KR20030052218A - The compounding process of concret restorer used on upper side of concret road &airport - Google Patents

Abstract

PURPOSE: An admixing binder (resin)-added molding material for recovering the damaged part of a concrete road and an airport road and its preparation method are provided, wherein the molding material is used to prepare cement rapidly on the spot only by adding water and has a favorable storing property for a long period. CONSTITUTION: The molding material for recovery is prepared by removing soil powder and impurities from ad admixing agent (silica and fine aggregate); completely drying the admixing agent; mixing the dried silica and fine aggregate with cement in the ratio of silica and fine aggregate 100/50 : cement 100/50 : the admixing binder (resin) 100/10-15 by weight at a temperature of 40-60 deg.C; and independently adding an isocyanate-based admixing binder (resin) to the mixture to prepare a molding material for preparing concrete rapidly.

Description

Concrete road and airport top section breakage recovery material Concrete impurity molding material manufacturing technology {The compounding process of concret restorer used on upper side of concret road ＆ airport}

-Concrete structures have various defects depending on their service life. In particular, cross-sectional damage of concrete roads and airports is a big issue, and there are various problems in repairing damages between traffic sections. It is an object of the present invention to recognize these difficulties and to manufacture a finished product that can be repaired in a short time so that it can be used in all construction sites.

The present invention will be described in detail as a technique for manufacturing a mixed binder (resin) -added molding material for improvising and restoring partial failure dropping such as concrete roads and airport runways, and the conventional polymer, resin (acrylic, urethane, epoxy) In the used concrete repair materials, due to the lack of manufacturing technology, most of the construction work is carried out through complex mixing process at the construction site.

In addition, when the finished product is manufactured by mixing the binder resin + the composite aggregate, there was a fear of premature condensation and deterioration of the material before construction due to chemical reactions or changes in climate, temperature, humidity, and the like. The manufacturing technology for producing the added finished product was developed.

-The ripple effect of the present invention is easy manufacturing method, long-term storage of materials is easy / resin-added finished product, no need for separate mortar composition, additional compounding process, and can be repaired simply by adding appropriate amount of water at the construction site. / It is possible to construct dry and wet places. / With the development of manufacturing technology, we can expect the effect of economic and technical construction such as shortening of air, process, and construction cost.

-Korean Patent Application No. 14547 (No. 106 of Construction New Technology Designation) is a polymer elastic concrete thin layer pavement method using epoxy resin, and the method of manufacturing polymer concrete mortar is polymer: filler: binder / 1: 0 ~ 1.5: 3 at construction site. Mixing mortar composition at the mixing ratio of ~ 7, the liquid polymer of the binder is mixed with the hardening material + filler, the filler is calcium carbonate / coarse stone powder, etc. It is a method of forming mortar at the construction site by the bib beam method by adding the curing initiator and accelerator to the polymer mixture after mixing in a forced mixer.

-Resin concrete pavement mortar manufacturing method of resin concrete pavement repair method using acrylic resin of construction patent application No. 37, which is patented in Korea, mixes gravel, silica sand, silica sand and additives at the construction site, and acrylic resin liquid in a separate mixer. It is a method of mixing mortar by mixing (topic + hardener) and then adding and mixing binder resin to the already-blended aggregate.If the color of expression or chemical resistance is required, dissolve the finish (hardener) and apply it to the surface.

-Therefore, the chemical concrete repair material using epoxy, acrylic, urethane, etc. of the conventional resin (resin) product absorbs moisture in the air when exposed to air or humidity due to the properties of the resin, and thus, the hydration effect thereof. As the produced calcium hydroxide combines with carbon dioxide gas in the air to cause a chemical reaction, early condensation occurs, and the alkali reaction of the mixed aggregate also acts in combination, which may cause flaw recurrence due to the decrease in strength. However, due to their physical properties, their resistance to chemicals is weakened, which may cause chemical reactions.

In the present invention, in order to improve the above disadvantages, a mixed binder (resin) additive manufacturing technology has been developed, which is expected to be large as expected in a manufacturing technology not found in the prior art.

-In order to solve the above problems, the present applicant develops a technique for manufacturing a mixed binder (resin) -added molding restoration material, thereby eliminating the complicated compounding process for the existing on-site mortar composition, thereby shortening the process and reducing the construction cost and material. It is a technical problem to be achieved by the present invention as one can expect technical and economic ripple effects due to long-term effects such as long-term storage and simplicity of logistics transportation and quality improvement due to technology development.

-The present invention is the development of manufacturing technology to achieve the above object, the composition of the invention is to manufacture the independent resin-added finished product by mixing technology of mixed binder (resin) / cement / silica sand and fine aggregate, the binder of the concrete impregnated molding material The resin has an isocyanate-based component, and the components and properties thereof are as described above.

The external appearance of the resin is brown liquid, viscosity (25 ° C) of 2500 to 3000 (cps), specific gravity 1.15, amine equivalent 225 to 245, foaming start time (20 ° C) 2 to 20 (minutes), and fire hazard. The species belongs to the fourth petroleum. In addition, the resin foam had an apparent density of 0.08 (g / cm 3), an independent bubble ratio of 81.9%, a compressive strength of 2.95 (kgf / cm 2), a bending strength of 6.53 (kgf / cm 2), a tensile strength of 7.12 (kgf / cm 2), and an absorption rate of 0.30. About%.

-This is a method to innovate the conventional technology, and manufactures a finished product that can be stored in a short time by adding water only in the field by easily adding water in the field by manufacturing finished resin-added products for the purpose of solid and stable technology construction and quality improvement. It is about.

-In the method of manufacturing and blending of the present invention, first, the blended silica sand and fine aggregates are completely dried using a high temperature dryer after removing soil and impurities using a screening yarn, and the internal temperature of the dried silica sand and fine aggregates is 40 to 60 ° C. When the mixture is blended at room temperature according to the standard mixing ratio, and after the addition of the mixing binder (resin) independently, the finished product can be used for a long time in a closed container, characterized by all changes.

-Therefore, the ripple effect of the composition and operation of the present invention is manufactured by producing a resin-added finished product as described in the above items, despite the construction site and conditions, the finished molding product is prepared by pouring only the required amount of water at the construction site As well as the effect of reducing construction cost (material cost, labor cost) due to quick construction in a short time by forming mortar and restoring and repairing, and saving logistics cost due to single container storage and loading transportation of products easily manufactured in 1 CAN Economic ripple effects such as time efficiency can be achieved.

The production method of the present invention is as follows.

-Standard compounding ratio is prepared by adjusting the mixing ratio according to the requirements such as% silica sand and fine aggregate 100/50: cement 100/50: cement 100/50: mixed binder (resin) 100/10 ~ 15 .

Hereinafter, the present invention will be described in detail with reference to the following examples.

Example

After removing the soil powder and impurities using the screening machine, the first process, the compounding silica sand and fine aggregate, and then

When the second process, silica sand and fine aggregate is completely dried using a high temperature dryer, and the internal temperature of the dried silica sand and fine aggregate is 40 to 60 ° C.,

In step 3, at room temperature, the compound cement is mixed and blended according to the standard compounding ratio, and then

4th process, after adding the mixing binder (resin) independently, after manufacturing the concrete casting molding material,

5th process, keep it in an airtight container.

Test: Example 1

Requester: Hanil Sealant Co., Ltd.

Test Sample Name: Concrete Casting Molding Material

Test and inspection method: soil pollution process test method

Examination Results

-The test results of the soil pollution process test method considering the environmental aspects of the concrete storm molding material, and according to the relevant provisions of Article 14 of the soil pollution environmental preservation law, it is considered that the concrete storm molding material has little effect on soil pollution.

Test: Example 2

Requester: Hanil Sealant Co., Ltd.

Test organization: R & D center

Test sample name: Concrete casting molding material

Test Method: KSF 2477. 4716. 2436. 2475. 4916

-Test results-

Test: Example 3

Requester: Hanil Sealant Co., Ltd.

Test organization: Korea Building Materials Testing Institute

Test sample name: Concrete casting molding material

Test Method: KSF 2424. 4916. 2405. 2456

Test Results

-It is the result of the rough test of concrete impregnated molding material, and it is considered to be suitable for the damage repair work of concrete road and airport runway. And the long-term storage test of the concrete casting molding product is described in Test: Example 4.

Test: Example 4

Requester: Hanil Sealant Co., Ltd.

Test Agency: Hanil Integrated Sealant Co., Ltd.

Test sample name: Concrete casting molding material

Test details: Storage strength test of the finished product

Test Method: KS L 5105-97, KSF 4916

Test Results

-The storage test results of the finished product shows that there is no difference in standard strength even if the container is stored for 3 months / 6 months after manufacture. This is due to chemical reactions, climate, and temperature change. There is no concern, and it is recognized that there is an effect of storage of manufacturing production.

-As described in the above experimental results, the invention of the resin additive manufacturing technology can significantly reduce construction problems and expect great significance and effect of quality improvement and construction improvement.

As described above, the present invention produces high-quality, low-cost materials that are easy to store for a long time due to the development of finished product manufacturing technology. There is an economic ripple effect on technology construction and quality improvement.

Claims (1)

-In the manufacturing technology of concrete impregnated molding materials (finished products) with mixed binders (resins) for molding and restoring partial damages such as concrete roads and airport runways, using a screening machine to mix soil and impurities Remove the mixture, completely dry it using a high temperature dryer, and mix the cement mixture at room temperature when the internal temperature of the dried silica sand and fine aggregate is 40-60 ° C. (% silica sand and fine aggregate 100/50 to weight: cement 100/50: A technique for producing concrete impregnated molding materials by mixing and blending according to the mixed binder (resin) 100/10 to 15) and then adding isocyanate-based mixed binder (resin) independently. In addition, due to the characteristics of concrete, up to 30% of the back cement can be added within the standard mixing range of 100/50 weight of the compounding material (cement).