JPH11100250A - Lightweight void filler and quick void filling method using the same - Google Patents
Lightweight void filler and quick void filling method using the sameInfo
- Publication number
- JPH11100250A JPH11100250A JP26317897A JP26317897A JPH11100250A JP H11100250 A JPH11100250 A JP H11100250A JP 26317897 A JP26317897 A JP 26317897A JP 26317897 A JP26317897 A JP 26317897A JP H11100250 A JPH11100250 A JP H11100250A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- lightweight
- parts
- quick
- setting
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed 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)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、土木、建築分野で
使用される軽量空隙充填材及びそれを用いた急速空隙充
填方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight void filling material used in the fields of civil engineering and construction and a rapid void filling method using the same.
【０００２】[0002]
【従来の技術とその課題】従来、軽量空隙充填材料は、
軽量で、その硬化物が低強度である面から、地下やトン
ネル背面の空隙、盛土、及び暗渠等の埋め戻し材等に使
用されている。この軽量空隙充填材料を製造する方法と
しては、モルタルミキサ中でセメント、水、及び起泡剤
を激しく攪拌し、空気をモルタル中に巻き込んで分散さ
せる方法等があげられ、現場で発泡させるため輸送コス
トがかからず、作業性も良好であることから多く使用さ
れている（特開平 9− 77546号公報、裏込め注入工法の
設計と施工 1990年６月10日 山海堂出版）。2. Description of the Related Art Conventionally, lightweight gap filling materials have been
Since it is lightweight and its cured product has low strength, it is used as a backfill material for underground and tunnel back spaces, embankments, culverts and the like. As a method for producing this lightweight void filling material, there is a method of vigorously stirring cement, water, and a foaming agent in a mortar mixer, and entraining and dispersing air in the mortar. It is widely used because of low cost and good workability (Japanese Unexamined Patent Publication No. 9-77546, design and construction of backfill injection method, Sankaido Publishing, June 10, 1990).
【０００３】一方、水が存在する場所に施工する場合等
は、気泡が脱泡して安定した気泡モルタルが得られなか
ったため、凝結剤を用いた裏込充填材が提案されている
（特開昭57−143098号公報）。しかしながら、この裏込
充填材は強度発現が遅いために、施工高さが１ｍ以上と
深い場所や側圧が加わる構造に施工する場合などは、施
工中に気泡が押しつぶされたり、自重により圧密にな
り、軽量にならないなどの課題があった。このため、超
速硬性気泡モルタルを用いる方法が提案されている（特
開平 5−112911号公報）。しかしながら、この方法では
凝結調節が困難で、充填中に気泡が押しつぶされ軽量に
ならなかったり、急速硬化のため超速硬性気泡モルタル
が配管に詰まって長距離圧送ができなかったりして充分
な施工ができないという課題があった。[0003] On the other hand, in the case of construction in a place where water is present, bubbles are defoamed and a stable foam mortar cannot be obtained. No. 57-143098). However, since this backfill material has a low strength, when it is applied to a place with a construction height of 1 m or more, or in a structure where lateral pressure is applied, bubbles are crushed during the construction or the material becomes compacted due to its own weight. There were problems such as not being lightweight. For this reason, a method using an ultra-fast-setting cellular mortar has been proposed (JP-A-5-112911). However, with this method, it is difficult to control the setting, and the foam is crushed during filling and the weight does not become light.Also, because of the rapid curing, the ultra-fast-hardening foam mortar is clogged in the piping and it is not possible to perform long-distance pumping, so sufficient construction is possible. There was a problem that could not be done.
【０００４】本発明者は、前記課題を解決すべく種々検
討を重ねた結果、気泡を含有してなる軽量モルタル、凝
結促進剤、及び急結材を別々に送給し、合流混合しなが
ら施工することによって、凝結の調節が容易で、強度発
現性の良好な軽量空隙充填材を効率良く製造でき、この
軽量空隙充填材を用いることによって、速やかな施工や
長距離施工が可能となり、比重 1.2未満の軽量硬化物が
得られ、自重が小さく、土の代替にもできるなどの知見
を得て本発明を完成するに至ったThe inventor of the present invention has conducted various studies in order to solve the above-mentioned problems. As a result, the lightweight mortar containing the air bubbles, the setting accelerator and the quick-setting material are separately fed, and the construction is carried out while being mixed and mixed. By doing so, it is possible to efficiently produce a light-weight void-filling material that is easy to adjust the setting and has good strength development, and by using this lightweight void-filling material, rapid construction and long-distance construction can be performed, resulting in a specific gravity of 1.2. The present invention was completed with the knowledge that a light-weight cured product of less than was obtained, its own weight was small, and it could be used as a substitute for soil.
【０００５】[0005]
【課題を解決するための手段】即ち、本発明は、気泡を
含有してなる軽量モルタル、凝結促進剤、及び急結材を
含有してなる軽量空隙充填材であり、該軽量モルタル中
のセメント 100重量部に対して、急結材が５〜30重量部
である軽量空隙充填材であり、該軽量モルタル、凝結促
進剤、及び急結材を別々に送給し、合流混合して施工す
ることを特徴とする急速空隙充填方法である。That is, the present invention relates to a lightweight mortar containing air bubbles, a lightweight void filler containing a setting accelerator and a quick setting material, and a cement in the lightweight mortar. Light-weight void filler in which the quick-setting material is 5 to 30 parts by weight with respect to 100 parts by weight, and the lightweight mortar, the setting accelerator, and the quick-setting material are separately fed, mixed and mixed for construction. This is a rapid void filling method.
【０００６】以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
【０００７】本発明で使用する気泡を含有してなる軽量
モルタル（以下単に軽量モルタルという）とは、モルタ
ルミキサ中でモルタルと起泡剤とを激しく攪拌して気泡
をモルタル中に含有させたものや、起泡剤を水溶液と
し、空気と共に発泡器に供給して連続的に製造した、例
えば、シェービングクリーム等のような発泡状のものを
モルタルと混合したものなどである。[0007] The lightweight mortar containing bubbles used in the present invention (hereinafter simply referred to as "light mortar") is a mortar in which a mortar and a foaming agent are vigorously stirred in a mortar mixer to contain bubbles. Alternatively, a foaming agent may be prepared as an aqueous solution, supplied to a foaming device together with air, and continuously manufactured. For example, a foamed product such as a shaving cream or the like may be mixed with a mortar.
【０００８】ここで使用するモルタルとは、セメントペ
ースト、セメントモルタル、及びセメントコンクリート
を総称するものである。[0008] The mortar used herein is a general term for cement paste, cement mortar, and cement concrete.
【０００９】本発明で使用するセメントは特に限定され
るものではなく、通常のセメントが使用可能である。具
体的には普通、早強、及び超早強等の各種ポルトランド
セメントや、これらポルトランドセメントに、シリカ、
スラグ、又はフライアッシュを混合した各種混合セメン
トの使用が可能である。[0009] The cement used in the present invention is not particularly limited, and ordinary cement can be used. Specifically, ordinary, early strength, and various kinds of Portland cement such as ultra-high strength, and these Portland cement, silica,
Various mixed cements mixed with slag or fly ash can be used.
【００１０】起泡剤は特に限定されるものではなく、例
えば、界面活性剤や動物性蛋白質などが使用可能であ
る。起泡剤の使用量は特に限定されるものではなく、通
常、軽量モルタル中のセメント 100重量部に対して、0.
1 〜１重量部が好ましい。0.1 重量部未満では気泡が不
安定な場合があり、１重量部を越え使用しても添加効果
が期待できない。起泡剤は、通常、水溶液で使用する
が、水溶液の濃度は起泡剤の種類によって異なり、特に
限定されるものではなく、通常、１〜10重量％の水溶液
を使用することが好ましい。[0010] The foaming agent is not particularly limited, and for example, a surfactant or an animal protein can be used. The amount of the foaming agent used is not particularly limited, and is usually 0.1 to 100 parts by weight of the cement in the lightweight mortar.
1 to 1 part by weight is preferred. If the amount is less than 0.1 part by weight, bubbles may be unstable, and even if it exceeds 1 part by weight, the effect of addition cannot be expected. The foaming agent is usually used in the form of an aqueous solution, but the concentration of the aqueous solution varies depending on the type of the foaming agent, and is not particularly limited. Usually, an aqueous solution of 1 to 10% by weight is preferably used.
【００１１】セメントと混合する水は特に限定されるも
のではなく、通常、清水の使用が可能である。水の使用
量は特に限定されるものではなく、通常は、セメント 1
00重量部に対して、40〜 100重量部が好ましい。40重量
部未満では流動性が悪くなる場合があり、100 重量部を
超えると強度発現が遅れる場合がある。The water to be mixed with the cement is not particularly limited, and usually, fresh water can be used. The amount of water used is not particularly limited.
The amount is preferably 40 to 100 parts by weight based on 00 parts by weight. If the amount is less than 40 parts by weight, the fluidity may be deteriorated, and if the amount is more than 100 parts by weight, the strength may be delayed.
【００１２】本発明では、セメント、起泡剤、及び水以
外に、骨材や、減水剤、防水剤、及び収縮低減剤等の各
種セメント混和材やセメント混和剤の使用が可能であ
る。In the present invention, it is possible to use various cement admixtures and cement admixtures such as aggregates, water reducing agents, waterproofing agents, and shrinkage reducing agents, in addition to cement, foaming agents, and water.
【００１３】本発明で使用する凝結促進剤としては、ア
ルミン酸塩や珪酸塩の他、硫酸アルミニウム類等が挙げ
られる。アルミン酸塩としては、アルミン酸ナトリウム
やアルミン酸カリウムなどが挙げられ、そのNa2O／Al2O
3 のモル比、又はK2O ／Al2O3 のモル比は、通常、0.8
〜2.6 であり、1.5 〜２が好ましい。アルミン酸塩の使
用量はセメント 100重量部に対して、固形分換算で0.5
〜５重量部が好ましく、１〜３重量部がより好ましい。
0.5 重量部未満では良好な凝結性状が得られない場合が
あり、５重量部を超えて使用しても急結効果が向上せ
ず、その後の長期強度発現が遅れる場合がある。また、
珪酸塩としては、珪酸ナトリウム、水ガラス、及び珪酸
カリウム等が挙げられる。珪酸塩の使用量は、セメント
100重量部に対して、固形分換算で0.5 〜10重量部が好
ましく、１〜５重量部がより好ましい。0.5 重量部未満
では良好な凝結性状が得られない場合があり、10重量部
を超えて使用しても急結効果が向上せず、その後の長期
強度発現が遅れる場合がある。さらに、硫酸アルミニウ
ム類としては、硫酸アルミニウムやミョウバンなどが挙
げられる。硫酸アルミニウムの使用量は、セメント 100
重量部に対して、固形分換算で５〜30重量部が好まし
く、10〜25重量部がより好ましい。５重量部未満では良
好な凝結性状が得られない場合があり、30重量部を超え
て使用しても急結効果が向上せず、その後の長期強度発
現が遅れる場合がある。ミョウバンとしては、カリミョ
ウバンや仮焼ミョウバンなどが挙げられる。ミョウバン
の使用量は、セメント 100重量部に対して、固形分換算
で0.3 〜10重量部が好ましく、0.5 〜５重量部がより好
ましい。0.3 重量部未満では良好な凝結性状が得られな
い場合があり、10重量部を超えて使用しても急結効果が
向上せず、その後の長期強度発現が遅れる場合がある。
これらの凝結促進剤のうち、溶解性や急結性の面からア
ルミン酸塩の使用が好ましい。Examples of the setting accelerator used in the present invention include aluminum sulfates, in addition to aluminates and silicates. Examples of the aluminate include sodium aluminate and potassium aluminate, and Na 2 O / Al 2 O
The molar ratio of 3 or K 2 O / Al 2 O 3 is usually 0.8
-2.6, preferably 1.5-2. The amount of aluminate used is 0.5% in terms of solid content based on 100 parts by weight of cement.
It is preferably from 5 to 5 parts by weight, more preferably from 1 to 3 parts by weight.
If the amount is less than 0.5 part by weight, good setting properties may not be obtained. If the amount exceeds 5 parts by weight, the quick setting effect is not improved, and the subsequent development of long-term strength may be delayed. Also,
Examples of the silicate include sodium silicate, water glass, and potassium silicate. The amount of silicate used is cement
It is preferably 0.5 to 10 parts by weight, more preferably 1 to 5 parts by weight, based on 100 parts by weight in terms of solid content. If it is less than 0.5 part by weight, good setting properties may not be obtained, and if it exceeds 10 parts by weight, the quick setting effect may not be improved, and the subsequent development of long-term strength may be delayed. Further, examples of aluminum sulfates include aluminum sulfate and alum. Aluminum sulfate is used in cement 100
The amount is preferably 5 to 30 parts by weight, more preferably 10 to 25 parts by weight, in terms of solid content based on parts by weight. If the amount is less than 5 parts by weight, good setting properties may not be obtained. If the amount exceeds 30 parts by weight, the quick setting effect is not improved, and the subsequent development of long-term strength may be delayed. Examples of the alum include Kali alum and calcined alum. The amount of alum used is preferably from 0.3 to 10 parts by weight, more preferably from 0.5 to 5 parts by weight, in terms of solid content, based on 100 parts by weight of cement. If it is less than 0.3 part by weight, good setting properties may not be obtained, and if it exceeds 10 parts by weight, the quick setting effect is not improved, and the subsequent development of long-term strength may be delayed.
Of these setting accelerators, the use of aluminates is preferred from the viewpoint of solubility and quick setting.
【００１４】本発明で使用する急結材としては、カルシ
ウムアルミネート、又はカルシウムアルミネートと硫酸
塩の混合物を使用する。As the quick setting material used in the present invention, calcium aluminate or a mixture of calcium aluminate and sulfate is used.
【００１５】カルシウムアルミネートとは、CaO 原料や
Al2O3 原料などを焼成や溶融など熱処理して生成するも
ので、化学成分として CaOとAl2O3 を有効成分とするも
のである。そして、CaO をC 、Al2O3 をA とすると、C
12A7 、CA、CA2 、及びC3A 等と示される鉱物組成を主
成分とするもので、結晶質、非晶質いずれも使用可能で
ある。これらのうち、非晶質カルシウムアルミネートの
使用が好ましい。本発明ではCaO 原料、Al2O3 原料、及
びCaSO4 原料等を使用して生成するカルシウムサルホア
ルミネートもカルシウムアルミネートと同様使用可能で
ある。また、SiO2をS とすると、C2ASと示される鉱物組
成を有するものも、本発明ではカルシウムアルミネート
と同様に使用可能である。カルシウムアルミネートの粒
度はブレーン比表面積で 3,000〜6,000cm2/gが好まし
い。3,000cm2/g未満では初期強度が低下する場合があ
り、6,000cm2/gを越えても効果が期待できない。Calcium aluminate is a raw material of CaO or
It is produced by heat treatment such as sintering or melting of Al 2 O 3 raw material, etc. It contains CaO and Al 2 O 3 as effective components as chemical components. If CaO is C and Al 2 O 3 is A, C
12 A 7, CA, CA 2 , and as a main component a mineral composition represented as C 3 A or the like, crystalline, amorphous are both available. Of these, the use of amorphous calcium aluminate is preferred. In the present invention, calcium sulfoaluminate produced using a CaO raw material, an Al 2 O 3 raw material, a CaSO 4 raw material and the like can be used similarly to calcium aluminate. Further, when SiO 2 is represented by S, those having a mineral composition represented by C 2 AS can be used in the present invention in the same manner as calcium aluminate. The particle size of calcium aluminate is preferably 3,000 to 6,000 cm 2 / g in terms of Blaine specific surface area. If it is less than 3,000 cm 2 / g, the initial strength may decrease, and if it exceeds 6,000 cm 2 / g, no effect can be expected.
【００１６】硫酸塩としては、硫酸ナトリウムや硫酸カ
リウムなどのアルカリ金属硫酸塩や、硫酸カルシウムな
どのアルカリ土類金属硫酸塩が使用可能であり、これら
のうち、硫酸カルシウム（セッコウ）の使用が好まし
く、無水セッコウ、特にII型無水セッコウの使用がより
好ましい。硫酸塩の粒度はブレーン比表面積で 3,000〜
8,000cm2/gが好ましい。3,000cm2/g未満では初期強度が
低下する場合があり、8,000cm2/gを越えても効果が期待
できない。硫酸塩の使用量は、カルシウムアルミネート
100重量部に対して、50〜 200重量部が好ましく、100
〜200 重量部がより好ましい。50重量部未満では強度の
伸びが低下する場合があり、200 重量部を越えると膨張
性を示す場合がある。As the sulfate, an alkali metal sulfate such as sodium sulfate or potassium sulfate, or an alkaline earth metal sulfate such as calcium sulfate can be used. Of these, calcium sulfate (gypsum) is preferably used. , Anhydrous gypsum, particularly type II anhydrous gypsum is more preferred. The particle size of sulfate is 3,000 ~
8,000 cm 2 / g is preferred. If it is less than 3,000 cm 2 / g, the initial strength may decrease, and if it exceeds 8,000 cm 2 / g, no effect can be expected. The amount of sulfate used is calcium aluminate
50 to 200 parts by weight, preferably 100 to 100 parts by weight,
~ 200 parts by weight is more preferred. If the amount is less than 50 parts by weight, the elongation of the strength may be reduced, and if it exceeds 200 parts by weight, the material may exhibit expandability.
【００１７】また、急結材の練り置きや圧送性を良くす
るために、適時、凝結遅延剤を併用することが好まし
い。凝結遅延剤は特に限定されるものではなく、例え
ば、クエン酸、酒石酸、及びグルコン酸等のオキシカル
ボン酸又はその塩や、炭酸ナトリウムや炭酸カリウムな
どの炭酸塩が挙げられ、そのうちの一種又は二種以上が
使用可能である。凝結遅延剤の使用量は特に限定される
ものではなく、通常、セメントと急結材の合計 100重量
部に対して、0.1 〜２重量部が好ましい。0.1 重量部未
満では圧送性が低下する場合があり、２重量部を越える
と凝結不良になる場合がある。It is preferable to use a setting retarder in a timely manner in order to improve the kneading of the quick-setting material and the pumpability. The setting retarder is not particularly limited, and examples thereof include oxycarboxylic acids such as citric acid, tartaric acid, and gluconic acid or salts thereof, and carbonates such as sodium carbonate and potassium carbonate. More than species are available. The amount of the setting retarder used is not particularly limited, and is usually preferably 0.1 to 2 parts by weight based on 100 parts by weight of the total of cement and quick-setting material. If the amount is less than 0.1 part by weight, the pumpability may decrease, and if it exceeds 2 parts by weight, poor setting may occur.
【００１８】急結材は、カルシウムアルミネート、又は
カルシウムアルミネートと硫酸塩からなるものであっ
て、その使用量は、セメント 100重量部に対して、５〜
30重量部が好ましく、10〜20重量部がより好ましい。５
重量部未満では強度発現性が悪くなる場合があり、30重
量部を超えると配管を閉塞する場合がある。The quick-setting material is composed of calcium aluminate or calcium aluminate and sulfate. The amount of the quick-setting material is 5 to 100 parts by weight of cement.
It is preferably 30 parts by weight, more preferably 10 to 20 parts by weight. 5
If the amount is less than 30 parts by weight, the strength may be poor. If the amount is more than 30 parts by weight, the pipe may be blocked.
【００１９】これらの凝結促進剤と急結材は均一に混合
できる面や輸送しやすさから、水と混合した懸濁液や水
溶液にして用いることが好ましい。混合する水の量は特
に限定されるものではなく、通常、凝結促進剤の場合
は、凝結促進剤 100重量部に対して、100 〜300 重量部
が好ましい。100 重量部未満では懸濁液や水溶液が硬く
なり、送給が困難になる場合があり、300 重量部を超え
ると軽量空隙充填材の流動性が大きくなりすぎて凝結状
態が不良になる場合がある。急結材の場合は、急結材 1
00重量部に対して、50〜 150重量部が好ましく、70〜10
0 重量部がより好ましい。50重量部未満では懸濁液又は
水溶液が硬くなり、送給が困難になる場合があり、150
重量部を超えると軽量空隙充填材の流動性が大きくなり
すぎ、気泡が不安定になり、消泡して泡が大きくなった
り、脱泡して比重が大きくなったりする場合がある。These setting accelerators and quick setting materials are preferably used in the form of a suspension or an aqueous solution mixed with water, because they can be uniformly mixed and are easy to transport. The amount of water to be mixed is not particularly limited. Usually, in the case of a setting accelerator, 100 to 300 parts by weight is preferable with respect to 100 parts by weight of the setting accelerator. If the amount is less than 100 parts by weight, the suspension or the aqueous solution becomes hard and may be difficult to feed.If the amount is more than 300 parts by weight, the flowability of the lightweight void filler becomes too large, and the coagulation state may be deteriorated. is there. For quick-setting materials, quick-setting materials 1
50 to 150 parts by weight, preferably 70 to 10 parts by weight, per 100 parts by weight
0 parts by weight is more preferred. If the amount is less than 50 parts by weight, the suspension or the aqueous solution may be hard, and may be difficult to be fed.
When the amount is more than the weight part, the fluidity of the lightweight void filler becomes too large, the bubbles become unstable, and the bubbles may be defoamed to increase the bubbles or may be defoamed to increase the specific gravity.
【００２０】本発明では、軽量モルタル、凝結促進剤、
及びカルシウムアルミネートを含有する急結材を混合し
て軽量空隙充填材とする。In the present invention, a lightweight mortar, a setting accelerator,
And a quick-setting material containing calcium aluminate to obtain a lightweight void filler.
【００２１】軽量モルタル、凝結促進剤、及び急結材の
混合方法としては、均一に混合できれば特に限定される
ものではなく、通常のミキサを使用することが可能であ
り、凝結時間を短くする場合や施工性を考えた場合、軽
量モルタル、凝結促進剤、及び急結材を別々に送給し、
合流混合しながら施工するのが好ましい。The method of mixing the lightweight mortar, the setting accelerator and the quick-setting material is not particularly limited as long as it can be uniformly mixed, and an ordinary mixer can be used. When considering the workability and workability, separately send the lightweight mortar, setting accelerator, and quick-setting material,
It is preferable to carry out the construction while merging and mixing.
【００２２】凝結促進剤と急結材の混合順序や添加位置
は特に限定されるものではない。混合順序は両者がほぼ
同時か凝結促進剤を先に混合するのが好ましく、凝結促
進剤を軽量モルタルと混合してから圧送することも可能
である。軽量モルタルと凝結促進剤を混合後、30cm以内
で急結材を合流混合し直ちに施工することがより好まし
い。軽量モルタルと凝結促進剤を混合後、急結材を合流
混合するまでの時間が長いと混合物の粘度が高くなる可
能性がある。There are no particular restrictions on the order in which the setting accelerator and the quick-setting material are mixed, or on the position of addition. The mixing order is preferably approximately simultaneous or the setting accelerator is mixed first, and it is also possible to mix the setting accelerator with the lightweight mortar before pumping. After mixing the lightweight mortar and the setting accelerator, it is more preferable that the quick-setting material be combined and mixed within 30 cm and then immediately applied. If the time until the quick-setting material is combined and mixed after mixing the lightweight mortar and the setting accelerator is long, the viscosity of the mixture may increase.
【００２３】合流混合の方法としては、Ｙ字管等の混合
管を使用する方法、二重管を使用する方法、及び凝結促
進剤と急結材の懸濁液をシャワー状に合流混合させるイ
ンレットピースを使用する方法等がある。さらに、凝結
促進剤と急結材とを送給する管の途中に空気を供給し
て、軽量モルタルと、凝結促進剤と急結材の懸濁液を添
加混合する方法は、軽量モルタル、凝結促進剤、及び急
結材の合流混合が速やかに行われ、混合管内に軽量空隙
充填材が付着するなどのトラブルも防げて好ましい。ま
た、合流混合後の管中にスパイラル状のミキサを設置し
てさらに混合する方法も可能である。As the method of merging and mixing, a method using a mixing tube such as a Y-shaped tube, a method using a double tube, and an inlet for merging and mixing a suspension of a setting accelerator and a quick-setting material in a shower shape. There is a method using a piece. Further, a method of supplying air to the middle of a pipe for supplying the setting accelerator and the quick setting material, and adding and mixing a lightweight mortar and a suspension of the setting accelerator and the quick setting material is known as a lightweight mortar, a setting method. It is preferable because the merging and mixing of the accelerator and the quick-setting material are performed promptly, and troubles such as adhesion of the lightweight void filler in the mixing tube can be prevented. Further, a method in which a spiral mixer is provided in the tube after the merging and mixing, and further mixing is possible.
【００２４】軽量空隙充填材の混合が充分で、混合後速
やかに打設すれば、長時間連続して混合しても配管内に
軽量空隙充填材が付着することなく連続施工が可能であ
るが、混合が不充分だと、部分的に急結するものがあ
り、それが配管中で硬化して配管を閉塞するおそれがあ
る。If the light-weight void filler is sufficiently mixed, and is poured immediately after the mixing, even if mixing is continued for a long time, the light-weight void filler can be continuously worked without adhering to the pipe. If the mixing is insufficient, there is a possibility that a part of the mixture may be rapidly set, which may harden in the piping and block the piping.
【００２５】[0025]
【実施例】以下、本発明の実施例に基づいてさらに説明
する。The present invention will be further described below with reference to embodiments.
【００２６】実施例１ セメント 100重量部、骨材 200重量部、及び水80重量部
をミキサーで混練して製造したモルタルに、起泡剤水溶
液８重量部と高圧空気で製造した気泡を混入して軽量モ
ルタルを製造した。一方、急結材 100重量部、凝結遅延
剤４重量部、及び水 100重量部を混合して懸濁液を調製
した。セメント 100重量部に対して、表１に示す混合割
合になるように凝結促進剤を圧送して合流混合し、その
後10cm以内で、別に圧送した急結材含有の懸濁液を、セ
メント 100重量部に対して、急結材が15重量部になるよ
うに混合管で合流混合し、直ちに打設した。その後、無
駆動ラインミキサで混合しながら連続的に軽量空隙充填
材とし、５ｍの高さに打設した。軽量空隙充填材の連続
操業時間と比重を測定した。結果を表１に示す。Example 1 A mortar produced by kneading 100 parts by weight of cement, 200 parts by weight of aggregate, and 80 parts by weight of water with a mixer was mixed with 8 parts by weight of a foaming agent aqueous solution and air bubbles produced by high-pressure air. To produce lightweight mortar. On the other hand, a suspension was prepared by mixing 100 parts by weight of a quick setting material, 4 parts by weight of a setting retarder, and 100 parts by weight of water. To 100 parts by weight of cement, a setting accelerator is pumped so as to have a mixing ratio as shown in Table 1, and they are mixed and mixed. Then, within 10 cm, the suspension containing the quick-setting material separately pumped is mixed with 100 parts by weight of cement. The mixture was mixed and mixed with a mixing pipe so that the quick-setting material became 15 parts by weight, and was immediately poured. Thereafter, while being mixed with a non-drive line mixer, a lightweight void filler was continuously formed and poured into a height of 5 m. The continuous operation time and specific gravity of the lightweight void filler were measured. Table 1 shows the results.
【００２７】＜使用材料＞ セメント ：高炉セメントＢ種、市販品 骨材 ：７号珪砂、市販品 水 ：水道水 起泡剤 ：市販品、界面活性剤系、濃度４重量％に希
釈 凝結促進剤ａ：K2O ／Al2O3 のモル比1.5 の50重量％ア
ルミン酸カリウム水溶液 凝結促進剤ｂ：水ガラス、市販品 凝結促進剤ｃ：硫酸アルミニウム、市販品 凝結促進剤ｄ：カリミョウバン、市販品 急結材 ：C12A7 主成分、非晶質カルシウムアルミネ
ート／無水セッコウの重量比が１／1.5 混合品 凝結遅延剤：クエン酸と炭酸カリウムの混合品<Materials used> Cement: Blast furnace cement B, commercial product Aggregate: No. 7 silica sand, commercial product Water: tap water Foaming agent: commercial product, surfactant system, diluted to a concentration of 4% by weight Setting accelerator a: 50% by weight aqueous solution of potassium aluminate having a molar ratio of K 2 O / Al 2 O 3 of 1.5. Coagulation accelerator b: Water glass, commercially available coagulation accelerator c: Aluminum sulfate, commercially available coagulation accelerator d: Kali alum, commercially Kyuyuizai: C 12 a 7 the main component, the weight ratio of the amorphous calcium aluminate / anhydrous gypsum 1 / 1.5 mixture article retarder: mixing products of citric acid and potassium carbonate
【００２８】＜測定方法＞ 連続操業時間：軽量空隙充填材を連続して製造した時の
時間 比重 ：充填28日後底部と上部から10×10×10cm供
試体を切出し測定<Measurement method> Continuous operation time: Time when light-weight void filler is manufactured continuously Specific gravity: 28 days after filling, 10 × 10 × 10 cm specimens are cut out from the bottom and top and measured
【００２９】[0029]
【表１】 [Table 1]
【００３０】実施例２ セメント 100重量部に対して、凝結促進剤ａ３重量部と
表２に示す急結材を配合したこと以外は実施例１と同様
に行い比重を測定した。結果を表２に示す。Example 2 A specific gravity was measured in the same manner as in Example 1 except that 3 parts by weight of the setting accelerator a and the quick-setting material shown in Table 2 were added to 100 parts by weight of cement. Table 2 shows the results.
【００３１】[0031]
【表２】 [Table 2]
【００３２】[0032]
【発明の効果】本発明の軽量空隙充填材を用いることに
より、気泡が安定で軽量なモルタルが製造でき、しか
も、３〜４時間程度の長時間連続施工、大量施工、側圧
が加わる構造への施工、への適用可能となった。By using the lightweight void filler of the present invention, a lightweight mortar with stable air bubbles can be manufactured, and it can be applied to a structure that can be continuously worked for a long time of about 3 to 4 hours, a large amount of work, and a side pressure is applied. Now applicable to construction.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０４Ｂ 103:12 111:40 Ｃ０９Ｋ 103:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C04B 103: 12 111: 40 C09K 103: 00
Claims (3)
促進剤、及び急結材を含有してなる軽量空隙充填材。1. A lightweight void filler comprising a lightweight mortar containing air bubbles, a setting accelerator, and a quick-setting material.
00重量部に対して、５〜30重量部であることを特徴とす
る請求項１記載の軽量空隙充填材。2. The quick setting material is a cement in a lightweight mortar.
The lightweight void filler according to claim 1, wherein the amount is 5 to 30 parts by weight based on 00 parts by weight.
促進剤、及び急結材を別々に送給し、合流混合して施工
することを特徴とする急速空隙充填方法。3. A rapid void filling method comprising separately supplying a lightweight mortar containing air bubbles, a setting accelerator, and a quick-setting material, and merging and mixing them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26317897A JP3729619B2 (en) | 1997-09-29 | 1997-09-29 | Lightweight void filler and rapid void filling method using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26317897A JP3729619B2 (en) | 1997-09-29 | 1997-09-29 | Lightweight void filler and rapid void filling method using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11100250A true JPH11100250A (en) | 1999-04-13 |
| JP3729619B2 JP3729619B2 (en) | 2005-12-21 |
Family
ID=17385864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26317897A Expired - Fee Related JP3729619B2 (en) | 1997-09-29 | 1997-09-29 | Lightweight void filler and rapid void filling method using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3729619B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016102031A (en) * | 2014-11-27 | 2016-06-02 | 太平洋マテリアル株式会社 | Cavity filler |
| CN115572182A (en) * | 2022-10-14 | 2023-01-06 | 华新水泥股份有限公司 | Slow-release foaming light polymer material and preparation method thereof |
-
1997
- 1997-09-29 JP JP26317897A patent/JP3729619B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016102031A (en) * | 2014-11-27 | 2016-06-02 | 太平洋マテリアル株式会社 | Cavity filler |
| CN115572182A (en) * | 2022-10-14 | 2023-01-06 | 华新水泥股份有限公司 | Slow-release foaming light polymer material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3729619B2 (en) | 2005-12-21 |
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