JPS59164372A - Technique for spraying on slope - Google Patents
Technique for spraying on slopeInfo
- Publication number
- JPS59164372A JPS59164372A JP3725783A JP3725783A JPS59164372A JP S59164372 A JPS59164372 A JP S59164372A JP 3725783 A JP3725783 A JP 3725783A JP 3725783 A JP3725783 A JP 3725783A JP S59164372 A JPS59164372 A JP S59164372A
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- spraying
- acrylic polymer
- slope
- polymer emulsion
- 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
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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は法面処理工事において法面にモルタルを吹付け
る法面吹付工法に関し、更に詳しくはアクリル系重合体
エマルションを使用する、２工程よシ成る法面のモルタ
ル吹付工法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slope spraying method for spraying mortar onto a slope surface in slope treatment work, and more specifically, a two-step mortar spraying method using an acrylic polymer emulsion. Regarding construction methods.
従来、法面のモルタル吹付工事に当っては、制限された
水対セメントの重量比（Ｗｌｏ）を有するモルタルを特
殊の土木用吹付機を使用して被処理法面に吹付けること
が行われて来たが、該吹付けられたモルタル層の接着性
、耐クランク性、耐候１生及び種々の機械的強度におい
て問題点が存在した。この問題を解決するためにビニル
樹脂をモルタルに混入する試みも行われたが、なお満足
な成果は得られなかった。更にその上、樹脂類の添加量
を増加させようとすると該吹付用モルタルの制限された
Ｗｌｏにも関連して粘性の増大、泡豆ち等の現象が生じ
、上記土木用吹付機においては吹付不能となるため十分
な量の樹脂を添加することができないという問題点も存
在した。Conventionally, in mortar spraying work on slopes, mortar with a limited water-to-cement weight ratio (Wlo) was sprayed onto the slope using a special civil engineering spraying machine. However, there were problems with the adhesion, crank resistance, weather resistance, and various mechanical strengths of the sprayed mortar layer. Attempts have been made to mix vinyl resin into mortar to solve this problem, but no satisfactory results have been obtained. Furthermore, when trying to increase the amount of resin added, phenomena such as increased viscosity and foaming occur due to the limited Wlo of the spraying mortar, and the above-mentioned civil engineering spraying machine There was also the problem that a sufficient amount of resin could not be added.
本発明者らは鋭意研究の結果第一工程として特定量以下
のアクリル系重合体エマルションを混入したモルタルを
法面に吹付け、次いで第二工程として該アクリル系重合
体工ｉルション又は該エマルションヲ含有するモルタル
組成物を前記第一工程のモルタル層表面上に塗布するこ
とによυ前記の諸問題が解決されることを見い出した。As a result of intensive research, the present inventors sprayed mortar mixed with a specified amount or less of an acrylic polymer emulsion onto the slope surface in the first step, and then sprayed the acrylic polymer emulsion or emulsion in the second step. It has been found that the above-mentioned problems can be solved by applying the mortar composition containing the above-mentioned mortar composition onto the surface of the mortar layer in the first step.
すなわち本発明はニ
アクリル系重合体エマルションを重合体／セメントの重
量比（Ｐｌｏ ）約５％以下において含有するモルタル
金法面に吹付け、次いで該アクリル系重合体エマルショ
ン又は重合体対エマルションの重量比的５％を超えて該
アクリル系重合体エマルションを含有するモルタル組成
物を前記吹付けられたモルタル表面上に塗布することよ
り成る。That is, the present invention involves spraying an acrylic polymer emulsion onto a mortar gold slope containing a polymer/cement weight ratio (Plo) of about 5% or less, and then spraying the acrylic polymer emulsion or the polymer to emulsion weight ratio The method comprises applying a mortar composition containing more than 5% of the acrylic polymer emulsion onto the sprayed mortar surface.
アクリル系重合体エマルションを吹付用モルタルに添加
した場合、従来の、工法に比較して格段に優れた付着性
、耐クランク性、耐候性及び種、々の機械的強度、特に
曲げ強度を示す。When an acrylic polymer emulsion is added to spray mortar, it exhibits significantly superior adhesion, crank resistance, weather resistance, and various mechanical strengths, especially bending strength, compared to conventional construction methods.
該アクリル系重合体エマルションを、（重合体／セメン
１−）Ｐ１０≧約１０チの割合でモルタルに添加した場
合に所望の効果が得られる。しかしながら、前述したよ
うにＷ／′０が厳’Ｊ）’に制限される法面吹付用モル
タル中にこのような多量の重合体を使用しては土木用吹
付機による吹付けが不可能となる。そこで本発明におい
てはこのモルタル吹付に当ってＰｌｏ ’ｉ約５％以下
に押える。この最大値は吹付機の性能により更に低く、
レリえば１％以下となる場合もある。最小値は臨界的で
はないが余りにも少量では効果が不十分であり、 Ｐｌ
ｏが少くとも約０．５％以上であるようにすべきである
。The desired effect can be obtained when the acrylic polymer emulsion is added to mortar in a ratio of (polymer/cemen 1-)P10≧about 10%. However, as mentioned above, if such a large amount of polymer is used in mortar for slope spraying where W/'0 is strictly limited to 'J)', spraying with a civil engineering spraying machine will be impossible. Become. Therefore, in the present invention, Plo'i is kept to about 5% or less during mortar spraying. This maximum value is even lower due to the performance of the spray machine.
In some cases, it may be less than 1%. Although the minimum value is not critical, too small a quantity is insufficiently effective, and Pl
o should be at least about 0.5% or greater.
所望量のモルタルｔてより所望の厚さのモルタル層を形
成させた後、該モルタル層表面上にＰ、１０が約５チを
超えたモルタル組成物全塗布する。この場合該モルタル
組成物は前記吹付用モルタルと同一組成である必要はな
く、またＷｌｏの制限もない。該組成物におけるＰｌｏ
の上限は臨界的ではないが塗布方式によシ、また経済的
見地から通常には約１４％程度である。また上記モルタ
ルの代りに該エマルション１４容量チ液を使用すること
ができる。本発明の第二工程における該エマルションの
使用量は１０％液で５００ ｆ／ｌｒ？以上であり、該
エマルション含有モルタルの使用量は２ ｋｐ／背であ
る。After forming a mortar layer of a desired thickness using a desired amount of mortar, a mortar composition containing P, 10 of more than about 5 inches is entirely applied onto the surface of the mortar layer. In this case, the mortar composition does not need to have the same composition as the spraying mortar, and there is no restriction on Wlo. Plo in the composition
Although the upper limit is not critical, it depends on the coating method and is usually about 14% from an economical point of view. In addition, the emulsion 14 volume slurry solution can be used in place of the mortar described above. The amount of the emulsion used in the second step of the present invention is 500 f/lr for 10% liquid. The amount of emulsion-containing mortar used is 2 kp/back.
本発明のアクリル系重合体エマル７ヨンはアクリル酸及
びメタクリル酸ならびにそれらの誘導体を重合すること
によシ製造される重合体のエマルションである。これら
アクリル系重合体エマルションのうちでソープフリー陽
イオン性重合体エマルンヨンは特に好ましい。ここにソ
ープフリーとは乳化剤としての石けん分の含量が０〜１
．５％であることをいう。本発明のアクリル系重合体エ
マルションの濃度は特に限定されないけれど通常には固
形公約４０％のものが使用される。The acrylic polymer emulsion of the present invention is a polymer emulsion produced by polymerizing acrylic acid and methacrylic acid and their derivatives. Among these acrylic polymer emulsions, soap-free cationic polymer emulsions are particularly preferred. Soap-free means that the soap content as an emulsifier is 0 to 1.
．． 5%. Although the concentration of the acrylic polymer emulsion of the present invention is not particularly limited, a solid content of about 40% is usually used.
第二工程における塗布手段としては吹付が最も好ましい
けれどハケ塗９、コテ塗ｐ等によることもできる。第二
工程におけるモルタル組成物はＷｌｏＫつい１の制約は
なく、土木用のみならず建築用などの吹付機を使用して
容易に吹付を行うことができる。Although spraying is most preferable as the application method in the second step, brush application 9, trowel application, etc. can also be used. The mortar composition in the second step is not subject to any restrictions, and can be easily sprayed using a spraying machine not only for civil engineering but also for construction.
本発明の工法によれば本発明の吹付用モルタルは大きな
付Ｍ性を有するので吹付に当ってモルタルのロスが少く
、形成されたモルタル層は耐クランク針、耐候性、曲げ
強さ等の化学的及び機械的註質に優れており、したがっ
て施工モルタル層の厚さを減少させるとともできる。ま
た本発明によシ施工されたモルタルは養生期間が短かい
、特色を有する。本発明工法の第一工程においては従来
の法面吹付用モルタルの配合割合、特にＷｌｏ ’＜変
更することなく、シかも慣用の土木用吹付機を使用して
法面工事を行うことができる。壕だ第二工程においても
なんら特殊の機械装置を必要としない。According to the method of the present invention, the mortar for spraying of the present invention has a large adhesion M property, so there is little loss of mortar during spraying, and the formed mortar layer has chemical properties such as crank needle resistance, weather resistance, bending strength, etc. It has excellent physical and mechanical properties and can therefore be used to reduce the thickness of the mortar layer. Furthermore, the mortar constructed according to the present invention is characterized by a short curing period. In the first step of the construction method of the present invention, slope construction can be carried out using a conventional civil engineering spraying machine without changing the blending ratio of mortar for slope spraying, especially Wlo'. Even in the second process, no special machinery is required.
次に実施例によシ本願発明を更に説明する。Next, the present invention will be further explained with reference to Examples.
下記実施例における部及びノミ−セントはすべて重量に
よる。All parts and cents in the following examples are by weight.
実施例１ 下記により各試料を調製した。Example 1 Each sample was prepared as follows.
試料Ａ： セメント４２０部、水２００部、砂１６０部
及びホゾリス（日暮マスター
ビルダーズ■製減水剤−５Ｌ）２５％溶液４２部を混合
する。Sample A: 420 parts of cement, 200 parts of water, 160 parts of sand, and 42 parts of a 25% solution of Hozolith (water reducer - 5L manufactured by Higurashi Master Builders ■) were mixed.
試料Ｂ： 上記試料へにノ々リスター３０９（）ｊリス
ターエ業■製ソーゾフリー陽イオ
ン註アクリル重合体の水性エマルショ
ン、固形分４０チ） １０．５部（Ｐｌｏ ＝１％、本
発明の範囲内）１！ｃ添加する。Sample B: To the above sample, 10.5 parts (Plo = 1%, within the scope of the present invention) of Sozofree cationic cationic aqueous emulsion of acrylic polymer (solid content 40%) manufactured by Nono Lister 309 () J Lister Industrial Co., Ltd. 1! Add c.
試料Ｏ： 上記試料Ａにパリスクー３０９を６３部（Ｐ
１０＝６％、本発明の範囲外）を添加する。Sample O: 63 parts of Paricou 309 (P
10=6%, outside the scope of the present invention).
試料Ａは標準的な慣用の法面工事用モルタル処方である
。Sample A is a standard conventional slope mortar formulation.
上記各試料を慣用の土木用吹付機（三和産業■会社製）
を使用して吹付を行った。試料Ａならびに参考試料Ｂは
吹付可能であったが試料Ｃは粘度が大きく、かつ泡豆ち
が劇しく吹付不能であった。Each of the above samples was sprayed using a conventional civil engineering spraying machine (manufactured by Sanwa Sangyo Company).
Spraying was carried out using. Sample A and reference sample B could be sprayed, but sample C had a high viscosity and was too foamy to be sprayed.
実施例２
前記実施例１ｉＣ記載の組成割合において調製した試料
Ａ及びＢを前記実施例１に記載の吹付機を使用して、ラ
ス網を張った岩盤法面約１５イに厚さ１１００ｆｆ１に
おいて吹付けた。吹付終了後に、」二記試料Ｂモルタル
表面上に、１、 セメント１００部及びノ々リスター
３０９の固形分１０％のもの１４０部（Ｐｌｏ ＝１４
％）及び珪砂８号２５０部のモルタル組成物を２ ｋＶ
／ｌｔ？において、
■、ノ々リスター３０９を水で固形分１０％に稀釈した
ものを５００ ｆ／−において、慣用の建築用吹付機を
使用して吹きつけた。この試料全それぞれ本発明試料■
及び本発明試料■とする。Example 2 Samples A and B prepared at the composition ratios described in Example 1iC were sprayed to a thickness of 1100 ff1 onto approximately 15 mm of lath netted rock slope using the spraying machine described in Example 1. I attached it. After spraying, 1. 100 parts of cement and 140 parts of Nono Lister 309 with a solid content of 10% (Plo = 14
%) and 250 parts of silica sand No. 8 at 2 kV.
/lt? (1) Nonolister 309 diluted with water to a solids content of 10% was sprayed at 500 f/- using a conventional construction sprayer. All of these samples are samples of the present invention■
and sample of the present invention.
施工時（（おける流れ落ちによるモルタルロスと４週間
後における圧縮強度及び曲げ強度を測定した。Mortar loss due to run-off during construction and compressive strength and bending strength after 4 weeks were measured.
モルタルロス（→ ５〜８ ５〜８ ２０〜２５
５〜８“ａｔｖ′干縮富庁
Ｖ３９０ ３８０ ３２０ ３７０４週間曲げ強
度 ８５ ８０ ５５ ７５ひび
割れ防止性１ｒＮＶｃｆ１ 優れている 普通 少り
優、”Ｌれている ている本発明
試料■及び■は共に良好な成績を示した。Mortar loss (→ 5~8 5~8 20~25
5 to 8 "atv' Shrinkage Wealth Agency V390 380 320 370 4-week bending strength 85 80 55 75 Crack prevention 1rNVcf1 Excellent Average Slightly excellent, "L" Invention samples ■ and ■ are both good Showed the results.
Claims (2)
メントの重量比約５チ以下において含有するモルタルを
法面に吹付け、次いで該アクリル系重合体エマルション
又は該アクリル系重合体エマルションを重合体／セメン
トの重量比約５チを超えて含有するモルタル組成物を前
記吹付けられたモルタル表面上に塗布することを特徴と
する法面吹付工法。(1) A mortar containing an acrylic polymer emulsion at a polymer/cement weight ratio of about 5 inches or less is sprayed onto the slope, and then the acrylic polymer emulsion or the acrylic polymer emulsion is mixed into the polymer/cement. A slope spraying method, characterized in that a mortar composition containing more than about 5 inches of mortar is applied onto the sprayed mortar surface.
ー陽イオン性重合体の水性エマルションである特許請求
の範囲第（１）項記載の法面吹付工法。(2) The slope spraying method according to claim (1), wherein the acrylic polymer emulsion is an aqueous emulsion of a soap-free cationic polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3725783A JPS59164372A (en) | 1983-03-09 | 1983-03-09 | Technique for spraying on slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3725783A JPS59164372A (en) | 1983-03-09 | 1983-03-09 | Technique for spraying on slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59164372A true JPS59164372A (en) | 1984-09-17 |
Family
ID=12492593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3725783A Pending JPS59164372A (en) | 1983-03-09 | 1983-03-09 | Technique for spraying on slope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59164372A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61188472A (en) * | 1985-02-14 | 1986-08-22 | Kowa Kagaku Kogyo Kk | Electrically conductive coating agent composition |
| JPH04104928A (en) * | 1990-08-22 | 1992-04-07 | Kyoei Doboku Kogaku Kk | Mortar composition |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562360A (en) * | 1979-06-22 | 1981-01-12 | Barisutaa Kogyo Kk | Coating composition |
-
1983
- 1983-03-09 JP JP3725783A patent/JPS59164372A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562360A (en) * | 1979-06-22 | 1981-01-12 | Barisutaa Kogyo Kk | Coating composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61188472A (en) * | 1985-02-14 | 1986-08-22 | Kowa Kagaku Kogyo Kk | Electrically conductive coating agent composition |
| JPH04104928A (en) * | 1990-08-22 | 1992-04-07 | Kyoei Doboku Kogaku Kk | Mortar composition |
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