CN102869634B - Method for producing artificial stone material - Google Patents
Method for producing artificial stone material Download PDFInfo
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- CN102869634B CN102869634B CN201180021777.0A CN201180021777A CN102869634B CN 102869634 B CN102869634 B CN 102869634B CN 201180021777 A CN201180021777 A CN 201180021777A CN 102869634 B CN102869634 B CN 102869634B
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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
- 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
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/30—Mixed waste; Waste of undefined composition
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
- C04B7/19—Portland cements
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Disclosed is a method for stably producing an artificial stone material having a strength equal to or higher than a semi-hard stone using large amounts of mud such as dredged spoil. When producing the artificial stone material by hydration hardening of a mixed material containing mud and a binder, the mixed material satisfies the following conditions (a)-(c). (a) The mixed material contains 40 percent by volume or more of mud per 100 percent by volume of the mixed material. (b) The binder is composed of at least one component selected from a group consisting of blast furnace slag micropowder, blast furnace slag micropowder added with an alkaline stimulant, portland blast furnace slag cement, and ordinary portland cement. (c) The amount of the binder has a mass ratio of 1.7 times or more relative to soil particles (solid content) in the mud, and satisfies (mass of the blast furnace slag micropowder + mass of lime powder + mass of hydrated lime + mass of ordinary portland cement *2)/(mass of water in the mixed material)<2.0, and when further blending fly ash as a part of the binder, satisfies (mass of the blast furnace slag micropowder + mass of lime powder + mass of hydrated lime + mass of ordinary portland cement *2 + mass of fly ash *0.35)/(mass of water in the mixed material)<=1.5.
Description
Technical field
The present invention relates to the method making the clay solidifying manufacture artificial stone-like materials such as dredging markets with matrix material.
Background technology
With dredging markets be representative soft earth can along with air route dredging and various civil construction produce.Wherein, can directly can be used in shallow leaf manufacture and backfill etc. as engineering materials as sand material.But the earth most cases that flour sand divides ratio high is saturation state, in addition, also almost can not expect that it has the intensity as soil, therefore, becomes waste mostly.
In order to effectively utilize earth, proposing in the past and implementing various technology.It is most representative is improve as soil characteristics, carries out the technology utilized in the same manner as the soil of fine quality.Such as, in " adopting the stabilizing treatment way of the soft foundation of lime " (meeting is published on deer island) of Japanese lime association, disclose and add cement and lime in earth, improve the various technology of foundation property.
In addition, Patent Document 1 discloses and mix the technology that iron steel slag carries out the improvement of intensity in dredging markets.In the art, the strength modified of dredging markets is carried out in the pozzolanic reaction mainly through the CaO composition of iron steel slag and Si, Al etc. of dredging markets.In addition, Patent Document 2 discloses the technology of adding in soft soil and being cured process (improved strength) containing the converter slag of free CaO and blast-furnace cement.
But these methods are that the characteristic of soil material is improved, though show the intensity of soil material level, are still limited to the purposes as soil on earth.
In contrast, to Patent Document 3 discloses in dredging markets the solidify material such as mixed cement, make it to solidify the method obtaining block material (cured article).
Patent documentation 1: JP 2009-121167 publication
Patent documentation 2: JP 2006-231208 publication
Patent documentation 3: JP 2008-182898 publication
Summary of the invention
Invent problem to be solved
But, the intensity average out to 6N/mm of the block material obtained by the method for patent documentation 3
2left and right, maximum only 8N/mm
2degree.At this, to utilize as the substitute of stone material and concrete material, the intensity (9.8N/mm of more than the accurate admant of regulation in JIS-A-5006:1995 (rubble) must be had
2above).The intensity of the block material obtained in patent documentation 3 is that the soft rock level of lowest quality is (less than 9.8N/mm
2).Although this soft rock level is that degree is quite high compared with the improvement level of soil material, stone material and concrete material be replaced for various purposes, and intensity is still not.In addition, easily imagine: when being used in the earth that the common flour sand of soft dredging markets divides the ratio of (less than 75 μm) high in a large number, be more difficult to guarantee intensity.
Therefore, the object of the invention is to, solve technical task as above, there is provided a kind of and can stablize the manufacture method manufacturing artificial stone-like material, described artificial stone-like material uses the earth such as dredging markets in a large number, and has the intensity of more than accurate admant, even if especially consider safety coefficient (+3N/mm
2) also fully can meet the characteristic of accurate admant.
The method of dealing with problems
At present, there are known with the manufacturing technology (such as, " brief guide of iron steel slag hydration and sclerosis thing technology ", (wealth) littoral Technical Research Center) of the iron steel slag iron steel slag hydration and sclerosis thing that is main raw material.In this technology, aggregate uses steel slag processed, and matrix material uses blast-furnace cinder micro-powder end and alkali stimulant, manufactures hydration and sclerosis thing.The present inventors, based on the manufacturing technology of this iron steel slag hydration and sclerosis thing, implement the manufacture experiment replacing the cured article that iron steel slag hydration and sclerosis thing material obtains with dredging markets.
As the index of the intensity expression power degree of expression iron steel slag hydration and sclerosis thing, the quality of working strength index=(quality of quality+0.35 × flying dust of quality+2 × ordinary Portland cement of the quality+white lime at blast-furnace cinder micro-powder end)/water.In the manufacture of iron steel slag hydration and sclerosis thing, in order to show stable intensity, stir when this intensity index is more than 2.It has been generally acknowledged that, even if when using dredging markets as in the present invention, intensity is guaranteed also very important, and therefore, in order to meet above-mentioned intensity index, in setting dredging markets, the ratio of contained water and matrix material is implemented to stir.But the mobility of stirring thing sharply reduces in this experiment, its result, regard as and produce sand holes when pouring into a mould, hydration and sclerosis thing becomes fragile, and intensity can not fully manifest.Namely, think by mixing dredging markets, intensity is caused to be difficult to display, therefore, although regard as, the ratio of matrix material and water is maintained in existing know-how (manufacturing technology of iron steel slag hydration and sclerosis thing), but cannot carry out suitable stirring cast, be artificial stone-like material and the block material of raw material according to being difficult to manufacture with dredging markets in existing acquainted manufacturing technology.
So, the present inventor is for improving the mobility of stirring thing, following condition is studied, described condition is: add water further to carry out moisture adjustment to the dredging markets natively possessing moisture, the ratio of matrix material and water is carried out the reduction of certain degree, the condition stirred can have been carried out simultaneously.Its result shows, although also have the situation showing intensity due to the difference of condition, and, even also there is formula comparatively close therewith also not show the situation of sufficient intensity.For its reason, the result of further research is regarded as: be that the earth of representative is sometimes because the surface adsorption etc. of grogs hinders pozzolanic reaction with dredging markets, when utilizing a large amount of dredging markets, the surface adsorption of grogs to manifest intensity the obstruction of pozzolanic reaction and creates very large impact.
Research shows, although the different and degree difference to some extent of the kind of soil, dredging markets has absorption Ca
2 +and OH
-effect.Fig. 1 (a), (b) represent make from rub more river gather dredging markets and from Tokyo Bay gather dredging markets through aqua calcis time, the example of the change of solution C a concentration and pH.In this experiment, fill dredging markets 2g to being covered with soaking in pipe of filter paper in bottom surface, make from top to be adjusted to pH12 calcium hydroxide aqueous solution divide with 1mL/ and drip, reclaim measured in solution its Ca concentration and OH of leaching
-concentration.According to Fig. 1, assert the Ca concentration of solution and OH-concentration (pH) only there is noticeable change through during dredging markets.Ca
2+and OH
-resultant of reaction (CaO-SiO when taking cement as the hydration and sclerosis of representative
2-H
2o gel) main composition composition.Ca
2+and OH
-by the native particle absorption of dredging markets, concentration reduces, and therefore, thinks that this hinders solidification.This Ca
2+and OH
-adsorption be distinctive when using the earth such as dredging markets, do not recognize completely containing in the common iron steel slag hydration and sclerosis thing of earth in the material.Found that of research is repeated for addressing this is that, the mass ratio of grogs in matrix material and earth is set as more than prescribed value, and the ratio of water and matrix material is carried out optimization in the scope different with the manufacturing technology of existing iron steel slag hydration and sclerosis thing, thus, the earth such as dredging markets can be used in a large number, obtain the cured article (stone material) with stable intensity.
The present invention is based on knowledge as above, main points are as follows.
(1) an artificial stone-like material's manufacture method, the method comprises: make mixing material generation hydration and hardening containing earth and matrix material to manufacture artificial stone-like material, wherein, mixing material meets following condition (a) ~ (c).
(a) relative to 100 volume % in mixing material, the earth containing 40 more than volume %.
(b) matrix material comprise be selected from blast-furnace cinder micro-powder end, with the addition of the blast-furnace cinder micro-powder of alkali stimulant end, blast-furnace cement (blast furnace セ メ Application ト, slag cement), in ordinary Portland cement (common Port Le ト ラ Application De セ メ Application ト, ordinary Portland cement) more than a kind.
C () matrix material amount is more than 1.7 times by quality ratio relative to grogs (solids component) in earth, and meet following formula:
(quality × 2 of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material) < 2.0
(2) as described in artificial stone-like material's manufacture method of (1), wherein, matrix material contains the blast-furnace cinder micro-powder end of 80 ~ 95 quality %, and remainder is more than a kind of being selected from ordinary Portland cement, lime powder, white lime, blast-furnace cement.
(3) an artificial stone-like material's manufacture method, the method comprises: make mixing material generation hydration and hardening containing earth and matrix material to manufacture artificial stone-like material, wherein, mixing material meets following condition (d) ~ (f).
(d) relative to the mixing material of 100 volume %, the earth containing 40 more than volume %;
(e) matrix material comprise be selected from blast-furnace cinder micro-powder end, more than a kind and the flying dust that with the addition of in the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement;
F () matrix material amount is more than 1.7 times relative to grogs (solids component) in earth with mass ratio, and meet following formula:
(quality × 0.35 of the quality × 2+ flying dust of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material)≤1.5.
(4) as described in the manufacture method of artificial stone-like material of (3), wherein, matrix material contains the blast-furnace cinder micro-powder end of 70 ~ 85 quality %, and, relative to the quality at blast-furnace cinder micro-powder end, flying dust containing 10 ~ 30 quality % ratios, remainder is more than a kind of being selected from ordinary Portland cement, lime powder, white lime, blast-furnace cement.
(5) as described in the manufacture method of artificial stone-like material according to any one of (1) ~ (4), wherein, mixing material is also containing aggregate (aggregate, aggregate).
(6) as described in the manufacture method of artificial stone-like material as described in (5), wherein, aggregate is steel slag processed.
(7) as described in the manufacture method of artificial stone-like material as described in (6), wherein, in the mixing material of per unit volume, the combined amount of steel slag processed is 700kg/m
3above.
(8) as described in the manufacture method of artificial stone-like material according to any one of (1) ~ (7), wherein, it is the particle of below 0.075mm that earth contains the above particle diameter of 65 volume %.
(9) as described in the manufacture method of artificial stone-like material according to any one of (1) ~ (8), wherein, earth is the dredging markets produced in dredging engineering, this dredging markets is temporarily stored in dredging markets storeroom, is used in the dredging markets manufacture artificial stone-like material that this dredging markets storeroom stores.
Invention effect
According to the present invention, the earth such as dredging markets can be used in a large number to stablize the artificial stone-like material manufacturing and have the intensity of more than accurate admant.
Accompanying drawing explanation
When the aqua calcis of graphical presentation shown in Fig. 1 is through dredging markets, the example of solution C a concentration and pH change;
Relation between the mass ratio [grogs in matrix material/earth] of grogs (solids component) in the matrix material that graphical presentation shown in Fig. 2 mixes at mixing material and earth and cured article intensity (uniaxial compressive strength after maintenance in 28 days);
The mixing of graphical presentation shown in Fig. 3 flying dust is as the intensity index B/ water (=[quality × 0.35 of the quality × 2+ flying dust of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end]/[quality of the water in mixing material]) of the mixing material of a part for matrix material and the relation of caving between angle value;
Fig. 4 is the chart representing relation between curing time and cured article intensity (uniaxial compressive strength);
Fig. 5 illustrates the figure that make use of an embodiment of the invention of dredging markets storeroom.
Embodiment
The present invention relates to the manufacture method of a kind of artificial stone-like material, the method comprises, to containing earth and matrix material, mixing material preferably further containing aggregate stirs, along with hydration and hardening (solidification that water and reaction due to matrix material cause) manufactures artificial stone-like material, mixing material meets following condition (a) ~ (c).
(a) relative to the mixing material of 100 volume %, the earth containing 40 more than volume %.
(b) matrix material by being selected from blast-furnace cinder micro-powder end, more than a kind of with the addition of in the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement forms.
C () matrix material amount relative to grogs (solids component) in earth more than 1.7 times by quality ratio, and meets following formula.
(quality × 2 of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material) < 2.0
In addition, as matrix material, can also mix flying dust, in this case, mixing material meets following condition (d) ~ (f).
(d) relative to the mixing material of 100 volume %, containing earth 40 more than volume %.
(e) matrix material by being selected from blast-furnace cinder micro-powder end, with the addition of in the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement more than a kind and flying dust is formed.
F () matrix material amount with mass ratio more than 1.7 times, and meets following formula relative to grogs (solids component) in earth.
(quality × 0.35 of the quality × 2+ flying dust of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material)≤1.5
Earth used in the present invention take dredging markets as the earth of representative, but in addition, such as, also can enumerate produced by excavation works mud, build mud etc.At this, so-called earth, generally speaking refers to and can not pile up in heaps, and have the earth of the mobility that people can not walk thereon.As its intensity roughly, the bevel index specified with JIS-A-1228:2009 (the bevel index test method of the soil of compacting) is for 200N/mm
2below.
Be that the flour sand of the earth of representative divides the adsorption effect of (シ Le ト divides, silt) its ions more larger with dredging markets, be more difficult to the cured article obtaining suitable intensity in the prior art, therefore, manufacture method of the present invention is particularly useful.Specifically, when can say the earth of the present invention at grogs (flour sand divides) using containing above below the particle diameter 0.075mm of 65 volume % as object, particularly useful.
Need illustrate time, in the following description, earth refer to " flour sand divides " below particle diameter 0.075mm grogs.
The object of the invention is effectively utilization take dredging markets as the earth of representative, therefore, the ratio of the earth in preferable blendstocks is many as much as possible, therefore, the earth ratio (comprising the ratio of the moisture in earth contained by script) in mixing material is set as 40 more than volume %.In addition, there is no particular limitation for the upper limit of earth ratio, but when the ratio of dredging markets is 60 below volume %, steel amount of slag processed reaches appropriate comparatively speaking, and the proportion of cured article can not decline to a great extent 2.0.As long as proportion does not decline to a great extent 2.0, just there is the availability as building stones substitute.Therefore, the earth ratio in mixing material wishes to be 60 below volume %.
As matrix material, blast-furnace cinder micro-powder end can be enumerated, with the addition of the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement, more than a kind in them can be used.
In addition, from not using natural resource material to alleviate the viewpoint of carrying capacity of environment as far as possible, and from guaranteeing that artificial stone-like material is (following, be sometimes referred to as " cured article ") intensity and manufacturing cost viewpoint consider, as matrix material, in blast-furnace cinder micro-powder end, preferably add the material that alkali stimulant obtains.Make to be used as matrix material by blast-furnace cinder micro-powder end together with alkali stimulant, alkali environment can be generated, thereby, it is possible to play the hydraulicity at blast-furnace cinder micro-powder end.That is, the hydration reaction at blast-furnace cinder micro-powder end can be promoted, guarantee the intensity of cured article.
As alkali stimulant, more than a kind in such as lime powder, white lime, ordinary Portland cement, blast-furnace cement etc. can be used.In this situation, the blast-furnace cinder micro-powder end preferably containing 80 ~ 95 quality %, remainder is more than a kind of being selected from lime powder, white lime, ordinary Portland cement, blast-furnace cement.When using blast-furnace cinder micro-powder end and alkali stimulant as matrix material, if the ratio at blast-furnace cinder micro-powder end is more than 80 quality %, then remaining alkali composition can not remain in cured article.Therefore, when marine grade uses cured article, the load that alkali produces briny environment is little.In addition, also favourable in economy.On the other hand, even if the ratio at blast-furnace cinder micro-powder end is more than 95 quality %, stirring solidification also can be carried out.But, if at below 95 quality %, then easily make it stable dispersion, because of the alkali inhibition of dredging markets, the effect of stimulant is diminished, therefore, the effect of adding blast-furnace cinder micro-powder end is high, do not need to use plurality of raw materials, can not facility load be produced, therefore, at economic aspect, there is usability.
As shown in Figure 1, the earth such as dredging markets has Ca
2+and OH
-adsorption, therefore, think: in the amount of its grogs likely to Ca
2+and OH
-adsorptive capacity produce large impact, and, cement occurred by gelation solidification when, formed gel network be very important.Therefore, changing the balance of dredging markets and matrix material, meanwhile have studied the factor relevant to manifesting intensity.Its result, learns that the ratio of grogs contained in matrix material amount and dredging markets has great impact for intensity.
Fig. 2 represents the result that the relation between mass ratio to grogs (solids component) in the matrix material be mixed in mixing material and earth [grogs in matrix material/earth] and cured article intensity (uniaxial compressive strength after maintenance in 28 days) is studied.In this experiment, use flour sand to be divided into the dredging markets of 90 volume % as earth, using the material at blast-furnace cinder micro-powder end as matrix material, use white lime, ordinary Portland cement as alkali stimulant.In addition, in mixing material, the ratio of matrix material amount and water is set as (quality × 2 of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material) < 2.0.
According to Fig. 2, the intensity of cured article be guaranteed, then need a certain amount of above matrix material relative to the amount of grogs of earth.As the intensity of cured article, as long as exceed necessary strength level and the 9.8N/mm of accurate admant
2just substantially no problem above.But, when consider the uneven of dredging markets and manufacture on uneven, in order to ensure quality, be necessary as ready mixed concrete, make target strength have 3N/mm
2the intensity of degree is rich.Specifically, if known [grogs in matrix material/earth]>=1.7, then the uniaxial compressive strength after maintenance in 28 days can be controlled at the 15N/mm with intensity affluence
2left and right.Therefore, the matrix material amount in mixing material is set to more than 1.7 times by quality ratio relative to grogs (solids component) in earth.In addition, if its mass ratio is more than 2.2 times, even if then dredging markets exists uneven, also can expect to show stable intensity, therefore, more preferably.
On the other hand, when merely increasing the amount of matrix material, there will be the state of matrix material relative to water excess, intensity easily occurring on the contrary and reduces and fill bad.For the ratio of the water in mixing material and matrix material, can adjust according to following index, described index is the intensity index that intensity index when using with iron steel slag hydration and sclerosis thing form is benchmark, that is, (quality × 2 of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material).In addition, blast-furnace cement is the mixture of blast-furnace cinder micro-powder end and ordinary Portland cement, therefore, the quality corresponding with the ratio of mixture at blast-furnace cinder micro-powder end in blast-furnace cement is set to " quality at blast-furnace cinder micro-powder end ", the quality corresponding with the ratio of mixture of ordinary Portland cement in blast-furnace cement is set to " quality of ordinary Portland cement ", and substitutes into above-mentioned formula.
When iron steel slag hydration and sclerosis thing, the mixture ratio of design matrix material and water makes intensity index reach more than 1.5, usually adopts the condition of intensity more than 2.0 (with reference to " brief guide of iron steel slag hydration and sclerosis thing technology ").In contrast, distinguishing when using dredging markets, needing to adopt diverse condition.Table 1 represents: to the cumulative water-oil ratio at dredging markets be 220% (cumulative water-oil ratio=([amount of moisture (quality %) of dredging markets]/[the solids component amount (quality %) of dredging markets]) × 100), the volume fraction of dredging markets is the result that the relation between the intensity index of the mixing material that stirs under condition comparatively fully of moisture of 50%, the intensity (uniaxial compressive strength after maintenance in 28 days) of cured article that obtains is studied.Thus, although intensity is higher time intensity index higher (that is, matrix material increases relative to the ratio of water), just reach the highest to about 1.95, just there will be under more than the condition of 2.3 stir bad.According to above result, matrix material amount is set as, and (quality × 2 of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material) is less than 2.0, is preferably set to less than 1.95.
[table 1]
| Intensity index | Uniaxial compressive strength (N/mm 2) |
| 1.4 | 18.7 |
| 1.65 | 20.9 |
| 1.95 | 22.8 |
| 2.1 | 21.0 |
| 2.3 | Stir bad |
As matrix material, flying dust can also be mixed.Such as, when mixing steel slag processed as aggregate as aftermentioned in mixing material, owing to containing a large amount of Ca in steel slag processed, therefore, alkali composition becomes superfluous sometimes.Dredging markets is with SiO
2for principal constituent, therefore, can hydration reaction be carried out with the alkali composition of surplus and make it stabilization.But the mineral facies forming the solids of dredging markets are different because dredging area and the difference of production process, therefore, reactivity instability sometimes.In this case, preferred mixing flying dust is as a part for matrix material, that is, be selected from blast-furnace cinder micro-powder end, with the addition of in the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement while more than a kind using, combinationally use flying dust.
Fly ash composition with amorphous SiO
2, Al
2o
3centered by, therefore, when creating superfluous alkali composition, compared with the material of crystalline, be expected to cause pozzolanic reaction fast.But if excessively mix flying dust, then the Ca quantitative change in matrix material obtains very few, the stability that namely original effect reacts probably also can be damaged.Consider from this viewpoint, when mixing flying dust, relative to being selected from blast-furnace cinder micro-powder end, the total amount of more than a kind that with the addition of in the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement, the upper limit preferably about the roughly 40 quality % of the ratio of flying dust.
In addition, as above-mentioned, as the matrix material be blended in mixing material, the material formed particularly preferably in adding alkali stimulant in blast-furnace cinder micro-powder end.When combinationally using this matrix material and flying dust, blast-furnace cinder micro-powder end preferably containing 70 ~ 85 quality %, and, relative to the quality at blast-furnace cinder micro-powder end, flying dust containing 10 ~ 30 quality % ratios, remainder is more than a kind of being selected from ordinary Portland cement, lime powder, white lime, blast-furnace cement.The reason mixing blast-furnace cinder micro-powder end in above-mentioned scope is substantially identical with previous reasons.But owing to having combinationally used flying dust, therefore, the blending ratio at blast-furnace cinder micro-powder end tails off relatively.In addition, as previously noted, when excessively mixing flying dust, the Ca quantitative change in matrix material obtains very few, probably also can damage the stability that namely original effect reacts.Therefore, the upper limit of preferred flying dust combined amount counts about 30 quality % with the ratio of the quality relative to blast-furnace cinder micro-powder end.On the other hand, obtain the effect of mixing flying dust, rolling off the production line of flying dust combined amount preferably counts about 10 quality % with the ratio of the quality relative to blast-furnace cinder micro-powder end.
In addition we know, when mixing the part of flying dust as matrix material, in mixing material, the ratio of water and matrix material can adjust according to following index, described index is the intensity index that intensity index when using with the form of iron steel slag hydration and sclerosis thing is benchmark, i.e. (quality × 0.35 of the quality × 2+ flying dust of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder the end)/quality of water (in the mixing material).In addition, blast-furnace cement is the mixture of blast-furnace cinder micro-powder end and ordinary Portland cement, therefore, the quality corresponding with the ratio of mixture at blast-furnace cinder micro-powder end in blast-furnace cement is set to " quality at blast-furnace cinder micro-powder end ", the quality corresponding with the ratio of mixture of ordinary Portland cement in blast-furnace cement is set to " quality of ordinary Portland cement ", and substitutes into above-mentioned formula.
As previously alluded, when unmixed flying dust is as matrix material, the intensity of cured article reaches the highest when intensity index 1.95,2.3 time, occur that stirring is bad, but, after mixing flying dust, in mixing material, the amount of powder increases further, therefore, more easily occurs that stirring is bad.To this, Fig. 3 represents: under the condition to the flying dust that the ratio being 25 quality % in the quality relative to blast-furnace cinder micro-powder end is mixed with, and the relation of the angle value of caving in of above-mentioned intensity index and mixing material carries out the result investigated.In this experiment, use flour sand to be divided into the dredging markets of 92 volume % as earth, using the material at blast-furnace cinder micro-powder end as matrix material, use white lime, ordinary Portland cement as alkali stimulant, remix flying dust.
According to Fig. 3, when intensity index is less than 1.5, angle value of can guaranteeing to cave in is more than 3cm, can obtain suitable whipped state, but when intensity index is more than 1.5, angle value of caving in significantly reduces, even if naked eyes also can confirm to start to have to stir bad tendency.Therefore, when intensity index is more than 1.5, although can intensity be obtained, reached the highest, when intensity index becomes large further, then produced intensity and reduce.Therefore, when mixing the part of flying dust as matrix material, preferred intensity index is less than 1.5.
Amount of moisture in mixing material is determined according to the cumulative water-oil ratio of dredging markets, volume fraction and intensity index.Generally speaking, the amount of moisture in mixing material counts about 30 ~ 50% with the volume fraction in mixing material.
Same with concrete etc., can in mixing material combined aggregate, consider from characteristic surfaces such as volume stabilities, preferred combined aggregate.Same with common concrete, natural sand, natural rubble can be used as aggregate, but, not containing natural resource as far as possible and the material obtaining high strength from the viewpoint of obtaining, preferably using steel slag processed.In addition, with natural rubble ratio, steel slag processed heavier (than great), therefore, by this being used as aggregate, can guarantee the weight (high specific gravity) of cured article.
As steel slag processed, molten iron pre-treatment slag (dephosphorization slag, desiliconization slag, desulfurization slag etc.), converter decarburization slag, electric furnace slag etc. can be enumerated, more than a kind in them can be used.The preferred maximum particle diameter of steel slag processed is the slag of the granularity of below 25mm.
It is suitable that aggregate counts about 15 ~ 50% with the volume fraction in mixing material.In addition, when using steel slag processed as aggregate, from the viewpoint of weight, the volume stability guaranteed as cured article, the steel amount of slag processed in preferable blendstocks is 700Kg/m
3above.
In manufacture method of the present invention, mixing earth, matrix material, more preferably combined aggregate, with the addition of water as required, stir the mixing material obtained, by the hydration reaction of matrix material, this stirring thing is solidified, thus obtain artificial stone-like material.
The earth such as dredging markets are as required by removing foreign matters such as sieves.As the whipping appts of mixing material, such as common fresh concrete whipping device can be used, but, scraper bowl etc. also can be used to carry out in ward out of doors etc. for the hoisting machinery of civil engineering work.
Stirring thing is solidified, such as, can be poured in suitable mold frame be cured, maintenance (hydration and hardening), also can wait in ward out of doors and pour into stratiform, be cured, maintenance (hydration and hardening).Especially, when a large amount of manufacture stone material, preferably in ward, stratiform is poured into.
Fig. 4 to represent between investigation preserving period and the result of relation between cured article intensity (uniaxial compressive strength after maintenance in 28 days).In this experiment, flour sand is used to be divided into the dredging markets of 60 volume % as earth, using the material at blast-furnace cinder micro-powder end as matrix material, and, employ white lime, ordinary Portland cement as alkali stimulant.In addition, in mixing material, the ratio of matrix material amount and water is set to (quality × 2 of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material) < 2.0.Be until during obtaining targeted compression intensity between preserving period, generally speaking, more than as shown in Figure 4 about 7 days be advisable.
The stone material obtained as required break process becomes suitable size.This break process also can use crusher to carry out, and in addition, as described above, when stirring thing being poured in ward stratiform, by the shredder assembly coarse breaking of the cured article of ward, then, can carry out break process with crusher.In addition, usually with sieve, the cured article (block) of break process is carried out classification, obtain the block of the size of regulation.Such as, when using as submerged breakwater material etc., obtain the block of about 150 ~ 500mm size.
The preferred stone material uniaxial compressive strength had after maintenance in 28 days is 9.8N/mm
2more than (hardness of the accurate admant specified in JIS-A-5006:1995), preferably there is 15N/mm
2above intensity, manufacturing method according to the invention, easily can manufacture the stone material of this intensity.Especially, use steel slag processed as the cured article manufactured by aggregate, especially use steel slag processed as aggregate and use blast-furnace cinder micro-powder end and alkali stimulant (such as, ordinary Portland cement) enough intensity and weight (high specific gravity) can be guaranteed as the cured article manufactured by matrix material.
Below, the method manufacturing artificial stone-like material is described, in the method, the dredging markets produced in dredging engineering is temporarily stored in dredging markets storeroom, this dredging markets being stored in dredging markets storeroom is used as earth, thus manufacture artificial stone-like material.
The dredging markets produced in dredging engineering is different in moisture ratio because of differences such as dredging places.In addition, when carrying out carrying out near dredging engineering aquatic products thing (sea sedge, oyster etc.) cultivation etc., the seawater dirt that dredging engineering causes likely can have an impact to aquatic products thing, therefore, dredging engineering is not can carry out the whole year, and engineering is limited (that is, having seasonality) period to some extent.In this condition, when implementing of the present invention, preferably the dredging markets produced in dredging engineering being temporarily stored in dredging markets storeroom, using the dredging markets being stored in this dredging markets storeroom to manufacture cured article.Thus, following effect can be obtained: even if when (i) causes the cumulative water-oil ratio of dredging markets different due to differences such as dredging places, by being temporarily stored in dredging markets storeroom, the cumulative water-oil ratio equalization of dredging markets can be made; (ii) even restricted to engineering period of dredging, can not take in the whole year period of dredging markets, by being temporarily stored in dredging markets storeroom, stably to supply dredging markets in cured article manufacturing engineering; (iii) by dredging markets is stored in dredging markets storeroom, the evaluation of cumulative water-oil ratio, management and adjustment etc. can easily be carried out.
Fig. 5 is the explanatory view representing an embodiment of the invention that make use of dredging markets storeroom.The dredging markets produced in dredging engineering is temporarily stored in dredging markets storeroom.The form of dredging markets storeroom and structure are arbitrary, such as, can make the dykes and dams of ring-type, store dredging markets within it at ward cumulose soil sand and slag etc.The dredging markets produced in dredging engineering, regardless of moisture ratio and other proterties, is all transported to dredging markets storeroom as storage mud.Add above-mentioned matrix material to the dredging markets supplied from this dredging markets storeroom, more preferably combined aggregate, adds water as required, stirs the mixing material obtained, and by the hydration reaction of matrix material, this stirring thing is solidified and obtains artificial stone-like material.
Embodiment
[embodiment 1]
Under the mixing condition shown in table 2 and table 3, mixing material carries out stirring (using 0.75m
3whipping device carry out 5 minutes mixing, discharging after the specified time), the stirring thing of this mixing material is solidified in the die for molding of the size of diameter 100mm × height 200mm, manufacture cured article (artificial stone-like material).Dredging markets uses the flour sand taked from the bottom in Tokyo Bay to be divided into the dredging markets of 90 volume %, adds water as required and carries out moisture adjustment.In addition, as aggregate i.e. steel slag processed, use converter slag (particle diameter 0 ~ 25mm).The uniaxial compressive strength of the cured article after maintenance in 28 days is determined by compression testing (JIS-A-1108:2006).Table 2 and table 3 represent its result in the lump.
According to table 2 and table 3, consider safety coefficient (+3N/mm even if obtain in example of the present invention
2) also fully meet the cured article (stone material) of the strength of stability of accurate admant characteristic.In contrast, in a comparative example, although intensity reaches 9.8N/mm
2above, higher with patent documentation 3 phase specific tenacity, but, the cured article of intensity enough when considering above-mentioned safety coefficient can not be obtained.
[embodiment 2]
Under mixing condition shown in table 4, mixing material carries out stirring (using 0.75m
3whipping device mix 5 minutes, discharge after the specified time), the stirring thing of this mixing material is solidified in the die for molding of the size of diameter 100mm × height 200mm, manufacture cured article (artificial stone-like material).Dredging markets uses the flour sand taked from the bottom of Seto Island Sea to be divided into the dredging markets of 92 volume %, adds water as required and carries out moisture adjustment.In addition, as aggregate i.e. steel slag processed, use converter slag (particle diameter 0 ~ 25mm).The uniaxial compressive strength of the cured article after maintenance in 28 days is determined by compression testing (JIS-A-1108:2006).Table 4 represents its result in the lump.
According to table 4, consider safety coefficient (+3N/mm even if obtain in example of the present invention
2) also fully meet the cured article (stone material) of the strength of stability of accurate admant characteristic.In contrast, in a comparative example, although intensity reaches 9.8N/mm
2above, higher with patent documentation 3 phase specific tenacity, but, the cured article of intensity enough when considering above-mentioned safety coefficient can not be obtained.
Claims (19)
1. an artificial stone-like material's manufacture method, the method makes mixing material generation hydration and hardening containing earth and matrix material to manufacture the method for artificial stone-like material, and wherein, mixing material meets following condition (a) ~ (c),
(a) relative to the mixing material of 100 volume %, the earth containing 40 more than volume %;
(b) matrix material comprise be selected from blast-furnace cinder micro-powder end, more than a kind of with the addition of in the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement, described alkali stimulant is lime powder and/or white lime, and described blast-furnace cement is the mixture of blast-furnace cinder micro-powder end and ordinary Portland cement;
C () matrix material amount is more than 1.7 times by quality ratio relative to grogs in earth, the quality of described grogs with solid component meter, and meets following formula:
(quality × 2 of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder the end)/quality of water (in the mixing material) < 2.0.
2. the manufacture method of artificial stone-like material as claimed in claim 1, wherein, matrix material contains the blast-furnace cinder micro-powder end of 80 ~ 95 quality %, and remainder is more than a kind of being selected from ordinary Portland cement, lime powder, white lime, blast-furnace cement.
3. an artificial stone-like material's manufacture method, the method makes mixing material generation hydration and hardening containing earth and matrix material to manufacture the method for artificial stone-like material, and wherein, mixing material meets following condition (d) ~ (f),
(d) relative to the mixing material of 100 volume %, the earth containing 40 more than volume %;
(e) matrix material comprise be selected from blast-furnace cinder micro-powder end, more than a kind and the flying dust that with the addition of in the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement, described alkali stimulant is lime powder and/or white lime, described blast-furnace cement is the mixture of blast-furnace cinder micro-powder end and ordinary Portland cement, and described flying dust is selected from blast-furnace cinder micro-powder end relative to comprising, the total amount of more than a kind that with the addition of in the blast-furnace cinder micro-powder end of alkali stimulant, blast-furnace cement, ordinary Portland cement is below 40 quality %;
F () matrix material amount is more than 1.7 times by quality ratio relative to grogs in earth, the quality of described grogs with solid component meter, and meets following formula:
(quality × 0.35 of the quality × 2+ flying dust of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end)/(quality of the water in mixing material)≤1.5.
4. the manufacture method of artificial stone-like material as claimed in claim 3, wherein, matrix material contains the blast-furnace cinder micro-powder end of 70 ~ 85 quality %, and, relative to the quality at blast-furnace cinder micro-powder end, flying dust containing 10 ~ 30 quality % ratios, remainder is more than a kind of being selected from ordinary Portland cement, lime powder, white lime, blast-furnace cement.
5. the manufacture method of artificial stone-like material as claimed in claim 1, wherein, mixing material is also containing aggregate.
6. the manufacture method of artificial stone-like material as claimed in claim 2, wherein, mixing material is also containing aggregate.
7. the manufacture method of artificial stone-like material as claimed in claim 3, wherein, mixing material is also containing aggregate.
8. the manufacture method of artificial stone-like material as claimed in claim 4, wherein, mixing material is also containing aggregate.
9. the manufacture method of the artificial stone-like material according to any one of claim 5 ~ 8, wherein, aggregate is steel slag processed.
10. the manufacture method of artificial stone-like material as claimed in claim 9, wherein, in the mixing material of per unit volume, the combined amount of steel slag processed is 700kg/m
3above.
The manufacture method of 11. artificial stone-like materials according to any one of claim 1 ~ 8, wherein, it is the particle of below 0.075mm that earth contains the above particle diameter of 65 volume %.
The manufacture method of 12. artificial stone-like materials as claimed in claim 9, wherein, it is the particle of below 0.075mm that earth contains the above particle diameter of 65 volume %.
The manufacture method of 13. artificial stone-like materials as claimed in claim 10, wherein, it is the particle of below 0.075mm that earth contains the above particle diameter of 65 volume %.
The manufacture method of 14. artificial stone-like materials according to any one of claim 1 ~ 8, wherein, earth is the dredging markets produced in dredging engineering, and this dredging markets is temporarily stored in dredging markets storeroom, is used in the dredging markets manufacture artificial stone-like material that this dredging markets storeroom stores.
The manufacture method of 15. artificial stone-like materials as claimed in claim 9, wherein, earth is the dredging markets produced in dredging engineering, and this dredging markets is temporarily stored in dredging markets storeroom, is used in the dredging markets manufacture artificial stone-like material that this dredging markets storeroom stores.
The manufacture method of 16. artificial stone-like materials as claimed in claim 10, wherein, earth is the dredging markets produced in dredging engineering, and this dredging markets is temporarily stored in dredging markets storeroom, is used in the dredging markets manufacture artificial stone-like material that this dredging markets storeroom stores.
The manufacture method of 17. artificial stone-like materials as claimed in claim 11, wherein, earth is the dredging markets produced in dredging engineering, and this dredging markets is temporarily stored in dredging markets storeroom, is used in the dredging markets manufacture artificial stone-like material that this dredging markets storeroom stores.
The manufacture method of 18. artificial stone-like materials as claimed in claim 12, wherein, earth is the dredging markets produced in dredging engineering, and this dredging markets is temporarily stored in dredging markets storeroom, is used in the dredging markets manufacture artificial stone-like material that this dredging markets storeroom stores.
The manufacture method of 19. artificial stone-like materials as claimed in claim 13, wherein, earth is the dredging markets produced in dredging engineering, and this dredging markets is temporarily stored in dredging markets storeroom, is used in the dredging markets manufacture artificial stone-like material that this dredging markets storeroom stores.
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| JP2010294458 | 2010-12-29 | ||
| JP2010-294458 | 2010-12-29 | ||
| JP2011-036555 | 2011-02-23 | ||
| JP2011036555A JP5712668B2 (en) | 2010-04-30 | 2011-02-23 | Manufacturing method of solidified body |
| PCT/JP2011/060801 WO2011136395A1 (en) | 2010-04-30 | 2011-04-28 | Method for producing artificial stone material |
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| KR102074862B1 (en) | 2019-10-02 | 2020-03-02 | (주)디엠 | Jointing device for artificial stones |
| KR102099770B1 (en) | 2019-10-02 | 2020-04-10 | (주)디엠 | Jointing device for artificial stones |
| CN115108766A (en) * | 2022-07-13 | 2022-09-27 | 国发环保新材料(江门)有限公司 | Artificial stone manufactured by using construction waste and fly ash of power plant and process |
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| CN1526680A (en) * | 2003-09-22 | 2004-09-08 | 济南大学 | Floor tile made of oil field sludge and its production process |
| CN1843983A (en) * | 2006-04-27 | 2006-10-11 | 国家海洋局南海海洋工程勘察与环境研究院 | Curing processing method of ocean dredged mud |
| CN101220590A (en) * | 2008-01-04 | 2008-07-16 | 东南大学 | Sullage solidifying method |
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| JP3968898B2 (en) | 1998-11-08 | 2007-08-29 | Ｊｆｅスチール株式会社 | Artificial stone mainly composed of slag and method for producing the same |
| JP5224692B2 (en) | 2007-01-26 | 2013-07-03 | 株式会社冨士機 | Dredging block construction method |
| JP2008263928A (en) | 2007-04-25 | 2008-11-06 | Japan Science & Technology Agency | Dredged soil block for installing beach bedrock |
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| CN1526680A (en) * | 2003-09-22 | 2004-09-08 | 济南大学 | Floor tile made of oil field sludge and its production process |
| CN1843983A (en) * | 2006-04-27 | 2006-10-11 | 国家海洋局南海海洋工程勘察与环境研究院 | Curing processing method of ocean dredged mud |
| CN101220590A (en) * | 2008-01-04 | 2008-07-16 | 东南大学 | Sullage solidifying method |
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