WO2011136395A1 - Procédé pour produire un matériau de pierre artificielle - Google Patents

Procédé pour produire un matériau de pierre artificielle Download PDF

Info

Publication number
WO2011136395A1
WO2011136395A1 PCT/JP2011/060801 JP2011060801W WO2011136395A1 WO 2011136395 A1 WO2011136395 A1 WO 2011136395A1 JP 2011060801 W JP2011060801 W JP 2011060801W WO 2011136395 A1 WO2011136395 A1 WO 2011136395A1
Authority
WO
WIPO (PCT)
Prior art keywords
mass
blast furnace
binder
mud
furnace slag
Prior art date
Application number
PCT/JP2011/060801
Other languages
English (en)
Japanese (ja)
Inventor
高橋　克則
渡辺　圭児
薮田　和哉
本田　秀樹
林　正宏
松本　剛
操 鈴木
靖史 林堂
Original Assignee
Ｊｆｅスチール株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011036555A external-priority patent/JP5712668B2/ja
Application filed by Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Priority to KR1020127029319A priority Critical patent/KR101379095B1/ko
Priority to CN201180021777.0A priority patent/CN102869634B/zh
Publication of WO2011136395A1 publication Critical patent/WO2011136395A1/fr

Links

Images

Classifications

    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08—Slag cements
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/008—Sludge treatment by fixation or solidification
    • 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
    • C04B2111/54—Substitutes for natural stone, artistic materials or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to a method for producing artificial stone by solidifying mud such as clay with a binder.
  • Soft mud represented by dredged soil, is generated with the construction of channel dredging and various civil engineering works. Among them, those useful as civil engineering materials such as sand can be used as they are for the construction of shallow fields and backfilling. However, mud with a high ratio of silt is often in a water-containing state, and since it can hardly be expected to have strength as soil, it often becomes waste.
  • Various techniques have been proposed and implemented for effective use of mud. The most representative one is a technique for improving the characteristics of soil and using it in the same way as high-quality soil. For example, “Stable treatment method for soft ground with lime” by the Japan Lime Association (Kashima Publishing Co., Ltd.) shows various techniques for improving the properties of the ground by adding cement and lime to mud.
  • Patent Document 1 discloses a technique for improving strength by mixing steel slag with clay.
  • the strength of the clay is improved mainly by a pozzolanic reaction between the CaO content of the steel slag and Si, Al, etc. of the clay.
  • Patent Document 2 discloses a technique for performing solidification treatment (improvement of strength) by adding converter slag containing free CaO and blast furnace cement to soft soil.
  • these methods are improvement of characteristics as a soil material, and although the strength of the soil material level is expressed, it is limited to the use as soil.
  • Patent Document 3 discloses a method of obtaining a block material (solidified body) by mixing a solidified material such as cement with clay and solidifying it.
  • the strength of the block material obtained by the method of Patent Document 3 is on average at a 6N / mm 2 approximately, only about 8N / mm 2 at most.
  • strength (9.8 N / mm 2 or more) higher than the semi-hard stone specified in JIS-A-5006: 1995 (split stone) is required.
  • the strength of the block material obtained in Patent Document 3 is the lowest quality soft stone level (less than 9.8 N / mm 2 ).
  • the level of soft stone is considerably higher than the improvement level of soil materials, it is not strong enough to be used for various purposes as an alternative to stone and concrete materials.
  • a large amount of mud having a high silt content (75 ⁇ m or less), which is often seen in soft dredged soil, is used, it is easily expected that securing strength becomes more difficult.
  • the object of the present invention is to solve the above-mentioned problems of the prior art, use a large amount of mud such as dredged soil, and have a strength higher than that of semi-hard stone, especially a safety factor (+3 N / mm 2 ).
  • An object of the present invention is to provide a production method capable of stably producing an artificial stone material that sufficiently satisfies the characteristics of quasi-hard stone even when considered.
  • Strength index (mass of ground granulated blast furnace slag + mass of slaked lime + 2 ⁇ mass of ordinary Portland cement + 0.35 ⁇ mass of fly ash) / water as an index representing the degree of strength development of hydrated solidified steel slag Mass is used.
  • kneading is performed when the strength index exceeds 2 in order to develop a stable strength. Since it was thought that securing strength was important even when using clay as in the present invention, the ratio of water and binder contained in the clay was set and kneaded so as to satisfy the strength index according to the above. Carried out.
  • the present inventors adjust the water content by further adding water to the clay originally holding water, while reducing the ratio of the binder and water to some extent.
  • the conditions for kneading were examined. As a result, depending on the conditions, the strength may be exhibited in some cases, but it was also found that sufficient strength may not be obtained even with a relatively close blending.
  • mud soil typified by dredged soil may inhibit the pozzolanic reaction due to surface adsorption of the soil particles, and when trying to use a large amount of dredged soil, It was found that the inhibition of pozzolanic reaction by surface adsorption had a great influence on the strength development.
  • FIGS. 1 (a) and 1 (b) show examples of changes in the concentration of Ca and pH when a calcium hydroxide solution is permeated through dredged soil collected from the Tamagawa River and dredged soil collected from Tokyo Bay.
  • 2 g of clay was filled in a permeation tube with filter paper on the bottom, and a calcium hydroxide aqueous solution adjusted to pH 12 was added dropwise at 1 mL / min to recover the leached solution.
  • the Ca concentration and OH ⁇ concentration were measured. According to FIG.
  • Ca 2+ and OH ⁇ concentration (pH) of the solution change greatly only by permeating the clay.
  • Ca 2+ and OH ⁇ are main components of a reaction product (CaO—SiO 2 —H 2 O gel) at the time of hydration solidification represented by cement. It is considered that Ca 2+ and OH ⁇ are adsorbed on the soil particles of the clay and the concentration is lowered, so that the solidification is inhibited.
  • Such an adsorption action of Ca 2+ and OH ⁇ is peculiar when mud such as dredged soil is used, and was not conscious at all in a normal steel slag hydrated solid body containing no mud as a material. .
  • the mass ratio of the binder to the soil particles in the mud is set to a predetermined value or more, and the water / binder ratio is a conventional technology for producing hydrated solidified steel slag. It was found that a solidified body (stone) having a stable strength can be obtained by using a large amount of mud such as dredged soil by optimizing it in a different range.
  • A) Contains 40 volume% or more of mud.
  • the binder comprises at least one selected from blast furnace slag fine powder, blast furnace slag fine powder to which an alkali stimulant is added, blast furnace cement, and ordinary Portland cement.
  • the amount of the binder is 1.7 times or more by mass ratio with respect to the soil particles (solid content) in the mud and satisfies the following formula.
  • the binder contains 80 to 95% by mass of blast furnace slag fine powder, and the balance is one or more selected from ordinary Portland cement, lime powder, slaked lime, and blast furnace cement.
  • D Containing 40 volume% or more of mud with respect to 100 volume% of mixed materials.
  • the binder comprises at least one selected from blast furnace slag fine powder, blast furnace slag fine powder to which an alkali stimulant is added, blast furnace cement, and ordinary Portland cement, and fly ash.
  • the amount of the binder is 1.7 times or more by mass ratio with respect to the soil particles (solid content) in the mud and satisfies the following formula. (Mass of blast furnace slag fine powder + Mass of lime powder + Mass of slaked lime + Mass of ordinary Portland cement ⁇ 2 + Mass of fly ash ⁇ 0.35) / (Mass of water in mixed material) ⁇ 1.5
  • the binder contains 70 to 85% by mass of blast furnace slag fine powder, and fly ash is contained in an amount of 10 to 30% by mass relative to the mass of the blast furnace slag fine powder.
  • a method for producing an artificial stone wherein the balance is at least one selected from ordinary Portland cement, lime powder, slaked lime, and blast furnace cement.
  • the aggregate is steel slag.
  • [7] The method for producing an artificial stone material according to [6], wherein the blending amount of the steelmaking slag per unit volume in the mixed material is 700 kg / m 3 or more.
  • [8] The method for producing an artificial stone material according to any one of the above [1] to [7], wherein the mud contains 65% by volume or more of particles having a particle size of 0.075 mm or less.
  • the mud is dredged material generated by dredging work, and the dredged material is temporarily stored in the dredging yard and stored in the dredging yard.
  • a method for producing an artificial stone material comprising producing an artificial stone material using mud clay.
  • an artificial stone material having a strength equal to or higher than that of semi-hard stone can be stably produced by using a large amount of mud such as clay.
  • FIG. 1 is a graph showing an example of changes in solution Ca concentration and pH when a calcium hydroxide solution is permeated through the clay.
  • Fig. 2 shows the mass ratio of the binder compounded in the mixed material and the soil particles (solid content) in the mud [binding material / soil particles in the mud] and the strength of the solidified body (uniaxial compressive strength after 28 days of curing) It is a graph which shows the relationship.
  • FIG. 4 is a graph showing the relationship between the curing period and the strength of the solidified body (uniaxial compressive strength).
  • FIG. 5 is a diagram for explaining an embodiment of the present invention using a dredging site.
  • the present invention is a method for producing an artificial stone material by kneading a mixed material containing mud and a binder, more preferably an aggregate, and hydrating and hardening (solidifying the binder by a hydration reaction). Satisfies the following conditions (a) to (c).
  • (A) Contains 40 volume% or more of mud.
  • the binder comprises at least one selected from blast furnace slag fine powder, blast furnace slag fine powder to which an alkali stimulant is added, blast furnace cement, and ordinary Portland cement.
  • the amount of the binder is 1.7 times or more by mass ratio with respect to the soil particles (solid content) in the mud and satisfies the following formula. (Mass of blast furnace slag fine powder + Mass of lime powder + Mass of slaked lime + Mass of ordinary Portland cement ⁇ 2) / (Mass of water in mixed material) ⁇ 2.0
  • fly ash can be further blended as the binder, and in this case, the mixed material satisfies the following conditions (d) to (f).
  • D) Contains 40% by volume or more of mud.
  • the binder comprises at least one selected from blast furnace slag fine powder, blast furnace slag fine powder to which an alkali stimulant is added, blast furnace cement, and ordinary Portland cement, and fly ash.
  • the amount of the binder is 1.7 times or more by mass ratio with respect to the soil particles (solid content) in the mud and satisfies the following formula. (Mass of blast furnace slag fine powder + Mass of lime powder + Mass of slaked lime + Mass of ordinary Portland cement ⁇ 2 + Mass of fly ash ⁇ 0.35) / (Mass of water in mixed material) ⁇ 1.5
  • the mud used in the present invention is typically dredged, but other examples include mud generated from excavation work and construction sludge.
  • the muddy soil generally refers to a material that cannot be piled up and exhibits fluidity that prevents people from walking on it.
  • the cone index defined by JIS-A-1228: 2009 (cone index test method for compacted soil) is 200 N / mm 2 or less.
  • the production method according to the present invention is particularly useful because mud soil typified by dredged material has a higher ion adsorption effect as the silt content is larger, and it becomes difficult to obtain a solidified body having an appropriate strength with the conventional technology.
  • the present invention is particularly useful when a mud soil containing 65 volume% or more of soil particles (silt content) having a particle size of 0.075 mm or less is targeted.
  • soil of mud refers to soil particles having a particle size of 0.075 mm or less.
  • the purpose of the present invention is to effectively utilize mud represented by dredged soil, and therefore it is preferable that the proportion of mud in the mixed material is as large as possible. Therefore, the proportion of mud in the mixed material (originally mud The ratio of the water content contained in is 40% by volume or more.
  • the upper limit of the proportion of mud is not particularly limited, but if the proportion of dredged soil is 60% by volume or less, the relative amount of steelmaking slag becomes an appropriate amount, and the specific gravity of the solidified body greatly increases to 2.0. None fall below. If the specific gravity is not significantly lower than 2.0, it has utility as a stone substitute. Therefore, the proportion of mud in the mixed material is desirably 60% by volume or less.
  • the binder examples include blast furnace slag fine powder, blast furnace slag fine powder to which an alkali stimulant is added, blast furnace cement, and ordinary Portland cement, and one or more of these can be used. From the viewpoint of reducing the environmental load without using natural materials as much as possible, and from the viewpoint of securing the strength of the artificial stone material (hereinafter sometimes referred to as “solidified body”) and the manufacturing cost, What added the alkali stimulant to the blast furnace slag fine powder is desirable.
  • an alkali stimulator together with the blast furnace slag fine powder as a binder an alkaline environment can be created, and thereby the hydraulic properties of the blast furnace slag fine powder can be exhibited. That is, the hydration reaction of the blast furnace slag fine powder can be promoted, and the strength of the solidified body can be ensured.
  • the alkali stimulating agent for example, one or more kinds of lime powder, slaked lime, ordinary Portland cement, blast furnace cement and the like can be used. In this case, it is preferable that 80 to 95% by mass of blast furnace slag fine powder is contained, and the balance is one or more selected from lime powder, slaked lime, ordinary Portland cement, and blast furnace cement.
  • an alkali stimulant is used together with the blast furnace slag fine powder as a binder, if the proportion of the blast furnace slag fine powder is 80% by mass or more, an excess alkali component does not remain in the solidified body. For this reason, when using a solidified body in the sea etc., the load of the alkali with respect to seawater environment is small. It is also economically advantageous.
  • the ratio of the amount of binder in the mixed material to water is (mass of blast furnace slag fine powder + mass of lime powder + mass of slaked lime + mass of ordinary Portland cement ⁇ 2) / (mass of water in the mixed material) ) ⁇ 2.0.
  • FIG. 2 it can be seen that in order to ensure the strength of the solidified body, a certain amount or more of binding material is necessary with respect to the amount of mud soil particles.
  • the strength of the solidified body there is no essential problem as long as it can clear the required strength level of quasi-hard stone of 9.8 N / mm 2 or more.
  • it is necessary for ensuring the quality that the target strength has a strength margin of about 3 N / mm 2 as in the case of ready-mixed concrete.
  • the uniaxial compressive strength after curing for 28 days can be about 15 N / mm 2 with a strength margin.
  • the amount of the binder in the mixed material is 1.7 times or more by mass ratio with respect to the soil particles (solid content) in the mud.
  • the mass ratio is 2.2 times or more because stable strength can be expected even if the clay is uneven.
  • the strength index according to the strength index used in the steel slag hydrated solidified body that is, (mass of blast furnace slag fine powder + mass of lime powder + slaked lime Mass + normal Portland cement mass x 2) / (mass of water in the mixed material).
  • blast furnace cement is a mixture of blast furnace slag fine powder and ordinary Portland cement
  • the mass corresponding to the mixing ratio of the blast furnace slag fine powder of the blast furnace cement is referred to as “mass of blast furnace slag fine powder”
  • ordinary Portland cement of blast furnace cement is used. The above formula is applied with the mass corresponding to the mixing ratio of the particles as “mass of ordinary Portland cement”.
  • Table 1 shows the results of examining the relationship between the strength index of the mixed material kneaded under sufficient water conditions and the strength of the obtained solidified body (uniaxial compressive strength after 28-day curing). According to this, although the strength increases as the strength index increases (that is, the ratio of the binder to water increases), it reaches a peak at about 1.95, and the kneading failure occurs under a condition exceeding 2.3.
  • the amount of the binder is less than 2.0 (mass of blast furnace slag fine powder + mass of lime powder + mass of slaked lime + mass of ordinary Portland cement ⁇ 2) / (mass of water in the mixed material). , Preferably 1.95 or less.
  • fly ash can be further blended.
  • the binder fly ash can be further blended.
  • the clay is mainly composed of SiO 2 , it can be stabilized by a hydration reaction with excess alkali.
  • the mineral phase that constitutes the solid particles of dredged soil varies depending on dredged areas and occurrence history, so the reactivity may not be stable.
  • the fly ash is blended as a part of the binder, that is, selected from blast furnace slag fine powder, blast furnace slag fine powder added with an alkali stimulant, blast furnace cement, and ordinary Portland cement. It is desirable to use fly ash in combination with more than seeds.
  • fly ash Since the composition of fly ash is mainly composed of amorphous SiO 2 and Al 2 O 3 , it can be expected that a pozzolanic reaction will occur more quickly than the crystalline material when an excessive alkali content is generated. . However, when fly ash is added excessively, the amount of Ca in the binder becomes too small, and the stability of the reaction, which is the original role, may be impaired. From this point of view, when fly ash is blended, it is a ratio to the total of one or more selected from blast furnace slag fine powder, blast furnace slag fine powder added with an alkali stimulant, blast furnace cement, and ordinary Portland cement. It is preferable that the upper limit is about 40% by mass.
  • the binder added to the mixed material is particularly preferably a blast furnace slag fine powder added with an alkali stimulant.
  • the blast furnace slag fine powder is contained in an amount of 70 to 85% by mass and the fly ash is contained in an amount of 10 to 30% by mass with respect to the mass of the blast furnace slag fine powder.
  • the balance is preferably at least one selected from ordinary Portland cement, lime powder, slaked lime, and blast furnace cement.
  • the reason why the blast furnace slag fine powder is blended in the above range is basically the same as the reason described above. However, since fly ash is used in combination, the blending ratio of the blast furnace slag fine powder is relatively reduced.
  • the blending amount of fly ash is preferably about 30% by mass with respect to the mass of the blast furnace slag fine powder.
  • the lower limit is preferably about 10% by mass with respect to the mass of the blast furnace slag fine powder.
  • the ratio of water and binder in the mixed material is a strength index according to the strength index used in the steel slag hydrated solidified body, that is, It was found that (mass of blast furnace slag fine powder + mass of lime powder + mass of slaked lime + mass of ordinary Portland cement ⁇ 2 + mass of fly ash ⁇ 0.35) / (mass of water in the mixed material). Since blast furnace cement is a mixture of blast furnace slag fine powder and ordinary Portland cement, the mass corresponding to the mixing ratio of the blast furnace slag fine powder of the blast furnace cement is referred to as “mass of blast furnace slag fine powder”, and ordinary Portland cement of blast furnace cement is used. The above formula is applied with the mass corresponding to the mixing ratio of the particles as “mass of ordinary Portland cement”.
  • clay with a silt content of 92% by volume was used as mud
  • blast furnace slag fine powder was mainly used as a binder
  • slaked lime and ordinary Portland cement were used as alkali stimulants
  • fly ash was further blended.
  • the strength index when the strength index is up to 1.5, the slump value is 3 cm or more and an appropriate kneading state is obtained, but when the strength index exceeds 1.5, the slump value is greatly reduced. In addition, the tendency to start kneading failure was also confirmed visually. For this reason, if the strength index exceeds 1.5, the strength itself reaches the peak, but if the strength index further increases, the strength decreases. Therefore, when fly ash is blended as a part of the binder, the strength index is desirably 1.5 or less.
  • the amount of water in the mixed material is determined by the moisture content, volume ratio and strength index of the clay. Generally, the volume ratio in the mixed material is about 30 to 50%.
  • Aggregates can be blended into the mixed material in the same manner as concrete and the like, and it is desirable to blend aggregates in terms of characteristics such as volume stability.
  • As the aggregate natural sand and natural crushed stone can be used in the same manner as ordinary concrete. However, from the viewpoint of obtaining a high strength material containing as little natural resources as possible, it is desirable to use steel slag. Moreover, since steelmaking slag is heavier (larger specific gravity) than natural crushed stone, the weight (high specific gravity) of a solidified body can be ensured by using this as an aggregate.
  • the steelmaking slag examples include hot metal pretreatment slag (dephosphorization slag, desiliconization slag, desulfurization slag, etc.), converter decarburization slag, electric furnace slag, and the like, and one or more of these can be used.
  • the steelmaking slag preferably has a maximum particle size of 25 mm or less. About 15 to 50% of the aggregate is appropriate as the volume ratio in the mixed material.
  • the amount of steelmaking slag in a mixed material is 700 kg / m ⁇ 3 > or more from a viewpoint of the weight ensuring as a solidified body, and volume stability.
  • mud, a binder, and more preferably an aggregate are blended, a mixed material to which water is added as necessary is kneaded, and the kneaded material is solidified by a hydration reaction of the binder to produce artificial material. Get stone. Remove mud such as dredged material with a sieve if necessary.
  • a normal fresh concrete kneading facility may be used, but it may be carried out in a yard such as outdoors using a heavy machine for civil engineering work such as an excavator.
  • the kneaded material may be poured into an appropriate mold and solidified and cured (hydration hardening), or it may be cast in a layer on the yard such as outdoors to solidify and cure (hydration hardening). You may let them. In particular, when a large amount of stone is produced, it is preferable to place the yard in layers.
  • the results of examining the relationship between the curing period and the strength of the solidified body are shown in FIG.
  • clay with a silt content of 60% by volume was used as mud
  • blast furnace slag fine powder was mainly used as a binder
  • slaked lime and ordinary Portland cement were used as alkali stimulants.
  • the ratio of the amount of binder in the mixed material to water is (mass of blast furnace slag fine powder + mass of lime powder + mass of slaked lime + mass of ordinary Portland cement ⁇ 2) / (mass of water in the mixed material) ) ⁇ 2.0.
  • the curing period is a period until a target compressive strength is obtained. Generally, about 7 days or more is appropriate as shown in FIG.
  • the obtained stone is crushed to an appropriate size as necessary.
  • This crushing treatment may be performed using a crusher, and when the kneaded material is placed in layers in the yard as described above, the solidified body of the yard is roughly crushed with a breaker, and then crushed. You may crush with a machine.
  • the solidified body (lumps) subjected to the crushing process is classified with a sieve to obtain a chunk of a predetermined size. For example, when used as a submerged dike material, a lump having a size of about 150 to 500 mm is obtained.
  • the stone material has a uniaxial compressive strength after curing on the 28th of 9.8 N / mm 2 (the hardness of semi-hard stone specified in JIS-A-5006: 1995) or more, preferably 15 N / mm 2 or more.
  • a stone having such strength can be easily manufactured.
  • solidified bodies manufactured using steelmaking slag as aggregate especially solidified manufactured using steelmaking slag as aggregate and blast furnace slag fine powder and alkaline stimulant (eg ordinary Portland cement) as binder.
  • the body can ensure sufficient strength and weight (high specific gravity).
  • the dredged soil generated by dredging works varies in moisture content depending on dredging location.
  • marine products such as seaweed and oysters
  • the dredging of seawater due to dredging work may affect the marine products. Rather, there is a limit on the construction period (ie seasonality).
  • the dredged soil generated by dredging work is temporarily stored in the dredging yard, and a solidified body is produced using the dredged soil stored in the dredging yard. Is preferred.
  • FIG. 5 is an explanatory view showing an embodiment of the present invention using a dredging site.
  • the dredged soil generated during dredging work is temporarily stored in the dredging yard.
  • the form and structure of the dredging yard is arbitrary, for example, it may be a thing that piles earth and sand, slag, etc. in a yard to form an annular bank and stores dredged mud inside.
  • the dredged soil generated during dredging work is transported to the dredging yard and stored, regardless of its water content and other properties.
  • the above-mentioned binder, more preferably aggregate, is mixed into the clay supplied from this dredging site, and a mixed material to which water is added as necessary is kneaded. To obtain artificial stone.
  • Example 1 Table 2 and blended materials in compounding conditions shown in Table 3 (mixed for 5 minutes at 0.75 m 3 kneading plant, discharged after a predetermined time has elapsed) kneading, diameter 100 mm ⁇ a kneaded product of this mixed material
  • a solid body artificial stone material
  • the dredged soil used was 90% by volume of silt collected from the bottom of Tokyo Bay. Water was adjusted as necessary by adding water.
  • converter slag particle size 0-25 mm
  • Example 2 By mixing the materials with the blending conditions shown in Table 4 (mixed for 5 minutes at 0.75 m 3 kneading plant, discharged after a predetermined time has elapsed) kneading, the kneaded product a diameter 100 mm ⁇ height 200mm of this mixed material A solid body (artificial stone) was manufactured by molding into a mold of the size. The dredged soil used was 92% by volume of silt collected from the bottom of the Seto Inland Sea, and water was adjusted as necessary by adding water. Moreover, converter slag (particle size 0-25 mm) was used as the steelmaking slag, which is an aggregate. The uniaxial compression strength of the solidified body after curing for 28 days was measured by a compression test (JIS-A-1108: 2006). The results are also shown in Table 4.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Treatment Of Sludge (AREA)

Abstract

La présente invention concerne un procédé pour produire de façon stable un matériau de pierre artificielle ayant une résistance égale ou supérieure à une pierre semi-dure en utilisant de grandes quantités de boue telle qu'un résidu de dragage. Lors de la production du matériau de pierre artificielle par durcissement par hydratation d'un matériau mixte contenant une boue et un liant, Le matériau mixte satisfait aux conditions (a) à (c) suivantes. (a) Le matériau mixte contient 40 pour cent en volume ou plus de boue pour 100 pour cent en volume du matériau mixte. (b) Le liant est composé d'au moins un composant choisi dans un groupe constitué de micropoudre de laitier de haut fourneau, micropoudre de laitier de haut fourneau avec ajout de stimulant alcalin, ciment de laitier de haut fourneau Portland, et ciment Portland ordinaire. (c) La quantité du liant a un rapport en masse de 1,7 fois ou plus par rapport à des particules de terre (teneur en matières solides) dans la boue, et satisfait à la condition (masse de micropoudre de laitier de haut fourneau + masse de poudre de chaux + masse de chaux hydratée + masse de ciment Portland ordinaire ×2)/(masse d'eau dans le matériau mixte) < 2,0, et lorsque des cendres volantes sont mélangées davantage en tant que partie du liant, satisfait à la condition (masse de la micropoudre de laitier de haut fourneau + masse de poudre de chaux + masse de chaux hydratée + masse de ciment Portland ordinaire ×2 + masse de cendres volantes ×0,35)/(masse d'eau dans le matériau mixte) ≤ 1,5.
PCT/JP2011/060801 2010-04-30 2011-04-28 Procédé pour produire un matériau de pierre artificielle WO2011136395A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020127029319A KR101379095B1 (ko) 2010-04-30 2011-04-28 인공 석재의 제조 방법
CN201180021777.0A CN102869634B (zh) 2010-04-30 2011-04-28 人造石材的制造方法

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2010-104844 2010-04-30
JP2010104844 2010-04-30
JP2010123994 2010-05-31
JP2010-123994 2010-05-31
JP2010294458 2010-12-29
JP2010-294458 2010-12-29
JP2011036555A JP5712668B2 (ja) 2010-04-30 2011-02-23 固化体の製造方法
JP2011-036555 2011-02-23

Publications (1)

Publication Number Publication Date
WO2011136395A1 true WO2011136395A1 (fr) 2011-11-03

Family

ID=44861676

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/060801 WO2011136395A1 (fr) 2010-04-30 2011-04-28 Procédé pour produire un matériau de pierre artificielle

Country Status (1)

Country Link
WO (1) WO2011136395A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105272108A (zh) * 2015-10-13 2016-01-27 浙江大学 模块化建筑地基土壤快速化学固化剂及其应用
JP2018172245A (ja) * 2017-03-31 2018-11-08 Ｊｆｅスチール株式会社 固化体の製造方法
CN115110390A (zh) * 2022-07-13 2022-09-27 中铁第四勘察设计院集团有限公司 一种适用于市政道路的局部开挖沟槽快速回填的施工方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000063167A (ja) * 1998-08-11 2000-02-29 Yoshikazu Fuji 土壌を原料とするブロック化物
JP2001191095A (ja) * 2000-01-14 2001-07-17 Higo Kimuragumi Kk 生コンスラッジの処理方法及びその処理物並びに生コンスラッジを用いた建築用２次製品の製造方法及び建築用２次製品
JP2008182898A (ja) * 2007-01-26 2008-08-14 Fujiki:Kk 凌渫土ブロック施工法
JP2008263928A (ja) * 2007-04-25 2008-11-06 Japan Science & Technology Agency 磯根設置用浚渫土ブロック
JP2011093750A (ja) * 2009-10-30 2011-05-12 Nippon Steel Corp 泥土含有固化体及びその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000063167A (ja) * 1998-08-11 2000-02-29 Yoshikazu Fuji 土壌を原料とするブロック化物
JP2001191095A (ja) * 2000-01-14 2001-07-17 Higo Kimuragumi Kk 生コンスラッジの処理方法及びその処理物並びに生コンスラッジを用いた建築用２次製品の製造方法及び建築用２次製品
JP2008182898A (ja) * 2007-01-26 2008-08-14 Fujiki:Kk 凌渫土ブロック施工法
JP2008263928A (ja) * 2007-04-25 2008-11-06 Japan Science & Technology Agency 磯根設置用浚渫土ブロック
JP2011093750A (ja) * 2009-10-30 2011-05-12 Nippon Steel Corp 泥土含有固化体及びその製造方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105272108A (zh) * 2015-10-13 2016-01-27 浙江大学 模块化建筑地基土壤快速化学固化剂及其应用
JP2018172245A (ja) * 2017-03-31 2018-11-08 Ｊｆｅスチール株式会社 固化体の製造方法
CN115110390A (zh) * 2022-07-13 2022-09-27 中铁第四勘察设计院集团有限公司 一种适用于市政道路的局部开挖沟槽快速回填的施工方法
CN115110390B (zh) * 2022-07-13 2023-08-29 中铁第四勘察设计院集团有限公司 一种适用于市政道路的局部开挖沟槽快速回填的施工方法

Similar Documents

Publication Publication Date Title
JP5853399B2 (ja) 人工石材の製造方法
JP5896057B2 (ja) 人工石材の製造方法
JP5326995B2 (ja) 泥土含有固化体及びその製造方法
JP5047745B2 (ja) 地盤改良材
KR101379095B1 (ko) 인공 석재의 제조 방법
JP6662046B2 (ja) 泥土含有固化体の製造方法
JP5907246B2 (ja) 固化体の製造方法
JP2011093752A (ja) 泥土含有固化体の製造方法
JP6020677B2 (ja) 人工石材
WO2011136395A1 (fr) Procédé pour produire un matériau de pierre artificielle
JP5696569B2 (ja) 鉄鋼スラグを用いたサンドドレーン材料及びサンドコンパクションパイル用材料
JP6682920B2 (ja) 人工石の製造方法
JP6642506B2 (ja) 固化体の製造方法
JP5002368B2 (ja) 高炉水砕スラグを使用した水中施工用裏込め・裏埋め材及びその製造方法
JP7465052B2 (ja) 高含水比泥土の改質土の製造方法
JP2004292244A (ja) コンクリート状カラー固化体及びその製造方法
WO2009058011A1 (fr) Procédé de préparation d&#39;une structure dans une masse d&#39;eau
JP2015059350A (ja) 地盤の液状化対策工法
JP4991489B2 (ja) 埋め立て用あるいは、捨石、裏込め用鉄鋼スラグ水和固化体製人工石材
JP2011093751A (ja) 泥土含有固化体及びその製造方法
JP2005314156A (ja) 造粒物およびその製造方法
KR102141776B1 (ko) 해양 콘크리트 구조물용 고비중 콘크리트 조성물
JP4150135B2 (ja) ノロ低減剤及びそれを用いた遠心力成形製品の製造方法
JP2004278045A (ja) 改良土及びその製造方法
JP2015055118A (ja) 地盤の液状化対策工法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201180021777.0

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11775168

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2980/KOLNP/2012

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 12012502013

Country of ref document: PH

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20127029319

Country of ref document: KR

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 11775168

Country of ref document: EP

Kind code of ref document: A1