JPH11292599A - Cement based cured body - Google Patents

Cement based cured body

Info

Publication number
JPH11292599A
JPH11292599A JP9306398A JP9306398A JPH11292599A JP H11292599 A JPH11292599 A JP H11292599A JP 9306398 A JP9306398 A JP 9306398A JP 9306398 A JP9306398 A JP 9306398A JP H11292599 A JPH11292599 A JP H11292599A
Authority
JP
Japan
Prior art keywords
cement
concrete
hardened
based cured
mortar
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.)
Pending
Application number
JP9306398A
Other languages
Japanese (ja)
Inventor
Takayoshi Hirata
隆祥 平田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Obayashi Corp
Original Assignee
Obayashi Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Obayashi Corp filed Critical Obayashi Corp
Priority to JP9306398A priority Critical patent/JPH11292599A/en
Publication of JPH11292599A publication Critical patent/JPH11292599A/en
Pending legal-status Critical Current

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
    • 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
    • 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
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • 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
    • 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
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

PROBLEM TO BE SOLVED: To effectively use an industrial waste. SOLUTION: An off-specification admixture such as coal ash and fly ash and subject material to be wasted such as concrete mass is mixed so that a long-term compression strength of the cement based cured body may be 0.5-3.0 N/mm<2> . The cement-based cured body can be used as a sand substitutive material such as water-impermeable banking material, back-filling material, roadbed material, potting material, ground improving material, water shielding material, pipe protecting material and impact absorbing material.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】この発明は、セメント系硬化
体に関し、特に、産業廃棄物の対象となっている廃棄材
の有効利用を図る技術に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hardened cement material, and more particularly to a technique for effectively utilizing waste materials that are subject to industrial waste.

【０００２】[0002]

【従来の技術】現在、建築構造物のスクラップアンドビ
ルドに伴って発生する土木，建設系の産業廃棄物のう
ち、構造物の破砕などによってコンクリート塊が大量に
発生している。2. Description of the Related Art At present, large amounts of concrete lumps are generated due to crushing of structures among civil engineering and construction-related industrial wastes generated by scrap and build of building structures.

【０００３】この種のコンクリート塊は、そのままコン
クリートの骨材として使用すると、強度が低下したり、
品質のバラツキが多くなるなどの不都合が有り、現状で
は、コンクリート躯体にそのまま使用される例はない。[0003] When this kind of concrete mass is used as it is as an aggregate of concrete, the strength is reduced,
There are inconveniences such as increased variation in quality, and at present, there is no example that the concrete body is used as it is.

【０００４】また、この種のコンクリート塊について
は、さらに破砕して、コンクリート骨材として利用する
ことや、破砕したコンクリートからペースト分を取り除
く処理を行って、粗骨材として再利用することなどが試
みられている。[0004] In addition, this kind of concrete lump can be further crushed and used as a concrete aggregate, or a process of removing a paste component from the crushed concrete and reused as a coarse aggregate can be performed. Attempted.

【０００５】ところが、このような従来のコンクリート
塊の再利用方法には、以下に説明する問題があった。[0005] However, such a conventional method of recycling concrete blocks has the following problems.

【０００６】[0006]

【発明が解決しようとする課題】すなわち、前述した如
きコンクリート塊の再利用方法は、再利用するための処
理に手間と時間がかかるだけでなく、コンクリートの構
成材料に再利用することができたとしても、施工および
品質管理が難しく、却ってコスト高になるなどの問題が
あり、その殆どが埋め立て処理となっているのが実状で
ある。That is, the method for recycling concrete blocks as described above not only requires time and effort for the process of recycling, but also can be reused as a concrete constituent material. However, there are problems such as difficulty in construction and quality control and increase in cost, and most of them are landfills.

【０００７】一方、火力発電所の煙道など捕集される石
炭灰やフライアッシュなどは、その一部がコンクリート
の混和材として利用されているが、この利用には、制限
があって、規格外品が大量に発生する。[0007] On the other hand, coal ash and fly ash collected in the flue of a thermal power plant are partially used as an admixture for concrete. Large quantities of foreign goods are generated.

【０００８】このような規格外品は、未燃カーボンが含
まれていて、そのままコンクリートに使用すると、ＡＥ
減水剤の悪影響を及ぼすため、その使用が敬遠されてい
る。[0008] Such a nonstandard product contains unburned carbon, and if used as it is for concrete, AE
The use of water reducers has been avoided because of their adverse effects.

【０００９】このような規格外品は、有効な利用方法が
確立されていないので、コンクリート塊と同様に、その
殆どが埋め立て処理にとなっているのが実状である
。[0009] Since an effective use method of such a nonstandard product has not been established, almost all of the nonstandard product is landfilled like a concrete lump.
.

【００１０】本発明は、このような実状に鑑みてなされ
たものであって、その目的とするところは、コンクリー
ト塊や規格外の石炭灰，フライアッシュなどの混和材を
産業廃棄物とすることなく、有効に利用することができ
るセメント系硬化体を提供することにある。The present invention has been made in view of such circumstances, and an object of the present invention is to use concrete lumps, admixtures such as nonstandard coal ash and fly ash as industrial waste. It is another object of the present invention to provide a cement-based cured product that can be effectively used.

【００１１】[0011]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、不透水性盛土材，裏込材，路盤材，注入
材，地盤改良材，遮水材，配管保護材，衝撃吸収材など
の土砂代替材に使用するセメント系硬化体であって、前
記セメント系硬化体の長期圧縮強度が０．５〜３．０Ｎ
／ｍｍ2となるように、石炭灰，フライアッシュなどの
規格外混和材やコンクリート塊などの産業廃棄物対象材
を混入するようにした。このように構成したセメント系
硬化体は、不透水性盛土材，裏込材，路盤材，注入材，
地盤改良材，遮水材，配管保護材，衝撃吸収材などの土
砂代替材として有効利用することができる。本発明のセ
メント系硬化体は、長期圧縮強度が０．５〜３．０Ｎ／
ｍｍ2となるようにする。この理由は、長期圧縮強度が
０．５Ｎ／ｍｍ2未満になると、自立性がなくなり、例
えば、不透水性盛土材などに用いることができなくな
り、また、長期圧縮強度が３．０Ｎ／ｍｍ2を越える
と、例えば、地盤改良材として使用した場合に、従来の
土工用ブルドーザ，バックホーなどの掘削機械での掘削
が困難になるからである。また、本発明のセメント系硬
化体は、長期圧縮強度が０．５〜３．０Ｎ／ｍｍ2とな
るので、水に流れ難く、液状化対策にもなる。前記セメ
ント系硬化体のスランプフローは、１８ｃｍ以上にする
ことができる。この構成によると、例えば、裏込材，路
盤材，注入材として用いた場合に、締固めが不要にな
る。前記セメント系硬化体は、セメントペースト，モル
タル，コンクリートの形態のいずれか１つから選択する
ことができる。前記セメント系硬化体は、前記セメント
ペースト，モルタル，コンクリートの構成材料として、
塩素を含有したセメントを用いることができる。この構
成を採用すると、従来産業廃棄物として処分されていた
塩素含有セメントの有効利用が図れ、リサイクル率をよ
り一層高めることができる。In order to achieve the above object, the present invention relates to an impermeable embankment material, a backing material, a roadbed material, an injection material, a ground improvement material, a water barrier material, a pipe protection material, A cement-based hardened material used as a substitute for earth and sand, such as an absorbent, wherein the long-term compressive strength of the cement-based hardened material is 0.5 to 3.0 N.
/ Mm 2 , non-standard admixtures such as coal ash and fly ash, and materials for industrial waste such as concrete lumps were mixed. The cement-based hardened material thus configured is made of impermeable embankment material, backing material, roadbed material, injection material,
It can be effectively used as a substitute for earth and sand such as ground improvement materials, water barrier materials, pipe protection materials, and shock absorbers. The cement-based cured product of the present invention has a long-term compressive strength of 0.5 to 3.0 N /.
mm 2 . The reason for this is that if the long-term compressive strength is less than 0.5 N / mm 2, it will not be self-supporting and cannot be used, for example, as an impermeable embankment material, and the long-term compressive strength will be 3.0 N / mm 2. Exceeding the above limits, for example, when used as a ground improvement material, it becomes difficult to excavate with a conventional excavating machine such as a bulldozer for earthwork and a backhoe. In addition, the cement-based cured product of the present invention has a long-term compressive strength of 0.5 to 3.0 N / mm 2 , so that it hardly flows into water and is a measure against liquefaction. The slump flow of the cement-based cured product can be set to 18 cm or more. According to this configuration, for example, when used as a backing material, a roadbed material, or an injection material, compaction becomes unnecessary. The cement-based hardened body can be selected from any one of cement paste, mortar, and concrete. The cement-based hardened material is used as a constituent material of the cement paste, mortar, and concrete.
A cement containing chlorine can be used. By adopting this configuration, the chlorine-containing cement that has been conventionally disposed of as industrial waste can be effectively used, and the recycling rate can be further increased.

【００１２】[0012]

【発明の実施の形態】以下、本発明の好適な実施の形態
について、詳細に説明する。以下に示した実施例は、本
発明をモルタルに適用した場合を示している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail. The following examples show a case where the present invention is applied to a mortar.

【００１３】実施例ａ モルタルの構成材料として、１ｍ3当たり、セメント
（比重３．１６、普通ポルトランドセメント）１６０ｋ
ｇ，水１３５ｋｇ，規格外フライアッシュ（規格外混和
材，比重２．２４）１３０ｋｇ，細骨材（比重２．６
２）６２０ｋｇを用い、混和剤（起泡剤）をセメント重
量に対して、１．８％添加して混練した。硬化したモル
タルの材齢２８日の圧縮強度は、０．５Ｎ／ｍｍ2であ
った。 Example a As a constituent material of the mortar, cement (specific gravity 3.16, ordinary Portland cement) 160 k per m 3
g, water 135 kg, non-standard fly ash (non-standard admixture, specific gravity 2.24) 130 kg, fine aggregate (specific gravity 2.6)
2) Using 620 kg, an admixture (foaming agent) was added and kneaded at 1.8% based on the weight of cement. The compressive strength of the cured mortar at the age of 28 days was 0.5 N / mm 2 .

【００１４】実施例ｂ モルタルの構成材料として、１ｍ3当たり、セメント
（比重３．１６、普通ポルトランドセメント）２７０ｋ
ｇ，水１５０ｋｇ，規格外フライアッシュ（規格外混和
材，比重２．２４）２３０ｋｇ，細骨材（比重２．６
２）１０５５ｋｇを用い、混和剤（起泡剤）をセメント
重量に対して、０．６％添加して混練した。硬化したモ
ルタルの材齢２８日の圧縮強度は、３．０Ｎ／ｍｍ2で
あった。 Example b As a constituent material of mortar, cement (specific gravity 3.16, ordinary Portland cement) 270 k per m 3
g, water 150 kg, non-standard fly ash (non-standard admixture, specific gravity 2.24) 230 kg, fine aggregate (specific gravity 2.6)
2) Using 1055 kg, an admixture (foaming agent) was added at 0.6% based on the weight of cement and kneaded. The compressive strength of the cured mortar at the age of 28 days was 3.0 N / mm 2 .

【００１５】上記角実施例の規格外フライアッシュは、
ＪＩＳ Ａ ６２０１に規定される要件を持たさないも
のであって、例えば、粒度分布，化学組成，水分量など
が要件から欠けているものであり、従来は、産業廃棄物
として埋め立て処分されていた。The non-standard fly ash of the above-mentioned corner embodiment is
It does not have the requirements specified in JIS A 6201, and for example, lacks the particle size distribution, chemical composition, moisture content, etc. from the requirements, and has conventionally been landfilled as industrial waste.

【００１６】以下の表に実施例ａ，ｂのモルタルの配合
比をまとめて示している。The following table summarizes the mixing ratios of the mortars of Examples a and b.

【表１】 [Table 1]

【００１７】実施例ａ，ｂのモルタルは、０．５ないし
は３．０Ｎ／ｍｍ2の長期圧縮強度を有していて、低強
度であるが、不透水性盛土材，裏込材，路盤材，注入
材，地盤改良材，遮水材，配管保護材，衝撃吸収材など
の土砂代替材として有効利用することができる。The mortars of Examples a and b have a long-term compressive strength of 0.5 to 3.0 N / mm 2 and are low in strength, but are impermeable to embankment material, backing material, and roadbed material. It can be effectively used as a substitute for earth and sand such as injection material, ground improvement material, water barrier material, pipe protection material, and shock absorber.

【００１８】実施例ａのモルタルは、材齢２８日の長期
圧縮強度が０．５Ｎ／ｍｍ2になっているので、自立性
を有していて、不透水性盛土材などに好適に用いること
ができる。The mortar of Example (a) has a long-term compressive strength of 0.5 N / mm 2 at the age of 28 days, so it has self-supporting properties and is suitable for use as an impermeable embankment material. Can be.

【００１９】また、実施例ｂのモルタルは、材齢２８日
の長期圧縮強度が３．０Ｎ／ｍｍ2になっているので、
地盤改良材と指定使用した場合に、従来の土工用ブルド
ーザ，バックホーなどの掘削機械での掘削が可能にな
る。The long-term compressive strength of the mortar of Example b at the age of 28 days is 3.0 N / mm 2 .
When designated as a ground improvement material, it becomes possible to excavate with a conventional excavating machine such as a bulldozer for earthwork and a backhoe.

【００２０】また、実施例ａ，ｂのモルタルは、長期圧
縮強度が０．５ないしは３．０Ｎ／ｍｍ2となっている
ので、水に流れ難く、液状化対策にもなる。Further, the mortars of Examples a and b have a long-term compressive strength of 0.5 to 3.0 N / mm 2 , so that they do not easily flow into water and are also a measure against liquefaction.

【００２１】実施例ａ，ｂのモルタルは、１８ｃｍ以上
にすることが望ましい。このようなスランプフロー値の
モルタルを用いると、例えば、裏込材，路盤材，注入材
として用いた場合に、締固めが不要になる。It is desirable that the mortar of the embodiments a and b is 18 cm or more. When mortar having such a slump flow value is used, for example, when it is used as a backing material, a roadbed material, or an injection material, compaction becomes unnecessary.

【００２２】なお、本発明の実施は、モルタルだけでな
く、セメントペーストやコンクリートの形態で使用する
ことができる。また、本発明で用いるセメントは、特に
制限はないが、塩素を含有したセメントを用いると、従
来産業廃棄物として処分されていた塩素含有セメントの
有効利用が図れ、リサイクル率をより一層高めることが
できる。The present invention can be used not only in mortar but also in the form of cement paste or concrete. In addition, the cement used in the present invention is not particularly limited, but when chlorine-containing cement is used, the chlorine-containing cement that has been conventionally disposed of as industrial waste can be effectively used, and the recycling rate can be further increased. it can.

【００２３】さらに、上記実施例で示した規格外フライ
アッシュは、石炭灰などの規格外混和材，コンクリート
塊に変えることができる。Further, the non-standard fly ash shown in the above embodiment can be changed to a non-standard admixture such as coal ash or a concrete lump.

【００２４】[0024]

【発明の効果】以上、詳細に説明したように、本発明に
かかるセメント系硬化体によれば、従来、埋め立て処分
されいた産業廃棄物を有効に利用することができる。As described above in detail, according to the cement-based cured product according to the present invention, industrial waste conventionally disposed of in landfill can be effectively used.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０４Ｂ 18:08 18:16） 111:20 Ｃ０９Ｋ 103:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C04B 18:08 18:16) 111: 20 C09K 103: 00

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 不透水性盛土材，裏込材，路盤材，注入
材，地盤改良材，遮水材，配管保護材，衝撃吸収材など
の土砂代替材に使用するセメント系硬化体であって、 前記セメント系硬化体の長期圧縮強度が０．５〜３．０
Ｎ／ｍｍ2となるように、石炭灰，フライアッシュなど
の規格外混和材やコンクリート塊などの産業廃棄物対象
材を混入することを特徴とするセメント系硬化体。1. A cement-based hardened material used as a substitute for earth and sand, such as an impermeable embankment material, a backing material, a roadbed material, an injection material, a ground improvement material, a water barrier material, a pipe protection material, and a shock absorbing material. And the long-term compressive strength of the cement-based cured product is 0.5 to 3.0.
A hardened cementitious material characterized by mixing nonstandard admixtures such as coal ash and fly ash and materials for industrial waste such as concrete lumps so as to be N / mm 2 . 【請求項２】 前記セメント系硬化体のスランプフロー
を１８ｃｍ以上にすることを特徴とする請求項１記載の
セメント系硬化体。2. The cement-based cured product according to claim 1, wherein the slump flow of the cement-based cured product is 18 cm or more. 【請求項３】 前記セメント系硬化体は、セメントペー
スト，モルタル，コンクリートの形態のいずれか１つか
ら選択されることを特徴とする請求項１または２記載の
セメント系硬化体。3. The hardened cementitious body according to claim 1, wherein the hardened cementitious body is selected from one of a cement paste, mortar, and concrete. 【請求項４】 前記セメント系硬化体は、前記セメント
ペースト，モルタル，コンクリートの構成材料として、
塩素を含有したセメントを用いることを特徴とする請求
項１〜３のいずれか１項に記載のセメント系硬化体。4. The cement-based hardened material is used as a constituent material of the cement paste, mortar, and concrete.
The cement-based hardened product according to any one of claims 1 to 3, wherein a cement containing chlorine is used.
JP9306398A 1998-04-06 1998-04-06 Cement based cured body Pending JPH11292599A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9306398A JPH11292599A (en) 1998-04-06 1998-04-06 Cement based cured body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9306398A JPH11292599A (en) 1998-04-06 1998-04-06 Cement based cured body

Publications (1)

Publication Number Publication Date
JPH11292599A true JPH11292599A (en) 1999-10-26

Family

ID=14072067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9306398A Pending JPH11292599A (en) 1998-04-06 1998-04-06 Cement based cured body

Country Status (1)

Country Link
JP (1) JPH11292599A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013081940A (en) * 2011-09-28 2013-05-09 Ohbayashi Corp Solidified body, secondary product, block for pedestrian deck, and manufacturing method of solidified body

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08100177A (en) * 1994-08-01 1996-04-16 Yawata Kouro Concrete Kk Construction and building composition for backfilling, etc.
JPH09118557A (en) * 1995-10-25 1997-05-06 Chichibu Onoda Cement Corp Back-filling material
JPH1025475A (en) * 1996-07-10 1998-01-27 Chichibu Onoda Cement Corp Sea-water resistant soil improvement material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08100177A (en) * 1994-08-01 1996-04-16 Yawata Kouro Concrete Kk Construction and building composition for backfilling, etc.
JPH09118557A (en) * 1995-10-25 1997-05-06 Chichibu Onoda Cement Corp Back-filling material
JPH1025475A (en) * 1996-07-10 1998-01-27 Chichibu Onoda Cement Corp Sea-water resistant soil improvement material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013081940A (en) * 2011-09-28 2013-05-09 Ohbayashi Corp Solidified body, secondary product, block for pedestrian deck, and manufacturing method of solidified body

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