JP2000154526A - Ground improvement material and manufacture thereof - Google Patents
Ground improvement material and manufacture thereofInfo
- Publication number
- JP2000154526A JP2000154526A JP33097698A JP33097698A JP2000154526A JP 2000154526 A JP2000154526 A JP 2000154526A JP 33097698 A JP33097698 A JP 33097698A JP 33097698 A JP33097698 A JP 33097698A JP 2000154526 A JP2000154526 A JP 2000154526A
- Authority
- JP
- Japan
- Prior art keywords
- water
- parts
- weight
- coal ash
- pts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
-
- 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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は地盤改良材、すなわ
ち石炭灰を利用したドレーン材などとしての地盤改良材
およびその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground improvement material, that is, a ground improvement material as a drain material using coal ash and a method for producing the same.
【０００２】[0002]
【従来の技術】産業廃棄物としての石炭灰の発生量は年
間約７２０万トンであり、この量は年々増え続けてお
り、数年先には１，２００万トンにも達すると予想され
ている。この石炭灰のうち有効利用量は約７０％であ
り、残りの３０％は灰処分場に埋立処分されている。ま
た分野別の有効利用状況は、セメント分野が全体の６５
％を占めているが、将来にわたって現在の数量が利用さ
れるとは考えられない。また近年、埋立処分については
環境保全の観点から新規確保が困難になってきており、
新たな有効利用法の開発が急務になってきている。2. Description of the Related Art The amount of coal ash generated as industrial waste is about 7.2 million tons per year, and this amount is increasing year by year, and is expected to reach 12 million tons in a few years. I have. The effective use amount of this coal ash is about 70%, and the remaining 30% is landfilled at ash disposal sites. In addition, the effective utilization status by field is 65% for the cement field.
%, But it is unlikely that the current quantity will be used in the future. In recent years, it has become difficult to secure new landfills from the viewpoint of environmental conservation.
There is an urgent need to develop new effective use methods.
【０００３】[0003]
【発明が解決しようとする課題】一方、土木分野におい
ては海砂の採取が規制されつつあることから、サンドコ
ンパクション工法などの地盤改良に必要な良質砂の枯渇
が指摘されており、品質の悪化、改良コストの高騰にも
なっている。On the other hand, in the field of civil engineering, since the extraction of sea sand is being regulated, it has been pointed out that high-quality sand required for ground improvement such as a sand compaction method is depleted, resulting in deterioration of quality. , The cost of improvement is also rising.
【０００４】本発明は上記のような問題に鑑みてなされ
たものであり、その目的は、サンドドレーン工法などに
使用されるドレーン材などとしての地盤改良材およびそ
の製造方法を提供することである。The present invention has been made in view of the above problems, and an object of the present invention is to provide a ground improvement material as a drain material used in a sand drain construction method and the like, and a method of manufacturing the same. .
【０００５】[0005]
【課題を解決するための手段】以上の課題を解決するた
めの本発明の手段は、請求項１の発明が、石炭灰に、セ
メントと保水材と水とを加えて造粒した球状の固化造粒
物であることを特徴とする。また請求項２の発明が、石
炭灰に、セメントと二水石膏と保水材と水とを加えて造
粒した球状の固化造粒物であることを特徴とする。また
請求項３の発明が、請求項１または２において、前記保
水材はベントナイトまたは粘性土であることを特徴とす
る。また請求項４の発明が、請求項１、２、３のいずれ
かにおいて、前記固化造粒物はドレーン材またはコンパ
クション材または排水用敷砂として使用されることを特
徴とする。また請求項５の発明が、石炭灰８５〜９３重
量部に、硬化材７〜１５重量部と、保水材２〜３重量部
と、水２０〜２５重量部を加えて高速混合して造粒した
後、常温養生して球状の固化造粒物とすることを特徴と
する。また請求項６の発明が、石炭灰８５〜９３重量部
に、セメント７〜１５重量部と、二水石膏７〜１０重量
部と、保水材２〜３重量部と、水２０〜２５重量部を加
えて高速混合して造粒した後、常温養生して球状の固化
造粒物とすることを特徴とする。また請求項７の発明
が、請求項５または６において、前記保水材はベントナ
イトまたは粘性土であることを特徴とする。Means for Solving the Problems The means of the present invention for solving the above-mentioned problems is that the invention of claim 1 is a method of adding a cement, a water retention material and water to coal ash to form a spherical solidified material. It is a granulated material. Further, the invention of claim 2 is characterized in that it is a spherical solidified granulated product obtained by adding cement, dihydrate gypsum, a water retention material and water to coal ash and granulating. The invention of claim 3 is characterized in that, in claim 1 or 2, the water retention material is bentonite or cohesive soil. A fourth aspect of the present invention is characterized in that, in any one of the first, second and third aspects, the solidified granules are used as a drain material, a compaction material, or sand for drainage. The invention according to claim 5 is characterized in that granulation is performed by adding 7 to 15 parts by weight of a hardening material, 2 to 3 parts by weight of a water retention material, and 20 to 25 parts by weight of water to 85 to 93 parts by weight of coal ash and mixing at high speed. And then cured at room temperature to form spherical solidified granules. The invention according to claim 6 is characterized in that 85 to 93 parts by weight of coal ash, 7 to 15 parts by weight of cement, 7 to 10 parts by weight of gypsum dihydrate, 2 to 3 parts by weight of water retention material, and 20 to 25 parts by weight of water Is added, and the mixture is granulated by high-speed mixing and then cured at room temperature to obtain a spherical solidified granule. The invention of claim 7 is characterized in that, in claim 5 or 6, the water retention material is bentonite or cohesive soil.
【０００６】[0006]
【発明の実施の形態】本発明の地盤改良材は、石炭灰に
セメントと保水材と水、または石炭灰にセメントと二水
石膏と保水材と水とを加えて造粒した球状の固化造粒物
である。前記石炭灰は下記の表１に示す材料特性を備え
たものである。BEST MODE FOR CARRYING OUT THE INVENTION The ground improvement material of the present invention is a spherical solidified product obtained by adding coal, cement, water retaining material, and water to coal ash or adding cement, dihydrate gypsum, water retaining material, and water to coal ash. Granules. The coal ash has the material properties shown in Table 1 below.
【０００７】[0007]
【表１】 [Table 1]
【０００８】このように従来の石炭灰とセメントのみの
配合では、石炭灰の保水性が低いために安定した固化造
粒物の製造が困難であったので、硬化材としてセメント
またはセメントと二水石膏、保水材としてはベントナイ
トまたは粘性土を使用することにより安定した固化造粒
物の製造が可能となった。As described above, in the conventional blend of coal ash and cement alone, it was difficult to produce a stable solidified granulated product due to the low water retention of coal ash. By using bentonite or cohesive soil as a gypsum and a water retention material, a stable solidified granule can be produced.
【０００９】この固化造粒物の粒度は２〜１０ｍｍの範
囲で均一性を保持しており、シルト分以下に相当する粒
度は含まれない。また圧潰強度は２８日強度で２０ｋｇ
ｆ／ｃｍ2以上である。さらに固化造粒物を５層に分
け、各層１１３回突固めた後の透水係数は砂と同程度で
ある。The solidified granules maintain uniformity in the particle size range of 2 to 10 mm, and do not include a particle size equivalent to a silt content or less. The crushing strength is 20 kg at 28 days strength.
f / cm 2 or more. Further, the solidified granulated material is divided into five layers, and the hydraulic conductivity after compaction of each layer 113 times is about the same as that of sand.
【００１０】したがって、上記の地盤改良材をドレーン
材またはコンパクション材または排水用敷砂として十分
に使用することができる。Therefore, the above-mentioned ground improvement material can be sufficiently used as a drain material, a compaction material, or a sand for drainage.
【００１１】また、配合割合において石炭灰が８５重量
部未満の場合は、高速回転ミキサの出口の造粒物貯蔵槽
内で造粒物が付着して固まり取り扱いが困難になり、９
３重量部を越えると強度が足りなくなる。また、硬化材
が７重量部未満の場合は強度が足りなくなり、１５重量
部を越えると高速回転ミキサの出口の造粒物貯蔵槽内で
造粒物が付着して固まって取り扱いが困難になる。ま
た、ベントナイトが２重量部未満の場合は造粒が不安定
となり、３重量部を越えると高速回転ミキサの出口の造
粒物貯蔵槽内で造粒物が付着して固まり取り扱いが困難
になる。さらに、水が２０重量部未満の場合は目的とす
る形状にならず、２５重量部を越えると必要な強度に達
しない。If the content of coal ash is less than 85 parts by weight, the granules adhere in the granule storage tank at the outlet of the high-speed rotary mixer and become hard to handle.
If it exceeds 3 parts by weight, the strength becomes insufficient. If the amount of the hardening agent is less than 7 parts by weight, the strength becomes insufficient. If the amount exceeds 15 parts by weight, the granules adhere and solidify in the granule storage tank at the outlet of the high-speed rotary mixer, making it difficult to handle. . If the amount of bentonite is less than 2 parts by weight, the granulation becomes unstable, and if it exceeds 3 parts by weight, the granules adhere in the granule storage tank at the outlet of the high-speed rotary mixer, and the granulation hardens and handling becomes difficult. . Further, if the amount of water is less than 20 parts by weight, the desired shape is not obtained. If the amount of water exceeds 25 parts by weight, the required strength is not reached.
【００１２】したがって、前記の配合割合は固化造粒物
の粒度、圧潰強度、透水係数の面から、石炭灰９０重量
部に、セメント１０重量部と、保水材３重量部と、水２
０重量部が最適となる。[0012] Therefore, the mixing ratio is determined from the viewpoint of the particle size, crushing strength, and water permeability of the solidified granules, 90 parts by weight of coal ash, 10 parts by weight of cement, 3 parts by weight of water retention material, and 2 parts of water.
0 parts by weight is optimal.
【００１３】また、上記のものに二水石膏を加えた地盤
改良材は、二水石膏が７重量部未満の場合はセメントの
量が増えるため非経済的となり、１０重量部を越えると
次第に造粒が不安定になる。[0013] In addition, a soil improvement material obtained by adding gypsum to the above-mentioned material is uneconomic because the amount of cement increases when gypsum is less than 7 parts by weight, and becomes uneconomical when gypsum exceeds 10 parts by weight. Grains become unstable.
【００１４】したがって、前記の配合割合は固化造粒物
の粒度、圧潰強度、透水係数の面から、石炭灰９３重量
部に、セメント７重量部と、二水石膏１０重量部と、保
水材２重量部と、水２１．２重量部が最適となる。Therefore, the above mixing ratio is determined from the viewpoint of the particle size, crushing strength, and water permeability of the solidified granules, 93 parts by weight of coal ash, 7 parts by weight of cement, 10 parts by weight of gypsum dihydrate, and water retaining material 2 Parts by weight and 21.2 parts by weight of water are optimal.
【００１５】これらの混合造粒は、図１に示す高速回転
ミキサ１で行われる。この高速回転ミキサ１は円筒混合
ドラム２（以下ドラム）の主軸３に設けた攪拌羽根４
と、独立駆動チョッパー（以下チョッパー）５とから構
成され、前記攪拌羽根４を８３ｒｐｍで５〜６分間高速
回転させるとともに、チョッパー５を１,５００ｒｐｍ
で５〜６分間高速回転させて粒度が２〜１０ｍｍの球状
の造粒物を形成する。The mixing and granulation are performed by a high-speed rotary mixer 1 shown in FIG. The high-speed rotating mixer 1 includes a stirring blade 4 provided on a main shaft 3 of a cylindrical mixing drum 2 (hereinafter, drum).
And an independently driven chopper (hereinafter referred to as a chopper) 5. The stirring blade 4 is rotated at a high speed of 83 rpm for 5 to 6 minutes, and the chopper 5 is rotated at 1,500 rpm.
At a high speed for 5 to 6 minutes to form spherical granules having a particle size of 2 to 10 mm.
【００１６】このように形成された造粒物をドラム２の
中から取り出して、２０℃の温度で２８日間乾燥させる
と、圧潰強度が２０ｋｇｆ／ｃｍ2以上の固化造粒物を
得ることができる。When the granulated material thus formed is taken out of the drum 2 and dried at a temperature of 20 ° C. for 28 days, a solidified granulated material having a crushing strength of 20 kgf / cm 2 or more can be obtained. .
【００１７】[0017]
【実施例１】火力発電所のボイラーから排出された石炭
灰を使用して、石炭灰９０重量部と、普通ポルトランド
セメント１０重量部と、ベントナイト３重量部と、水２
１重量部とを前述の高速回転ミキサ１のドラム２内に投
入して、攪拌羽根４を８３ｒｐｍで５〜６分間高速回転
させるとともに、チョッパー５を１,５００ｒｐｍで５
〜６分間高速回転させて球状の造粒物を形成する。そし
て、この造粒を２０℃で２８日間養生して固化造粒物を
製造した。EXAMPLE 1 Using coal ash discharged from a boiler of a thermal power plant, 90 parts by weight of coal ash, 10 parts by weight of ordinary Portland cement, 3 parts by weight of bentonite, and 2 parts of water
1 part by weight is charged into the drum 2 of the above-described high-speed rotating mixer 1, the stirring blade 4 is rotated at a high speed of 83 rpm for 5 to 6 minutes, and the chopper 5 is rotated at 1,500 rpm for 5 minutes.
Spin at high speed for ~ 6 minutes to form spherical granules. Then, the granulation was cured at 20 ° C. for 28 days to produce a solidified granulation.
【００１８】[0018]
【実施例２】また、実施例１と同様の石炭灰を使用し
て、石炭灰８５重量部と、普通ポルトランドセメント１
５重量部と、ベントナイト３重量部と、水２１重量部と
を前述の高速回転ミキサ１のドラム５内に投入し、実施
例１と同じ方法で固化造粒物を製造した。Example 2 Further, using the same coal ash as in Example 1, 85 parts by weight of coal ash and ordinary Portland cement 1
5 parts by weight, 3 parts by weight of bentonite, and 21 parts by weight of water were charged into the drum 5 of the high-speed rotary mixer 1 described above, and a solidified granule was produced in the same manner as in Example 1.
【００１９】[0019]
【実施例３】また、実施例１と同様の石炭灰を使用し
て、石炭灰９０重量部と、普通ポルトランドセメント１
０重量部と、粘性土３重量部と、２１重量部とを前述の
高速回転ミキサ１のドラム５内に投入し、実施例１と同
じ方法で固化造粒物を製造した。Example 3 Using the same coal ash as in Example 1, 90 parts by weight of coal ash and ordinary Portland cement 1
0 parts by weight, 3 parts by weight of viscous soil, and 21 parts by weight were put into the drum 5 of the high-speed rotating mixer 1 described above, and a solidified granule was produced in the same manner as in Example 1.
【００２０】[0020]
【実施例４】また、実施例１と同様の石炭灰を使用し
て、石炭灰９３重量部と、普通ポルトランドセメント７
重量部と、二水石膏１０重量部と、ベントナイト２重量
部と、水２１,２重量部とを前述の高速回転ミキサ１の
ドラム５内に投入し、実施例１と同じ方法で固化造粒物
を製造した。Example 4 Also, using the same coal ash as in Example 1, 93 parts by weight of coal ash and ordinary Portland cement 7
Parts by weight, 10 parts by weight of gypsum dihydrate, 2 parts by weight of bentonite, and 21.2 parts by weight of water were put into the drum 5 of the high-speed rotating mixer 1 described above, and solidified and granulated in the same manner as in Example 1. Was manufactured.
【００２１】表２は上記のように実施例１〜４の固化造
粒物の物理特性、すなわち粒度、形状、スレーキング
率、透水係数および圧潰強度を示したものである。Table 2 shows the physical properties of the solidified granules of Examples 1 to 4 as described above, that is, the particle size, shape, slaking rate, water permeability and crushing strength.
【００２２】[0022]
【表２】 [Table 2]
【００２３】上記のように粒度は細粒分が少なく、ほと
んど２〜１０ｍｍの範囲に分布し、平均粒径は５ｍｍで
ある。またほぼ球形に形成されている。またスレーキン
グ率の算定は２０ｍｍふるいの通過分で評価した結果、
０,１１％ときわめて低い。また、透水係数は固化造粒
物を５層に分け、各層１１３回突固めた後のものであ
り、砂と同程度である。さらに圧潰強度は２１,０ｋｇ
ｆ／ｃｍ2であり、ドレーン材などとして満足するもの
である。このような結果から本願発明の下記の効果が達
成できることを確認できた。As described above, the particle size has a small amount of fine particles, and is distributed almost in the range of 2 to 10 mm, and the average particle size is 5 mm. Also, it is formed in a substantially spherical shape. In addition, the calculation of the slaking rate was evaluated by passing through a 20 mm sieve.
It is extremely low at 0.11%. The water permeability is obtained after the solidified granules are divided into 5 layers and each layer is compacted 113 times, and is about the same as sand. Furthermore, crushing strength is 21.0kg
f / cm 2, which is satisfactory as a drain material or the like. From these results, it was confirmed that the following effects of the present invention can be achieved.
【００２４】[0024]
【発明の効果】砂に代わってドレーン材、コンパクショ
ン材、排水用敷砂としての地盤改良材として十分に使用
することができる。The present invention can be sufficiently used as a ground improvement material as a drain material, a compaction material, and a drainage flooring sand in place of sand.
【００２５】砂に代わるドレーン材、コンパクション
材、排水用敷砂としての地盤改良材を製造することがで
きる。It is possible to produce a ground improvement material as a drain material, a compaction material, and a drainage flooring sand in place of sand.
【００２６】粒径が均一な固化造粒物を形成することが
できる。It is possible to form a solidified granule having a uniform particle size.
【図１】高速回転ミキサの斜視図である。FIG. 1 is a perspective view of a high-speed rotation mixer.
１ 高速回転ミキサ ２ ドラム ３ 主軸 ４ 攪拌羽根 ５ チョッパー DESCRIPTION OF SYMBOLS 1 High-speed rotation mixer 2 Drum 3 Main shaft 4 Stirrer blade 5 Chopper
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｃ０９Ｋ 103:00 (71)出願人 000000549 株式会社大林組 大阪府大阪市中央区北浜東４番33号 (71)出願人 000236610 不動建設株式会社 大阪府大阪市中央区平野町四丁目２番16号 (72)発明者 新谷 登 広島県広島市中区小町４−33 中国電力株 式会社内 (72)発明者 斉藤 直 広島県広島市中区小町４−33 中国電力株 式会社内 (72)発明者 車田 佳範 栃木県那須郡西那須野町四区町1534−１ 五洋建設株式会社技術研究所内 (72)発明者 名越 聖治 広島県広島市中区小町４−33 中国高圧コ ンクリート工業株式会社内 (72)発明者 内橋 正和 広島県広島市中区小町１−25 株式会社大 林組広島支店内 (72)発明者 山根 邦彦 広島県広島市中区袋町４−25 不動建設株 式会社内 Ｆターム(参考） 2D040 AB00 CA01 CA03 CA05 CB01 2D043 CA06 DA05 DA10 EA04 EA06 EA10 4H026 CA01 CA04 CA06 CB01 CB05──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) // C09K 103: 00 (71) Applicant 000000549 Obayashi Corporation Co., Ltd. 4-33 Kitahama Higashi, Chuo-ku, Osaka-shi, Osaka (71) Applicant 000236610 Fudo Construction Co., Ltd. 4-2-1, Hirano-cho, Chuo-ku, Osaka-shi, Osaka (72) Inventor Noboru Shintani 4-33 Komachi, Naka-ku, Hiroshima-shi, Hiroshima Prefecture Inside Chugoku Electric Power Company (72) Inventor Naoto Saito 4-33 Komachi, Naka-ku, Hiroshima-shi, Hiroshima Prefecture Within Chugoku Electric Power Co., Inc. (72) Inventor Yoshinori Kurumada 154-1, 4-ku-cho, Nishinasuno-cho, Nasu-gun, Tochigi Pref. ) Inventor Seiji Nagoshi 4-33 Komachi, Naka-ku, Hiroshima-shi, Hiroshima Prefecture Inside High-Pressure Concrete Industry Co., Ltd. (72) Inventor Masakazu Uchihashi 1-25, Komachi, Naka-ku, Hiroshima-shi, Hiroshima Obayashi Corporation Island Branch in (72) inventor Kunihiko Yamane Hiroshima Prefecture, medium-Hiroshima City District Fukuromachi 4-25 Fudokensetsu Co., Ltd. in the F-term (reference) 2D040 AB00 CA01 CA03 CA05 CB01 2D043 CA06 DA05 DA10 EA04 EA06 EA10 4H026 CA01 CA04 CA06 CB01 CB05
Claims (7)
えて造粒した球状の固化造粒物であることを特徴とする
地盤改良材。1. A ground improvement material characterized in that it is a spherical solidified and granulated product obtained by adding cement, a water retention material and water to coal ash.
と水とを加えて造粒した球状の固化造粒物であることを
特徴とする地盤改良材。2. A ground improvement material characterized by being a spherical solidified and granulated product obtained by adding cement, dihydrate gypsum, a water retention material, and water to coal ash.
であることを特徴とする請求項１または２に記載の地盤
改良材。3. The soil improvement material according to claim 1, wherein the water retention material is bentonite or cohesive soil.
パクション材または排水用敷砂として使用されることを
特徴とする請求項１、２、３のいずれかに記載の地盤改
良材。4. The ground improvement material according to claim 1, wherein the solidified granules are used as a drain material, a compaction material, or a sand for drainage.
１５重量部と、保水材２〜３重量部と、水２０〜２５重
量部を加えて高速混合して造粒した後、常温養生して球
状の固化造粒物とすることを特徴とする地盤改良材の製
造方法。5. A hardening material of 7 to 85 to 93 parts by weight of coal ash.
Ground obtained by adding 15 parts by weight, 2 to 3 parts by weight of a water retention material, and 20 to 25 parts by weight of water, mixing at a high speed, granulating, and curing at room temperature to obtain a spherical solidified granulated material. Manufacturing method of the improved material.
〜１５重量部と、二水石膏７〜１０重量部と、保水材２
〜３重量部と、水２０〜２５重量部を加えて高速混合し
て造粒した後、常温養生して球状の固化造粒物とするこ
とを特徴とする地盤改良材の製造方法。6. A cement 7 containing 85 to 93 parts by weight of coal ash.
~ 15 parts by weight, gypsum dihydrate 7 ~ 10 parts by weight, water retention material 2
A method for producing a ground improvement material, comprising adding 3 to 3 parts by weight of water and 20 to 25 parts by weight of water, mixing at a high speed, granulating the mixture, and curing it at room temperature to obtain a spherical solidified granulated product.
であることを特徴とする請求項５または６に記載の地盤
改良材の製造方法。7. The method according to claim 5, wherein the water retaining material is bentonite or clayey soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33097698A JP3695968B2 (en) | 1998-11-20 | 1998-11-20 | Ground improvement material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33097698A JP3695968B2 (en) | 1998-11-20 | 1998-11-20 | Ground improvement material and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000154526A true JP2000154526A (en) | 2000-06-06 |
| JP3695968B2 JP3695968B2 (en) | 2005-09-14 |
Family
ID=18238460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33097698A Expired - Fee Related JP3695968B2 (en) | 1998-11-20 | 1998-11-20 | Ground improvement material and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3695968B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011173100A (en) * | 2010-02-25 | 2011-09-08 | Chugoku Electric Power Co Inc:The | Granular material for water purification and water purification method |
| JP2017088457A (en) * | 2015-11-12 | 2017-05-25 | 恵和興業株式会社 | Aged ash granulation product, and subbase course material or embankment material based on this granulation product |
| JP2018012779A (en) * | 2016-07-21 | 2018-01-25 | 中国電力株式会社 | Soil conditioner and method for producing the same, and soil improving method |
-
1998
- 1998-11-20 JP JP33097698A patent/JP3695968B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011173100A (en) * | 2010-02-25 | 2011-09-08 | Chugoku Electric Power Co Inc:The | Granular material for water purification and water purification method |
| JP2017088457A (en) * | 2015-11-12 | 2017-05-25 | 恵和興業株式会社 | Aged ash granulation product, and subbase course material or embankment material based on this granulation product |
| JP2018012779A (en) * | 2016-07-21 | 2018-01-25 | 中国電力株式会社 | Soil conditioner and method for producing the same, and soil improving method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3695968B2 (en) | 2005-09-14 |
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