JPH01308852A - Mortar composition - Google Patents
Mortar compositionInfo
- Publication number
- JPH01308852A JPH01308852A JP62331664A JP33166487A JPH01308852A JP H01308852 A JPH01308852 A JP H01308852A JP 62331664 A JP62331664 A JP 62331664A JP 33166487 A JP33166487 A JP 33166487A JP H01308852 A JPH01308852 A JP H01308852A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- weight
- mortar
- blast furnace
- mica powder
- 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
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 40
- 239000000203 mixture Substances 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000010445 mica Substances 0.000 claims abstract description 25
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 25
- 239000004568 cement Substances 0.000 claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000005336 cracking Methods 0.000 abstract description 10
- 239000011398 Portland cement Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 5
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- USDJGQLNFPZEON-UHFFFAOYSA-N [[4,6-bis(hydroxymethylamino)-1,3,5-triazin-2-yl]amino]methanol Chemical compound OCNC1=NC(NCO)=NC(NCO)=N1 USDJGQLNFPZEON-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はモルタル組成物に関する。詳しくはセメント、
高炉急冷スラグ微粉末からなるセメント部と窩炉急冷ス
ラグ細骨材とマイカ粉末及び減水剤を特定量配合するこ
とＫよりクラックの発生が少なく、かつ施工性が良好で
、高い耐久性を持つモルタル組成物（て関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to mortar compositions. For more information on cement,
A mortar with less cracking, better workability, and higher durability than K, which is composed of a cement part made of pulverized blast furnace slag, quenched slag fine aggregate, mica powder, and a water reducing agent in specific amounts. It relates to compositions.
従来の技術
左官モルタル仕上げは、木造建築の外装やコンクリート
構造物の内外壁に防火、防水、断熱、表面保護等耐久性
向上を目的として広く用いられている。しかし従来のモ
ルタルは、！）基盤母材との接着が悪く剥離しやすい。BACKGROUND ART Plastering mortar finishing is widely used for the purpose of improving durability such as fire prevention, waterproofing, heat insulation, and surface protection on the exterior of wooden buildings and the interior and exterior walls of concrete structures. But traditional mortar! ) Poor adhesion to the base material and easy to peel off.
２）集中クラックが発生しやすい。３）遮水性が低く、
耐久性が低い。2) Concentrated cracks are likely to occur. 3) Poor water impermeability;
Durability is low.
等の欠点を有している。これら欠点を解消するため種々
の方法が試みられてきた。その方法は次の通りである。It has the following drawbacks. Various methods have been tried to overcome these drawbacks. The method is as follows.
ｌ）セメント砂比の増大
モルタル中のセメントに対する細骨材の割合をふやしク
ラックを防止する方法。−収約に広〈実施されているが
作業性、接着性が悪化し耐久性が低下する欠点がある。l) Increasing the cement-to-sand ratio A method of preventing cracks by increasing the ratio of fine aggregate to cement in mortar. - Wide range of uses (Although it has been implemented, there are drawbacks such as poor workability, poor adhesion, and reduced durability.
２）膨張材混入
生石灰又はカルシウムスルホアルミネートを混入し、そ
れぞれ水酸化カルシウム及びエトリンガイト生成による
膨張を利用しモルタルの収縮を低減する方法。この防止
効果は比較的含水率の大きい初期に限られたものであり
、急激な乾燥に対しては効果がないばかりか逆に異常膨
張が起こり、クラック発生の原因ともなる。2) A method of reducing shrinkage of mortar by mixing quicklime or calcium sulfoaluminate as an expanding agent and utilizing the expansion caused by the formation of calcium hydroxide and ettringite, respectively. This preventive effect is limited to the early stage when the moisture content is relatively high, and not only is it ineffective against rapid drying, but on the contrary, abnormal expansion occurs, which can cause cracks to occur.
３）収縮低減剤混入
低級アルコールアルキレンオキシド付加物等、水の表面
張力を低下させる混和剤を用い乾燥収縮を低減させる方
法であるが、クラブク防止効果は十分でない。3) Addition of Shrinkage Reducing Agent This is a method of reducing drying shrinkage using an admixture that lowers the surface tension of water, such as a lower alcohol alkylene oxide adduct, but this method does not have a sufficient effect of preventing cracking.
４）エマルジョン混入
スチレンブタジェンゴムやアクリル系エマルジクンを添
加して基板との接着性を増し、モルタルの伸び能力を大
きくしてクラックを防く゛方法。この方法はエマルジョ
ン混入量を多くすると低温時の強度発現が低下し、硬化
後の硬度、耐候性が悪い。4) A method of adding emulsion-mixed styrene-butadiene rubber or acrylic emulsion to increase adhesion to the substrate, increase the elongation ability of mortar, and prevent cracks. In this method, when the amount of emulsion mixed is increased, the strength development at low temperatures decreases, and the hardness and weather resistance after curing are poor.
５）繊維混入
カーボン、ナイロン等の有機繊維、石綿、ガラスファイ
バー等、無機繊維を混入しモルタルな補強する方法。こ
の方法はひびわれ後の）ＩＩ離崩壊の防止に有効である
が、繊維を混入するとモルタルに伸びがなく施工性が悪
くなる。5) Fiber-mixed method of reinforcing with mortar by mixing carbon, organic fibers such as nylon, inorganic fibers such as asbestos, glass fibers, etc. This method is effective in preventing separation and collapse after cracking, but if fibers are mixed in, the mortar will not stretch and workability will deteriorate.
以上のように、いずれも十分なひびわれ低減効果を得る
ものはなく、また施工性、仕上がりが悪化する場合があ
り、ひびわれの発生が少なくかつ施工性が良好で高い耐
久性をもつモルタルは実用化されていなかった。As mentioned above, none of them has a sufficient effect of reducing cracks, and the workability and finish may deteriorate.Therefore, mortar with less cracking, good workability, and high durability has been put into practical use. It had not been done.
発明が解決しようとする問題点
本発明はフレーク状の形状をもつマイカ粉末に着目しコ
テ圧及び吹付は圧によりマイカ粉末を２次元配向させて
基盤母材との真空接着機能を与え、同時にモルタル硬化
時に於ける水平方向のマドＩＪプクス収縮をマイカフレ
ーク重層間のスライド効果により補償した。Problems to be Solved by the Invention The present invention focuses on mica powder having a flake-like shape, and the trowel pressure and spraying use pressure to orient the mica powder two-dimensionally to give it a vacuum adhesion function with the base material, and at the same time to form a mortar. The horizontal mud IJ shrinkage during curing was compensated for by the sliding effect between the mica flake layers.
さらに高炉スラグ微粉末と減水剤を用いることによって
、マイカとモルタルの付着力を増しモルタルの引張強度
を強めて耐ひびわれ性を高め、高耐久性を実現した。ま
た細骨材に高炉急冷スラグな用いることによってマイカ
使用１（よるモルタルの施工時のだれ落ちを解消し良好
な施工性を得た。Furthermore, by using powdered blast furnace slag and a water reducing agent, we have increased the adhesion between mica and mortar, strengthened the tensile strength of the mortar, improved crack resistance, and achieved high durability. In addition, by using quenched blast furnace slag as the fine aggregate, dripping of mica mortar during construction was eliminated and good workability was achieved.
問題点を解決するだめの手段
すなわち本発明はセメント３０〜７０重量％、粒径１５
ｉ＋ｍ以下の高炉急冷スラグ微粉末７０〜３０重量％の
割合からなるセメント１００重量部、粒径７０μｍ〜５
．０ｍｍの高炉急冷スラグ細骨材１００〜３００重量部
、粒径３０ａｍ−３，０ｍのマイカ粉末５〜４０重量％
、セメント部に対して固形分で２Ｍ量％以下の減水剤か
らなる、クラックの発生が少なく、かつ施工性が良好で
高い耐久性をもつモルタル組成物で′ある。A means to solve the problem, that is, the present invention is to use cement with a particle size of 15 to 30% by weight.
100 parts by weight of cement consisting of 70% to 30% by weight of pulverized blast furnace slag powder of not more than i+m, particle size 70 μm to 5
．． 100-300 parts by weight of quenched blast furnace slag fine aggregate of 0mm, 5-40% by weight of mica powder of particle size 30am-3.0m
This mortar composition is composed of a water reducing agent with a solid content of 2 M% or less based on the cement part, and has little cracking, good workability, and high durability.
本発明で使用するセメントは普通ポルトランドセメント
、早強ポルトランドセメント、高炉セメント、フライア
ブシュセメント、白色セメント等である。The cement used in the present invention is ordinary Portland cement, early strength Portland cement, blast furnace cement, fly bush cement, white cement, etc.
セメント部に用いる粒径１５Ｕｍ以下の高炉急冷スラグ
微粉末は粒径１５μｍ以下を９５重量％以上含有し平均
粒径が６ｚ１ｍ以下のものである。The rapidly cooled blast furnace slag fine powder with a particle size of 15 Um or less used for the cement part contains 95% by weight or more of particles with a particle size of 15 μm or less and has an average particle size of 6z1 m or less.
粒径１５＃ｍ以下の含有量が９５重量％未満の場合及び
平均粒径が６ａｍを超える場合はいずれも強度が低下し
マイカ粉末とモルタルとの付着力が低下する。つぎに本
発明に使用するマイカ粉末は粒径が３０ ａｍから３．
０ ｍのものが適当である。粒径が３０μｍ以下では補
強効果が十分でなく３０咽以上では表面の仕上りが悪化
する。If the content of particles with a particle size of 15 #m or less is less than 95% by weight, or if the average particle size exceeds 6 am, the strength will decrease and the adhesion between the mica powder and the mortar will decrease. Next, the mica powder used in the present invention has a particle size of 30 am to 3.0 am.
0 m is suitable. If the particle size is less than 30 μm, the reinforcing effect will not be sufficient, and if the particle size is more than 30 μm, the surface finish will deteriorate.
細骨材として用いる高炉急冷スラグは粒径が７０ａｍか
ら５．０ ｍのものである。７０μｍ以下では良好な施
工性を得るための水量が増加してひびわれが発生しやす
く、５．０ ｍ以下では表面の仕上がりが悪化する。減
水剤としてはナフタリンスルフオン酸ホルマリン縮合物
（「マイティ１５０」ｌ ｒマイティ１００Ｊ花王■商
品）トリメチロールメラミンモノスルフォン酸塩（「メ
ルメントＦ−１０Ｊ昭和電工■商品）等を使用できる。The blast furnace quenched slag used as fine aggregate has a particle size of 70 am to 5.0 m. If the thickness is less than 70 μm, the amount of water required to obtain good workability increases and cracks are likely to occur, and if the thickness is less than 5.0 m, the surface finish will deteriorate. As the water reducing agent, naphthalene sulfonate formalin condensate ("Mighty 150" L Mighty 100J Kao product), trimethylolmelamine monosulfonate ("Melment F-10J Showa Denko product"), etc. can be used.
次に本発明組成物の割合についてはセメント３０〜７０
重量％に対して高炉急冷スラグ微粉末７０〜３０重量％
を用いるものとする。高炉急冷スラグ微粉末が７０重量
％より多くなると強度発現が低下し、３０重量％以下で
は耐久性が低下する。Next, regarding the ratio of the composition of the present invention, cement is 30 to 70%.
70-30% by weight of blast furnace quenched slag powder
shall be used. If the blast furnace quenched slag fine powder exceeds 70% by weight, the strength development will decrease, and if it is below 30% by weight, the durability will decrease.
マイカ粉末は５〜４０重量％を用いるものとする。マイ
カ粉末が５重量％以下では耐ひびわれ性が十分でなく４
０重量％以上では施工性が悪化する。高炉急冷スラグ細
骨材はセメント部１００重量部に対して１００〜３００
重量部用いるものとする。１００重量部以下ではひびわ
れが発生しやすく、３００重量部をこえると施工性、基
盤母材との接着性が悪化する。減水剤の使用量はセメン
ト部に対して固形分換算で２重量％以下とする。Mica powder shall be used in an amount of 5 to 40% by weight. If the mica powder is less than 5% by weight, the cracking resistance is insufficient.
If it is more than 0% by weight, workability deteriorates. The blast furnace quenched slag fine aggregate is 100 to 300 parts by weight per 100 parts by weight of the cement part.
Parts by weight shall be used. If it is less than 100 parts by weight, cracks are likely to occur, and if it exceeds 300 parts by weight, workability and adhesion to the base material will deteriorate. The amount of water reducing agent used shall be 2% by weight or less in terms of solid content based on the cement part.
２重量％より多くしても減水効果は変らない。Even if the amount is more than 2% by weight, the water reduction effect remains the same.
その他、保水剤としてメチルセルロースなどが使用でき
る。In addition, methylcellulose and the like can be used as a water retention agent.
作 用
従来のモルタルのひびわれ防止方法はペースト組織の硬
化乾燥収縮を小さくするという考えが主であるの１で対
して本発明のモルタル組成物は複合材料的見地から、各
構成材料を検討しひびわれを低減させたものである。Function: Conventional methods for preventing mortar from cracking are mainly based on the idea of reducing the hardening and drying shrinkage of the paste structure.In contrast, the mortar composition of the present invention is designed to prevent cracking by considering each constituent material from a composite material perspective. This is a reduction in
すなわち従来のモルタルはセメントペーストの乾燥収縮
を骨材によって緩和させたものであるがこの方法はモル
タル欠陥部に応力が発生すると集中クラツクが生ずる。That is, in conventional mortar, the drying shrinkage of cement paste is alleviated by the use of aggregate, but with this method, concentrated cracks occur when stress is generated in the defective part of the mortar.
そこでファイバー（でよりモルタルマトリックスを補強
しひびわれを分散させる方法も試みられたが、施工性に
難があることから一般的には用いられなかった。Therefore, attempts were made to strengthen the mortar matrix with fibers to disperse cracks, but this method was not generally used due to difficulties in workability.
本発明はモルタル仕上げが材料をコテで引き伸ばしある
いは、吹付により圧着させる施工法をとることからフレ
ーク状の形状をもつマイカ粉末１（着目しこれをモルタ
ルに混入した。モルタル混練時ランダム配向して（・た
マイカ粉末はコテ仕上げあるいは吹付けにより厚さ方向
に重なりあって２次元配向し、これが水平方向のモルタ
ルマトリックス収縮を補償する。さらにマイカ粉末とモ
ルタルマトリックスの付着力も重要であることから、セ
メントの一部を高炉スラグ微粉末でおきかえ減水剤を併
用すること１でより水利反応性を高め、水セメント部比
を小さくしてマトリックス中の欠陥′を減少させ、緻密
なペースト組織を作すマイカ粉末とモルタルの付着力を
強化した。The present invention focuses on mica powder 1, which has a flake-like shape, and mixes it into the mortar.Since mortar finishing involves stretching the material with a trowel or compressing it by spraying, we focused on mica powder 1, which has a flake-like shape, and mixed it into the mortar.・The mica powder overlaps in the thickness direction by troweling or spraying and becomes two-dimensionally oriented, which compensates for the shrinkage of the mortar matrix in the horizontal direction.Furthermore, since the adhesion between the mica powder and the mortar matrix is also important, By replacing a part of the cement with powdered blast furnace slag and using a water reducing agent, we can further increase the water reactivity, reduce the water-to-cement ratio, reduce defects in the matrix, and create a dense paste structure. Strengthened the adhesion between mica powder and mortar.
高炉スラグ微粉末は表面活性が大きいため、マイカ表面
Ｃ（強く吸着し、これがモルタルとの付着力に寄与する
と同時１ｃ Ｎに左官材としての根本的な機能、即ち基
盤母材との接着性、硬化後の物理的強度、耐候性の飛躍
的な向上をもたらすものと考える。次（（施工性である
が、マイカ粉末はフレーク状の形状をもち表面がなめら
かであることがら線状の繊維と比較して作業性は良好で
あり、保水性があるため可使時間が長いという長所もあ
る。Blast furnace slag fine powder has a high surface activity, so it strongly adsorbs to the mica surface, which contributes to its adhesion to mortar. We believe that it will bring about a dramatic improvement in physical strength and weather resistance after curing.Next ((In terms of workability, mica powder has a flake-like shape and a smooth surface, so it is difficult to form linear fibers.) In comparison, it has good workability and has the advantage of a long pot life due to its water retention properties.
しかし壁面１（施工した場合、下地の条件によってはマ
イカのもつ滑り性によってだれ落ちが生ずる場合がある
。そこで細骨材には高炉急冷スラグを用いた。However, when wall surface 1 is constructed, dripping may occur depending on the conditions of the substrate due to the slipperiness of mica.Therefore, rapidly cooled blast furnace slag was used as the fine aggregate.
高炉急冷スラグ細骨材は粒径が角ばっていることと吸水
性があることから、モルタルのだれ落ちを解消し合せて
高炉スラグ細骨材とセメントペースト部が細骨材表面の
潜在水硬性により化学的に結合するため、ひびわれの原
因となる欠陥が少ないモルタル組織を作る。本発明はこ
のような作用により、ひびわれの発生が少なくかつ施工
性が良好で耐久性の高いモルタル組成物を達成できた。Rapidly cooled blast furnace slag fine aggregate has angular particle size and water absorption properties, so it eliminates dripping of mortar, and the blast furnace slag fine aggregate and cement paste part have a potential hydraulic hardness on the surface of the fine aggregate. This creates a mortar structure with fewer defects that can cause cracks. Due to these effects, the present invention has been able to achieve a mortar composition that is less prone to cracking, has good workability, and is highly durable.
実 施 例 以下実施例をあげて説明する。Example This will be explained below by giving examples.
実施例１
表−ＩＶＣ記載したごとく早強ポルトランドセメント５
０．ｉｉｉ部、急冷高炉スラグ微粉末５０重量部、ナフ
タリンスルフオン酸ホルマリン縮合物０７５重量部、平
均粒径３５０１１ｍのマイカ粉末１゜重量部、高炉急冷
スラグ細骨材２０ｏｉｔ部を均一に混合したモルタル組
成物である。Example 1 Early strength Portland cement 5 as described in Table-IVC
0. Part iii, 50 parts by weight of pulverized quenched blast furnace slag powder, 075 parts by weight of naphthalene sulfonic acid formalin condensate, 1 part by weight of mica powder with an average particle size of 35011 m, and 20 parts of quenched blast furnace slag fine aggregate are uniformly mixed in a mortar composition. It is a thing.
比較例！
表−１に記載したごとく普通ポルトランドセメント１０
０重量部、海砂２００重量部を均一に混合した組成物で
ある。Comparative example! Ordinary Portland cement 10 as listed in Table-1
This is a composition in which 0 parts by weight of sea sand and 200 parts by weight of sea sand are uniformly mixed.
比較例２〜９
表−１に記載したごとく普通ポルトランドセメント、海
砂、マイカ粉末について、マイカ粉末の添加量と平均粒
径を変えて均一に混合した組成物である。実施例および
比較例についてフロー値、施工性、仕上り、クラック発
生状況、接着強度、透水量の試験を行なった。結果を表
−１に示した。Comparative Examples 2 to 9 As shown in Table 1, these are compositions in which ordinary Portland cement, sea sand, and mica powder are uniformly mixed while changing the amount of mica powder added and the average particle size. The examples and comparative examples were tested for flow value, workability, finish, crack occurrence, adhesive strength, and water permeability. The results are shown in Table-1.
試験方法
Ｏフロー値 ＪＩＳ Ｒ５２０１に準拠０施工性
あらかじめ製作した９００ｍｍＸ１８００＋ｍのモルタ
ル基盤に厚さ約５日で表−１の配合のモルタルを施工し
た。Test method: Flow value: Based on JIS R5201: 0: Workability: A mortar having a composition shown in Table 1 was applied to a mortar base of 900 mm x 1800+ m, which had been prepared in advance, to a thickness of about 5 days.
○仕上り、クラック発生状況
上記のごとく施工したモルタルの表面てついて仕上り及
びクラック発生状況を観察した。○Finish and crack occurrence The surface finish and crack occurrence of the mortar constructed as described above were observed.
０接着強度
コンクリート平板にエチレン酢酸ビニルエマルジ１ン（
固形分４５％）の３倍液を！５０り／ｒｒ？塗布し、べ
とつきが無くなった時点でモルタルを施工した。材令経
過後ダイヤモンドカッターでダニ００間の切込みを下地
に達するまで入れ、エポキシ樹脂接着剤でグｌ００Ｗ＋
の鋼製アタッチメントを取付け、引張試験機により接着
強さを測定した。1 ethylene vinyl acetate emulsion (
3 times the solid content (45%)! 50ri/rr? After applying the mortar, mortar was applied once it was no longer sticky. After the material has aged, use a diamond cutter to make cuts between the 00 ticks until it reaches the base, and glue with epoxy resin adhesive 100W+.
A steel attachment was attached, and the adhesive strength was measured using a tensile tester.
○透水量 ＪＩＳ Ａ１４０４に準拠発明の効果
表−１に記載したごとく、本発明はひびわれの発生が少
なく、施工性が良好で高い耐久性を持つという効果を有
する。○Water permeability Compliant with JIS A1404 As described in Table 1 of Effects of the Invention, the present invention has the effects of less occurrence of cracks, good workability, and high durability.
Claims (4)
高炉急冷スラグ微粉末７０〜３０重量％の割合からなる
セメント１００重量部。(1) 100 parts by weight of cement consisting of 30-70% by weight of cement and 70-30% by weight of blast furnace quenched slag fine powder with a particle size of 15 μm or less.
材１００〜３００重量部。(2) 100 to 300 parts by weight of blast furnace quenched slag fine aggregate with a particle size of 70 μm to 5.0 mm.
重量部。(3) Mica powder 5 to 40 with a particle size of 30 μm to 3.0 mm
Weight part.
。 よりなるモルタル組成物。(4) A water reducing agent with a solid content of 2% by weight or less based on the cement part. A mortar composition consisting of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62331664A JPH01308852A (en) | 1987-12-28 | 1987-12-28 | Mortar composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62331664A JPH01308852A (en) | 1987-12-28 | 1987-12-28 | Mortar composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01308852A true JPH01308852A (en) | 1989-12-13 |
Family
ID=18246198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62331664A Pending JPH01308852A (en) | 1987-12-28 | 1987-12-28 | Mortar composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01308852A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017505281A (en) * | 2014-01-10 | 2017-02-16 | ズュンフォラ、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツングＳｙｎｆｏｌａ Ｇｍｂｈ | Additive mixture for addition to a mixture of surface finishes and composite surface finish system formed therefrom |
-
1987
- 1987-12-28 JP JP62331664A patent/JPH01308852A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017505281A (en) * | 2014-01-10 | 2017-02-16 | ズュンフォラ、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツングＳｙｎｆｏｌａ Ｇｍｂｈ | Additive mixture for addition to a mixture of surface finishes and composite surface finish system formed therefrom |
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