JP4584630B2 - Soil improvement material - Google Patents
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- JP4584630B2 JP4584630B2 JP2004166537A JP2004166537A JP4584630B2 JP 4584630 B2 JP4584630 B2 JP 4584630B2 JP 2004166537 A JP2004166537 A JP 2004166537A JP 2004166537 A JP2004166537 A JP 2004166537A JP 4584630 B2 JP4584630 B2 JP 4584630B2
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- 239000002689 soil Substances 0.000 title claims description 47
- 239000000463 material Substances 0.000 title claims description 33
- 239000010802 sludge Substances 0.000 claims description 21
- 239000000123 paper Substances 0.000 claims description 18
- 229910052602 gypsum Inorganic materials 0.000 claims description 15
- 239000010440 gypsum Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000002893 slag Substances 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 239000011398 Portland cement Substances 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 8
- 239000003610 charcoal Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000002956 ash Substances 0.000 description 20
- 239000004568 cement Substances 0.000 description 19
- 238000010276 construction Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 150000004683 dihydrates Chemical class 0.000 description 4
- 239000010903 husk Substances 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 239000010902 straw Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000003516 soil conditioner Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
本発明は、建設発生土および汚泥の再利用の分野で使用される土質改良材に関するものである。 The present invention relates to a soil conditioner used in the field of construction generated soil and sludge recycling.
従来から軟弱地盤の改良としてセメントを主成分としてスラグ、フライアッシュ等のポラゾン材、アルミナセメント、ジェットセメント等の特殊な成分の強度増進材、石膏、硫酸ソーダ等のセメント水和の刺激材等で構成されるセメント系固化材が使用されている。 セメント系固化材は（イ）エトリンガイトの生成により結合水として取り込まれ土の含水比が低下する。（ロ）セメント系固化材から溶出したカルシウムイオンによって土粒子が凝集、団粒化され砂質土に近い性状となる。（ハ）セメントの水和によってケイ酸カルシウム水和物の生成により強度が上昇する。（ニ）長期材齢では土粒子とセメント水和によって生成した水酸化カルシウムとポラゾン反応で強度増進する。
近年、建設工事に伴って莫大な量の建設発生土および汚泥が搬出され、その処分地の確保が困難となりつつあり、建設発生土および汚泥の再利用が望まれている。しかし、建設発生土および汚泥の一部には含水比が高く汚泥状のものがあり、再利用のためにはダンプトラックに山積みが可能で、かつ人が歩行可能な程度の状態に改良する必要がある。また、改良した土は、圧密が可能で、かつ地下水を汚染することなく、植物が容易に育成できるように、できるだけＰＨが低いことが要求される。
一方、従来のセメント系固化材による改良では、ハンドリング性状が良好となる程度に改良すると上述した反応によって過剰な強度が発現するという問題があった。また、セメント系固化材で改良した土は添加量にもよるがＰＨが高くなり過ぎるという欠点があった。
In recent years, a huge amount of construction generated soil and sludge are carried out with construction work, and it is becoming difficult to secure the disposal site, and it is desired to reuse the construction generated soil and sludge. However, some of the generated soil and sludge have a high water content and are sludge-like. For reuse, dump trucks can be piled up and improved so that people can walk. There is. Further, the improved soil is required to have as low a pH as possible so that the plant can be compacted and plants can be easily grown without contaminating the groundwater.
On the other hand, in the improvement by the conventional cement-based solidifying material, there is a problem that when the handling property is improved to an extent that the handling property is good, excessive strength is expressed by the above-described reaction. In addition, the soil improved with the cement-based solidifying material has a drawback that the pH becomes too high depending on the amount of addition.
したがって、本発明の目的は、建設発生土および汚泥の再利用の分野で使用される低強度で、かつＰＨが高くなり過ぎない土質改良材をより経済的に提供することにある。 Accordingly, an object of the present invention is to more economically provide a soil improvement material which is used in the field of construction generated soil and sludge recycling and has a low strength and does not have an excessively high PH.
本発明者らはこれまで研究がなされてこなかったペーパスラッジ、木、木炭、紙、藁、籾殻及び草木の焼却灰を含む土質改良材について着目するとともにこれを鋭意研究し、かつ、この土質改良材について建設発生土および汚泥の含水比の低下と低強度の改良に効果があることを見出して、本発明を完成するに至ったものである。
本発明に係る土質改良材は、この目的を達成するために、
ペーパスラッジ若しくは木、木炭、紙、藁、籾殻及び草木の焼却灰と、ポルトランドセメントと、高炉スラグ微粉末と、石膏とからなること、および、
上記焼却灰には吸水効果があり、かつ、その焼却灰の８００℃における強熱減量が３％未満であること、および、
上記における焼却灰が１５重量％から６０重量％であること、および、
上記におけるポルトランドセメントが２０重量％から６０重量％であること、および、 上記における高炉スラグ微粉末が１０重量％から４０重量％であること、および、
上記における石膏が１０重量％以下であること
を特徴とする。
The present inventors have so far this extensive research with paying attention to soil improvement agent comprising paper sludge studies have not been made, wood, charcoal, paper, straw, chaff and vegetation incineration ash, and the soil improvement have found that there is effective in improving the decline and low intensity of construction waste soil and sludge water content of wood, it has been led to completion of the present invention.
In order to achieve this object , the soil improvement material according to the present invention,
Consisting of incinerated ash of paper sludge or wood, charcoal, paper, firewood, chaff and vegetation , Portland cement , fine powder of blast furnace slag , and gypsum ; and
The incinerated ash has a water absorption effect, and its ignition loss at 800 ° C. is less than 3%, and
Incineration ash in the above is 15 wt% to 60 wt% , and
The Portland cement in the above is 20 wt% to 60 wt% , the fine blast furnace slag powder in the above is 10 wt% to 40 wt% , and
The gypsum in the above is 10% by weight or less .
本発明によれば、建設発生土および汚泥の含水比の低下と低強度の改良に効果があり、建設発生土および汚泥の再利用が可能となる。本発明はペーパスラッジ、木、木炭、紙、藁、籾殻及び草木の焼却灰が使用されていることから産業廃棄物の有効利用に貢献すると共に、これらの焼却灰は可溶性のシリカとカルシウムを含有しているため肥料としての効果も大いに期待できる。 ADVANTAGE OF THE INVENTION According to this invention, it is effective in the fall of the moisture content ratio of construction generation soil and sludge, and improvement of low intensity | strength, and reuse of construction generation soil and sludge is attained. The present invention contributes to the effective use of industrial waste because of the use of paper sludge, wood, charcoal, paper, firewood, rice husk and vegetation incineration ash, and these incineration ash contains soluble silica and calcium. Therefore, the effect as a fertilizer can be greatly expected.
本発明に使用するペーパスラッジ、木、木炭、紙、藁、籾殻及び草木の焼却灰は、８００℃における強熱減量が３％未満であることを特徴とする。３％以上ではペーパスラッジ、木、木炭、紙、藁、籾殻及び草木が不完全燃焼の恐れがあり使用できない。 The incinerated ash used in the present invention is characterized in that the loss on ignition at 800 ° C. is less than 3%. If it is 3% or more, paper sludge, wood, charcoal, paper, straw, rice husk and vegetation may be incompletely burned and cannot be used.
本発明の土質改良材は、ペーパスラッジ、木、木炭、紙、藁、籾殻及び草木の焼却灰を１５重量％から６０重量％であることを特徴とする。これらの焼却灰自体に吸水効果があり、本発明の土質改良材の改良効果は固化改良だけではなく、前記吸水効果の物理的効果によることを特徴とする。従って、建設発生土および汚泥の含水比の低下に有効である。上述の焼却灰の割合が１５重量％を下回ると、その他の材料の割合が相対的に増加し、吸水効果による改良効果が小さくなる。また、上述の焼却灰の割合が６０重量％を上回ると強度発現効果が小さくなる。 The soil improvement material of the present invention is characterized by containing 15% to 60% by weight of incinerated ash of paper sludge, wood, charcoal, paper, straw, rice husk and vegetation. These incineration ash itself has a water absorption effect, and the improvement effect of the soil improvement material of the present invention is characterized by not only the solidification improvement but also the physical effect of the water absorption effect. Therefore, it is effective in reducing the moisture content of construction generated soil and sludge. When the ratio of the incinerated ash is less than 15% by weight, the ratio of other materials is relatively increased, and the improvement effect due to the water absorption effect is reduced. Moreover, when the ratio of the above-mentioned incineration ash exceeds 60% by weight, the strength development effect becomes small.
本発明の土質改良材は、セメントが２０重量％から６０重量％であることを特徴とする。６０重量％を超えると、強度発現が過剰になると共に改良土のＰＨが高くなり過ぎる。また、２０重量％下回ると強度発現効果が小さくなるので好ましくない。
ポルトランドセメントには早強、普通、中庸熱、低熱、エコセメントがあるが、本発明では何れのポルトランドセメントも使用することができる。
The soil improvement material of the present invention is characterized in that cement is 20 wt% to 60 wt%. When it exceeds 60% by weight, the strength expression becomes excessive and the pH of the improved soil becomes too high. On the other hand, if it is less than 20% by weight, the strength development effect becomes small, which is not preferable.
Portland cement includes early strength, normal, moderate heat, low heat, and eco-cement, but any Portland cement can be used in the present invention.
本発明の土質改良材は、高炉スラグ微粉末が１０重量％から４０重量％であることを特徴とする。高炉スラグ微粉末の重量％を１０重量％から４０重量％と限定した理由は、改良の対象となる土の種類によって改良効果が異なるためである。すなわち、有機質を含む腐植土の場合には高炉スラグ微粉末による改良効果が大きいが、シルト質や関東ロームには改良効果が小さいことによる。
本発明において、高炉スラグ微粉末の粉末度は特に限定しないが、ブレーン比表面積で４０００から６０００ｃｍ２／ｇが望ましい。
The soil improvement material of the present invention is characterized in that the blast furnace slag fine powder is 10 wt% to 40 wt%. The reason why the weight% of the blast furnace slag fine powder is limited to 10% to 40% by weight is that the improvement effect varies depending on the type of soil to be improved. That is, in the case of humus containing organic matter, the improvement effect by blast furnace slag fine powder is large, but the improvement effect is small in silty and Kanto loam.
In the present invention, the fineness of the blast furnace slag fine powder is not particularly limited, but is preferably 4000 to 6000 cm 2 / g in terms of Blaine specific surface area.
石膏には、天然無水石膏、フッ酸無水石膏、天然２水石膏や副産２水石膏あるいは廃石膏ボードから回収した２水石膏、また、これらの２水石膏を焼成して製造した無水石膏があるが、本発明では、ＳＯ３量が４０％以上含有している石膏であれば、すべて使用できる。また、その粉末度は特に限定しないが、ブレーン比表面積で３０００から８０００ｃｍ２／ｇ、好ましくは４０００から６０００ｃｍ２／ｇである。 Gypsum includes natural anhydrous gypsum, hydrofluoric acid anhydrous gypsum, natural dihydrate gypsum, byproduct dihydrate gypsum, or dihydrate gypsum recovered from waste gypsum board, and anhydrous gypsum produced by firing these dihydrate gypsum. However, in the present invention, any gypsum containing 40% or more of SO3 can be used. Further, the fineness is not particularly limited, 8000 cm 2 / g, from 3000 Blaine specific surface area is preferably from 4000 6000cm 2 / g.
石膏を０重量％から１０重量％に限定した理由は、石膏が多いとエトリンガイドの生成量が増加し、初期の強度発現が過剰になるからである。また、砂質土のように改良の対象となる土の種類によっては、石膏による改良効果があまり無い場合があるからである。 The reason for limiting the amount of gypsum to 0 to 10% by weight is that if there is a large amount of gypsum, the amount of ethrin guide produced increases and the initial strength expression becomes excessive. Further, depending on the type of soil to be improved, such as sandy soil, there is a case where there is not much improvement effect by gypsum.
以下から実施例の説明入るが、本発明の土質改良材とセメント系固化材の配合を図１の表１に示す。実施例に用いた高炉スラグ微粉末および天然無水石膏の粉末度は、ブレーン比表面積で４５００および４２００ｃｍ２／ｇである。また、セメントは普通ポルトランドセメントである。この表１中の記号Ｃ、Ｄ、Ｅに示す改良材は市販のセメント系固化材に相当する配合である。 Examples will be described below. Table 1 in FIG. 1 shows the composition of the soil conditioner and cement-based solidifying material of the present invention. The fineness of the blast furnace slag fine powder and natural anhydrous gypsum used in the examples is 4500 and 4200 cm 2 / g in terms of Blaine specific surface area. The cement is usually Portland cement. The improved materials indicated by symbols C, D, and E in Table 1 are blends corresponding to commercially available cementitious solidifying materials.
ペーパスラッジ焼却灰の化学成分を図２の表２で示す。この表２の結果によりペーパスラッジ焼却灰の８００℃における強熱減量は１．５％であった。すなわち、本発明の請求項２を満たす焼却灰である。
The chemical composition of the paper sludge incineration ash is shown in Table 2 of FIG. As a result of Table 2, the loss on ignition of the paper sludge incinerated ash at 800 ° C. was 1.5%. That is, the incinerated ash satisfies
本発明の土質改良材とセメント系固化材による改良土の一軸圧縮強度の結果を図３の表３に示す。実施した試料土の種類、湿潤密度、含水比を合わせて表３に記載した。 Table 3 in FIG. 3 shows the results of the uniaxial compressive strength of the improved soil by the soil improvement material and the cement-based solidifying material of the present invention. The type of sample soil, the wet density, and the water content ratio are shown in Table 3.
この表３の結果により、本発明の土質改良材はセメント系固化材と比較して試料土の種類にかかわらず強度発現が抑えられた。 As a result of Table 3, the soil quality improving material of the present invention was suppressed in strength development regardless of the type of the sample soil as compared with the cement-based solidified material.
細骨材の製造時に発生した脱水ケーキを本発明の土質改良材で改良した例を図４の表４に示す。 Table 4 in FIG. 4 shows an example in which the dewatered cake generated during the production of fine aggregate is improved with the soil improvement material of the present invention.
この表４の結果により、本発明の土質改良材の添加量が５％を超えると強度が過剰となり、５％程度が適切であった。また、ペーパスラッジ焼却灰のみの改良では、含水比が減少したが強度発現はしなかった。 From the results shown in Table 4, when the amount of the soil improvement material of the present invention exceeds 5%, the strength becomes excessive and about 5% is appropriate. In addition, improvement with only paper sludge incineration ash reduced the water content but did not develop strength.
本発明の土質改良材とセメントによる改良土のＰＨの結果を図５の表５に示す。この実施例に用いた試料土は、火山灰質粘性土、湿潤密度１４６４Ｋｇ／ｍ３、含水比９１．８％である。 Table 5 in FIG. 5 shows the PH results of the improved soil and the soil improved material according to the present invention. The sample soil used in this example is a volcanic ash clay, a wet density of 1464 Kg / m 3 , and a water content ratio of 91.8%.
この表５の結果により、本発明の土質改良材による改良土のＰＨは普通ポルトランドセメントによる改良土のＰＨと比較して１程度減少した。 As a result of Table 5, the pH of the improved soil by the soil improvement material of the present invention was reduced by about 1 compared with the PH of the improved soil by ordinary Portland cement.
尚、上記実施形態ではペーパスラッジ焼却灰で説明したが、ペーパスラッジ焼却灰に代えて木、木炭、紙、藁、籾殻及び草木の焼却灰を使用しても本発明の目的を達成することができる。 Although the paper sludge incineration ash has been described in the above embodiment, the object of the present invention can be achieved even by using wood, charcoal, paper, straw, rice husk, and plant incineration ash instead of paper sludge incineration ash. it can.
Claims (1)
上記焼却灰には吸水効果があってその焼却灰の８００℃における強熱減量が３％未満であること、および、
上記における焼却灰が１５重量％から６０重量％であること、および、
上記におけるポルトランドセメントが２０重量％から６０重量％であること、および、 上記における高炉スラグ微粉末が１０重量％から４０重量％であること、および、
上記における石膏が１０重量％以下であること
を特徴とする土質改良材。 Consisting of incinerated ash of paper sludge or wood, charcoal, paper, firewood, chaff and vegetation , Portland cement , fine powder of blast furnace slag , and gypsum ; and
The incinerated ash has a water absorption effect, and its ignition loss at 800 ° C. is less than 3%, and
Incineration ash in the above is 15 wt% to 60 wt% , and
The Portland cement in the above is 20 wt% to 60 wt% , the fine blast furnace slag powder in the above is 10 wt% to 40 wt% , and
The soil improvement material characterized by the above-mentioned gypsum being 10 weight% or less .
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| JP5800387B2 (en) * | 2011-09-16 | 2015-10-28 | 株式会社デイ・シイ | Soil improvement material |
| JP2018024767A (en) * | 2016-08-10 | 2018-02-15 | 株式会社ダイセキ環境ソリューション | Waste composition for soil modification and ground improving material using the same |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11319894A (en) * | 1998-05-18 | 1999-11-24 | Denki Kagaku Kogyo Kk | Solidifier for sludge, molded part using this and solidification process thereof |
| JP2002088362A (en) * | 2000-09-14 | 2002-03-27 | Sueo Wada | Setting agent for soil |
| JP2004067399A (en) * | 2002-08-01 | 2004-03-04 | Kochi Recycle Center:Kk | Method of producing regenerated sand from construction sludge |
| JP2005336232A (en) * | 2004-05-24 | 2005-12-08 | Shokudai Hanbai Kk | Soil solidification agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11319894A (en) * | 1998-05-18 | 1999-11-24 | Denki Kagaku Kogyo Kk | Solidifier for sludge, molded part using this and solidification process thereof |
| JP2002088362A (en) * | 2000-09-14 | 2002-03-27 | Sueo Wada | Setting agent for soil |
| JP2004067399A (en) * | 2002-08-01 | 2004-03-04 | Kochi Recycle Center:Kk | Method of producing regenerated sand from construction sludge |
| JP2005336232A (en) * | 2004-05-24 | 2005-12-08 | Shokudai Hanbai Kk | Soil solidification agent |
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