JP2005239490A - Hydraulic composition for substrate adjuster and substrate adjuster - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydraulic composition containing alumina cement and used as a substrate adjuster having water-proofing property by being mixed with rubber asphalt emulsion, small in the change of hardening time and flowability even in a long term storage and exhibiting rapid hydration hardening rate, excellent workability and excellent applicability, and the substrate adjuster having water-proofing property prepared by mixing the hydraulic composition with the rubber asphalt emulsion. <P>SOLUTION: The hydraulic composition is used for the substrate adjuster having water-proofing material by being mixed with the rubber asphalt emulsion. The hydraulic composition contains a hydraulic component containing the alumina cement and hydrogen polysiloxane silicone oil in the quantity of 0.01-4 pts. mass hydrogen polysiloxane silicone oil per 100 pts. mass alumina cement. The substrate adjuster uses the hydraulic composition. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hydraulic composition that is excellent in storage stability, can be applied thinly and thickly, has fast curability, and is mixed with a rubber asphalt emulsion to be used as a base preparation having waterproofness. Furthermore, the present invention relates to a base conditioner that can be applied to a waterproof layer construction base such as a rooftop of a general building or a roof balcony, which has a temporary waterproof property obtained by mixing this hydraulic composition and a rubber asphalt emulsion.

A layer containing an alumina cement and a rubber asphalt emulsion is used as a waterproof layer. For example, Patent Document 1 discloses blistering in which an aqueous rubber-rubber asphalt emulsion and a hydraulic cement powder are blended between a base and a waterproof layer. A waterproof construction method characterized by providing an undercoat layer for prevention is disclosed.
Patent Document 2 discloses a base material for waterproof layer construction, which is 100 parts by mass of a hydraulic component including 100 parts by mass of alumina cement, 20 to 150 parts by mass of gypsum, and 50 to 600 parts by mass of blast furnace slag. In addition, a base preparation material comprising 0.1 to 50 parts by weight of asphalt, a water reducing agent and a thickener and having a curing and drying time of 0.5 to 10 hours is disclosed.

Japanese Unexamined Patent Publication No. 63-128092 JP 2001-139845 A

Renovation of waterproof layer on rooftops of general buildings and roof balconies, etc. (1) After removing the entire surface of the old waterproof layer, using a waterproof base adjustment material, and performing a base adjustment process, a new waterproof Renovate the entire surface to install the layer, or (2) Remove the rising part of the old waterproofing layer, bulge, peeling, cracking, and other defective parts, and perform the base preparation using a waterproof base preparation After that, partial renovation to construct a new waterproof layer has been carried out.
In partial refurbishment, a large level difference occurs at the part where the waterproof layer is partially removed or at the start-up, especially when the old waterproof layer is a thermal asphalt laminated waterproofing method, the level difference may reach 10 to 20 mm. Temporary waterproofing is required until a new waterproofing layer is constructed since the waterproofing property is temporarily impaired at the part where the layer is removed or at the time of rising.

  When constructing a waterproof layer such as an asphalt waterproof layer as a new waterproof layer, a hydraulic composition containing alumina cement with a fast hydration hardening rate and a rubber asphalt emulsion are mixed. A base material that has been adjusted is used. If a hydraulic composition containing alumina cement that has been stored for a long time is used as the hydraulic composition of the base material, there may be a problem in workability and workability because the curing time and fluidity change. Therefore, a hydraulic composition that is excellent in long-term storage stability is required as the hydraulic composition used for the base material.

  The present invention can be used as a base material having a waterproof property by mixing with a rubber asphalt emulsion when a waterproof layer such as an asphalt waterproof layer such as a modified asphalt roofing for torch construction is applied as a new waterproof layer. In addition, a hydraulic composition containing alumina cement having a small change in curing time and fluidity even after long-term storage, a fast hydration curing rate, and excellent workability and workability, and the hydraulic composition and rubber An object of the present invention is to provide a base material having waterproofness mixed with an asphalt emulsion.

The hydraulic composition of the present invention is a hydraulic composition used for a base preparation having a waterproof property mixed with a rubber asphalt emulsion,
The hydraulic composition includes a hydraulic component including alumina cement and a hydrogen polysiloxane silicone oil,
A hydraulic composition comprising 0.01 to 4 parts by mass of hydrogen polysiloxane silicone oil with respect to 100 parts by mass of alumina cement.

The base material of the present invention is a base material having a waterproof property obtained by mixing a hydraulic composition and a rubber asphalt emulsion,
The hydraulic composition is the hydraulic composition of the present invention described above,
It is a foundation | substrate adjustment material characterized by including 25-50 mass parts of solid content of a rubber asphalt emulsion with respect to 100 mass parts of hydraulic components contained in a hydraulic composition.

The preferable aspect of the hydraulic composition used for the foundation | substrate adjustment material which mixes with the rubber asphalt emulsion of this invention and has waterproofness is shown.
In the hydraulic composition of the present invention, the hydraulic component preferably further contains Portland cement and gypsum, and contains 20 to 200 parts by mass of Portland cement and 10 to 80 parts by mass of gypsum with respect to 100 parts by mass of alumina cement. Is preferred.
It is preferable that the hydraulic composition of the present invention further includes a fluidizing agent, a setting speed adjusting agent, and an antifoaming agent.
The hydraulic composition of the present invention preferably further contains an aggregate.

The preferable aspect of the base | substrate adjustment material of this invention is shown.
The rubber asphalt emulsion is preferably an SBS modified asphalt emulsion.

  Since the hydraulic composition of the present invention has long-term storage stability, it is mixed with a rubber asphalt emulsion, the curing time and fluidity are stable, it has sufficient temporary waterproofing properties, and the hydration curing rate is fast. In addition, it is possible to obtain a base material having stable workability and workability.

  In the hydraulic composition of the present invention, the hydraulic component containing alumina cement as an essential component and 0.01 to 4 parts by mass of hydrogen polysiloxane silicone oil with respect to 100 parts by mass of alumina cement can be used to form a bag or rose. The body can be stored for a long time.

One of the important requirements to be provided as a hydraulic component used in a hydraulic composition for a base preparation used as a base preparation having a waterproof property by mixing with a rubber asphalt emulsion is to have an appropriate rapid hardness. However, rapid hardening primarily depends on the type of hydraulic component included. The Portland cement system has the disadvantages that the curing speed is slow and the drying shrinkage is large, while the fast-curing cement system has an improvement in terms of the curing speed, but has the disadvantage that the fluidity is low and the strength is low. Have.
The hydraulic component contains alumina cement as an essential component, and can be used by mixing at least one component selected from Portland cement, gypsum and blast furnace slag as necessary.

The hydraulic component preferably contains Portland cement and gypsum in addition to alumina cement, and preferably 20 to 200 parts by weight, more preferably 40 to 150 parts by weight of Portland cement with respect to 100 parts by weight of alumina cement. Preferably 60 to 120 parts by weight, particularly preferably 70 to 100 parts by weight, and gypsum 10 to 80 parts by weight, more preferably 12 to 60 parts by weight, more preferably 14 to 50 parts by weight, particularly preferably 16 to 40 parts by weight. It is preferable to include a part because it has moderate rapid hardening, high fluidity and strength, and good dimensional stability.
The hydraulic component can further include blast furnace slag.

Alumina cement has a potentially rapid hardening property, and gives a cured product with excellent chemical resistance and fire resistance after curing. Several types of alumina cements having different mineral compositions are known and commercially available, and all of them are monocalcium aluminate (CA). However, in terms of strength and colorability, there are many CA components and C _4. Alumina cement with a small amount of small components such as AF is preferred. Further, the presence of blast furnace slag having latent hydraulic properties is preferably added because it has an effect of suppressing the temporal deterioration of the cured body strength, which is a drawback thereof.

  For Portland cement, ordinary Portland cement, early-strength Portland cement, super-early-strength Portland cement, medium heat Portland cement, low heat Portland cement, sulfate-resistant Portland cement, white Portland cement, blast furnace cement, fly ash cement, silica Various mixed cements such as cement can be used singly or in combination of two or more.

  About gypsum, each gypsum, such as anhydrous and semi-water, can be used as 1 type, or 2 or more types of mixtures irrespective of the kind. Gypsum is rapidly hardened and acts as a component for maintaining dimensional stability after curing.

The blast furnace slag not only increases the crack resistance of the hardened body due to drying shrinkage, but also has the effect of improving the strength of the hardened body of alumina cement.
As the blast furnace slag, a brane specific surface area of 3000 cm ² / g or more as defined in JIS A-6206 can be used.
In the hydraulic component, the amount of blast furnace slag added is preferably 50 to 250 parts by mass with respect to 100 parts by mass of the alumina cement. If the amount is too small, the shrinkage increases.

The hydraulic composition of the present invention is 0.01 to 0.4 parts by mass, preferably 0.02 to 0.3 parts by mass of hydrogen polysiloxane silicone oil with respect to 100 parts by mass of alumina cement contained in the hydraulic component. Parts, more preferably 0.03 to 0.2 parts by weight, particularly preferably 0.04 to 0.15 parts by weight.
If the amount of hydrogenpolysiloxane silicone oil added is less than the above range with respect to alumina cement, the storage stability of the alumina cement-based hydraulic composition cannot be sufficiently obtained, while if too much, The strength may be reduced, and it is not preferable because it is uneconomical.

As the hydrogen polysiloxane silicone oil, a known silicone oil having a Si—H bond can be used, which can be dispersed and mixed with powder such as alumina cement, and can coat the surface of alumina cement particles. Things can be used.
The hydrogen polysiloxane silicone oil is preferably an alkyl hydrogen polysiloxane silicone oil such as methyl hydrogen poly (dimethylsiloxane) silicone oil (trade name: KF-99, manufactured by Shin-Etsu Chemical Co., Ltd.). The hydrogen polysiloxane silicone oil is preferably hydrogen poly (dimethylsiloxane) silicone oil.

  In addition to the hydraulic component and hydrogen polysiloxane silicone oil, the hydraulic composition of the present invention is a polymer emulsion excluding rubber asphalt emulsion, aggregate, and weight increase within a range that does not impair the characteristics of the present invention depending on the purpose. A material, a water reducing agent, a curing rate adjusting agent, a thickener, an antifoaming agent, and the like can be appropriately selected and added.

By adding a water reducing agent to the hydraulic composition of the present invention, it is possible to suppress material separation of a paste-like or slurry-like base material obtained by mixing with a rubber asphalt emulsion, and a high-strength cured body It is necessary to lower the water / hydraulic component ratio in order to obtain a high fluidity even when the water / hydraulic component ratio is lowered.
By adding a thickener to the hydraulic composition of the present invention, a sufficient level of material separation can be achieved while ensuring high fluidity of the paste-like or slurry-like base material prepared by mixing with the rubber asphalt emulsion. Can be suppressed.
By adding an antifoaming agent to the hydraulic composition of the present invention, it is possible to prevent pinholes due to air bubbles in the construction of the base preparation obtained by mixing with the rubber asphalt emulsion, and to maintain temporary waterproofness. preferable.
By adding a defoamer and a thickener in combination with the hydraulic composition of the present invention, the base material obtained by mixing with the rubber asphalt emulsion and its construction, suppression of aggregate separation, suppression of bubble generation In order to give a favorable effect to the improvement of the surface of the cured body, it is preferable.
By adding a water reducing agent and a coagulation speed adjusting agent in combination with the hydraulic composition of the present invention, the coagulation speed can be adjusted to a base preparation obtained by mixing with a rubber asphalt emulsion and its construction, and a relatively long It is preferable in order to achieve both a working time and a relatively short curing time.

  As aggregate, quartz sand, river sand, sea sand, blast furnace slag, and various crushed stones can be used. The diameter of the aggregate is preferably 0.5 mm or less. Moreover, the addition amount of the aggregate is preferably 200 parts by mass or less, more preferably 150 parts by mass or less, and particularly preferably 100 parts by mass or less with respect to 100 parts by mass of the hydraulic component. When the aggregate is larger than the above range with respect to the hydraulic component, not only material separation and fluidity decrease are caused, but also the temporary waterproof property may be greatly deteriorated.

As the extender, known extenders such as fly ash, limestone powder, and siliceous powder can be added.
Although the effect of improving the fluidity can be obtained by the addition of the extender, the addition of an excessive amount causes a decrease in strength development, so that the addition amount is 150 parts by mass or less with respect to 100 parts by mass of the hydraulic component. It is preferable to do this. The size of the filler is preferably 0.5 mm or less from the viewpoint of the effect.

As the water reducing agent, commercially available products such as naphthalene-based, polycarboxylic acid, polyether-based, and melamine-based agents can be used regardless of their types.
The amount of the water reducing agent added is preferably 0.05 to 3 parts by mass, more preferably 0.15 to 2 parts by mass, and particularly preferably 0.2 to 1 part by mass with respect to 100 parts by mass of the hydraulic component. If the amount added is less than the above range, the sufficient effect may not be exhibited. If the amount added is more than the above range, the effect corresponding to the amount added cannot be obtained, and it is uneconomical. In some cases, this is undesirable.

As the setting rate adjusting agent, a setting accelerator that is a component that accelerates the setting, a setting retarder that is a component that delays the setting, and the like can be used.
As the setting speed adjusting agent, it is preferable to use a setting accelerator and a setting retarder in combination. The setting speed adjusting agent can be used for, for example, 30 minutes or more by adding the setting accelerator and the setting retarder in combination. Flow retention that enables time and rapid hardening thereafter ensure fast curing and quick drying that allow light walks on the same day and finishing material construction within 3 days, as well as slurry movement and surface drying. The risk of occurrence of wrinkles and bubble omission due to surface cracking, surface pulverization due to poor surface hardening at low temperatures, and the occurrence of cracks during condensation at high temperatures is reduced, and a cured body having good surface properties can be obtained. Furthermore, it is possible to achieve both the above-mentioned super-fast hardness, fluidity retention and excellent cured product properties in a wide range from low temperature to high temperature.

Depending on the hydraulic component and hydraulic composition to be used, the setting rate adjusting agent can be added as appropriate within the range that does not impair the properties, and the components, addition amount and mixing ratio of the setting accelerator and setting retarder are appropriately selected. Then, fluidity and pot life can be adjusted.
When the setting speed adjusting agent is used for adjusting fluidity and pot life, the total amount of lithium salt and sodium salt is 0.05 to 5 parts by mass, and further 0.1 to 0.1 parts by mass with respect to 100 parts by mass of the hydraulic component. It is preferable to add in the range of 2 parts by mass, particularly 0.30 to 0.70 parts by mass.

A known setting accelerator can be used as the setting accelerator. Examples of setting accelerators include inorganic lithium salts and organic lithium salts such as lithium carbonate, lithium chloride, lithium sulfate, lithium nitrate, lithium hydroxide, lithium acetate, lithium tartrate, lithium phosphate, and lithium citrate. Lithium salt such as can be used. In particular, lithium carbonate is preferable from the viewpoints of effects, availability, and cost.
As the setting accelerator, it is preferable to use a particle size that does not interfere with the properties, and the particle size is preferably 50 μm or less.
Particularly when a lithium salt is used, the particle diameter of the lithium salt is preferably 50 μm or less, more preferably 30 μm or less, and particularly preferably 10 μm or less. If the particle diameter is larger than the above range, the solubility of the lithium salt decreases, which is not preferable. Then, it may be conspicuous as a large number of fine spots, and the appearance may be impaired.

  As the setting retarder, a known setting retarder can be used. As an example of a set retarder, sodium salts such as inorganic sodium salts and organic sodium salts such as sodium sulfate, sodium bicarbonate, sodium tartrate, sodium malate, sodium citrate, and sodium gluconate can be used. . In particular, sodium bicarbonate and sodium tartrate are preferable from the viewpoints of effect, availability, and price. It should be noted that if the amount added is large, fluidity may be deteriorated, poor curing may occur, or surface defects may occur due to the generation of breathing water.

As the antifoaming agent, known materials such as synthetic materials such as silicon-based, alcohol-based, polyether-based, and fluorine-based materials or plant-derived natural materials can be used.
The addition amount of the antifoaming agent can be added within a range that does not impair the characteristics of the present invention. The antifoaming agent is 0.02 to 3 parts by mass, and further 0.04 to 100 parts by mass with respect to 100 parts by mass of the hydraulic component. The amount of 2 parts by mass, particularly 0.06 to 1 part by mass is preferable for preventing pinholes caused by bubbles in the obtained paste or slurry, and maintaining temporary waterproofness.

As the thickener, a cellulose type such as methyl cellulose and carboxymethyl cellulose, a protein type such as gelatin and bectin, a water-soluble polymer type such as polyethylene glycol, polyethylene oxide, polyacrylamide, and polyvinyl alcohol, and a latex type can be used. Cellulose and the like can be used.
The addition amount of the thickener can be added within a range that does not impair the characteristics of the present invention, and is 0.01 to 0.5 parts by mass, more preferably 0.01 to 0.3 parts with respect to 100 parts by mass of the hydraulic component. It is preferable to contain a mass part, especially 0.01-0.2 mass part. If the amount of the thickener added is increased, the fluidity may be lowered, which is not preferable.

  The rubber asphalt emulsion is added to the base preparation material in order to improve adhesion to the base, crack resistance, and wear resistance of the surface of the cured body. In addition, when the new waterproof layer is an asphalt waterproof layer, the base preparation material containing rubber asphalt emulsion can obtain high adhesive strength with the new asphalt waterproof layer without using a primer. Even though it does not explode, it contributes to higher adhesion through a state close to melting.

In the base preparation of the present invention, the rubber asphalt emulsion is added in an amount of 25 to 50 parts by mass, preferably 30 to 45 parts by mass, based on 100 parts by mass of the hydraulic component contained in the hydraulic composition. Parts, particularly preferably 35 to 40 parts by weight.
If the solid content of the rubber asphalt emulsion is larger than the above range, not only will the fluidity and curing rate be significantly reduced, but it will also deteriorate the surface condition of the cured product by including air bubbles and a small amount of foaming, and the adhesive strength. In addition, the temporary waterproof property may be deteriorated. Moreover, when less than the said range, temporary waterproofness will be reduced.

  The rubber asphalt emulsion is a rubber asphalt emulsion in which a known resin and asphalt components are dispersed in a water-containing solvent.

As the rubber asphalt emulsion, one obtained by a known production method can be used. For example, asphalt and / or asphalt is mixed with rubber, polymer, etc. in the presence of an emulsifier in water or a water-containing solvent and modified. A material in which asphalt (modified asphalt) and rubber and / or polymer are emulsified and dispersed can be used.
In particular, rubber asphalt emulsions are obtained by emulsifying and dispersing asphalt modified by mixing rubber, polymer, etc. with asphalt in the presence of an emulsifier in water or a water-containing solvent, or modified asphalt and further rubber and / or polymer. Can be used.
The rubber asphalt emulsion is prepared by a known method such as a method in which rubber and / or polymer and heat-melted asphalt or modified asphalt in which rubber and / or polymer is mixed with asphalt are mixed through an emulsifier. Can be.

As the emulsifier, known ones can be used, and examples thereof include anionic, nonionic, cationic or amphoteric surfactants and protective colloids such as polyvinyl alcohol.
Rubber asphalt emulsion contains water-free powder emulsion. When powder emulsion is used, all components excluding water can be packaged in one package, and it can be used simply by adding water at the construction site. is there.

  The solid content contained in the rubber asphalt emulsion is preferably 35 to 70% by mass, and more preferably 45 to 65% by mass in the water-containing rubber asphalt emulsion, from the viewpoint of handling and workability.

In rubber asphalt emulsion,
1) Rubber components include natural rubber, ethylene propylene diene copolymer rubber, ethylene butene copolymer rubber, polyisoprene, isoprene / butadiene copolymer, styrene / butadiene copolymer (for example, SBS, SBR, etc.), styrene / Isoprene block copolymer rubbers and their hydrogenated products, methacrylate / butadiene copolymers, acrylate / butadiene copolymers, acrylonitrile / butadiene copolymers, polybutadiene, polychloroprene, polyisobretin, butyl rubber, polyurethane, etc. Modified products in which functional groups such as these carboxyl groups and glycidyl groups are introduced,
2) Polymer components include polyethylene, polypropylene, polybutene, polystyrene, ethylene / acrylate copolymer, ethylene / methacrylate copolymer, vinyl acetate / acrylate copolymer, vinyl acetate / methacrylate copolymer, ethylene / vinyl acetate. Copolymers, vinyl acetate / fatty acid vinyl ester copolymers, copolymers of vinyl acetate and maleic acid, fumaric acid, itaconic acid, etc., alkyl methacrylate / alkyl acrylate copolymers, styrene / alkyl acrylate copolymers, Examples thereof include ethylene / alkyl acrylate copolymers, ABS resins, polyvinyl chloride, and the like, and modified products in which a functional group such as acid modification such as carboxyl group and maleic acid is introduced into these polymers.

As the asphalt, naturally occurring asphalt or asphaltite, petroleum asphalt such as straight asphalt, blown asphalt, cutback asphalt, or a mixture of these asphalts can be preferably used.
Asphalt can be used a small amount of oils such as process oil and lubricating oil, anthracene oil, pine oil, creosote oil and the like. Moreover, an anti-aging agent can also be added.

  The rubber content of the modified asphalt compound layer includes natural rubber, synthetic rubber, such as polybutadiene, ethylene propylene diene copolymer rubber, styrene butadiene random copolymer rubber, and styrene butadiene triblock copolymer thermoplastic elastomer. Is mentioned.

As a polymer emulsion excluding rubber asphalt emulsion,
Synthetic resin emulsion, polyvinyl acetate emulsion, copolymer emulsion of ethylene and vinyl acetate, ethylene, copolymer copolymer of vinyl acetate and (meth) acrylic acid derivative, copolymer of ethylene and (meth) acrylic acid derivative Combined emulsion, emulsion of poly (meth) acrylic acid derivative, copolymer emulsion of styrene and (meth) acrylic acid derivative, polychloroprene latex, copolymer emulsion of vinyl acetate and vinyl chloride, copolymer of styrene and butadiene Use an emulsion of synthetic resin containing at least one kind of ethylene, styrene, vinyl acetate, (meth) acrylic acid derivative, such as emulsion, copolymer emulsion of acrylonitrile and butadiene, emulsion of vinyl acetate and (meth) acrylic acid derivative, etc. Can The (meth) acrylic acid derivative means acid derivatives such as acrylic acid, methacrylic acid, and esters thereof.
Any glass transition temperature of the polymer component contained in the emulsion can be used.

  As the polymer emulsion, one obtained by a known production method can be used. For example, in the presence of an emulsifier, a polymerization monomer used as a raw material for a synthetic resin in water or a water-containing solvent is used with a polymerization initiator. It can be produced by a method of emulsion polymerization.

As the emulsifier, known ones can be used, and examples thereof include anionic, nonionic, cationic or amphoteric surfactants and protective colloids such as polyvinyl alcohol.
As the polymerization initiator, those capable of radical polymerization in water or a water-containing solvent are preferable, and examples thereof include hydrogen peroxide, peracetic acid, persulfuric acid, water-soluble peroxides such as ammonium salts and sulfates thereof, and salts thereof. be able to. Further, organic peroxides such as benzoyl peroxide, t-butyl hydroperoxide, 2,2′-azobisisobutylnitrile, and reducing agents such as sodium metasulfite and sodium pyrosulfite can be used in combination.
The amount of the polymerization initiator used can be appropriately selected as long as the emulsion can be produced.

  The polymer emulsion contains a powder emulsion that does not contain water. If a powder emulsion is used, all components except for the water can be combined into one package, and it can be used simply by adding water at the construction site. is there.

  The hydraulic composition of the present invention can be uniformly adjusted by mixing with a general mixer. As the mixer, a known mixer can be used, and examples thereof include a Nauter mixer, a ribbon mixer, and an omni mixer.

  The hydraulic composition of the present invention is mixed with a general mixer to uniformly adjust the composition, and in addition to cement packaging bags, paper bags, polyethylene bags, and polyvinyl bags that are generally used in a powder state. In addition, it can be stored in a metal / organic airtight container having no contact with outside air.

The hydraulic composition of the present invention is mixed with rubber asphalt emulsion and further with water as necessary to adjust mortar, concrete, self-leveling material, grout material, etc., and general civil engineering / building structures, and floors thereof. It can be used as an undercoat conditioning material.
When used as a self-leveling material, the alumina cement hydraulic composition of the present invention can be used as a floor base material or a floor base material in a factory, a warehouse, a parking lot, a gas station, a kitchen or the like.
The hydraulic composition of the present invention can be used as an undercoat preparation excellent in workability, smoothness, fast curing, adhesiveness, and temporary waterproofing properties by mixing and stirring with a rubber asphalt emulsion.

  The base material of the present invention is a mixture of the hydraulic composition of the present invention and a rubber asphalt emulsion, and further mixed and stirred as necessary. Can be adjusted by applying and flowing the material smoothly using a roller brush or the like, and the base can be adjusted smoothly together with the self-leveling property of the material itself.

The base preparation of the present invention, in which the hydraulic composition of the present invention and rubber asphalt emulsion, and water as necessary are mixed at a constant ratio, has a pot life of 0.5 to 35 ° C in a temperature range of 5 ° C to 35 ° C. It has a length that does not hinder actual use for 3 hours, and when it is thinly coated with a coating thickness of 1 mm to 3 mm, it can be cured by drying and hydration for 0.5 hour even when coated with a thickness of 3 mm to 30 mm. It can be set to 6 hours, and the risk of coating film destruction due to rain and other obstacles can be reduced.
Further, as a waterproof performance of the cured body, the water permeation amount of JIS A 1404 (1 hour, 9.8 kPa) is 1 g or less, and possesses temporary waterproof property or waterproof property.

The ground surface adjustment material of the present invention is to repair the waterproof layer on the roof of a general building or a roof balcony. (1) The entire surface of the old waterproof layer is removed, and the ground surface adjustment material is used with a waterproof surface adjustment material. After performing a complete renovation to install a new waterproof layer,
Or (2) A new waterproof layer after partially removing a rising portion of the old waterproof layer, a defective portion such as swelling, peeling or cracking and performing a base adjustment using a waterproof base adjustment material It can be used as a waterproof base adjustment material for partial renovation.

  The ground adjustment material of the present invention has a working time of 0.5 hours or more in the temperature range of 5 ° C. to 35 ° C., when the working time is shorter than the above range, the construction work time of the ground conditioning material is short. The construction may become difficult, which is not preferable. In addition, when the length is longer than the above range, not only the connection to the next process is deteriorated, but also there is a high possibility that the outflow loss of the base preparation material due to rain or the like is increased, which is not preferable.

The base material of the present invention is a base material for waterproof layer construction, and is an asphalt waterproof layer at the time of repair such as thermal asphalt waterproofing, a waterproof layer removal base, a base for waterproof layer construction at the time of new construction, repair, and repair.
In particular, the base material of the present invention requires thick coating at the time of start-up or removal of the old waterproofing layer part, and the effect is effective for construction where temporary waterproofing is required at an early stage until construction of the new waterproofing layer. Is excellent.
The provisional waterproofing effect in the present invention means that a smooth cured waterproofing film is formed at an early stage after pouring the base conditioning material on the waterproof layer removal part, and water leakage into the building due to rainfall from the outside etc. This is an effect to prevent with a base material for a short period until the construction of a new waterproof layer.

  When the modified asphalt emulsion is used, the primer preparation of the present invention does not require a primer when the new waterproof layer is an asphalt waterproof layer, and the process can be omitted.

The foundation | substrate adjustment material of this invention is excellent in adhesiveness with asphalt type | system | group waterproofing layers, such as the modified asphalt roofing for torch construction methods constructed as a new waterproofing layer.
The base material obtained by mixing the hydraulic composition of the present invention and the rubber asphalt emulsion is applied in a wide temperature range from low temperature to high temperature while maintaining sufficient fluidity and fluid holding time as the base material. Not only is it excellent in workability, it also has an early opening property that can be opened on the same day of construction even in the case of thick coating in addition to thin coating. Moreover, since the hardened | cured material excellent in smoothness, watertightness, and storage stability is given, the utility value as a base material is great.

  Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. However, the present invention is not limited to these examples. The raw materials and evaluation methods used in the present invention are as follows.

(1) Raw materials used: The following raw materials were used in the implementation.
1] Main agent (emulsion)
・ Asphalt emulsion: SBS modified asphalt emulsion (commercially available)
2] Curing agent (powder of hydraulic composition)
Alumina cement: Commercially available alumina cement (type 3 according to JIS R-2511).
Portland cement: Early strong Portland cement (manufactured by Ube Industries), Blaine specific surface area of 4500 cm ² / g.
Gypsum: type II anhydrous gypsum, Blaine specific surface area 4000 cm ² / g.
-Aggregate: No. 6 silica sand.
-Fluidizer: Melamine fluidizer (commercially available).
Curing accelerator: Lithium carbonate (commercial product).
-Setting delay agent: sodium citrate (commercial product), sodium bicarbonate (commercial product).
-Antifoaming agent: Polyether type antifoaming agent (commercially available product).
Silicone oil: Methyl hydrogen polysiloxane silicone oil (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KF-99).

(2) Fluidity evaluation method of test specimen The fluidity evaluation of a mixed material obtained by mixing a main agent composed of asphalt emulsion and a curing agent composed of hydraulic powder at a weight ratio of a predetermined amount (17:25) and stirring for 3 minutes is as follows. , In accordance with JASS15M-103. In other words, a vinyl chloride pipe (internal volume 100 ml) having an inner diameter of 50 mm and a height of 51 mm is placed on a 5 mm thick sheet glass and filled with a concrete composition, and then the pipe is pulled up. After the spread stopped, the diameters in two directions at right angles were measured, and the average value was taken as the flow value. The flow value was measured by lightly kneading the material immediately after the mixing of the material and after 30 minutes from mixing.
(3) Curing time measurement method of test body The curing time of the test body after mixing was measured when the hardness was 90 or more using a rubber hardness meter (manufactured by Kobunshi Keiki Co., Ltd.).
(4) Water permeability measurement method of test body The water permeability of the test body was measured according to the test method of JIS A1404 building cement waterproofing agent.
(5) Storage stability test method of hydraulic powder The hydraulic powder was put into a 25 kg kraft bag, which is a general packaging container, and stored under constant conditions of 35 ° C. and relative humidity of 65% for a predetermined period. The hydraulic powder and the main ingredient (rubber asphalt emulsion) stored for a specified period of time are mixed and stirred at a weight ratio of 25:17, and the fluidity evaluation in (2) and the curing time measurement in (3) are performed to ensure stable storage. A sex test was performed.

[Examples 1 and 2, Comparative Examples 1 and 2]
The hydraulic components shown in Table 1 were mixed and stirred by a Hobart mixer to obtain hydraulic powder. After storing the hydraulic powder for a predetermined period, a storage stability test was conducted, and the results are shown in Table 2.
In addition, the example which used 1: 3 mortar as a hydraulic component is shown.

[Examples 3-5, Comparative Examples 3-4]
The hydraulic components shown in Table 1 were mixed and stirred by a Hobart mixer to obtain hydraulic powder. The obtained hydraulic powder and the main agent (rubber asphalt emulsion) were mixed and stirred at a ratio shown in Table 3 and cured and molded in a predetermined mold to obtain a test specimen. The water permeability of the obtained specimen was measured, and the results are shown in Table 3.

  The slurry obtained by mixing and stirring the hydraulic powder and the main agent (rubber asphalt emulsion) used in Examples 1 to 5 has stable curing time and fluidity, excellent workability, and sufficient temporary waterproofing. It is a base material with a high hydration curing rate and stable workability and workability.

Claims (6)

It is a hydraulic composition used as a base preparation that has waterproofness mixed with a rubber asphalt emulsion,
The hydraulic composition includes a hydraulic component including alumina cement and a hydrogen polysiloxane silicone oil,
A hydraulic composition comprising 0.01 to 4 parts by mass of hydrogen polysiloxane silicone oil based on 100 parts by mass of alumina cement.   The hydraulic composition according to claim 1, wherein the hydraulic component further contains Portland cement and gypsum.   2. The hydraulic composition according to claim 1, wherein the hydraulic component includes 20 to 200 parts by mass of Portland cement and 10 to 80 parts by mass of gypsum with respect to 100 parts by mass of the alumina cement.   The hydraulic composition according to any one of claims 1 to 3, wherein the hydraulic composition further contains a water reducing agent, a curing rate adjusting agent, and an antifoaming agent.   The hydraulic composition according to any one of claims 1 to 4, wherein the hydraulic composition further includes an aggregate. It is a foundation preparation material having waterproofness in which a hydraulic composition and a rubber asphalt emulsion are mixed, and the hydraulic composition is the hydraulic composition according to claims 1 to 5, and is contained in the hydraulic composition. A base material comprising 25 to 50 parts by mass of a solid content of a rubber asphalt emulsion with respect to 100 parts by mass of a component.