JPH08134430A - Antifreezing and recovering agent for porous solid and its production - Google Patents

Abstract

PURPOSE: To surely prevent the freezing of water on the surface of and in pores of a water-permeable and -draining pavement in winter or in cold districts to thereby maintain the water-permeable and -draining function. CONSTITUTION: The antifreezing and recovering agent for a porous solid of the invention contains 50.0-70.0wt. complex-ion-forming material obtd. by mixing and reacting dolomite, phosphoric acid, and a carboxylic acid, 8.0-15.0wt.% at least one deliquescent moisture-absorbing substance selected from among potassium acetate, calcium chloride, and magnesium chloride, 6.5-18.0wt.% at least one kind of hydrophobic porous particles selected from among baked hydrophobic perlite particles, expanded mica particles. shirasu balloon particles, and porous synthetic resin particles, and 8.5-24.0wt.% at least one hydrophilic powder selected from among a quartz powder, a lava powder, a pumice powder, and a foamed glass powder. Pores of the hydrophobic porous particles are filled with the complex-ion-forming material and the deliquescent moisture- absorbing substance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid antifreezing agent for solids, and in particular, it retains the water permeability or drainage function of a water-permeable and drainage pavement such as a porous road that can remove water accumulated on the road surface. It relates to antifreeze rejuvenating agents for porous solids and methods for their preparation.

[0002]

Water permeable and drainage pavements have been developed in order to prevent a decrease in water retention due to the expansion of urban development. On impermeable paved roads, water easily accumulates on the road surface, which causes traffic accidents and slips due to the hydroplane phenomenon. On the other hand, in the water-permeable and drainage paved road, water is unlikely to stay on the road surface, so that it is possible to improve the safety of vehicle traveling in rainy weather. The water-permeable pavement has a porous structure in which aggregate such as natural stone or ceramic is mixed with a synthetic resin such as an epoxy resin or a modified asphalt as a binder and heat-cured. In addition, the drainage pavement has a structure in which a water-permeable pavement is formed on an upper layer of the water-impermeable pavement, and water that permeates the water-permeable pavement is drained. Water-permeable and drainage pavements can use a high-porosity asphalt mixture to permeate water and eliminate water retained on the pavement. However, in the water-permeable and drainage pavement in winter or in cold regions, water on the pavement surface and pores freezes and becomes clogged, which significantly reduces the water permeability and drainage function of the pavement. Further, the water-permeable and drainage pavement is clogged by dust or earth and sand invading the pores of the pavement after a long-term use, and the permeation action of rainwater into the ground is remarkably destroyed. The clogging substances containing dust or earth and sand that have entered the pores are mainly silicon dioxide (SiO ₂ ), iron (F
Glass and gravel made of metal compounds such as e). For example, Japanese Examined Patent Publication No. 61-47249 discloses a water permeability recovery method in which pressured water is sprayed on the surface of a water permeable pavement to remove clogging substances. JP-A-63-223
No. 206, JP-A-3-137310, JP-A-4-115005, and JP-A-4-115006 disclose the function recovery of a water-permeable or drainage pavement in which high-pressure water is injected and sucked together with a clogging substance. A device is disclosed.
Further, JP-A-6-33428 discloses a water-permeable pavement in which particles of clogging substances in pores that are applied to a water-permeable pavement by applying a foaming solution and floated on the surface are suction-collected together with sprinkled water. The cleaning method and the cleaning device are shown. Further, Japanese Patent Publication No. 5-85591 discloses a freezing point depressant for road freezing and a road antifreezing agent using the same. The freezing point depressant for road freezing contains the reaction product obtained by adding phosphoric acid and organic carboxylic acid to dolomite and mixing them to obtain an active ingredient. The road antifreezing agent is a mixture of hydrophilic particles and hydrophobic particles, which is mixed with a freezing depressing agent for road antifreezing and is contained in the pores of the hydrophobic porous particles. The hydrophobic porous particles are selected from the group consisting of calcined perlite particles, expanded mica particles, shirasu balloon particles, and synthetic resin porous particles.

[0003]

When water stays on the road surface due to deterioration of the water permeability and drainage function of the water-permeable and drainage pavement, the water on the road surface freezes in winter or in cold regions to reduce the slip resistance. The safety of vehicle running cannot be ensured. Therefore, in order to maintain the water permeability and drainage function of the pavement, it is necessary to prevent freezing of water in the pores. Further, it is necessary to remove the clogging substance in the pores and regenerate the water permeation function and the drainage function. The conventional method and apparatus for recovering the function of a water-permeable and drainage pavement is designed so that a clogging substance such as dust or earth and sand that has entered the pores is lifted by high-pressure water or a foaming solution, and then suctioned together with water or the foaming solution. Collect by device. However, it is difficult to completely float all the clogging substances invading the pores by the high pressure water or the effervescent solution, and even if the clogging substances are floated, it is accompanied by the permeation of water before the suction. Since it returns to the inside of the pores, it cannot be reliably recovered. Furthermore, when the water content in the pores in which dust or earth and sand have entered is frozen, the high-pressure water or the foaming solution does not penetrate into the pores, and it is impossible to float the clogging substance. Therefore, the present invention is an antifreeze recovery agent for a porous solid that reliably prevents water from freezing in the paved road surface and pores of a water-permeable and drainage pavement in the winter or in cold regions to maintain the water-permeable function and drainage function. And its manufacturing method.

[0004]

The antifreeze rejuvenating agent for a porous solid according to the present invention is a complex ion product of 5.0 to 5 obtained by mixing and reacting dolomite, phosphoric acid and carboxylic acid on a weight basis. 70.0% and 1 selected from the group consisting of potassium acetate, calcium chloride and magnesium chloride
Or two or more deliquescent hygroscopic substances 8.0-15.0%, and one or more selected from the group consisting of calcined hydrophobic perlite particles, expanded mica particles, shirasu balloon particles, and synthetic resin porous particles. Hydrophobic porous particles 6.5 to 18.0% and one or more hydrophilic particles 8.5 to 24 selected from the group consisting of quartz powder, lava powder, pumice powder and expanded glass powder.
Including 0%. The complex ion product and the deliquescent hygroscopic substance are filled in the pores of the hydrophobic porous particles. The method for producing the antifreeze rejuvenating agent for a porous solid according to the present invention is selected from the group consisting of complex ion products obtained by mixing dolomite, phosphoric acid and carboxylic acid and reacting them, potassium acetate, calcium chloride and magnesium chloride. Mixing one or more deliquescent hygroscopic substances, and calcined hydrophobic perlite particles,
A mixture of a complex ion product and a deliquescent hygroscopic substance is mixed with one or more hydrophobic porous particles selected from the group consisting of expanded mica particles, shirasu balloon particles, and synthetic resin porous particles to form a hydrophobic porous particle. Filling the pores of the particles with complex oi product and deliquescent hygroscopic material, quartz powder, lava powder,
And mixing one or more hydrophilic particles selected from the group consisting of pumice powder and expanded glass powder with hydrophobic porous particles.

The complex ion product is a reaction product obtained by adding a mixed acid of phosphoric acid and a carboxylic acid to naturally occurring dolomite (a carbonate mineral of calcium / magnesium) and carrying out a mixing reaction. Natural dolomite is CaCO ₃ · MgC
The main component is a double salt represented by O ₃ or Ca.Mg (CO ₃ ) ₂ . When a mixed acid of phosphoric acid (H ₃ PO ₄ ) and a carboxylic acid such as acetic acid (CH ₃ COOH) is reacted under heating, for example, MgHPO ₄ .Mg (CH ₃ COO) ₂ and CaHPO ₄
A compound represented by Ca (CH ₃ COO) ₂ is obtained. In addition,
A small amount becomes Mg ₃ (PO ₄ ) ₂ and Ca ₃ (PO ₄ ) ₂ . As carboxylic acid, in addition to acetic acid, formic acid, propionic acid, butyric acid, valeric acid, benzoic acid, acrylic acid, crotonic acid, isocrotonic acid, propiolic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid , Maleic acid, tricalivariic acid, trimesic acid and the like can be used. It is also possible to use a mixture of two or more carboxylic acids selected from these groups.

[0006]

[Function] The reaction product of dolomite, which is a complex ion product, and phosphoric acid / carboxylic acid contains phosphate ion, carboxylate ion (eg, acetate ion), calcium ion, magnesium ion, and a combination of these ions. It forms a complex salt and coordinates with water molecules through intermolecular interactions to lower the freezing point, thus preventing freezing of water and exhibiting excellent antifreezing performance. Further, when the reaction product phosphoric acid groups (PO ₄ ³ ~) and carboxyl groups (COO ~) coexist in the state of complex ionization in contact with rain and snow, silicon dioxide contained in glass and gravel is generated. Also, it dissolves metal compounds, etc. to form a complex salt, and the complex salt formed disperses in water and becomes a colloid, so it is removed from the pores along with water permeation and drainage, eliminating clogging in the pores due to dust or earth and sand. can do. Since the deliquescent hygroscopic substance lowers the freezing point of water to −10 to −30 ° C., the deliquescent hygroscopic substance is more reliably prevented by mixing the deliquescent hygroscopic substance with the complex ion product. The freezing can be melted by the exothermic action at the time of melting. Since the complex ion product and the deliquescent hygroscopic substance are both water-soluble and rich in hygroscopicity, it is necessary to prevent the complex ion product and the deliquescent hygroscopic substance from being dissolved by moisture in the air or absorbed by moisture to aggregate. On the other hand, the method of filling the complex ion product and the deliquescent hygroscopic substance into the pores of the hydrophobic porous particles is very effective. However, since the porous particles are water-repellent and hydrophobic, the elution rate of the complex ion product and the deliquescent hygroscopic substance filled in the pores is small. Therefore, by adding hydrophilic particles, the hydrophilic particles are distributed along the circumference of the hydrophobic porous particles and attract water, so that the complex ion product and the deliquescent hygroscopic substance filled in the pores of the hydrophobic porous particles are attracted. Elutes well. Therefore, while maintaining the hydrophobic property (water repellency) of the entire fine particle mixture, the complex ion product and deliquescent hygroscopic substance filled in the pores of the hydrophobic porous particles are removed by rain and snow and permeation and drainage in the pores. It can be gradually leached to exert an antifreezing function. The content of the complex ion product in the antifreeze rejuvenating agent for the porous solid is preferably 50.0% or more in order to form a sufficient complex salt, and from the blending ratio with the hydrophobic porous particles, 70.0% or less. Is preferred. 70.0%
If it exceeds, the soil and groundwater may be contaminated by excess complex ions that are not filled in the pores of the hydrophobic porous particles. When the deliquescent hygroscopic substance is less than the lower limit of the composition ratio of 8.0%, it is impossible to prevent the freezing of water and melt the freezing. On the other hand, if it exceeds 15.0%, it may corrode the metal and pollute the environment. If the content of the hydrophobic porous particles is less than 6.5%, the complex ion product and the deliquescent hygroscopic substance cannot be sufficiently filled in the pores, and if it exceeds 18.0%, the antifreezing effect is lowered. . If the hydrophilic particles are less than 8.5%, the water around the hydrophobic porous particles separates from the hydrophobic porous particles and a sufficient anti-freezing effect cannot be obtained.
If it exceeds 24.0%, the freezing point is not sufficiently lowered.

The antifreezing agent according to the present invention is used by being sprayed on the paved road surface of a water-permeable and drainage pavement. It prevents freezing on the paved road surface and pores to melt the freezing and removes the clogging substances in the pores to maintain the water permeability and drainage function. The complex ion product and the deliquescent hygroscopic substance filled in the pores of the hydrophobic porous particles gradually elute on the road surface due to the contact with rain and snow on the pavement surface and the destruction of the porous particles by vehicles. Since this antifreeze recovery agent is a mixture of fine particles, it easily penetrates into the pores and stays there, and is gradually leached by permeation drainage. Therefore, the functions of preventing freezing and regenerating the pores can be maintained for a long time on the pavement surface and in the pores. It is also possible to mix the antifreezing agent with a water-permeable pavement material and then pave the road for use. The complex ion product and the deliquescent hygroscopic substance filled in the pores of the hydrophobic porous particles gradually elute on the road surface due to the abrasion or destruction of the porous particles as the road wears and prevents the paving surface from freezing. By filling the pores of the hydrophobic porous particles with the complex ion product and the deliquescent hygroscopic substance, unnecessary moisture due to the hygroscopicity of the complex ion product and the deliquescent hygroscopic substance is brought into the road pavement material. Prevents a decrease in pavement strength.

[0008]

EXAMPLE To carry out the present invention, a width of 6.5% on the existing asphalt pavement with a gradient of 2% from the center of the road to both sides.
m, length 200 m, depth (thickness) 4 cm, porosity 20%
A test section was constructed in which drainage pavement was constructed using ascon of open particle size (porosity). The antifreezing agent according to the present invention was sprayed on the test section one month after the construction of the drainage pavement at a temperature of -5 to -15 ° C. The degree of antifreezing was measured by measuring the weight of the sponge body peeling from the road surface after a certain period of time after placing a sponge body having a width of 110 mm, a depth of 70 mm, and a height of 30 mm impregnated with 250 g of water on the road surface. Temperature Celsius −5
At −15 ° C., the sponge body does not peel off from the road surface unless the antifreeze recovering agent for porous solid according to the present invention is applied.
The degree of freeze protection could not be measured. Example 1 15% to 1000 g of dolomite having an average particle size of 10 to 15 mm
Phosphoric acid (70 g) and 10% acetic acid (400 g) were gradually added and mixed sufficiently, and reacted at 110 to 150 ° C. for 30 to 40 minutes while stirring in a reaction tank to obtain dolomite (95%) and phosphoric acid (1%) / acetic acid (4%). A complex ion product was obtained. 60% of the obtained complex ion product and 10% of potassium acetate are mixed,
2% of calcined hydrophobic perlite particles and 15% of expanded polyurethane particles were filled in the pores, 3% of quartz powder and 10 of lava powder
% To obtain a particle mixture having an average particle size of 0.1 mm or less. The obtained antifreezing recovery agent was sprayed on the test section. When the anti-freezing degree was measured at an air temperature of -5 ° C, it was 8.0k.
It was g. The sponge body did not peel off from the road surface where the antifreezing recovery agent was not sprayed. Example 2 15% to 1000 g of dolomite having an average particle size of 10 to 15 mm
Phosphoric acid (70 g) and 10% propionic acid (400 g) were gradually added and mixed sufficiently, and the mixture was mixed at 110 to 150 ° C. for 30 to 4
Dolomite 95 by reacting for 0 minutes with stirring in a reaction kettle
%, Phosphoric acid 1% and propionic acid 4% were obtained as complex ion products. 60% of the obtained complex ion product and calcium chloride 1
3% was mixed and filled in the pores of 2% of calcined hydrophobic perlite particles and 15% of expanded polyurethane particles, and lava powder 10
% To obtain a particle mixture having an average particle size of 0.1 mm or less. The antifreezing agent thus obtained was sprayed on the test section and the antifreezing degree was measured at an air temperature of -5 ° C.
It was g. The sponge body did not peel off from the road surface where the antifreezing recovery agent was not sprayed. Example 3 Dolomite 95% obtained in Example 1 and phosphoric acid 1% / acetic acid 4%
Of the complex ion product of 60%, magnesium chloride of 10%, and salt of 1% are mixed and filled into the pores of the calcined hydrophobic perlite particles of 1% and the expanded polyurethane particles of 15%, and the quartz powder 3
% And lava powder 10% mixed and crushed to an average particle size of 0.1 mm
The following particle mixture was obtained. The antifreezing agent thus obtained was sprayed on the test section, and the antifreezing degree was measured at an air temperature of -15 ° C., resulting in 9.2 kg. The sponge body did not peel off from the road surface where the antifreezing recovery agent was not sprayed. Example 4 Dolomite 95% obtained in Example 1, phosphoric acid 1%, acetic acid 4%
50% of the complex ion product of the above and 15% of potassium acetate are mixed and filled in the pores of the calcined hydrophobic perlite particles of 5% and the foamed polyurethane particles of 10%, and oil smoke (carbon black)
1%, cement 2%, quartz powder 2% and lava powder 15%
Was mixed and pulverized to obtain a particle mixture having an average particle size of 0.1 mm or less. Disperse the obtained antifreeze recovery agent on the test section,
When freeze protection degree was measured at an air temperature of -10 ° C, it was 8.6 kg.
Met. The sponge body did not peel off from the road surface where the antifreezing recovery agent was not sprayed. Example 5 15% in 1000 g of dolomite having an average particle size of 10 to 15 mm
Phosphoric acid (70 g), 10% acetic acid (200 g) and 10% propionic acid (200 g) were gradually added and mixed sufficiently,
The reaction was carried out at 150 ° C. for 30 to 40 minutes while stirring in the reaction vessel to obtain a complex ion product of dolomite 95%, phosphoric acid 1%, acetic acid 2% and propionic acid 2%. The obtained complex ion product (52%) was mixed with calcium chloride (10%), and the resulting mixture was filled in the pores of calcined hydrophobic perlite particles (6%) and expanded polyurethane particles (10%), cement (1%) and lava powder (21%).
Was mixed and pulverized to obtain a particle mixture having an average particle size of 0.1 mm or less. Disperse the obtained antifreeze recovery agent on the test section,
When freeze protection degree was measured at an air temperature of -10 ° C, it was 7.9 kg.
Met. The sponge body did not peel off from the road surface where the antifreezing recovery agent was not sprayed.

Deliquescent and hygroscopic substances which prevent freezing of water and drainage and melt ice are those which show deliquescent properties, such as chloride aluminum chloride / AlCl ₃ , bromide aluminum bromide / AlBr ₃ and iodide. Aluminum iodide / AlI ₃ , Nitric oxide aluminum nitrate nonahydrate / A
_{l (NO 3) 3 · 9H} 2 O, barium nitrate / Ba (NO _{3) 2,}
Beryllium fluoride / BeF ₂ fluoride, chloride beryllium / BeCl _2, beryllium bromide / BeBr _2, beryllium nitrate trihydrate _{/ Be (NO 3) 2 ·} 3H 2 O, bismuth chloride / BiCl _3, bismuth bromide / BiBr _3, calcium chloride / CaCl _2, calcium bromide / CaBr _2, calcium iodide / CaI _2, calcium nitrite monohydrate / Ca (NO ₂₎ nitrite compound ₂ · H ₂ O, calcium nitrate four hydrate _{/ Ca (NO 3) 2 ·} 4H 2 O, cerium chloride (III) / A
eCl ₃ , cerium (III) nitrate hexahydrate / Ce (NO ₃ ) ₃ ·
6H ₂ O, ammonium cerium nitrate / Ce (NH ₄ ) ₂ (N
O ₃ ) ₆ , cobalt bromide / CoBr ₂ , cobalt (II) iodide
/ CoI ₂ , cobalt nitrate (II) hexahydrate / Co (NO ₃ ) ₂ ·
6H ₂ O, chromium (II) chloride / CrCl ₂ , cesium chloride /
CsCl, cesium iodide / CsI, hydroxide cesium hydroxide / CsOH, sulfide cesium sulfide tetrahydrate /
Cs ₂ S ・ 4H ₂ O, cesium carbonate carbonate / Cs ₂ C
O ₃ , copper (II) chloride dihydrate / CuCl ₂ .2H ₂ O, copper (II) nitrate trihydrate / Cu (NO ₃ ) ₂ 3H ₂ O, iron (II) chloride
Tetrahydrate / FeCl ₂ · 4H ₂ O, ferric bromide (III) / FeB
r ₃ , iron (II) iodide / FeI ₂ , iron (III) sulfate nonahydrate /
_{Fe 2 (SO 4) 3 ·} 9H 2 O, iron (III) nitrate nonahydrate / Fe
_{(NO 3) 3 · 9H 2} O, trichloride iodine / ICl _3, iodine pentoxide / I ₂ O _5, hydroxides of potassium hydroxide / KOH, potassium sulfide / K ₂ S, potassium thiosulfate thiosulfate product / 3K ₂ S ₂ O ₃ · H ₂ O, potassium nitrite / KNO ₂ , phosphoric oxide dipotassium hydrogen phosphate / K ₂ HPO ₄ , metaborate potassium metaborate / KBO ₂ , molybdenum oxide molybdic acid Potassium / K ₂ MoO ₄ , potassium acetate / KCH ₃ COO, magnesium chloride potassium hexahydrate / KMgCl ₃ · 6H ₂ O, lithium chloride / LiC
1, lithium bromide / LiBr, lithium iodide / Li
I, lithium sulfide / Li ₂ S, lithium nitrate / LiN
O _3, magnesium chloride hexahydrate / MgCl ₂ · 6H
₂ O, magnesium bromide / MgBr _2, magnesium bromide hexahydrate / MgBr ₂ · 6H ₂ O, magnesium nitrate hexahydrate _{/ Mg (NO 3) 2 ·} 6H 2 O, magnesium chloride hexahydrate / MgNH ₄ Cl ₃ .6H ₂ O, manganese (II) chloride / MnCl ₂ , manganese (II) iodide / MnI ₂ ,
Manganese (III) sulfate / Mn ₂ (SO ₄ ) ₃ , molybdenum fluoride
(VI) / MoF ₆ , molybdenum (IV) chloride / MoCl ₄ , molybdenum (IV) bromide / MoBr ₄ , hydrazinium chloride / N ₂
H ₆ Cl _2, ammonium bisulfite / NH ₄ HSO _3, ammonium thiosulfate _{/ (NH 4) 2 S 2} O 3, amide ammonium sulfate / NH ₄ SO ₃ NH _2, ammonium metaborate / NH ₄ BO ₂ · 1.25H ₂ O, nickel (II) chloride ammonium nitrate hexahydrate _{/ NH 4 Cl · NiCl 2 ·} 6H 2 O, sodium bromide / NaBr, sodium hydroxide / NaO
H, sodium sulfide / Na ₂ S, sodium phosphinate / NaPH ₂ O ₂ · H ₂ O, sodium phosphonate / N
aPHO ₃ · 5H ₂ O, sodium carbonate monohydrate / NaC
O ₃ · H ₂ O, nickel (II) chloride hexahydrate / NiCl ₂ ·
6H ₂ O, nickel bromide / NiBr ₂ , nickel iodide (I
I) / NiI ₂ , nickel nitrate (II) hexahydrate / Ni (NO ₂ )
₃ · 6H ₂ O, antimony chloride (III) / SbCl _3, antimony sulfate _{(III) / Sb 2 (SO} 4) 3, tin fluoride (IV) / Sn
F _4, tin bromide (IV) / SnBr _4, tin (IV) sulfate dihydrate _{/ Sn (SO 4) 2 ·} 2H 2 O, vanadium chloride / VCl _3,
Tungsten (IV) chloride / WCl ₄ , zinc bromide / ZnB
r _2, 18-crown _{-6 / (CH 2 CH 2 O} ) 6, ammonium acetate _{/ CH 3 CO 2 NH 4,} N, N- diethyl-urea /
_{(C 2 H 6) 2 NCONH} 2, Desokisaru acid / OH-HO ₂ C
_{CH-C (CO 2 H)} 2 · H 2 O-OH, m- nitrobenzenesulfonate _{/ C 6 H 4 (NO 2} ) (SO 3 H), 4- methylimidazole _{/ C 4 H 6 N 2:} [72 ] (CH ₃ ) Preventing freezing of water permeability and drainage, as deliquescent hygroscopic material to melt the ice, which shows the hygroscopicity, aluminum iodide hexahydrate / AlI ₃ · 6H ₂ O iodide, potassium aluminum sulphate sulfates / AlK (SO ₄ ) ₂ , boron triiodide / BI ₃ , nitric oxide bismuth (III) nitrate pentahydrate / B
_{i (NO 3) 3 · 5H} 2 O, calcium oxide oxide / Ca
O, calcium nitrate / Ca (NO _{3) 2,} calcium acetate product acetic acid _{/ Ca (CH 3 COO) 2} , fluorides of cobalt fluoride (III) / CoF _3, cobalt (II) / CoCl _2,
Cobalt acetate _{/ Co (CH 3 COO) 3} , chromium oxalate _{(III) / Cr 2 (C} 2 O 4) 3 · 6H 2 O of oxalic oxide, cesium fluoride / CsF, disulfide dicesium sulfide / Cs ₂
S _2, cesium acetate / Cs (CH ₃ COO), copper chloride chloride (II) / CuCl _2, tetrafluoroborate copper boric oxide (II) tetrahydrate _{/ Cu [BF 4] 2 ·} nH ₂ O, iron sulfate
(III) / Fe ₂ (SO ₄ ) ₃ , potassium bromide / KBr, potassium oxide / K ₂ O, potassium carbonate / K ₂ CO ₃ , potassium trithiocarbonate / K ₂ CS ₃ , potassium tungstate / K ₂
WO ₄ .2H ₂ O, sodium potassium carbonate hexahydrate (with weathering) / KNaCO ₃ .6H ₂ O, lithium dihydrogen phosphate / LiH ₂ PO ₄ , magnesium chloride / MgCl ₂ ,
Magnesium iodide / MgI ₂ , manganese dihydrogen phosphate
(II) Dihydrate / Mn (H ₂ PO ₄ ) ₂ · 2H ₂ O, ammonium phosphinate / (NH ₄ ) PH ₂ O ₂ , ammonium acetate / NH ₄ CH ₃ COO, sodium chloride / NaCl, iodide Sodium / NaI, sodium nitrite / NaN
O ₂ , sodium nitrate / NaNO ₃ , sodium aluminum dioxide / NaAlO ₂ , nickel (II) sulfate / NiS
O ₄ , platinum fluoride (IV) / PtF ₄ , selenium dioxide / SeO
₂ , titanium sulfate (IV) / Ti (SO ₄ ) ₂ , N, N ′ dimethylhydrazine / (CH ₃ ) ₂ NNH ₂ , diethyl (R, R ′) tartrate / [CH (OH) CO ₂ C ₂ H ₆ ] _2, tetrahydrofurfuryl alcohol _{/ -CH 2 CH 2 -CH 2 -O-} [CH
CH ₂ OH] -, 1,2,3,4- tetrahydro-2
Naphthol / C ₁₀ H ₁₂ O, P- nitrobenzenesulfonate _{/ C 6 H 4 (NO 2} ) (SO 3 H), promazine hydrochloride / C _{17
H 20 N 2 S · HCl,} 2- bromoethanol / BrCH ₂
CH ₂ OH, N-methylhydroxylamine / CH ₃ NH
OH, 3-methoxy-1,2-propanediol / HO
_{CH 2 CHCH 2 OCH 3 -OH,} 6- methoxyquinoline / C ₁₀ H ₉ NO: is [121] (OCH _3).

[0010]

As described above, according to the present invention, the water permeability and drainage function can be surely prevented by preventing the freezing of water on the pavement surface and the pores of the water permeability and drainage pavement in winter or in cold regions. Since it can be held, it is possible to prevent a traffic accident in a cold region.

Claims (2)

[Claims] 1. A complex ion product 5 obtained by mixing and reacting dolomite, phosphoric acid and carboxylic acid on a weight basis.
0.0 to 70.0%, and one or more deliquescent hygroscopic substances selected from the group consisting of potassium acetate, calcium chloride and magnesium chloride, 8.0 to 15.0%, and calcined hydrophobic perlite particles, One or more hydrophobic porous particles selected from the group consisting of expanded mica particles, shirasu balloon particles, and synthetic resin porous particles 6.5 to 18.0%
And one or more hydrophilic particles 8.5-2 selected from the group consisting of quartz powder, lava powder, pumice powder, and expanded glass powder.
4.0%, and the pores of the hydrophobic porous particles are filled with a complex ion product and a deliquescent hygroscopic substance. 2. A complex ion product obtained by mixing and reacting dolomite, phosphoric acid and carboxylic acid with one or more deliquescent hygroscopic properties selected from the group consisting of potassium acetate, calcium chloride and magnesium chloride. A step of mixing the substance with one or more hydrophobic porous particles selected from the group consisting of calcined hydrophobic perlite particles, expanded mica particles, shirasu balloon particles, and synthetic resin porous particles, and a complex ion product. Mixing a mixture with a deliquescent hygroscopic substance, filling the pores of the hydrophobic porous particles with a complex oi product and a deliquescent hygroscopic substance, and selecting from the group consisting of quartz powder, lava powder, pumice powder, and expanded glass powder. And a step of mixing the above-mentioned one or more hydrophilic particles and hydrophobic porous particles with each other.