation base (9) including a part of the existing pavement (2) is cut and removed by a pavement cutting machine and a disk-type concrete cutter. To do. Then, as shown in FIG. 8, the entire surface of the removed portion is thoroughly cleaned, a tack coat is applied, and then the heated asphalt mixture is paved to form a surface layer (14).

Finally, as shown in FIG. 9, the upper portion of the lamp base (11) is removed into a cylindrical shape by a cylindrical cutter, and the lamp body (15) is replaced with the lamp body as shown in FIG. The fixing and fixing method of the guide light is completed by fixing the fixing lamp to the base (11), filling the peripheral portion thereof with epoxy resin mortar and sealing the same.

The present invention will be described in more detail based on the following examples, but it goes without saying that the repair fixing method of the present invention is not limited to these examples.

[0049]

[Example 1] A guide light was repaired on an airport runway. First, after marking the road cutting position on the road surface where the lamp failed, the road surface was cut using a disk-type concrete cutter. The size of the excavated portion was 150 cm in length × 80 cm in width × 25 cm in depth. After excavating, it was dug using a breaker.

Next, after removing the damaged lamp body, lamp base, wiring cord, etc., and cleaning the excavation part, the inner surface of the asphalt emulsion containing cationic rubber (manufactured by Catiosol GM Nichireki Co., Ltd.) Was sprayed as a tack coat. Next, after crushing No. 4 crushed stone precoated with 0.5% by weight of asphalt to 7 cm below the finished surface of the pavement, CA mortar was injected. further,
Precoated with 0.5% by weight asphalt 6
The crushed stones were laid evenly on the pavement surface and CA mortar was injected in the same manner. The ratio of the CA mortar and the precoated crushed stone is the volume ratio (%), and CA mortar: precoated crushed stone =
It was set to 50:50. Traffic was released 3 hours after filling.

The CA mortar used in this example was composed of 100 parts by weight of ordinary Portland cement, 116.7 parts by weight of a polymer-containing asphalt emulsion, 66.67 parts by weight of a rapid hardening admixture, 100 parts by weight of fine aggregate, and a setting agent. Conditioner 0.6 parts by weight, aluminum powder 0.05 parts by weight, added water 35
It was a CA mortar consisting of parts by weight. For cement, quick-setting admixture, fine aggregate, and aluminum powder, APH manufactured by Onoda Co., Ltd. (APH is ordinary Portland cement,
The rapid-hardening admixture, silica sand No. 6 (produced in Yamagata), and aluminum powder were blended in the above proportions. )It was used.
As the polymer-containing asphalt emulsion, Nichireki PMH Emulsion manufactured by Nichireki Co., Ltd. (nonionic asphalt emulsion: resin emulsion = 90: 10, concentration 59)
%) As a rapid hardening admixture, calcium aluminate and anhydrous gypsum manufactured by Onoda Co., Ltd. in a weight ratio of 1.0: 2.
APH composed of polycarboxylic acid manufactured by Chichibu Onoda Cement Co., Ltd. as a coagulation modifier by mixing in a ratio of 0
Tap water was used as a water additive for the setter.

The CA mortar was adjusted using a mortar mixer. The procedure is as follows: Nichireki PMH
After adding emulsion, water and setting regulator and kneading for 1 minute,
APH was added, and the mixture was further kneaded for 3 minutes to prepare a mixed solution. The temperature of the CA mortar was 12 ° C.

The CA mortar kneaded up was used after confirming that the flow time was in the range of 6 to 10 seconds.

Separately, the following tests were conducted in order to confirm the physical properties of CA concrete, which is a solidified mixture of this CA mortar and precoated crushed stone. That is, the CA mortar and the precoated crushed stone (No. 6 crushed stone) were mixed in volume ratio (%)
In the ratio of CA mortar: precoated crushed stone = 50: 50, a mold for a Marshall test (diameter 101.6 m
m, height 76 mm) and completely cured to prepare a specimen for uniaxial compression test. The wheel tracking test sample was prepared in the same manner as the uniaxial compression test sample, except that a wheel tracking test mold (30 cm × 30 cm × 5 cm) was used. Table 1 shows the results of the uniaxial compression test and the wheel tracking test.

[0055]

[Table 1]

As is clear from the results of Table 1, this CA
The uniaxial compressive strength after 3 hours of curing the concrete is 18.
At 3 kgf / cm ² (loading speed 50 mm / min), the target value of 15 kgf / cm ² was satisfied, and it was confirmed that traffic can be released within 3 hours of curing after construction.

On the second day (the next day), a portion corresponding to the lamp installation position of the constructed lamp installation base was cut with a cylindrical cutter having a diameter of 30 cm, and a groove having a width of 15 cm was cut and removed for wiring. Then, the space for installing the lamp was formed. The lamp base is placed in this lamp installation space, and the wiring cords provided on the lamp base are connected to the existing wiring cords to pass through the lower side of the lamp base and the wiring cords. After fixing the pipe and the epoxy resin mortar, the space for installing the lamp was filled with the aggregate and CA mortar in the same manner as the previous day, and the traffic was opened after 3 hours as in the previous day.

On the third day, the surface of the lamp installation base and the surrounding pavement were cut and excavated to a depth of about 5 cm using a disk-type concrete cutter and an excavator.
After removing the excavated waste materials, a tack coat was applied to the inner surface of the excavated surface, and then the surface was formed by paving with a modified type II hot asphalt mixture having improved fluidity.

On the 4th day, the surface layer portion directly above the lamp base and the portion corresponding to the lamp installation position of the lamp installation base were
Along with the surface layer, cut with a cylindrical cutter with a diameter of 30 cm,
After removing the lid of the lamp base and attaching and connecting the lamp body, the lamp body was fixed to the lamp base with bolts. The repair work was completed by injecting epoxy resin mortar into the space around the lamp body and sealing it. Each of the above steps can be completed in a short time during a time period that does not hinder the operation of the aircraft.After repairing, the repaired guide light was immediately used, but there was no inclination of the lamp itself and it was used. Immediately after the start, I was able to withstand the aircraft load.

[0060]

Example 2 A guide light was repaired in the same manner as in Example 1 except that the order of filling the precoated crushed stone and the CA mortar was reversed. However, the amount of the crushed stone pre-coated with CA mortar was volume ratio (%), and CA mortar: crushed pre-coated stone = 55: 45.

Each process can be completed in a short time during a time period that does not hinder the operation of the aircraft. After the repair, the repaired guide light was immediately used, but the lamp itself did not tilt. , Immediately after the start of use, it was able to withstand the load of the aircraft. In addition, the CA concrete in which the precoated crushed stone and the CA mortar are mixed and solidified is of high quality, and its porosity is smaller than that obtained by laying the precoated crushed stone first and then filling and solidifying the CA mortar. Workability has also improved.

[0062]

Example 3 Each CA mortar of the compounding examples as shown in Table 2 was mixed with precoated crushed stone to prepare a CA concrete, and it was tested whether the CA mortar and the CA concrete of each compounding example can be used in the present invention. did.

[0063]

[Table 2]

Specimens for testing uniaxial compressive strength are:
A precoat No. 6 crushed stone coated with 0.5% by weight of asphalt was spread in a mold for a Marshall test (diameter: 101.6 mm, height: 76 mm), and then CA mortar was filled therein. A test piece for testing the simple bending strength was prepared as follows. That is, in a form frame of 30 cm in length × 30 cm in width × 5 cm in height,
The same precoat No. 6 crushed stone as described above was spread, and then CA mortar was filled therein and cured. After wet air curing,
5cm x 5cm x 20c length
A sample was cut into a size of m.

The static elastic modulus is 50, which is the maximum compressive strength.
% Is the elastic modulus obtained from the tangent line. Regarding the filling property of CA mortar, the increase in the flow time when collected in a container and allowed to stand for 5 minutes was 10 times greater than that when not allowed to stand.
Those having a time of not less than a second and those having CA mortar separated when they were collected in a container and allowed to stand for 5 minutes were judged to be defective. The test results are shown in Table 3.

[0066]

[Table 3]

As is clear from Table 3, the CA concrete prepared by using the CA mortar of Comparative Example 1 containing a large amount of the polymer-containing asphalt emulsion could not obtain high strength in a short period of time, and the CA concrete of the present invention could not be obtained. It turns out that it is not preferable to use for the repair fixing method of the guide light. On the contrary, as in Comparative Example 2, when the amount of the polymer-containing asphalt emulsion is small, high strength can be obtained in a relatively short time, but the filling property is poor, and again, it is not preferable for use in the present invention. I understand.

[0068]

[Embodiment 4] Similar to Embodiment 1, repair of a guide light on an airport runway was carried out. First, after marking the road cutting position on the road surface where the lamp failed, the road surface was cut using a disk-type concrete cutter. The size of the excavated part is
The length was 150 cm, the width was 80 cm, and the depth was 25 cm. After excavating, it was excavated using a breaker.

Next, after removing the damaged lamp body, lamp base, wiring cord, etc., and cleaning the excavation part, the inner surface of the asphalt emulsion containing cationic rubber (Cathizol GM Nichireki Co., Ltd.) Was sprayed as a tack coat. Then, the same CA mortar as used in Example 1 was poured, and 0.5 wt% of asphalt was added to the CA mortar in the same manner as used in Example 1.
The crushed stone of No. 4 which had been coated and pre-coated was added, and the laid surface was laid evenly until the construction surface where both were integrated was 15 cm below the pavement surface.

On top of this, an alkali-resistant glass fiber mat (manufactured by Asahi Glass Co., Ltd., ARCSM, basis weight 485 g /
m ² and thickness 8 mm) were laid. Further, after pouring CA mortar, similar crushed No. 4 crushed stone was laid evenly until it was 8 cm below the pavement surface, and the same alkali-resistant glass fiber mat was laid on it. Further, after pouring CA mortar, No. 6 crushed stone which was pre-coated with 0.5% by weight of asphalt was spread evenly on the paved surface. The ratio of the CA mortar to the precoated crushed stone in Example 4 was the same as in Example 2 in terms of volume ratio (%).
Then, CA mortar: precoated crushed stone was set to 55:45.

After that, the guide light was repaired and fixed in the same procedure as in Example 1 except that the order of filling the CA mortar and the precoated crushed stone was reversed, and the work was completed.

Each process can be completed in a short time during a time period that does not hinder the operation of the aircraft. After the repair, the repaired guide light was immediately used, but there was no inclination of the lamp itself. , Immediately after the start of use, it was able to withstand the load of the aircraft. Further, the CA concrete obtained by mixing and solidifying the precoated crushed stone and the CA mortar has high quality, and its porosity is smaller than that obtained by laying the precoated crushed stone first and then leveling and filling the CA mortar, and further, Since the glass fiber mat is laid between the layers, the durability is further improved.

[0073]

Example 5 CA in which a glass fiber mat is laid between layers
A test was carried out in the laboratory to confirm that the concrete is superior in strength as compared with the one having no glass fiber mat.

That is, the method for preparing the specimens for the simple bending test and the impact test was the same as that used in Example 1 and the same CA mortar used in Example 1 in a mold of 5 × 30 × 30 cm. Fill with asphalt coated No. 6 crushed stone,
1 cm from the bottom and 4 cm from the bottom,
The same glass fiber mat as that used in Example 4 was laid to prepare a specimen having a total of three CA concrete layers and a total of two layers of glass fiber mats between these layers. Further, the uniaxial compression test specimen was manufactured by using the same materials as those used in the simple bending test and impact test specimens and using the same Marshall test mold as in Example 1. The height of the uniaxial compression test specimen is 76
The laying position of the glass fiber mat in mm was one layer near the center of the height of the specimen.

Similarly, a comparative sample was prepared in the same manner except that the glass fiber mat was not laid.

A uniaxial compression test strength, a simple bending test strength, and an impact test were performed on the test piece and the comparative test piece. The test method is JIS A for uniaxial compression test.
1108 at a loading speed of 50 mm / min. In the case of a simple bending test, at a loading speed of 50 mm / min according to JIS A1106, and an impact test according to JIS A1408.
The iron ball weight was 1.8 kg and the drop height was 0.5 m. Here, each measurement result shows the average value of the measurement results of five specimens. The results are shown in Table 4.

[0077]

[Table 4]

As is clear from the results shown in Table 4, the fiber mats with reinforcement were compared with those without reinforcement.
Excellent results are shown in the uniaxial compression test strength, the simple bending test strength, and the impact strength.

[0079]

Since the present invention is constructed as described above, it has the following effects.

1) According to the present invention, since the aggregate and CA mortar are used as the fixing means of the lamp, it can be applied at room temperature and is excellent in workability, and it has a narrow portion and a complicated place. Also, it can be installed without the need for special equipment. 2) According to the present invention, since CA mortar is used, it has good adhesion to existing pavements and also has viscoelasticity. Therefore, it is possible to effectively absorb and mitigate impacts, vibrations, etc. due to heavy traffic such as jumbo machines. You can 3) According to the present invention, since the aggregate and CA mortar are used as the fixing means of the lamp, it has sufficient strength against heavy traffic load such as a jumbo machine and has excellent flow resistance. Therefore, the inclination of the lamp itself can be eliminated. In particular, when a pre-coated aggregate coated with asphalt or the like is used as the aggregate, it is possible to realize a method of repairing and fixing the guide light, which has further strength and flow resistance and is excellent in durability. 4) Further, according to the present invention, since the rapid-hardening CA mortar is used, a desired compressive strength can be obtained in a short time, and repair work can be performed for a short time without hindering the operation of the aircraft. 5) By laying a fiber mat or a fiber net as a reinforcing material between the layers, further excellent durability can be realized.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a repaired portion of a runway is cut open.

FIG. 2 is a vertical sectional side view showing a state in which an excavation portion is formed in a repaired portion.

FIG. 3 is a vertical cross-sectional side view showing a state in which an aggregate having a large particle diameter and CA mortar are filled under the excavation portion.

FIG. 4 is a longitudinal side view showing a state in which an aggregate having a small particle size and CA mortar are filled on the upper side of the excavated portion.

FIG. 5 is a plan view showing a state in which a lighting device installation space is provided.

FIG. 6 is a vertical cross-sectional side view showing a state in which a lamp base is arranged in a lamp installation space and backfilled with aggregate and CA mortar.

FIG. 7 is a vertical cross-sectional side view showing a state in which the surface is cut to provide a surface layer.

FIG. 8 is a vertical sectional side view showing a state in which a surface layer is provided.

FIG. 9 is a vertical cross-sectional side view showing a state in which a space for mounting the lamp body is formed.

FIG. 10 is a vertical cross-sectional side view showing a state in which the lamp body is attached and construction is completed.

[Explanation of symbols]

 (1) is a lamp (2) is a pavement (3) is a cutting line (4) is an excavated part (5) is a tack coat layer (6) No. 4 crushed stone (7) is CA mortar (8) No. 6 Crushed stone (9) is a base for installing a lamp (10) is a space for installing a lamp (11) is a lamp base (12) is a wiring cord (13) is an epoxy resin mortar (14) is a surface layer (15) Lamp body

Claims (15)

[Claims] 1. A method of repairing and fixing a guide light on a runway, comprising the step of: (a) excavating and removing a peripheral portion of a runway including a location of a lamp to be repaired embedded in a pavement body; (B) A step of forming a lamp installation base by filling and solidifying aggregate and cement asphalt mortar in the excavated portion, (c) Cutting and forming a lamp installation space in the lamp installation base Step (d) Step of installing a lamp base in the lamp installation space, (e) Filling and solidifying the remaining space in the lamp installation space with aggregate and cement asphalt mortar A method of repairing and fixing a guide light on a runway, comprising: 2. The step of filling and solidifying the aggregate and the cement asphalt mortar in the remaining space in the excavation part and / or the space for installing the lighting device is performed by first laying the aggregate and then leveling it. The method for repairing and fixing a guide light on a runway according to claim 1, wherein cement asphalt mortar is filled in the voids between the aggregates to be solidified. 3. The step of filling the aggregate and cement asphalt mortar into the remaining space of the excavation part and / or the space for installing the lamp and solidifying the cement and the cement asphalt mortar first, and then the cement. The repair and fixing method for a guide light on a runway according to claim 1, wherein aggregate is put into the asphalt mortar, and both are integrated and solidified. 4. A portion formed by filling and solidifying aggregate and cement asphalt mortar in the remaining space of the excavation part and / or the space for installing the lighting device is formed as a single layer. The repair and fixing method for a guide light on a runway according to claim 1, 2 or 3. 5. The method of repairing and fixing a guide light on a runway according to claim 4, wherein the aggregate has a single grain size or a continuous grain size. 6. A portion formed by filling and solidifying an aggregate and cement asphalt mortar in the remaining space in the excavation part and / or the space for installing a lighting device is formed as a plurality of two or more layers. The method for repairing and fixing a guide light on a runway according to claim 1, 2 or 3, wherein. 7. At least one of a plurality of two or more layers
7. The method for repairing and fixing guide lights on a runway according to claim 6, wherein the maximum particle size of the aggregate in one layer is different from the maximum particle size of the aggregate in another layer. 8. The method for repairing and fixing a guide light on a runway according to claim 7, wherein the maximum particle size of the aggregate in the uppermost layer is smaller than the maximum particle size of the aggregate in the other layers. 9. The method of repairing and fixing a guide light on a runway according to claim 6, further comprising a step of laying a fiber mat or a fiber net between the respective layers. 10. Following step (e), (f) a step of cutting and removing the upper surface of the lamp installation base including a part of the existing pavement, and (g) a hot asphalt mixture on the cut and removed part. (H) removing the surface layer above the lamp base and the lamp installation base to fix the lamp body to the lamp base, (i) the lamp base 7. The method further comprising the step of sealing the peripheral space of the main body.
7. A method for repairing and fixing a guide light on a runway according to 7, 8, or 9. 11. The aggregate as claimed in claim 1, 2, 3, 4, 5, 6, 7, wherein the aggregate is an asphalt-coated aggregate.
8. A repairing and fixing method for a guide light on a runway according to 8, 9, or 10. 12. Cement asphalt mortar contains 50 to 230 parts by weight of a polymer-containing asphalt emulsion, 0 to 75 parts by weight of a rapid-hardening admixture, 60 to 330 parts by weight of fine aggregate, and a setting modifier of 0 to 100 parts by weight of cement. Cement asphalt mortar consisting of ˜5 parts by weight, aluminum powder 0 to 0.05 parts by weight and added water. Alternatively, the method of repairing and fixing a guide light on a runway according to item 11. 13. The cement is ordinary Portland cement, early strength Portland cement, super early strength Portland cement, moderate heat Portland cement, blast furnace cement,
13. The method for repairing and fixing a guide light on a runway according to claim 12, wherein one or more of silica cement, fly ash cement, sulfate resistant cement, and jet cement is mixed. 14. The polymer-containing asphalt emulsion comprises an asphalt emulsion and a resin emulsion in a weight ratio of 95 to 7.
13. The method for repairing and fixing guide lights on a runway according to claim 12, which is a nonionic asphalt emulsion obtained by mixing at a ratio of 5: 5 to 25. 15. The tack coat layer is provided on the inner surface of the excavation part and / or the inner surface of the space for installing the lamp, and the tack coat layer is provided. 9, 1
0, 11, 12, 13 or 14, a repair and fixing method for a guide light on a runway.