JPH0656491A - Preparation of mortar and method for execution utilizing the same - Google Patents

Preparation of mortar and method for execution utilizing the same

Info

Publication number
JPH0656491A
JPH0656491A JP22802992A JP22802992A JPH0656491A JP H0656491 A JPH0656491 A JP H0656491A JP 22802992 A JP22802992 A JP 22802992A JP 22802992 A JP22802992 A JP 22802992A JP H0656491 A JPH0656491 A JP H0656491A
Authority
JP
Japan
Prior art keywords
slurry
mortar
powder
water
amount
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
JP22802992A
Other languages
Japanese (ja)
Inventor
Hitoshi Ishizaki
仁 石崎
Masahiro Yoshihara
正博 吉原
Yasushi Omodaka
安志 面高
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.)
Sumitomo Cement Co Ltd
Original Assignee
Sumitomo Cement Co Ltd
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 Sumitomo Cement Co Ltd filed Critical Sumitomo Cement Co Ltd
Priority to JP22802992A priority Critical patent/JPH0656491A/en
Publication of JPH0656491A publication Critical patent/JPH0656491A/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
    • C04B18/16—Waste materials; Refuse from building or ceramic industry
    • C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
    • 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
    • C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
    • 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)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Bridges Or Land Bridges (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

PURPOSE:To improve the underwater separation resistance, strength and durability by mixing specific powder with water and a solidifying agent and providing the resultant slurry substance with fluidity. CONSTITUTION:Powder produced in crushing concrete is sieved to provide powder, having <=2mm maximum particle diameter and containing >=60wt.% particles having <=0.1mm particle diameter. Water in an amount of 60-200wt.% and a solidifying material such as normal Portland cement in an amount of <=30wt.% are then added to the resultant powder and the obtained mixture is kneaded in a mixer to afford a slurry. Bubbles, as necessary, are then mixed in the slurry to reduce the weight thereof or a viscosity improver such as hydroxyethyl methyl cellulose in an amount of 0.5-4kg based on 1m<3> product is mixed therein to produce the objective fluid mortar. The slurry, as necessary, is used for an execution method for filling the slurry in cavities of a structure foundation part produced by ground subsidence, using a lightweight banking material, refilling a ditch for installing an embedded pipe or back-filling a retaining wall or an abutment.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、コンクリート製品を再
利用に関し、より詳しくは、コンクリートを破砕したと
きに微粉末を収集して再利用する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the recycling of concrete products, and more particularly to a method for collecting and recycling fine powder when crushing concrete.

【０００２】[0002]

【従来の技術】近年、老朽化したコンクリート構造物を
破壊し、新規構造物を構築する時にコンクリート廃棄物
の処分が問題となってきている。ここ２〜３年前まで
は、産業廃棄物として処分するのが通常であったが、廃
棄物の処分地不足が深刻な社会的問題となっている。2. Description of the Related Art In recent years, disposal of concrete waste has become a problem when aging concrete structures are destroyed and new structures are constructed. Until the last few years, it was usual to dispose of it as industrial waste, but the shortage of waste disposal sites has become a serious social problem.

【０００３】最近はコンクリートを破砕し、そのコンク
リート塊を再利用する動きが見られる。すなわち、コン
クリート塊においても直径の大きなものは再生砕石とし
て、舗装路盤材、裏込材として利用する方法や、再生砂
として埋戻し材として使用する方法が考案されている。
しかしながら、コンクリートを破砕してコンクリート塊
を作製するとき、再生砂として利用するには小さすぎる
微粉末が発生する。この微粉末は、集塵機などにて集め
られるが、その用途は見当らない。Recently, there has been a movement to crush concrete and reuse the concrete block. That is, a method has been devised in which a concrete lump having a large diameter is used as a recycled crushed stone as a paving roadbed material or a backfill material, or as a backfill material as recycled sand.
However, when the concrete is crushed to produce a concrete block, fine powder which is too small to be used as recycled sand is generated. Although this fine powder is collected by a dust collector or the like, its use is not found.

【０００４】[0004]

【発明が解決しようとする課題】本発明の目的は、コン
クリート廃棄物から発生する粉末を有効利用して、良好
な特性を有するモルタルを工業的有利に調製する方法、
およびそのように調製されたモルタルの特性を活用した
工法を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to industrially advantageously prepare a mortar having good characteristics by effectively utilizing powder generated from concrete waste.
And to provide a construction method utilizing the characteristics of the mortar thus prepared.

【０００５】[0005]

【課題を解決するための手段】上記目的は、コンクリー
ト破砕時に発生する粉末であって、粒径０．１ｍｍ以下
のものが６０重量％以上を占め、且つ最大粒径が２ｍｍ
以下である粉末に水と固化材を混合してスラリー状にす
ることを特徴とする流動性を有するモルタルの調製方法
に達成される。Means for Solving the Problems The above object is a powder generated when concrete is crushed and having a particle size of 0.1 mm or less occupies 60% by weight or more and has a maximum particle size of 2 mm.
The following is a method for preparing a mortar having fluidity, which comprises mixing powder and water with a solidifying material to form a slurry.

【０００６】この調製方法において、所望により、スラ
リーに増粘剤を混入して水中分離抵抗性を付与すること
ができる。また、スラリーに気泡を混入して軽量化を図
ることができる。上記のように調製されたスラリーは、
地盤沈下によって生じた構築物基礎部分の空洞に充填す
る工法、軽量盛土工法、埋設管設置溝に埋戻す工法、お
よび擁壁または橋台に裏込する工法などに有利に利用さ
れる。In this preparation method, if desired, a thickener may be mixed into the slurry to impart resistance to separation in water. Further, it is possible to reduce the weight by mixing air bubbles in the slurry. The slurry prepared as above is
It is advantageously used for the method of filling the cavity of the foundation part of the structure caused by ground subsidence, the lightweight embankment method, the method of backfilling the buried pipe installation groove, and the method of backfilling the retaining wall or abutment.

【０００７】以下、本発明のモルタルの調製方法につい
て詳細に説明する。本発明においては、コンクリート破
砕時に発生する粉末を用いる。この粉末は、通常、コン
クリート構造物を解体するときに発生するコンクリート
廃棄物を粉砕し、ふるい分けして各種骨材を取出した残
りとして得られる。本発明においては、この粉末とし
て、粒径０．１ｍｍ以下のものが６０重量％以上を占
め、且つ最大粒径が２ｍｍ以下であるものを用いる。粒
径が０．１ｍｍ以下のものが６０重量％未満となった
り、または最大粒径が２ｍｍを超えるものが混在する
と、調製されるスラリーに材料分離が起って、スラリー
の均質性および取扱性が低下する。The method of preparing the mortar of the present invention will be described in detail below. In the present invention, powder generated when concrete is crushed is used. This powder is usually obtained as a residue obtained by crushing concrete waste generated when dismantling a concrete structure, sieving and extracting various aggregates. In the present invention, as the powder, one having a particle size of 0.1 mm or less occupies 60% by weight or more and a maximum particle size of 2 mm or less is used. If the particle size of less than 0.1 mm is less than 60% by weight, or if the maximum particle size exceeds 2 mm is mixed, material separation occurs in the prepared slurry, resulting in homogeneity and handleability of the slurry. Is reduced.

【０００８】コンクリート破砕物の粉末に混入する固化
材としては、一般に、普通ポルトランドセメント、高炉
セメント、および各種セメント系固化材（例えば、住友
セメント（株）製品“タフロック”）などが用いられ
る。固化材の使用量は、セメント破砕物粉末重量に基づ
き約３０重量％以下が好ましい。モルタルを調製するに
は、通常のミキサーを用いて、コンクリート破砕物粉末
と固化材と水を所定割合で混練し、単位体積重量にて調
製する。水の使用量は、一般にコンクリート破砕物重量
に基づき６０〜２００重量％の範囲である。As the solidifying material to be mixed with the powder of the crushed concrete, ordinary portland cement, blast furnace cement, and various cement-based solidifying materials (for example, "Tough Rock" manufactured by Sumitomo Cement Co., Ltd.) are used. The amount of the solidifying agent used is preferably about 30% by weight or less based on the weight of the crushed cement powder. To prepare a mortar, a crushed concrete powder, a solidifying material, and water are kneaded at a predetermined ratio using an ordinary mixer to prepare a unit volume weight. The amount of water used is generally in the range of 60 to 200% by weight based on the weight of the crushed concrete.

【０００９】本発明においては、従来、モルタルの主材
料として用いられていた砂に代替してコンクリート破砕
物粉末を用いるのであって、この粉末の利用により材料
分離を殆ど発生せず、密なモルタルを作製することがで
きる。なお、材料分離の発生をより一層完全に阻止する
目的で、モルタル作製に際し増粘剤を混入することがで
きる。増粘剤としては、ヒドロキシエチルメチルセルロ
ースのような水溶性セルロースが有利に用いられ、ま
た、増粘剤の使用量は製品１ｍ3 に対して０．５〜４ｋ
ｇが好ましい。また、モルタルの調製に際して、所望に
より、流動化剤、減水剤などの混和剤を混入することも
可能である。In the present invention, concrete crushed material powder is used in place of sand, which has been conventionally used as a main material for mortar, and the use of this powder hardly causes material separation, resulting in a dense mortar. Can be produced. A thickener may be mixed in the mortar preparation for the purpose of completely preventing the occurrence of material separation. Water-soluble cellulose such as hydroxyethylmethyl cellulose is advantageously used as the thickener, and the amount of the thickener used is 0.5 to 4 k per 1 m 3 of the product.
g is preferred. When preparing the mortar, it is possible to mix an admixture such as a fluidizing agent and a water reducing agent, if desired.

【００１０】コンクリート破砕物粉末を用いて上記のよ
うに調製されたモルタルは、材料分離を発生せず、密な
ものとすることができるため、強度および耐久性に優れ
た固化物を得ることができる。調製されたモルタルの代
表的応用例としては、地盤沈下によって生じた構築物基
礎部分の空洞に充填する工法、通路の拡幅などに適用さ
れる軽量盛土工法、埋設管設置溝などへの埋戻す工法、
および擁壁や橋台に裏込する工法などがあげられる。The mortar prepared as described above using the crushed concrete powder does not cause material separation and can be made dense, so that a solidified product excellent in strength and durability can be obtained. it can. Typical application examples of the prepared mortar include a method of filling the cavity of the building foundation part caused by ground subsidence, a lightweight embankment method applied to widening of passages, a method of backfilling to buried pipe installation grooves, etc.
And the method of back-filling the retaining wall and abutment.

【００１１】地盤沈下などによって生じた空洞の充填、
橋台の裏込充填などに、本発明の方法により調製された
モルタルを使用する場合、モルタル中に気泡を混入する
ことによって軽量化を図ることが望ましい。気泡を混入
する手法としては、界面活性剤または動物蛋白質系の起
泡剤を用いて作製した稀釈液をプレフォーム形式にて発
泡せしめたものをモルタル中に混入する手法を採ること
ができる。Filling of cavities caused by ground subsidence,
When the mortar prepared by the method of the present invention is used for backfilling of abutments, it is desirable to reduce the weight by mixing air bubbles into the mortar. As a method of mixing bubbles, a method of foaming a diluting solution prepared by using a surfactant or an animal protein-based foaming agent in a preform format and mixing it in a mortar can be adopted.

【００１２】従来のエアモルタルの調製においては、モ
ルタル自身の単量が１．７ｆｔ／ｍ3 前後と重いので、
軽量化を図るにはかなりの空気量が必要であり、そのた
め流動性が低下することが明白である。一方、セメント
破砕物粉末を用いて調製したモルタルでは、単量が１．
４ｆｔ／ｍ3 程度であり、軽量化を図るときの気泡量が
少なくて済む。従って、流動性を阻害することなく軽量
化を図ることができる。また、従来のエアモルタルで
は、現場にて、砂とセメントと水を混練しなければなら
なかったが、セメント破砕物の粉末を用いる場合、一定
の比率で混合した粉状組成物を出荷し、施工現場にて水
と混練するだけでモルタルが作製可能となり、プロセス
の省略化が可能となる。In the conventional preparation of air mortar, the unit amount of mortar itself is as heavy as about 1.7 ft / m 3 ,
It is clear that a considerable amount of air is required to achieve weight reduction, which reduces fluidity. On the other hand, in the mortar prepared by using the crushed cement powder, the unit amount is 1.
Since it is about 4 ft / m 3 , the amount of bubbles required for weight reduction is small. Therefore, the weight can be reduced without impeding the fluidity. Further, in the conventional air mortar, it was necessary to knead sand, cement, and water at the site, but when using powder of a crushed cement product, a powdery composition mixed at a fixed ratio was shipped, The mortar can be produced simply by kneading with water at the construction site, and the process can be omitted.

【００１３】[0013]

【実施例】次に、実施例について、本発明のモルタル調
製方法およびモルタルを利用する工法を具体的に説明す
る。実施例１ （モルタルの調製） コンクリート廃棄物をジョークラッシャーを用いて破砕
し、破砕物から骨材を除き、目開き０．１ｍｍのふるい
を用いて微粉部分を取出した。ミキサーにて、この粉末
と水と固化材（普通ポルトランドセメント）とを表１に
示す割合で混ぜ、流動性のあるスラリー状モルタルを得
た。このモルタルの特性を測定したところ、表１に示す
結果が得られた。EXAMPLES Next, with reference to Examples, the mortar preparation method of the present invention and the method of using the mortar will be specifically described. Example 1 (Preparation of mortar) A concrete waste was crushed using a jaw crusher, aggregate was removed from the crushed material, and a fine powder portion was taken out using a sieve having an opening of 0.1 mm. This powder, water and a solidifying material (ordinary Portland cement) were mixed in a mixer at a ratio shown in Table 1 to obtain a fluid slurry mortar. When the characteristics of this mortar were measured, the results shown in Table 1 were obtained.

【００１４】[0014]

【表１】 [Table 1]

【００１５】表１において、微粉末／水重量比は、土で
いう含水比に相当する。減水剤（ナフタリンスルホン酸
・ホルマリン高縮合物）の量は固化材量に対する重量パ
ーセントである。フロー値はＰロートの流下時間であ
る。また、単量≒１ｔｆ／ｍ3においては気泡を混入し
ている。フロー値は土木学会基準「プレパックドコンク
リートの注入モルタルの流動性試験方法」に準拠し、ま
た、ブリージング率は土木学会基準「プレパックドコン
クリートの注入モルタルのブリージング率および膨張率
試験方法」に準拠して測定した。In Table 1, the fine powder / water weight ratio corresponds to the water content ratio in soil. The amount of the water-reducing agent (naphthalene sulfonic acid / formalin high-condensation product) is a weight percentage relative to the amount of the solidifying material. The flow value is the downflow time of the P funnel. Further, when the unit amount is ≈1 tf / m 3 , bubbles are mixed. The flow value complies with the Japan Society of Civil Engineers standard “Fluidity test method for injection mortar of prepacked concrete”, and the breathing rate complies with the Japan Society of Civil Engineers “Breazing rate and expansion coefficient test method for injection mortar of prepacked concrete”. Measured.

【００１６】実施例２（地盤沈下による空洞の充填工
法） 底面積８０ｍ2 のボックスカルバート下に平均１５ｃｍ
の地盤沈下が生じ、空洞が生じた。この空洞を充填する
ためにコンクリート塊微粉末を主成分とするエアモルタ
ルを充填した。カルバート内は水が流れているため、水
中分離抵抗性を有するものが要求された。充填量は１２
ｍ3 と少ないため、あらかじめセメントと微粉末を混合
したものを出荷した。混合比率はセメント：微粉末＝
１：５である。 Example 2 (Cavity filling method by subsidence of ground) 15 cm on average under a box culvert with a bottom area of 80 m 2.
Land subsidence occurred and a cavity was created. In order to fill this cavity, an air mortar containing fine powder of concrete as a main component was filled. Since water is flowing inside the culvert, one having resistance to separation in water was required. The filling amount is 12
Since it was as small as m 3 , we shipped a mixture of cement and fine powder in advance. Mixing ratio is cement: fine powder =
It is 1: 5.

【００１７】施工現場では、増粘剤（ヒドロキシエチル
メチルセルロース）を水で溶かしたものと混合し（水／
固形分混合比＝９２％）、その後気泡を混入して打設し
た。増粘剤量は、通常の水中不分離性コンクリートに比
べ、微粉末がかなりの粘性を有しているため、少量であ
った。なお、現場における品質管理試験結果は、以下の
とおりであった。 単位体積重量 １．１ｔｆ／ｍ3 Ｐロートの流下時間 １６秒 一軸圧縮強さ ２．５ｋｇｆ／ｃｍ2 （材令
２８日）At the construction site, a thickener (hydroxyethyl methyl cellulose) is mixed with water (water /
The solid content mixing ratio = 92%), and thereafter, air bubbles were mixed in and placed. The amount of the thickener was small compared to that of the normal underwater non-separable concrete because the fine powder has a considerable viscosity. The quality control test results at the site were as follows. Unit volume weight 1.1 tf / m 3 P funnel flow down time 16 seconds Uniaxial compressive strength 2.5 kgf / cm 2 (age 28 days)

【００１８】この施工を通じて、コンクリート塊の微粉
末を使用することの利点として、以下のことが挙げられ
る。 （１）微粉ゆえ、材料分離しにくく、水中分離抵抗性に
関しても従来のモルタルに比べて優れている。 （２）このような小規模現場においては、工場出荷時に
セメントと混合することにより、現場での施工手間を最
小限にすることが可能である。 （３）気泡を混入しても消泡させるような成分はなく、
安定した軽量材の作製が可能であった。The advantages of using the fine powder of concrete lumps through this construction are as follows. (1) Since it is a fine powder, it is difficult to separate the materials, and it is excellent in separation resistance in water as compared with the conventional mortar. (2) In such a small-scale site, by mixing with cement at the time of shipping from the factory, it is possible to minimize the construction labor on site. (3) There is no component that defoams even when air bubbles are mixed in,
It was possible to manufacture a stable lightweight material.

【００１９】[0019]

【発明の効果】（１）本発明の方法により、セメント破
砕物粉末を用いて調製されるモルタルは、材料分離を生
じ難く、良好な水中分離抵抗性を示す、また、このモル
タルは密なモルタルとすることができる。従って、この
モルタルの固化物は強度および耐久性に優る。EFFECT OF THE INVENTION (1) The mortar prepared by using the crushed cement powder according to the method of the present invention hardly causes material separation and exhibits good resistance to separation in water. Further, this mortar is a dense mortar. Can be Therefore, the solidified product of this mortar is superior in strength and durability.

【００２０】（２）セメント破砕物粉末とセメントのよ
うな固化材と混合物の形態で出荷し、施工現場で水と混
ぜ、モルタルを作製することができるので、特に小規模
施工現場に向き、また現場での施工手間を最小限にする
ことができる。(2) Crushed powder of cement, a solidifying material such as cement and a mixture thereof are shipped and mixed with water at a construction site to prepare a mortar, which is particularly suitable for a small-scale construction site. It is possible to minimize the on-site construction work.

【００２１】（３）本発明の方法により作製されるモル
タルの単量は１．４ｔｆ／ｍ3 程度であって、従来のモ
ルタルの単量１．７ｔｆ／ｍ3 と比較してかなり軽い。
従って、気泡を混入して軽量化を図る際、少量の気泡量
によって達成できるため、気泡量が少くてすみ、且つモ
ルタルの流動性が低下することもない。[0021] (3) a monomer of mortar produced by the method of the present invention is an order of 1.4tf / m 3, much lighter compared to monomeric 1.7tf / m 3 of conventional mortar.
Therefore, when the weight is reduced by mixing bubbles, it can be achieved by a small amount of bubbles, so that the amount of bubbles is small and the fluidity of the mortar does not deteriorate.

Claims (7)

【特許請求の範囲】[Claims] 【請求項１】 コンクリート破砕時に発生する粉末であ
って、粒径０．１ｍｍ以下のものが６０重量％以上を占
め、且つ最大粒径が２ｍｍ以下である粉末に水と固化材
を混合してスラリー状にすることを特徴とする流動性を
有するモルタルの調製方法。1. A powder generated when concrete is crushed, having a particle size of 0.1 mm or less occupying 60% by weight or more, and having a maximum particle size of 2 mm or less, by mixing water and a solidifying material. A method for preparing a mortar having fluidity, which comprises forming a slurry. 【請求項２】 スラリーに気泡を混入して軽量化を図る
請求項１記載のモルタルの調製方法。2. The method for preparing a mortar according to claim 1, wherein air bubbles are mixed into the slurry to reduce the weight. 【請求項３】 スラリーに増粘剤を混入して水中分離抵
抗性を付与する請求項１または請求項２に記載のモルタ
ルの調製方法。3. The method for preparing a mortar according to claim 1, wherein the slurry is mixed with a thickener to impart resistance to separation in water. 【請求項４】 請求項１、請求項２または請求項３に記
載の方法によって調製したスラリーを地盤沈下によって
生じた構築物基礎部分の空洞に充填することを特徴とす
る工法。4. A method for constructing a method, comprising filling a slurry prepared by the method according to claim 1, 2 or 3 into a cavity of a foundation portion of a structure caused by ground subsidence. 【請求項５】 請求項１、請求項２または請求項３に記
載の方法によって調製したスラリーを軽量盛土材として
用いることを特徴とする工法。5. A method of manufacturing, wherein the slurry prepared by the method according to claim 1, 2 or 3 is used as a lightweight embankment material. 【請求項６】 請求項１、請求項２または請求項３に記
載のスラリーを埋設管設置溝へ埋戻すことを特徴とする
工法。6. A method of constructing the slurry according to claim 1, 2, or 3 by backfilling the slurry into a buried pipe installation groove. 【請求項７】 請求項１、請求項２または請求項３に記
載のスラリーを擁壁または橋台の裏込に用いることを特
徴とする工法。7. A construction method, wherein the slurry according to claim 1, claim 2 or claim 3 is used for backfilling a retaining wall or an abutment.
JP22802992A 1992-08-04 1992-08-04 Preparation of mortar and method for execution utilizing the same Pending JPH0656491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22802992A JPH0656491A (en) 1992-08-04 1992-08-04 Preparation of mortar and method for execution utilizing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22802992A JPH0656491A (en) 1992-08-04 1992-08-04 Preparation of mortar and method for execution utilizing the same

Publications (1)

Publication Number Publication Date
JPH0656491A true JPH0656491A (en) 1994-03-01

Family

ID=16870087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22802992A Pending JPH0656491A (en) 1992-08-04 1992-08-04 Preparation of mortar and method for execution utilizing the same

Country Status (1)

Country Link
JP (1) JPH0656491A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009001466A (en) * 2007-06-25 2009-01-08 Ohbayashi Corp Method of manufacturing plastic grout material using regenerated fine powder
JP2019112259A (en) * 2017-12-22 2019-07-11 デンカ株式会社 Admixture for cavity filler, cavity filler, and method for its use

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009001466A (en) * 2007-06-25 2009-01-08 Ohbayashi Corp Method of manufacturing plastic grout material using regenerated fine powder
JP2019112259A (en) * 2017-12-22 2019-07-11 デンカ株式会社 Admixture for cavity filler, cavity filler, and method for its use

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