WO1998007929A1 - STRUCTURE DE PAVE SUPPRIMANT NOx - Google Patents
STRUCTURE DE PAVE SUPPRIMANT NOx Download PDFInfo
- Publication number
- WO1998007929A1 WO1998007929A1 PCT/JP1997/002797 JP9702797W WO9807929A1 WO 1998007929 A1 WO1998007929 A1 WO 1998007929A1 JP 9702797 W JP9702797 W JP 9702797W WO 9807929 A1 WO9807929 A1 WO 9807929A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pavement
- layer
- weight
- asphalt
- parts
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/005—Means permanently installed along the road for removing or neutralising exhaust gases
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/305—Titanium oxide, e.g. titanates
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/23—Acid resistance, e.g. against acid air or rain
Definitions
- the present invention relates to N_ ⁇ x purifying paving structure, and more particularly the present invention, the surface layer or NOX purification action and excellent durability in a surface layer which is applied by over one Rayet method of pavement layer on pavement layer Regarding the NO x purification pavement structure that was provided. Background art
- this N_ ⁇ x is concentration metal oxide is known as a substance that Ru lowers the titanium oxide among these, in particular titanium dioxide is also known to have a strong photocatalytic action.
- titanium oxide can be contained in the entire concrete layer to obtain a NOx-purifying pavement structure, but in this case, a large amount of expensive titanium oxide is used, Not economically favorable. Therefore, the present inventors, in the case of the former asphalt pavement, do not directly add titanium oxide to the asphalt and carry it, but lay a kneaded material obtained by adding titanium oxide to cement on the asphalt surface. By using porous asphalt, NO x purification materials can penetrate into the pores of the asphalt to further improve durability. It has been found that durability can be obtained.
- the first problem to be solved by the present invention is that the surface on the pavement layer It is an object of the present invention to provide a NOx purification equipment having a layer having an N ⁇ x purification action and excellent durability.
- a second object of the present invention is to Sho solve is to provide a the NO x purification action and excellent NOx purification of pavement structures which gave durability in the surface layer which is applied by the overlay method of pavement layer . Disclosure of the invention
- paving includes a sidewalk and a road.
- NOx purifying ⁇ structure of the present invention exhibit the excellent action and effect as follows c
- the NOx purification pavement structure of the present invention comprises a pavement layer, 100 parts by weight of cement, 5 parts by weight to 50 parts by weight of titanium oxide powder, and 100 parts by weight of aggregate of 700 parts by weight. Parts by weight and a surface layer obtained from 5 to 100 parts by weight of water in the basic configuration.Since the surface layer contains cement and titanium oxide, NOx Pavement with purification performance and excellent durability can be obtained.
- the pavement layer is made of asphalt pavement, and the titanium oxide-containing surface layer is provided as a surface layer on the asphalt layer. Is not deteriorated by titanium oxide, and has excellent durability because the surface layer contains cement.
- the pavement layer is made of concrete pavement
- the titanium oxide can be contained only in the surface layer. Can be used efficiently.
- it since it has a surface layer containing cement on concrete pavement, The layers are firmly adhered and a more durable pavement is obtained.
- the pavement layer is constituted by a part of the existing asphalt pavement.
- the surface of the existing asphalt pavement is scraped off by the so-called overlay technique, and a surface layer containing cement and titanium oxide is provided on top of it, so there is no need to repeat the pavement from the beginning.
- the pavement layer is constituted by a part of the existing concrete pavement, so that not only the effect of the invention according to the above (3) is exhibited,
- the surface of the existing concrete pavement is scraped off by the so-called concrete-verley method, and a surface layer containing cement and titanium oxide is provided on top of it, so there is no need to repeat the pavement from the beginning.
- the thickness of the surface layer is 1 to 300 mm, whereby sunlight can be penetrated. At this thickness, the catalytic reaction of titanium oxide can be effectively performed.
- the surface layer is obtained from a kneaded material containing a high-performance water reducing agent, Since the fluidity of the kneaded material can be improved, construction can be performed efficiently.
- the surface layer contains 0.1 to 50 parts by weight of fiber, so that the surface layer has flexibility and Strength is imparted. As a result, the durability of the clothing can be obtained.
- the base layer of the asphalt layer is a concrete base layer. Therefore, the durability of the paved road is excellent.
- the base layer of the asphalt layer is a bedrock, whereby a strong base layer is formed. As a result, the durability of the paved road is excellent.
- the base layer of the asphalt layer is at least one selected from soil, crushed stone, and stone.
- the asphalt layer is a porous asphalt pavement. Part of the layer penetrates into the porous pores of the asphalt layer, so that the surface layer and the asphalt layer are firmly adhered to each other and a more durable pavement can be obtained.
- a blast furnace slag having a fineness of less than 400 m 2 Zg is used as an admixture in the surface layer with respect to a cement amount.
- the hydration reaction can be slowed down.
- FIG. 1 is a sectional view showing a N_ ⁇ x purifying asphalt pavement structure of the present invention
- FIG. 2 is a sectional view showing another example of NOx purifying paving structure of the present invention.
- FIG. 3 is a sectional view showing still another example of N_ ⁇ x purification paving structure of the present invention.
- N_ ⁇ x purification paving structure of the present invention the pavement layer and cement 1 0 0 parts by weight, 5 parts by weight to 5 0 parts by weight of titanium oxide powder, aggregate 1 0 0 part by weight to 7 0 0 parts by weight of water It is characterized by having a surface layer obtained from 5 to 100 parts by weight in order.
- the pavement layer includes asphalt and concrete pavement. This asphalt pavement is paved according to the usual asphalt road construction method.
- Examples of the construction method of this asphalt road include a method of constructing the asphalt layer of the present invention on a concrete base layer, a method of providing a styrene foam layer on a concrete base layer, and constructing the asphalt layer of the present invention thereon.
- the method more specifically, the method of constructing the asphalt layer of the present invention directly on the construction surface of the road, that is, the soil on the construction surface as the base layer, or laying gravel, stone, etc. as the base layer of the road, There is a method of constructing asphalt layers, etc.
- the construction method of asphalt road used in this technical field is used.
- asphalt for asphalt pavement is not particularly limited, but when applied on a concrete base layer, a material suitable for a concrete base layer is preferable, a modified asphalt is preferable, and a base asphalt mixture of a semi-flexible pavement material is The porosity is 20 to 28%.
- Concrete pavement for example, consists of a quarry subgrade, an asphalt intermediate layer, and concrete pavement in that order on a subgrade, and its construction method is well known in the concrete pavement technical field. Furthermore, the overlay method used in the present invention is based on the method used for existing asphalt pavement and the existing concrete In some cases, it is carried out on concrete pavement, and especially in the case of existing concrete pavement, the construction effect is greater.
- the concrete overlay method is implemented to restore the surface properties of existing concrete pavement and strengthen the structure.
- this concrete overlay method is a method in which an existing concrete slab is cut and subjected to an adhesion treatment, and then a new concrete is poured into a predetermined thickness.
- the new concrete 100 parts by weight of cement, 5 parts by weight to 50 parts by weight of titanium oxide powder, 100 parts by weight of aggregate of 700 parts by weight, and 5-1 part by weight of water are used. Consists of using a surface layer obtained from 100 parts by weight. To ensure that the existing concrete pavement adheres to the surface layer, the existing concrete pavement surface is preferably polished by a method such as shot blasting and then cleaned.
- a reflection crack prevention sheet stress relaxation layer or the like can be provided between the surface layer and the concrete layer.
- the sheet and the stress relieving layer not only prevent reflection cracks but also have a cleaning action of the concrete layer by rainwater.
- the form of adhesion between the existing concrete pavement and the surface layer includes an adhesion type, a semi-adhesion type, a non-adhesion type, and the like.
- the adhesion type is preferable.
- the cement used for the surface layer may be a commonly used cement, such as ordinary bolt land cement, early-strength portland cement, ultra-fast-strength portland cement, semi-flexible injection cement, and moderately hot cement.
- a commonly used cement such as ordinary bolt land cement, early-strength portland cement, ultra-fast-strength portland cement, semi-flexible injection cement, and moderately hot cement.
- examples include rootland cement, white cement, blast furnace cement, alumina cement, low heat cement, and ultra-hard cement, and among them, white cement is preferred because of its high NO x purification efficiency. If the center line is formed by using white cement, an excellent effect that the center line can be easily recognized together with the purification of NO x is obtained.
- the mixture serving as the surface layer used in the present invention may contain an inorganic admixture such as a pozzolanic substance or a blast furnace cement, an organic admixture if necessary, and other additives commonly used in the art. Good.
- This pozzolanic substance is added in an amount of 10 to 50% by weight based on the amount of cement.
- This pozzolanic substance or bozolan is a composition rich in silicon dioxide or alumina that has the property of reacting with calcium hydroxide or calcium ions in the presence of water to form a new hydrate.
- artificial pozzolans such as blast furnace slag, silica fume, and rice hull ash, and natural pozzolans caused by shirasu, clay, and volcanic ash.
- the pozzolanic reaction is a reaction that forms a new hydrate from pozzolane and calcium hydroxide or calcium ions.
- the hydrate generated by the pozzolane reaction is essentially the same as that of Portland cement ⁇ Low calcium hydrates are easily formed. If the added amount of the pozzolanic substance is less than 10% by weight based on the amount of cement, it is not sufficient to promote hardening, and if it exceeds 50% by weight based on the amount of cement, the relative cement content is relatively low. The amount becomes small, and the initial strength development becomes poor.
- admixture used for the surface layer if it is ⁇ slag, it is not preferable fineness is 4 0 0 0 m 2 Bruno g less than blast furnace slag.
- the addition amount of the blast furnace slag may be 10 to 50% by weight based on the cement amount similarly to the above pozzolanic substance.
- the titanium oxide used for the surface layer is preferably a powder that has not been subjected to a surface treatment, and it is preferable that the particle size is small, the specific surface area is 5 m 2 Zg or more, more preferably, the specific surface area is 100 m 2.
- Z g ⁇ 300 m 2 Z g titanium oxide Is preferred.
- titanium oxide has a purifying action since it has a purifying action, and an anatase type is more preferable.
- More preferred titanium oxide is such that when the titanium oxide is calcined at 150 to 800 ° C., the weight loss mainly of water is 5 to 20% of the titanium oxide, preferably 8 to 15%.
- the use of certain titanium oxide is preferred because it can be easily mixed with cement.
- titanium oxide is not particularly limited, and titanium monoxide, titanium dioxide, etc. may be used alone or in combination. Further, in place of these titanium oxides, metatitanic acid as an intermediate substance is used. And orthotitanic acid can be used.
- the proportion of titanium oxide used in the surface layer is 5 parts by weight to 50 parts by weight with respect to 100 parts by weight of cement, which varies depending on the type and particle size of titanium oxide.
- the component ratio of the surface layer used in the present invention is less than 5 parts by weight with respect to 100 parts by weight of cement, the titanium oxide powder has poor NO x purification efficiency, and when it exceeds 50 parts by weight, it has slip resistance. Not only deteriorated, but also poor in wear resistance. On the other hand, if the amount is less than 100 parts by weight, the sliding resistance and the abrasion resistance are reduced. The amount of tin powder is reduced and the purification efficiency of NO x is inferior.
- the component ratio of the surface layer is preferably 10 parts by weight to 50 parts by weight, more preferably 20 parts by weight to 50 parts by weight, and 100 parts by weight of cement with respect to 100 parts by weight of cement. 0 parts by weight to 300 parts by weight.
- the coarse aggregates preferably have a maximum size of 20 mm or less. And the like.
- sand is preferable for fine aggregate, and it is better to use glass particles or silica sand with high light transmission as the sand allows sufficient light to penetrate deep from the surface.
- the particle size of the sand is preferably 1.2 to 5 mm.
- the kneaded product used for the surface layer contains a high-performance water reducing agent.
- the high-performance water reducing agent those conventionally used may be used, and examples of the naphthalenesulfonic acid high-condensate include ⁇ -naphthyl sulfonic acid formaldehyde condensate.
- the melamine sulfonic acid high condensate include melamine sulfonic acid formaldehyde condensate.
- modified lignin derivative-based material cresol oil-based material, alkylarylsulfonate polymer, and polycarboxylic acid-based material include, for example, oxycarboxylic acid.
- examples of the fiber used for the surface layer include vinylon fiber, carbon fiber, plastic fiber, and steel fiber, and are preferably plastic fiber and steel fiber, and more preferably steel fiber.
- activated carbon As the adsorbing substance used for the surface layer, activated carbon, zeolite, silica gel powder, magadite, limestone light, and the like, and activated carbon are most preferable in view of the adsorption effect. Zeolite is also preferable because it has been confirmed that the adsorption effect is high.
- the zeolite can be either natural zeolite or artificial zeolite.
- the amount of the adsorbent added is 2 to 30% by weight, preferably 7 to 25% by weight based on the amount of cement. NO x is decomposed and removed by the contained ultraviolet rays.
- NO x is adsorbed by the adsorbing material, and the adsorbed NO x is decomposed and removed by ultraviolet light during the day. If the amount of the adsorbent is less than 5% by weight, the effect of adsorption is insufficient, Incomplete adsorption.
- the weight% may be represented by a ratio to 100 parts by weight.
- a resin emulsion, a re-emulsifying powder resin, an AE agent, and the like can be added to increase the fluidity and adhesiveness of the kneaded material.
- the thickness of the surface layer is 1 to 30 mm, preferably 20 to 150 mm. And more preferably 40 to 80 mm.
- the thickness of the surface layer is 2 to 15 mm, preferably 2 to 10 mm.
- This surface layer can be provided on the entire surface of the asphalt layer or a part thereof.
- the thickness of the surface layer exceeds 300 mm, sunlight hardly permeates and the titanium layer is wasted.
- the thickness thereof is poor durability with purification efficiency of the NO x is deteriorated less than 1 mm.
- the surface of the pavement layer preferably has irregularities, and the irregularities may have any pattern such as a linear shape, a mesh shape, an embossed shape, and the like. This enables strong adhesion between the packaging layer and the surface layer.
- the pavement layer is made of asphalt pavement or concrete pavement, and a surface layer containing cement and titanium oxide is provided thereon.
- the existing asphalt pavement is defined as a part of the existing asphalt pavement, which is obtained by cutting the repaired portion of the surface of the asphalt pavement to reveal a new surface, thereby obtaining the asphalt pavement obtained. Means Therefore, after a new surface is exposed on the existing asphalt equipment, a surface layer containing cement and titanium oxide is provided thereon.
- the concrete overlay is used when the pavement layer is made up of a part of the existing concrete pavement, and the repaired portion of the surface of the existing concrete pavement is cut to reveal a new surface, thereby obtaining the existing concrete pavement. Means pavement.
- a surface layer containing cement and titanium oxide is provided thereon.
- a base layer such as a concrete base layer or a bedrock, and at least one selected from soil, crushed stone, and stone can be used as a base layer below the pavement layer.
- the pavement layer is an asphalt layer
- a concrete base layer or a bedrock is used as the base layer, and at least one selected from soil, crushed stone, and stone can be used as the base layer.
- the pavement layer is a concrete pavement
- a concrete base layer or a bedrock is used as the base layer
- at least one selected from soil, crushed stone, and stone can be used as the base layer.
- the NO X purification pavement structure of the present invention is particularly preferable when it is installed in a place near an exhaust gas source of an automobile, and specifically, it can be installed on a roadway or a sidewalk. Therefore, by installing N ⁇ x purification pavement structures on roadways and sidewalks, it is a feature that NOx can be purified immediately after gas emission, and it can be used with other building materials to be installed on the building wall. In comparison, N ⁇ x can be efficiently purified, and a high NOx purification effect can be obtained.
- the asphalt layer is not deteriorated by the titanium oxide, and since the surface layer contains cement, the durability is improved. Is also superior.
- the asphalt layer is porous asphalt pavement, part of the surface layer penetrates into the porous pores of the asphalt layer during construction, and the surface layer and the asphalt foot are firmly adhered to each other, resulting in excellent durability. Pavement is obtained.
- this asphalt pavement is an existing asphalt pavement, only a part of the asphalt pavement is replaced, so that the construction cost can be shortened.
- the surface of the asphalt layer has four protrusions, the surface layer is sufficiently firmly adhered to the surface layer, so that an excellent durability can be obtained. Further, by using a concrete base layer as the base layer, the durability or stability of the road is good. Further, in a material containing a pozzolanic substance, since the hydrate is filled in the voids, a material having excellent strength can be obtained.
- the surface layer contains an adsorbed substance, NO X and the like are adsorbed at night, and are decomposed by sunlight in the daytime, so that the NO X purification efficiency is excellent.
- a surface layer containing cement and titanium oxide is provided on the concrete pavement, not only the surface has NOx purification performance but also the adhesion between the surface layer and the concrete layer is made of the same material. As a result, a strong connection can be obtained, and a product with excellent durability can be obtained.
- the concrete overlay method is used, so that the surface of the pavement can be easily repaired and the surface of the existing concrete pavement has NOX purification performance. be able to.
- a 4 cm intermediate layer (not shown) and a 45 cm concrete layer 1 were formed on a crushed stone subgrade, and a rubber-coated asphalt emulsion was sprayed thereon as a evening coat, followed by porosity.
- a semi-flexible packaging material 21 composed of a 23% matrix asphalt mixture was provided, and the packaging layer 2 was laid by rolling with a roller.
- a slurry was prepared by mixing and kneading 240 parts by weight of sand, 20 parts by weight of titanium oxide, 80 parts by weight of portland cement and 40 parts by weight of water as a kneaded material for the surface layer.
- This slurry was applied to the surface after the temperature of the base asphalt mixture was lowered to a predetermined temperature, and a surface layer 3 was formed. Some of the slurry penetrated the pores of the porous asphalt.
- the thickness of the surface layer of the pavement structure thus obtained was 8 to 10 mm. With this road pavement, an excellent NO x purification effect was obtained due to the NO x purification effect of the surface layer 3.
- a mixture of 94 parts by weight of the crushed stone for particle size adjustment and 6 parts by weight of asphalt was mixed and heated to prepare a vacuum. This was used to install on the road, and rolled by a mouth-lifter to asphalt pavement. 70 parts by weight of Boltland cement, 15 parts by weight of titanium dioxide, 70 parts by weight of sand, 70 parts by weight of water, and 0.1 part by weight of Mighty 150 (trade name) were mixed to prepare a slurry. . This slurry was sprayed on the asphalt layer, and the road was covered with a smoothing. With this road pavement, an excellent ⁇ ⁇ ⁇ purification effect was obtained due to the N ⁇ x purification effect of surface debris.
- a mixture of 94 parts by weight of the crushed stone for particle size adjustment and 6 parts by weight of asphalt was mixed and heated to prepare a vacuum.
- the above-mentioned ascon is installed as a pavement layer 2 on the crushed crushed stone subgrade 4 laid on the subgrade 5 of the road.
- the titanium dioxide-containing slurry described in Example 2 was sprayed on the obtained asphalt pavement 21, and the road was paved.
- a layer composed of a matrix asphalt mixture having a porosity of 23% was provided and rolled with a roller.
- Hoso Ice Ace [trade name, injection material for semi-flexible pavement manufactured by Mitsubishi Materials Corporation (ultra-fast setting type)] 90 parts by weight, 10 parts by weight of titanium oxide powder and 55 parts by weight of water were added to the slurry.
- a pavement structure in which fly ash or blast furnace slag was added to the composition of the surface layer of the NOx purification asphalt pavement structure of Example 1 was constructed. Pavement structures containing these pozzolanic substances were excellent in strength.
- a pavement structure was prepared by adding activated carbon as an adsorbent to the composition of the surface layer of the asphalt pavement structure for purification of NOx in Example 1. This mounted structure had much higher NO X purification efficiency.
- the concrete paved road shown in Fig. 3 has an intermediate asphalt layer 7 on a crushed stone subgrade 8 and further has an existing concrete paving slab 6 as a pavement layer 2 on which cement and titanium oxide are placed.
- a surface layer 3 is provided. First, a part of the surface of the existing concrete pavement 6 on the concrete pavement road was cut, and then this cut surface was cleaned by shot blast.
- a surface layer 3 was formed on the obtained polished surface by kneading the kneaded material mixed at the compounding amount shown in Table 1 to a thickness of 5 cm using a thin-layer paving finisher. After curing, joints were cut. A test piece was cut from the obtained pavement and tested by the test method described below. Table 1 shows the obtained results.
- a part of the surface of the existing concrete pavement on the concrete paved road was cut, and this cut surface was cleaned by shot blasting.
- the kneaded material obtained by mixing at the compounding amounts shown in Table 1 was spread over the obtained polished surface to a thickness of 7 cm using a thin-layer paving finisher. After curing, joint cutting was performed.
- the surface of the existing asphalt pavement on the asphalt pavement was cleaned with a shot blast.
- the kneaded material mixed at the compounding amount shown in Table 1 was spread over the obtained polished surface to a thickness of 3 cm by using a finisher for adding a thin layer.
- the pavement surface after being completely cured was cut in an area of 10 cm ⁇ 10 cm. After the test piece was polished to a thickness of 1 cm, the test piece was put in a glass container and subjected to a NOx removal performance test.
- Titanium oxide Anatase type with crystal form, specific surface S 250 cmVg
- Water reducing agent high performance liquid agent, Kao Mighty 150
- Coarse aggregate grain 3 ⁇ 45 ⁇ 2 OMI
- the purification pavement structure of the present invention is installed on roadways and sidewalks where NOx is high.
- the concrete overlay method can be applied to the existing pavement layer, and is used for pavement road construction such as surface repair and reinforcement.
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97934759A EP0919667B1 (en) | 1996-08-16 | 1997-08-11 | NOx REMOVING PAVEMENT STRUCTURE |
DE69723450T DE69723450T2 (de) | 1996-08-16 | 1997-08-11 | NOx ENTFERNENDER STRASSENBELAG |
US09/147,539 US6454489B1 (en) | 1996-08-16 | 1997-08-11 | NOx removing pavement structure |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21633796 | 1996-08-16 | ||
JP8/216337 | 1996-08-16 | ||
JP9/108770 | 1997-04-25 | ||
JP10877097 | 1997-04-25 | ||
JP19709697A JP3428381B2 (ja) | 1996-08-16 | 1997-07-23 | NOx浄化舗装構造物 |
JP9/197096 | 1997-07-23 |
Publications (1)
Publication Number | Publication Date |
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WO1998007929A1 true WO1998007929A1 (fr) | 1998-02-26 |
Family
ID=27311313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/002797 WO1998007929A1 (fr) | 1996-08-16 | 1997-08-11 | STRUCTURE DE PAVE SUPPRIMANT NOx |
Country Status (5)
Country | Link |
---|---|
US (1) | US6454489B1 (ja) |
EP (1) | EP0919667B1 (ja) |
JP (1) | JP3428381B2 (ja) |
DE (1) | DE69723450T2 (ja) |
WO (1) | WO1998007929A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
EP0919667A4 (en) | 2001-02-07 |
DE69723450D1 (de) | 2003-08-14 |
US6454489B1 (en) | 2002-09-24 |
JPH116102A (ja) | 1999-01-12 |
DE69723450T2 (de) | 2003-12-24 |
EP0919667A1 (en) | 1999-06-02 |
EP0919667B1 (en) | 2003-07-09 |
JP3428381B2 (ja) | 2003-07-22 |
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