CN102869634A - Method for producing artificial stone material - Google Patents
Method for producing artificial stone material Download PDFInfo
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- CN102869634A CN102869634A CN2011800217770A CN201180021777A CN102869634A CN 102869634 A CN102869634 A CN 102869634A CN 2011800217770 A CN2011800217770 A CN 2011800217770A CN 201180021777 A CN201180021777 A CN 201180021777A CN 102869634 A CN102869634 A CN 102869634A
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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
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- 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
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- 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)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (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 make dredging soil wait clay solidifying manufacturing artificial stone-like material's method with matrix material.
Background technology
Can produce along with air route dredging and various civil construction as the soft earth of representative to dredge soil.Wherein, that works can directly be used in shallow leaf manufacturing and backfill etc. as engineering materials such as sand material.But it is saturation state that flour sand divides the high earth most cases of ratio, in addition, can not expect almost that also it has the intensity as soil, therefore, becomes waste mostly.
In order effectively to utilize earth, proposed in the past and implemented various technology.It is most representative to be to improve as soil characteristics, the technology of similarly utilizing with the soil of fine quality.For example, in " adopting the stabilizing treatment way of the soft foundation of lime " (meeting published on the deer island) of Japanese lime association, disclose interpolation cement and lime in the earth, improved the various technology of foundation property.
In addition, in patent documentation 1, disclose to dredging the technology that mixing iron steel slag carries out the improvement of intensity in the soil.In this technology, mainly dredge the strength modified of soil by the CaO composition of iron steel slag with the pozzolanic reaction of Si, the Al etc. of dredging soil.In addition, in patent documentation 2, disclose and added the converter slag of free CaO and the technology that blast-furnace cement is cured processing (improved strength) of containing in the soft soil.
But these methods are that the characteristic of soil material is improved, though show the intensity of soil material level, still are limited on earth the purposes as soil.
Relative with it, the solidify material such as mixed cement in the dredging soil is disclosed in patent documentation 3, make it to solidify the method that obtains piece material (cured article).
Patent documentation 1: JP 2009-121167 communique
Patent documentation 2: JP 2006-231208 communique
Patent documentation 3: JP 2008-182898 communique
Summary of the invention
Invent problem to be solved
But, the intensity average out to 6N/mm of the piece material that the method for usefulness patent documentation 3 obtains
2About, maximum is 8N/mm only
2Degree.At this, utilize as the substitute of stone material and concrete material, the above intensity (9.8N/mm of accurate admant of regulation among the JIS-A-5006:1995 (rubble) must be arranged
2More than).The intensity of the piece material that obtains in the patent documentation 3 is soft rock level (the not enough 9.8N/mm of lowest quality
2).Although it is that degree is quite high that this soft rock level is compared with the improvement level of soil material,, replace stone material and concrete material to be used for various purposes, intensity or inadequate.In addition, easy imagination: in the situation of the earth that the ratio that a large amount of uses divide (below the 75 μ m) at the native common flour sand of soft dredging is high, more be difficult to guarantee intensity.
Therefore, the object of the invention is to, solve aforesaid technical task, provide a kind of and can stablize the manufacture method of making the artificial stone-like material, described artificial stone-like material uses dredging soil to wait earth in a large number, and has the above intensity of accurate admant, even especially consider safety coefficient (+3N/mm
2) also can fully satisfy the characteristic of accurate admant.
The method of dealing with problems
At present, the known manufacturing technology (for example, " brief guide of iron steel slag hydration and sclerosis thing technology ", (wealth) littoral Technical Research Center) that iron steel slag hydration and sclerosis thing take iron steel slag as main raw material is arranged.In this technology, aggregate uses steel slag processed, and matrix material uses blast-furnace cinder micro-powder end and alkali stimulant, makes the hydration and sclerosis thing.The present inventors are take the manufacturing technology of this iron steel slag hydration and sclerosis thing as the basis, have implemented to replace with dredging soil the manufacturing of the cured article that iron steel slag hydration and sclerosis thing material obtains and have tested.
As the index of the intensity expression power degree that represents iron steel slag hydration and sclerosis thing, the quality of working strength index=(quality of the quality of the quality of the quality+white lime at blast-furnace cinder micro-powder end+2 * ordinary Portland cement+0.35 * flying dust)/water.In the manufacturing of iron steel slag hydration and sclerosis thing, in order to show stable intensity, surpass at 2 o'clock at this intensity index and stir.It has been generally acknowledged that even use as in the present invention in the situation of dredging soil, intensity is guaranteed also very important, therefore, in order to satisfy above-mentioned intensity index, set the ratio of water contained in the dredging soil and matrix material and implement to stir.But, in this test, stirring the mobile of thing and sharply reduce, its result regards as when cast and produces sand holes, and the hydration and sclerosis thing becomes fragile, and intensity can not fully manifest.Namely, think by mixing dredging soil, cause intensity to be difficult to display, therefore, although regard as the ratio of matrix material and water is kept on the existing know-how (manufacturing technology of iron steel slag hydration and sclerosis thing), but can't carry out suitable stirring cast, according to now being difficult to make to dredge artificial stone-like material and the piece material that soil is raw material in the acquainted manufacturing technology.
So, the present inventor is for improving the flowability that stirs thing, following condition is studied, described condition is: the dredging soil of originally just possessing moisture is further added water carry out the moisture adjustment, the ratio of matrix material and water has been carried out the reduction of certain degree, the condition that can stir simultaneously.Its result shows, although because the difference of condition also has the situation of the intensity of showing,, even also there is the prescription that comparatively approaches therewith also not show the situation of sufficient intensity.For its reason, further the result of research regards as: take dredge soil as the earth of representative sometimes because the surface adsorption of grogs etc. hinder pozzolanic reaction, in the situation of utilizing a large amount of dredging soil, the surface adsorption of grogs manifests intensity the obstruction of pozzolanic reaction and has produced very large impact.
Studies show that, although the kind difference of soil and degree difference is to some extent dredged soil and had absorption Ca
2 +And OH
-Effect.When Fig. 1 (a), (b) expression make the dredging soil that gathers from the river of rubbing more and see through aqua calcis from the dredging soil that the Tokyo Bay gathers, the example of the variation of solution C a concentration and pH.In this test, fill the native 2g of dredging to be covered with soaking in the pipe of filter paper in the bottom surface, make from the top be adjusted into 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 that noticeable change only occurs for the Ca concentration of solution and OH-concentration (pH) when seeing through dredging soil.Ca
2+And OH
-Resultant of reaction (CaO-SiO when being the hydration and sclerosis take cement as representative
2-H
2The O gel) main composition composition.Ca
2+And OH
-By the native grogs absorption of dredging, concentration reduces, and therefore, thinks that this hinders curing.This Ca
2+And OH
-Adsorption be in that to use dredging soil to wait in the situation of earth distinctive, in material, do not contain in the common iron steel slag hydration and sclerosis thing of earth and do not recognize fully.For addressing this is that found that of repeating to study, the mass ratio of grogs in matrix material and the earth is set as more than the prescribed value, and water is carried out optimization from the ratio of matrix material in the scope different with the manufacturing technology of existing iron steel slag hydration and sclerosis thing, thus, can use in a large number dredging soil to wait earth, obtain the cured article (stone material) with stable intensity.
The present invention is based on knowledge as above, main points are as follows.
(1) a kind of artificial stone-like material's manufacture method, the method comprises: make the mixing material generation hydration and hardening that contains earth and matrix material make the artificial stone-like material, wherein, mixing material satisfies following condition (a) ~ (c).
(a) with respect to 100 volume % in mixing material, contain the above earth of 40 volume %.
(b) matrix material comprises blast-furnace cinder micro-powder end, blast-furnace cement (the blast furnace セ メ Application ト that is selected from the blast-furnace cinder micro-powder end, has added the alkali stimulant, slag cement), in the ordinary Portland cement (common Port Le ト ラ Application De セ メ Application ト, ordinary Portland cement) more than a kind.
(c) the matrix material amount is more than 1.7 times with respect to the grogs in the earth (solids component) by quality ratio, and satisfies following formula:
(quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2)/(quality of the water in the mixing material)＜2.0
(2) as described artificial stone-like material's manufacture method of (1), wherein, matrix material contains the blast-furnace cinder micro-powder end of 80 ~ 95 quality %, remainder be selected from ordinary Portland cement, lime powder, white lime, the blast-furnace cement more than a kind.
(3) a kind of artificial stone-like material's manufacture method, the method comprises: make the mixing material generation hydration and hardening that contains earth and matrix material make the artificial stone-like material, wherein, mixing material satisfies following condition (d) ~ (f).
(d) with respect to the mixing material of 100 volume %, contain the above earth of 40 volume %;
(e) matrix material comprise in the blast-furnace cinder micro-powder end that is selected from the blast-furnace cinder micro-powder end, added the alkali stimulant, blast-furnace cement, the ordinary Portland cement more than a kind and flying dust;
(f) the matrix material amount take mass ratio as more than 1.7 times, and satisfies following formula with respect to the grogs in the earth (solids component):
(quality of the quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2+ flying dust * 0.35)/(quality of the water in the mixing material)≤1.5.
(4) as described the artificial stone-like material's of (3) manufacture method, wherein, matrix material contains the blast-furnace cinder micro-powder end of 70 ~ 85 quality %, and, quality with respect to the blast-furnace cinder micro-powder end, the flying dust that contains 10 ~ 30 quality % ratios, remainder be selected from ordinary Portland cement, lime powder, white lime, the blast-furnace cement more than a kind.
(5) as described each described artificial stone-like material's manufacture method in (1) ~ (4), wherein, mixing material also contain aggregate (aggregate, aggregate).
(6) as described (5) described artificial stone-like material's manufacture method, wherein, aggregate is steel slag processed.
(7) as described (6) described artificial stone-like material's manufacture method, wherein, in the mixing material of per unit volume, the combined amount of steel slag processed is 700kg/m
3More than.
(8) as described each described artificial stone-like material's manufacture method in (1) ~ (7), wherein, it is the following particle of 0.075mm that earth contains the above particle diameter of 65 volume %.
(9) as described each described artificial stone-like material's manufacture method in (1) ~ (8), wherein, earth is the dredging soil that produces in dredging engineering, should dredge soil and temporarily be stored in the native storeroom of dredging, uses at this and dredges the native artificial stone-like material of manufacturing of dredging that native storeroom stores.
The invention effect
According to the present invention, the artificial stone-like material that can use in a large number dredging soil to wait the stable manufacturing of earth to have the above intensity of accurate admant.
Description of drawings
When graphical presentation aqua calcis shown in Figure 1 sees through dredging soil, the example that solution C a concentration and pH change;
The relation of graphical presentation shown in Figure 2 between the matrix material of mixing material mixing and the mass ratio of of the grogs in the earth (solids component) [grogs in matrix material/earth] and cured article intensity (through the uniaxial compressive strength after the maintenance in 28 days);
Graphical presentation mixing flying dust shown in Figure 3 is as the intensity index B/ water (=[quality of the quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2+ flying dust * 0.35]/[quality of the water in the mixing material]) of the mixing material of the part of matrix material and the relation between the slump value;
Fig. 4 is the chart of expression curing time and cured article intensity (uniaxial compressive strength) Relations Among;
Fig. 5 is the figure that explanation has utilized an embodiment of the invention of dredging native storeroom.
Embodiment
The present invention relates to a kind of artificial stone-like material's manufacture method, the method comprises, to containing earth and matrix material, the preferred mixing material that further contains aggregate stirs, along with hydration and hardening (because curing that the water of matrix material and reaction cause) is made the artificial stone-like material, mixing material satisfies following condition (a) ~ (c).
(a) with respect to the mixing material of 100 volume %, contain the above earth of 40 volume %.
(b) matrix material is by being selected from the blast-furnace cinder micro-powder end, having added consisting of more than a kind in the blast-furnace cinder micro-powder end, blast-furnace cement, ordinary Portland cement of alkali stimulant.
(c) the matrix material amount is with respect to the grogs in the earth (solids component) by quality ratio more than 1.7 times, and satisfies following formula.
(quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2)/(quality of the water in the mixing material)＜2.0
In addition, as matrix material, can also mix flying dust, in this case, mixing material satisfies following condition (d) ~ (f).
(d) with respect to the mixing material of 100 volume %, contain more than the earth 40 volume %.
(e) matrix material by be selected from the blast-furnace cinder micro-powder end, added in the blast-furnace cinder micro-powder end, blast-furnace cement, ordinary Portland cement of alkali stimulant more than a kind and flying dust consist of.
(f) the matrix material amount with mass ratio more than 1.7 times, and satisfies following formula with respect to the grogs in the earth (solids component).
(quality of the quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2+ flying dust * 0.35)/(quality of the water in the mixing material)≤1.5
Employed earth is to dredge the earth that soil is representative in the present invention, but in addition, for example, also can enumerate the mud that produced by excavation works, build mud etc.At this, so-called earth, generally speaking refer to pile up in heaps, and the earth with flowability that the people can not walk thereon.As its intensity roughly, take the bevel index of JIS-A-1228:2009 (the bevel index test method of the soil of compacting) regulation as 200N/mm
2Below.
(シ Le ト divides, and silt) adsorption effect of more its ions is larger, just more is difficult to obtain in the prior art the cured article of suitable intensity, and therefore, manufacture method of the present invention is particularly useful as the flour sand of the earth of representative divides to dredge soil.Particularly, can say the present invention in the situation of earth as object that will contain grogs (flour sand divides) below the above particle diameter 0.075mm of 65 volume %, particularly useful.
Need explanation the time, in the following description, refer to grogs that particle diameter 0.075mm is following " flour sand divides " of earth.
The objective of the invention is effectively to utilize to dredge soil as the earth of representative, therefore, the ratio of the earth in the preferable blendstocks is many as much as possible, therefore, the earth ratio in the mixing material (ratio that comprises moisture originally contained in the earth) is set as more than the 40 volume %.In addition, there is no particular limitation for the upper limit of earth ratio, and still, the ratio of dredging soil is 60 volume % when following, and steel amount of slag processed reaches in right amount 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 has the availability as the building stones substitute.Therefore, the earth ratio in the mixing material wishes to be below the 60 volume %.
As matrix material, can enumerate the blast-furnace cinder micro-powder end, add blast-furnace cinder micro-powder end, blast-furnace cement, the ordinary Portland cement of alkali stimulant, can use in them more than a kind.
In addition, from not using as far as possible the natural resource material to alleviate the viewpoint of carrying capacity of environment, and from guarantee the artificial stone-like material (below, be sometimes referred to as " cured article ") intensity and the viewpoint of manufacturing cost consider, as matrix material, preferably in the blast-furnace cinder micro-powder end, add the material that the alkali stimulant obtains.Make together by blast-furnace cinder micro-powder end and alkali stimulant to be used as matrix material, can generate the alkali environment, thus, can bring into play the hydraulicity at blast-furnace cinder micro-powder end.That is, can promote the hydration reaction at blast-furnace cinder micro-powder end, guarantee the intensity of cured article.
As the alkali stimulant, can use such as in lime powder, white lime, ordinary Portland cement, the blast-furnace cement etc. more than a kind.In this situation, preferably contain the blast-furnace cinder micro-powder end of 80 ~ 95 quality %, remainder be selected from lime powder, white lime, ordinary Portland cement, the blast-furnace cement more than a kind.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 the 80 quality %, then remaining alkali composition can not remain in the cured article.Therefore, when marine grade was used cured article, alkali was little to the load that briny environment produces.In addition, also favourable aspect economy.On the other hand, even surpass 95 quality % in the ratio at blast-furnace cinder micro-powder end, also can stir curing.But, if below 95 quality %, then make it easily stable dispersion, because of the alkali inhibition of dredging soil so that the effect of stimulant diminishes etc., therefore, the effect of adding the blast-furnace cinder micro-powder end is high, do not need to use plurality of raw materials, can not produce facility load, therefore, have usability at economic aspect.
As shown in Figure 1, dredging soil waits earth to have Ca
2+And OH
-Adsorption, therefore, think: the amount at its grogs might be to Ca
2+And OH
-Adsorptive capacity produce large impact, and in the situation that cement solidifies by gelation, it is very important forming gel network.Therefore, change the balance of dredging soil and matrix material, meanwhile studied the factor relevant with manifesting intensity.Its result learns that the ratio of grogs that contains in matrix material amount and the dredging soil has great impact for intensity.
Fig. 2 represents being mixed in matrix material and the mass ratio [grogs in matrix material/earth] of of the grogs in the earth (solids component) and the result that the relation between the cured article intensity (through the uniaxial compressive strength after the maintenance in 28 days) is studied in the mixing material.In this test, the dredging soil that the use flour sand is divided into 90 volume % is as earth, and the material take the blast-furnace cinder micro-powder end as main body uses white lime, ordinary Portland cement as the alkali stimulant as matrix material.In addition, the ratio of matrix material amount and water is set as (quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2)/(quality of the water in the mixing material)＜2.0 in the mixing material.
According to Fig. 2 as can be known, guarantee the intensity of cured article, then the amount with respect to grogs of earth needs a certain amount of above matrix material.As the intensity of cured article, be 9.8N/mm as long as surpass the necessary strength level of accurate admant
2More than just substantially no problem.But, in the inhomogeneous situation of having considered the inhomogeneous of dredging soil and having made, in order to ensure quality, be necessary as ready mixed concrete, to make target strength to have 3N/mm
2The intensity of degree is rich.Particularly, if [in matrix material/earth grogs] 〉=1.7 as can be known then can will be controlled at the 15N/mm with intensity affluence through the uniaxial compressive strength after the maintenance in 28 days
2About.Therefore, the matrix material amount in the mixing material is made as more than 1.7 times by quality ratio with respect to the grogs in the earth (solids component).In addition, if its mass ratio is more than 2.2 times, even then dredging soil exists inhomogeneously, also can expect to show stable intensity, therefore, more preferably.
On the other hand, when merely increasing the amount of matrix material, matrix material can occur with respect to the state of water excess, strength decreased occur on the contrary easily and fill bad.For the ratio of the water in the mixing material and matrix material, can adjust according to following index, described index is that the intensity index when using with iron steel slag hydration and sclerosis thing form is the intensity index of benchmark, that is, (quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2)/(quality of the 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 the blast-furnace cement is made as " quality at blast-furnace cinder micro-powder end ", the quality corresponding with the ratio of mixture of ordinary Portland cement in the blast-furnace cement is made as " quality of ordinary Portland cement ", and the above-mentioned formula of substitution.
In the situation of iron steel slag hydration and sclerosis thing, the mixture ratio of design matrix material and water adopts intensity to surpass 2.0 condition (with reference to " brief guide of iron steel slag hydration and sclerosis thing technology ") so that intensity index reaches more than 1.5 usually.In contrast, distinguish when using dredging soil, need to adopt diverse condition.Table 1 expression: be that the volume fraction of 220% (cumulative water-oil ratio=([amount of moisture (quality %) of dredging soil]/[the solids component amount (quality %) of dredging soil]) * 100), dredging soil is the result that the relation between the intensity (through the uniaxial compressive strength after the maintenance in 28 days) of the intensity index of the mixing material that stirs under the condition comparatively fully of 50% moisture, the cured article that obtains is studied to the cumulative water-oil ratio at dredging soil.Thus, although intensity is higher during intensity index higher (that is, matrix material increases with respect to the ratio of water), just reach the highest to about 1.95, bad above occurring stirring under 2.3 the condition.According to above result, the matrix material amount is set as (quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2)/(quality of the water in the mixing material) and less than 2.0, is preferably set to below 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, can also mix flying dust.For example, mix in the situation of steel slag processed as aggregate in mixing material as described later, owing to contain a large amount of Ca in the steel slag processed, therefore, the alkali composition becomes superfluous sometimes.Dredging soil is with SiO
2Be principal constituent, therefore, can carry out hydration reaction with the alkali composition of surplus and make it stabilization.But, consist of the mineral facies of the native solids of dredging because dredging the different, therefore, sometimes reactive unstable of area and production process.In this case, the preferred flying dust that mixes is as the part of matrix material, that is, be selected from the blast-furnace cinder micro-powder end in use, added in the blast-furnace cinder micro-powder end, blast-furnace cement, ordinary Portland cement of alkali stimulant more than a kind in, be used in combination flying dust.
The composition of flying dust is with amorphous SiO
2, Al
2O
3Centered by, therefore, in the situation that has produced superfluous alkali composition, compare with the material of crystalline, be expected to cause fast pozzolanic reaction.But if excessively mix flying dust, then the Ca quantitative change in the matrix material gets very fewly, probably also can damage the stability that original effect is namely reacted.Consider from this viewpoint, in the situation of mixing flying dust, with respect to being selected from the blast-furnace cinder micro-powder end, having added the total amount more than a kind in the blast-furnace cinder micro-powder end, blast-furnace cement, ordinary Portland cement of alkali stimulant, the upper limit of the ratio of flying dust is preferably roughly about 40 quality %.
In addition, as above-mentioned, as the matrix material that is blended in the mixing material, the material that forms particularly preferably in adding the alkali stimulant in the blast-furnace cinder micro-powder end.When being used in combination this matrix material and flying dust, the blast-furnace cinder micro-powder end of preferably containing 70 ~ 85 quality %, and, quality with respect to the blast-furnace cinder micro-powder end, the flying dust that contains 10 ~ 30 quality % ratios, remainder be selected from ordinary Portland cement, lime powder, white lime, the blast-furnace cement more than a kind.Reason and the previous reasons of mixing the blast-furnace cinder micro-powder end in above-mentioned scope are basic identical.But owing to be used in combination flying dust, therefore, the blending ratio at blast-furnace cinder micro-powder end tails off relatively.In addition, as noted earlier, when excessively mixing flying dust, the Ca quantitative change in the matrix material gets very few, probably also can damage the stability that original effect is namely reacted.Therefore, the upper limit of preferred flying dust combined amount is counted about 30 quality % with the ratio with respect to the quality at blast-furnace cinder micro-powder end.On the other hand, obtain to mix the effect of flying dust, rolling off the production line preferably of flying dust combined amount counted about 10 quality % with the ratio with respect to the quality at blast-furnace cinder micro-powder end.
In addition we know, mixing in the situation of flying dust as the part of matrix material, the ratio of water and matrix material can be adjusted according to following index in the mixing material, the intensity index of described index when using with the form of iron steel slag hydration and sclerosis thing is the intensity index of benchmark, i.e. (quality of the quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2+ flying dust * 0.35)/(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 the blast-furnace cement is made as " quality at blast-furnace cinder micro-powder end ", the quality corresponding with the ratio of mixture of ordinary Portland cement in the blast-furnace cement is made as " quality of ordinary Portland cement ", and the above-mentioned formula of substitution.
Such as previously mentioned, unmixed flying dust is during as matrix material, and the intensity of cured article reaches the highest when intensity index 1.95, it is bad stirring to occur at 2.3 o'clock, still, and after mixing flying dust, the amount of powder further increases in the mixing material, and therefore, easier appearance is stirred bad.To this, Fig. 3 represents: to being under the condition of the flying dust that mixed of the ratio of 25 quality % in the quality with respect to the blast-furnace cinder micro-powder end, and the result that the relation of the slump value of above-mentioned intensity index and mixing material is investigated.In this test, the dredging soil that the use flour sand is divided into 92 volume % is as earth, and the material take the blast-furnace cinder micro-powder end as main body uses white lime, ordinary Portland cement as the alkali stimulant, the remix flying dust as matrix material.
According to Fig. 3, be 1.5 when following at intensity index, can guarantee that the slump value is more than the 3cm, can obtain suitable whipped state, still, surpass at 1.5 o'clock at intensity index, the slump value significantly reduces, even naked eyes also can be confirmed to begin to have and stir bad tendency.Therefore, surpass at 1.5 o'clock at intensity index, although can obtain intensity, reached the highest, when intensity index further becomes large, then produce strength decreased.Therefore, mixing in the situation of flying dust as the part of matrix material, preferred intensity index is below 1.5.
Amount of moisture in the mixing material is determined according to cumulative water-oil ratio, volume ratio and the intensity index of dredging soil.Generally speaking, the amount of moisture in the mixing material is counted about 30 ~ 50% with the volume fraction in the mixing material.
Same with concrete etc., can be in mixing material combined aggregate, consider preferred combined aggregate from characteristic surfaces such as volume stabilities.Same with common concrete, can use natural sand, natural rubble as aggregate, still, consider from the viewpoint that obtains not contain as far as possible natural resource and obtain high-intensity material, preferably use steel slag processed.In addition, with the natural rubble ratio, steel slag processed heavier (than great) therefore, by this is used as aggregate, can be guaranteed the weight (high specific gravity) of cured article.
As steel slag processed, can enumerate molten iron pre-treatment slag (dephosphorization slag, desiliconization slag, desulfurization slag etc.), converter decarburization slag, electric furnace slag etc., can use in them more than a kind.The preferred maximum particle diameter of steel slag processed is the slag of the following granularity of 25mm.
It is suitable that aggregate counts about 15 ~ 50% with the volume fraction in the mixing material.In addition, using in the situation of steel slag processed as aggregate, considering that from guaranteeing the weight as cured article, the viewpoint of volume stability the steel amount of slag processed in the preferable blendstocks is 700Kg/m
3More than.
In manufacture method of the present invention, mix earth, matrix material, more preferably combined aggregate has added water as required, and the mixing material that obtains is stirred, and the hydration reaction by matrix material solidifies this stirrings thing, thus the acquisition artificial stone-like material.
Dredging soil waits earth to remove foreign matter by sieve etc. as required.As the whipping appts of mixing material, can use for example common fresh concrete whipping device, still, the hoisting machinery that also can use scraper bowl etc. to be used for civil engineering work waits in the ward out of doors and carries out.
Make and stir thing and solidify, for example, can be poured in the suitable mold frame be cured, maintenance (hydration and hardening), also can wait out of doors and pour into stratiform in the ward, be cured, maintenance (hydration and hardening).Especially, when a large amount of manufacturing stone material, preferably in the ward, pour into stratiform.
Fig. 4 represents to investigate between preserving period the result with the Relations Among of cured article intensity (through the uniaxial compressive strength after the maintenance in 28 days).In this test, use dredging soil that flour sand is divided into 60 volume % as earth, the material take the blast-furnace cinder micro-powder end as main body is as matrix material, and, used white lime, ordinary Portland cement as the alkali stimulant.In addition, the ratio of matrix material amount and water is made as (quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2)/(quality of the water in the mixing material)＜2.0 in the mixing material.Between preserving period be until obtain targeted compression intensity during, generally speaking, be advisable more than about as shown in Figure 47 days.
The stone material that obtains as required break process becomes suitable size.This break process also can be carried out with crusher, in addition, as described above, in the time will stirring thing pour into stratiform in the ward, with the shredder assembly coarse breaking of the cured article of ward, then, can carry out break process with crusher.In addition, usually carry out classification with the sieve cured article of break process (block), obtain the block of the size of regulation.For example, in the situation as uses such as submerged breakwater materials, obtain the block of size about 150 ~ 500mm.
It is 9.8N/mm that preferred stone material has through the uniaxial compressive strength after the maintenance in 28 days
2More than (hardness of the accurate admant of stipulating among the JIS-A-5006:1995), preferably has 15N/mm
2Above intensity, manufacturing method according to the invention can easily be made the stone material of this intensity.Especially, use steel slag processed as the cured article of aggregate manufacturing, especially use steel slag processed as aggregate and use blast-furnace cinder micro-powder end and alkali stimulant (for example, ordinary Portland cement) can guarantee enough intensity and weight (high specific gravity) as the cured article of matrix material manufacturing.
Below, the method for making the artificial stone-like material is described, in the method, will temporarily be stored at the dredging soil that dredging engineering produces the native storeroom of dredging, this dredging soil that is stored in the native storeroom of dredging is used as earth, thereby make the artificial stone-like material.
The dredging soil that produces in dredging engineering is different on moisture ratio because of differences such as dredging places.In addition, carry out dredging engineering near carry out in the situation of aquatic products thing (sea sedge, oyster etc.) cultivation etc., the seawater dirt that dredging engineering causes might affect the aquatic products deposits yields, therefore, dredging engineering is not can both carry out the whole year, and engineering is limited (that is seasonality, is arranged) period to some extent.Under this situation, when enforcement was of the present invention, the dredging soil that preferably will produce in dredging engineering temporarily was stored in the native storeroom of dredging, used to be stored in dredging soil manufacturing cured article that this dredges native storeroom.Thus, can obtain following effect: even (i) owing to the differences such as dredging place cause dredging in the different situation of native cumulative water-oil ratio, by temporarily being stored in the native storeroom of dredging, can make the cumulative water-oil ratio equalization of dredging soil; (ii) even by temporarily being stored in the native storeroom of dredging, can stably in the cured article manufacturing engineering, supply with dredging soil period restricted to engineering period of dredging, that can not take to dredge in the whole year soil; (iii) be stored in the native storeroom of dredging by dredging soil, can easily carry out evaluation, management and the adjustment etc. of cumulative water-oil ratio.
Fig. 5 is the explanatory view that expression has utilized an embodiment of the invention of dredging native storeroom.The dredging soil that produces in the dredging engineering temporarily is stored in the native storeroom of dredging.Form and the structure of dredging native storeroom are arbitrarily, for example, can make at ward cumulose soil sand and slag etc. the dykes and dams of ring-type, and side stores dredging soil within it.The dredging soil that produces in dredging engineering all is transported to the native storeroom of dredging as storing mud regardless of moisture ratio and other proterties.Add above-mentioned matrix material to dredge the dredging soil of native storeroom supplying with from this, more preferably combined aggregate adds water as required, and the mixing material that obtains is stirred, and the hydration reaction by matrix material makes this stirrings thing curing obtain the artificial stone-like material.
Embodiment
[embodiment 1]
Mixing material stirs and (uses 0.75m under the mixing condition shown in table 2 and the table 3
3Whipping device carry out mixing in 5 minutes, discharging through after the specified time), make the stirring thing of this mixing material solidify manufacturing cured article (artificial stone-like material) in the die for molding of the size of diameter 100mm * height 200mm.Dredging soil uses the flour sand of taking from the bottom in Tokyo Bay to be divided into the dredging soil of 90 volume %, adds as required water and carries out the moisture adjustment.In addition, as the i.e. steel slag processed of aggregate, use converter slag (particle diameter 0 ~ 25mm).Measured uniaxial compressive strength through the cured article after the maintenance in 28 days 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, even in the inventive example, obtained to consider safety coefficient (+3N/mm
2) also fully satisfy the cured article (stone material) of the strength of stability of accurate admant characteristic.Relative with it, in comparative example, although intensity reaches 9.8N/mm
2More than, higher with patent documentation 3 phase specific tenacitys, still, the cured article of enough intensity in the time of can not obtaining to consider above-mentioned safety coefficient.
[embodiment 2]
Mixing material stirs and (uses 0.75m under the mixing condition shown in the table 4
3Whipping device mixed 5 minutes, discharge through after the specified time), make the stirring thing of this mixing material solidify manufacturing cured article (artificial stone-like material) in the die for molding of the size of diameter 100mm * height 200mm.Dredging soil uses the flour sand of taking from the bottom of Seto Island Sea to be divided into the dredging soil of 92 volume %, adds as required water and carries out the moisture adjustment.In addition, as the i.e. steel slag processed of aggregate, use converter slag (particle diameter 0 ~ 25mm).Measured uniaxial compressive strength through the cured article after the maintenance in 28 days by compression testing (JIS-A-1108:2006).Table 4 represents its result in the lump.
According to table 4, even in the inventive example, obtained to consider safety coefficient (+3N/mm
2) also fully satisfy the cured article (stone material) of the strength of stability of accurate admant characteristic.In contrast, in comparative example, although intensity reaches 9.8N/mm
2More than, higher with patent documentation 3 phase specific tenacitys, still, the cured article of enough intensity in the time of can not obtaining to consider above-mentioned safety coefficient.
Claims (9)
1. an artificial stone-like material manufacture method, the method is to make the mixing material generation hydration and hardening that contains earth and matrix material make artificial stone-like material's method, wherein, mixing material satisfies following condition (a) ~ (c),
(a) with respect to the mixing material of 100 volume %, contain the above earth of 40 volume %;
(b) matrix material comprise in the blast-furnace cinder micro-powder end that is selected from the blast-furnace cinder micro-powder end, added the alkali stimulant, blast-furnace cement, the ordinary Portland cement more than a kind;
(c) the matrix material amount is more than 1.7 times with respect to the grogs in the earth (solids component) by quality ratio, and satisfies following formula:
(quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2)/(quality of water in the mixing material)＜2.0.
2. artificial stone-like material's as claimed in claim 1 manufacture method, wherein, matrix material contains the blast-furnace cinder micro-powder end of 80 ~ 95 quality %, remainder be selected from ordinary Portland cement, lime powder, white lime, the blast-furnace cement more than a kind.
3. an artificial stone-like material manufacture method, the method is to make the mixing material generation hydration and hardening that contains earth and matrix material make artificial stone-like material's method, wherein, mixing material satisfies following condition (d) ~ (f),
(d) with respect to the mixing material of 100 volume %, contain the above earth of 40 volume %;
(e) matrix material comprise in the blast-furnace cinder micro-powder end that is selected from the blast-furnace cinder micro-powder end, added the alkali stimulant, blast-furnace cement, the ordinary Portland cement more than a kind and flying dust;
(f) the matrix material amount is more than 1.7 times with respect to the grogs in the earth (solids component) by quality ratio, and satisfies following formula:
(quality of the quality of the quality+ordinary Portland cement of the quality+white lime of the quality+lime powder at blast-furnace cinder micro-powder end * 2+ flying dust * 0.35)/(quality of the water in the mixing material)≤1.5.
4. artificial stone-like material's as claimed in claim 3 manufacture method, wherein, matrix material contains the blast-furnace cinder micro-powder end of 70 ~ 85 quality %, and, quality with respect to the blast-furnace cinder micro-powder end, the flying dust that contains 10 ~ 30 quality % ratios, remainder be selected from ordinary Portland cement, lime powder, white lime, the blast-furnace cement more than a kind.
5. such as the manufacture method of each described artificial stone-like material in the claim 1 ~ 4, wherein, mixing material also contains aggregate.
6. artificial stone-like material's as claimed in claim 5 manufacture method, wherein, aggregate is steel slag processed.
7. artificial stone-like material's as claimed in claim 6 manufacture method, wherein, the combined amount of steel slag processed is 700kg/m in the mixing material of per unit volume
3More than.
8. such as the manufacture method of each described artificial stone-like material in the claim 1 ~ 7, wherein, it is the following particle of 0.075mm that earth contains the above particle diameter of 65 volume %.
9. such as the manufacture method of each described artificial stone-like material in the claim 1 ~ 8, wherein, the dredging soil of earth for producing in dredging engineering should be dredged soil and temporarily be stored in the native storeroom of dredging, used at this dredging soil of dredging the storage of native storeroom and made the artificial stone-like material.
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| JP2010-104844 | 2010-04-30 | ||
| JP2010104844 | 2010-04-30 | ||
| JP2010-123994 | 2010-05-31 | ||
| JP2010123994 | 2010-05-31 | ||
| JP2010-294458 | 2010-12-29 | ||
| JP2010294458 | 2010-12-29 | ||
| JP2011036555A JP5712668B2 (en) | 2010-04-30 | 2011-02-23 | Manufacturing method of solidified body |
| JP2011-036555 | 2011-02-23 | ||
| PCT/JP2011/060801 WO2011136395A1 (en) | 2010-04-30 | 2011-04-28 | Method for producing artificial stone material |
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| CN102869634B CN102869634B (en) | 2015-04-22 |
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| JP2018126673A (en) * | 2017-02-06 | 2018-08-16 | 五洋建設株式会社 | Method of producing artificial stone |
| JP2018172245A (en) * | 2017-03-31 | 2018-11-08 | Ｊｆｅスチール株式会社 | Method for producing solidified body |
| 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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| KR102099770B1 (en) | 2019-10-02 | 2020-04-10 | (주)디엠 | Jointing device for artificial stones |
| KR102074862B1 (en) | 2019-10-02 | 2020-03-02 | (주)디엠 | Jointing device for artificial stones |
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| TWI434818B (en) | 2014-04-21 |
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| TW201144257A (en) | 2011-12-16 |
| CN102869634B (en) | 2015-04-22 |
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