KR20220096361A - Asphalt composition for filling hollow portion - Google Patents

Abstract

According to the present invention, an asphalt composition for filling a hollow portion of a breakwater comprises 16-20% by weight of an asphalt binder, 9 to 11% by weight of aggregate of 13 mm or less, 45 to 55% by weight of fine aggregate, and 18 to 25% by weight of a filling material. The asphalt binder has a penetration grade of 60 to 80. The filling material has a size of less than 0.075 mm and includes at least one of limestone powder, slaked lime, and recovered dust.

Description

Asphalt composition for filling the breakwater hollow part {ASPHALT COMPOSITION FOR FILLING HOLLOW PORTION}

The present invention relates to the field of construction, and more particularly, to an asphalt composition for filling a hollow part of a breakwater.

For repair and reinforcement of port facilities such as breakwaters, a method that minimizes pollution of seawater should be applied. A concrete composition may be used for repair and reinforcement of the surface or load-bearing capacity of an above-ground structure, but it is difficult to use the concrete composition for a structure immersed in seawater. This is because seawater contamination by cement occurs.

Among them, the breakwater is a structure installed to protect the inner harbor from typhoons and wave heights and to move vehicles and people. However, there is a problem that a hollow part occurs inside the breakwater as it is exposed to seawater for a long time, and cracks and peeling and peeling occur on the upper surface of the breakwater due to the expansion of the hollow part. In particular, the problem of structural safety deterioration due to the occurrence of cavities inside the breakwater due to the influence of the high wave height has been continuously reported.

In the past, the hollow part generated inside the breakwater was filled using a concrete composition using ash or an eco-friendly binder without using cement, but there was a problem that the composition could not be properly filled due to the effect of seawater and continuous waves.

The present invention is derived to solve the above problems, and proposes an asphalt composition for filling the hollow part of a breakwater that can easily fill the hollow part inside the coastal breakwater.

In order to solve the above problems, the asphalt composition for filling the breakwater hollow part according to the present invention comprises 16 to 20 wt% of an asphalt binder; 9-11 wt% aggregate of 13 mm or less; 45-55% by weight of fine aggregate; 18 to 25% by weight of a filler; including, wherein the asphalt binder has a penetration rating of 60 to 80, the filler has a size of less than 0.075 mm, and at least one of limestone powder, slaked lime, and recovered dust.

It is preferable that the volume ratio of the filler / the asphalt binder is 0.5 or less.

It is preferable that the pouring temperature is 150-160°C and the viscosity is 180-200 Pa·s.

The filler preferably has an apparent specific gravity of 2.71 to 2.75.

Frame 100 formed in a grid structure; Composition receiving unit 200 installed in the frame 100; a transfer pipe 400 coupled to the composition receiving unit 200; a motor unit 300 coupled to the transfer pipe 400; a spray pipe 500 coupled to an end of the conveying pipe 400; a jetting unit 600 coupled to an end of the jetting pipe 500; It is preferable to pour by a composition spraying device comprising a; heating the transfer pipe 400, the ejection part 600, and a control device 700 installed in the frame to control the motor part 300. .

The frame 100 is further provided with a washing solution accommodating part 800 for accommodating the washing solution B for cleaning the transfer pipe 400 and the spray pipe 500, and the washing solution accommodating part 800 and the The transfer pipe 400 is interconnected by a connecting pipe 900 , and it is preferable that a cleaning solution opening and closing device 910 is installed in the connecting pipe 900 .

In the washing liquid receiving part 800, a spout coupling pipe 1000 coupled to the spout 600 is further installed, and the washing solution B is introduced into the spout 600 to the transfer pipe 400. And it is preferable to clean the injection pipe (500).

It is preferable that the conveying pipe 400 and the ejection part 600 be heated so that the temperature of the asphalt composition (A) is maintained.

It is preferable that the motor unit 300 can be driven in both directions.

The motor unit 300 is preferably driven by being coupled to the transfer pipe 400 and the ejection unit coupling pipe 1000 in common.

It is preferable that the injection pipe accommodating part 510 is rotationally driven in the vertical direction to wind and unwind the injection pipe 500 .

It is preferable that a heating control panel for heating the transfer pipe 400 and the ejection part 600 is installed in the control device 700 .

The asphalt composition for filling the hollow part of the breakwater according to the present invention has the advantage that the fluidity of the asphalt is maintained even when exposed to seawater after ejection, and the viscosity is excellent so that it is not separated by seawater.

1 is a view of a compressive strength test of an asphalt composition according to an embodiment of the present invention;
2 is a view of the flexural strength test of the asphalt composition according to an embodiment of the present invention;
3 is a view of the flexural strength test according to an embodiment of the present invention;
4 is a view of the bending strength test according to an embodiment of the present invention;
5 is a perspective view of an asphalt composition injector for filling a hollow part of a breakwater according to an embodiment of the present invention.
6 is a plan view of an asphalt composition injector for filling a hollow part of a breakwater according to an embodiment of the present invention;
7 is a rear perspective view of the asphalt composition injector for filling the breakwater hollow part according to an embodiment of the present invention;
8 is a perspective view illustrating an installation structure of a transfer pipe, a jet unit coupling pipe, and a connection pipe according to an embodiment of the present invention;
9 is a plan view showing a coupling structure of a composition receiving unit, a conveying pipe, and a spraying pipe according to an embodiment of the present invention;
10 is a side view showing the installation structure of the cleaning liquid receiving part and the jetting part coupling pipe according to an embodiment of the present invention;
11 is a view showing that the injection pipe according to an embodiment of the present invention is wound on the injection pipe receiving part;

An embodiment of the asphalt composition for filling the breakwater hollow part according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numbers, and A duplicate description will be omitted.

In addition, terms such as first, second, etc. used below are merely identification symbols for distinguishing the same or corresponding components, and the same or corresponding components are limited by terms such as first and second not.

In addition, the term "coupling" does not mean only when there is direct physical contact between each component in the contact relationship between each component, but another component is interposed between each component, so that the component is in the other component. It should be used as a concept that encompasses even the cases in which each is in contact.

Hereinafter, the asphalt composition for filling the hollow part of the breakwater according to an embodiment of the present invention will be described in detail with reference to the accompanying tables and drawings.

The asphalt composition for filling the breakwater hollow part according to the present invention comprises 16 to 20% by weight of an asphalt binder; 9-11 wt% aggregate of 13 mm or less; 45-55% by weight of fine aggregate; 18 to 25% by weight of the filler; however, the asphalt binder has a penetration rating of 60 to 80, the filler has a size of less than 0.075 mm, and at least any one or more of limestone powder, slaked lime, and recovered dust is included. At this time, it is preferable that the volume ratio of the filler/asphalt binder is 0.5 or less.

The asphalt composition for filling the breakwater hollow part according to the present invention preferably has a pouring temperature of 150 to 160° C. and a viscosity of 180 to 200 Pa·s.

It is preferable that the filler to be mixed in the present invention has an apparent specific gravity of 2.71 to 2.75.

The use of aggregates of 13 mm or less in the present invention is to improve the compressive strength and flexural strength while maintaining the viscosity of the composition.

The density is calculated using the formula below.

here

η = Viscosity (Pa.s)

ρ = apparent density (kg/m ³ )

g = acceleration due to gravity (m/s ² )

t = exit time (sec.).

Limiting the viscosity and apparent specific gravity in the present invention is the result of implementing the optimal formulation for evenly filling the hollow without being lost even when poured in seawater.

In particular, when the volume ratio of (filler/asphalt binder) is 0.5 or more, the viscosity increases. The present invention calculates the mixing ratio of 9-11 wt% of aggregate 13 mm or less, 45-55 wt% of fine aggregate, and 18-25 wt% of filler in order to limit the viscosity to 180-200 Pa·s, and limits the apparent specific gravity of the filler did

Table 1 below shows the composition of the compounding ratio of Examples.

asphalt fill material fine aggregate Aggregate less than 13mm Example 1 16 18 56 10 Example 2 16 22 52 10 Example 3 16 25 49 10 Example 4 20 18 52 10 Example 5 20 22 48 10 Example 6 20 25 45 10

Viscosity tests for Examples 1 to 6 are shown in FIGS. 3 and 4 . It can be confirmed that Examples 4,5,6 having a high asphalt content have lower viscosity than Examples 1,2,3.

In addition, as shown in FIGS. 1 and 2, the asphalt composition for filling the breakwater hollow part was prepared at the mixing ratio of Examples 1 to 6, and the compressive strength and flexural strength tests were performed to compare the standard properties.

Table 2 below summarizes the compressive strength and flexural strength test results for Examples 1 to 6.

The port and fishing port design standards stipulate that the basic properties of the asphalt mixture should be at least 1.95 in specific gravity, 1N/mm2 compressive strength, 1N/mm2 flexural strength, and 5mm or more of bending deformation.

division importance compressive strength
(N/㎟) flexural strength
(N/㎟) Deflection amount
(mm) Example 1 2.152 3.0 3.7 11.6 Example 2 2.177 3.5 3.1 12.5 Example 3 2.154 2.6 3.3 15.1 Example 4 2.152 3.3 3.8 9.9 Example 5 2.031 1.9 1.9 11.6 Example 6 2.119 2.5 2.2 14.8

As a result of the test, it was confirmed that all of Examples 1 to 6 satisfies the sand asphalt design criteria of the port and fish port design criteria.

The asphalt composition for filling the breakwater hollow part according to the present invention comprises: a frame 100 formed in a lattice structure; The composition receiving unit 200 installed in the frame 100; a transfer pipe 400 coupled to the composition receiving unit 200; The motor unit 300 coupled to the transfer pipe 400; The injection pipe 500 coupled to the end of the transfer pipe 400; Jet unit 600 coupled to the end of the injection pipe 500; It is preferable to be poured by a composition spraying device comprising a; to heat the transfer pipe 400, the ejection unit 600, and a control device 700 installed in the frame to control the motor unit 300.

The composition injection device is formed in the same configuration as in FIG. 5 . In the case of the motor unit 300 , it is connected to the transfer pipe 400 to move the asphalt composition (A) for filling the breakwater hollow part filled in the composition receiving part 200 .

At this time, a manual opening/closing device 410 that is manually opened and closed may be installed in the transfer pipe at a position as shown in FIG. 6 .

The frame 100 is further provided with a washing solution receiving unit 800 in which the washing solution B for cleaning the conveying pipe 400 and the spraying pipe 500 is accommodated, and the washing solution receiving unit 800 and the conveying pipe 400 are installed. are interconnected by a connection pipe 900 , and it is preferable that a cleaning solution opening/closing device 910 is installed in the connection pipe 900 .

Since the asphalt composition for filling the breakwater hollow part is an asphalt composition with low viscosity, it must be washed quickly after using the equipment to minimize damage to the equipment due to the binder.

At this time, the washing liquid receiving unit 800 is further installed with a jet coupling pipe 1000 coupled to the jet unit 600 , and the washing solution B is introduced into the jet unit 600 to transfer the pipe 400 and the jet pipe. It is desirable to clean 500.

As shown in FIG. 6 , in the washing liquid receiving unit 800 , the jet unit coupling pipe 1000 and the conveying pipe 400 coupled to the jet unit 600 to wash the conveying pipe 400 and the jet pipe 500 are connected to each other. A pipe 900 is formed.

At this time, the washing liquid B is transferred into the tube by driving the motor 300 .

The transfer pipe 400 and the ejection part 600 are preferably heated so that the temperature of the asphalt composition (A) is maintained.

The conveying pipe 400 and the ejection part 600 are made of a material having good thermal conductivity, and the heat wire is coupled to generate heat. In particular, since the jetting part 600 may spray the asphalt composition (A) in a state submerged in sea level, it is preferable to manufacture and operate the pipe with a length of at least 30 cm.

The injection pipe 500 is a flexible material, and is preferably wound around the injection pipe receiving part 510 in the vertical direction as an axis.

The injection pipe 500 may be wound and unwound in the structure shown in FIGS. 1 and 2 by the injection pipe receiving part 510 . At this time, the injection pipe accommodating part 510 can be rotated manually or automatically, and the injection pipe 500 is wound and unwound by the rotational driving of the injection pipe accommodating part 510 .

The transfer pipe 400 has a detachable structure, and is preferably washed after separation. The transport pipe 400 connected to the device is a detachable structure, and may be separated and recombined for detailed cleaning.

In addition, in case of clogging during construction, it can be replaced immediately on site.

It is preferable that the motor unit 300 can be driven in both directions. This is to maximize the cleaning effect by moving the cleaning liquid (B) in both directions when washing the pipe using the cleaning liquid (B).

It is preferable that the motor unit 300 is coupled and driven in common to the transfer pipe 400 and the ejection unit coupling pipe 1000 .

It is preferable that the injection pipe accommodating part 510 is rotated in the vertical direction as an axis to wind and unwind the injection pipe 500 .

It is preferable that the control device 700 is provided with a heating control panel for heating the transfer pipe 400 and the ejection unit 600 .

A: Asphalt composition B: Washing liquid
h: perforated hole 10: breakwater
11: hollow part 100: frame
200: composition receiving unit 300: motor unit
400: transfer pipe 500: spray pipe
510: injection pipe receiving part 600: ejection part
700: control device 800: washing liquid
900: connection pipe 910: cleaning liquid switchgear
1000: ejection part coupling pipe

Claims (12)

Asphalt binder 16-20 wt%;
9-11 wt% aggregate of 13 mm or less;
45-55% by weight of fine aggregate;
18 to 25% by weight of the filling material; including,
The asphalt binder has a penetration rating of 60 to 80,
The filler has a size of less than 0.075 mm, and the asphalt composition for filling the breakwater hollow part, characterized in that it contains at least any one of limestone powder, slaked lime, and recovered dust.
According to claim 1,
The asphalt composition for filling the hollow part of the breakwater, characterized in that the volume ratio of the filler / the asphalt binder is 0.5 or less.
3. The method of claim 2,
The asphalt composition for filling the hollow part of the breakwater, characterized in that the pouring temperature is 150 ~ 160 ℃, the viscosity is 180 ~ 200 Pa · s.
4. The method of claim 3,
The filler is an asphalt composition for filling the breakwater hollow part, characterized in that the apparent specific gravity is 2.71 to 2.75.
According to claim 1,
Frame 100 formed in a grid structure;
Composition receiving unit 200 installed in the frame 100;
a transfer pipe 400 coupled to the composition receiving unit 200;
a motor unit 300 coupled to the transfer pipe 400;
a spray pipe 500 coupled to an end of the conveying pipe 400;
a jetting unit 600 coupled to an end of the jetting pipe 500;
It is characterized in that it is poured by a composition spraying device comprising a; heating the transfer pipe 400, the ejection part 600, and a control device 700 installed in the frame to control the motor part 300 Asphalt composition for filling hollow part of breakwater.
According to claim 5,
The frame 100 is further provided with a washing solution receiving unit 800 in which the washing solution (B) for cleaning the transfer pipe 400 and the spray pipe 500 is accommodated,
The washing solution receiving part 800 and the conveying pipe 400 are interconnected by a connecting pipe 900, and the washing solution opening and closing device 910 is installed in the connecting pipe 900 for filling the hollow part of the breakwater. Asphalt composition.
7. The method of claim 6,
A jet unit coupling pipe 1000 coupled to the jet unit 600 is further installed in the washing solution receiving unit 800 ,
The asphalt composition for filling the hollow part of a breakwater, characterized in that the cleaning solution (B) is injected into the jetting part (600) to clean the conveying pipe (400) and the jetting pipe (500).
8. The method of claim 7,
The asphalt composition for filling the hollow part of the breakwater, characterized in that the transfer pipe 400 and the ejection part 600 are heated to maintain the temperature of the asphalt composition (A).
9. The method of claim 8,
The motor unit 300 is an asphalt composition for filling a hollow part of a breakwater, characterized in that it can be driven in both directions.
10. The method of claim 9,
The motor unit 300 is an asphalt composition for filling a hollow part of a breakwater, characterized in that it is coupled to the transport pipe 400 and the ejection part coupling pipe 1000 and is driven.
11. The method of claim 10,
The injection pipe accommodating part 510 is rotationally driven in the vertical direction as an axis to wind and unwind the injection pipe 500. Asphalt composition for filling the hollow part of the breakwater.
12. The method of claim 11,
Asphalt composition for filling the hollow part of the breakwater, characterized in that the control device (700) is provided with a heating control panel for heating the transfer pipe (400) and the ejection part (600).

Images