JP2008169063A - Expanding material composition for preventing pop-out and cement hardened body formed using the same - Google Patents
Expanding material composition for preventing pop-out and cement hardened body formed using the same Download PDFInfo
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Abstract
Description
本発明は、ポップアウト防止材を含有してなるポップアウト防止用膨張材組成物およびそれを用いたセメント硬化体に関する。 TECHNICAL FIELD The present invention relates to an expansion material composition for preventing pop-out comprising a pop-out preventing material and a hardened cement body using the same.
従来、骨材性状の悪化やポンプ圧送の確保等から、コンクリート硬化体は、その製造時、コンクリートの所定のワーカビリティーを確保するために、必要以上の水量とセメントが使用され、乾燥収縮量が大きくなっている。
そのため、ひび割れを生じ、構造物の美観や耐久性を損なう場合があった。
この課題を解決するために、膨張材を使用する方法が提案されている。
Conventionally, due to the deterioration of aggregate properties and securing pumping, hardened concrete has been used with more water and cement than necessary to ensure the specified workability of the concrete, and the drying shrinkage is large. It has become.
For this reason, cracks may occur, which may impair the aesthetics and durability of the structure.
In order to solve this problem, a method using an expanding material has been proposed.
膨張材を使用した膨張コンクリ−トは、レデイ−ミクストコンクリ−トとして供給されることが多く、膨張材を生コンプラントで練り混ぜて調製されている。そして、よく分散された膨張コンクリ−トを得るために、混ぜ時間を延ばしたり、最適な膨張材の投入方法を選択したりしている。
しかしながら、膨張材の塊が少量でもコンクリ−ト中に存在すると、数日〜数年を経てコンクリ−トの表面付近でポップアウト現象を生じ、美観のみならず耐久性を損なうという課題があった。
これら、課題解決のために、種々膨張材の改良が試みられているが、条件によりポップアウト現象を生じる場合があるのが現状である（特許文献１、特許文献２、及び特許文献３参照）。
An expansion concrete using an expansion material is often supplied as a ready-mixed concrete, and is prepared by kneading the expansion material in a green plant. Then, in order to obtain a well-dispersed expansion concrete, the mixing time is extended, or an optimal expansion material charging method is selected.
However, if even a small amount of the expansion material is present in the concrete, a pop-out phenomenon occurs near the surface of the concrete after several days to several years, and there is a problem that not only the beauty but also the durability is impaired. .
In order to solve these problems, attempts have been made to improve various expansion materials, but there are cases where a pop-out phenomenon may occur depending on conditions (see Patent Document 1, Patent Document 2, and Patent Document 3). .
一方、リグニンスルホン酸カルシウムは、サルファイトパルプ廃液の塩置換、その他の化学処理、スラッジ分離、及び噴霧乾燥して得られる粉体であり、モルタルやコンクリートの減水剤、セメント、粘土、顔料、染料、石膏、及び掘削泥水等の分散剤、練炭やレンガなどの粘結剤又は粘結助剤、並びに、ボイラのスケ−ル除去剤等に使用されているリグニンスルホン酸塩の一種である。
本発明者は、流動性の改善や単位水量を低減するために、膨張材とリグニンスルホン酸カルシウムなどの減水剤を併用して、フローダウンやスランプロスの少ない、ワーカビリチーの良好な膨張材含有セメント組成物を提案したが、特定割合で、膨張材とリグニンスルホン酸カルシウムを併用することによって、ポップアウトを防止することを目的とするものではない（特許文献４参照）。
On the other hand, calcium lignin sulfonate is a powder obtained by salt substitution of sulfite pulp waste liquor, other chemical treatment, sludge separation, and spray drying. It is a water reducing agent for mortar and concrete, cement, clay, pigment, dye It is a kind of lignin sulfonate used in dispersants such as gypsum and drilling mud, binders or binders such as briquettes and bricks, boiler scale removers, and the like.
In order to improve fluidity and reduce unit water volume, the present inventor uses an expansion material and a water reducing agent such as calcium lignin sulfonate in combination with an expansion material-containing cement with good workability and low flow down and slump loss. Although the composition was proposed, it is not intended to prevent pop-out by using the expansion material and calcium lignin sulfonate together at a specific ratio (see Patent Document 4).
また、高吸水性樹脂は、自重の数百倍の水を吸水できる高分子で、水に膨潤してヒドロゲルを形成する。水を、形あるものとして保持し、吸水や保水に関する用途開発が進められている。具体的には、紙オムツ、化粧品、湿布剤、土壌改良剤、及びコンクリ−ト養生マットなどに使用されている。 The highly water-absorbent resin is a polymer that can absorb water several hundred times its own weight, and swells in water to form a hydrogel. Development of applications related to water absorption and water retention is being promoted while retaining water as a form. Specifically, it is used for paper diapers, cosmetics, poultices, soil conditioners, concrete curing mats, and the like.
数日〜数年を経てから、コンクリ−トの表面付近でポップアウト現象が生じる課題に対して、本発明者は、ポップアウト防止材を含有してなる特定のポップアウト防止用膨張材組成物を使用することによって、前記課題が解消できるという知見を得て、本発明を完成するに至った。 In response to the problem that a pop-out phenomenon occurs near the surface of a concrete after several days to several years, the present inventor has developed a specific pop-out preventing expansion material composition containing a pop-out preventing material. By using this, the inventors have obtained knowledge that the above problems can be solved, and have completed the present invention.
即ち、本発明は、膨張材とポップアウト防止材を含有してなり、膨張材とポップアウト防止材の合計100部中、膨張材が99.9〜98.0部であり、ポップアウト防止材が0.1〜2.0部であるポップアウト防止用膨張材組成物であり、ポップアウト防止材が、リグニンスルホン酸カルシウム及び／又は高吸水性樹脂を含有してなる該ポップアウト防止用膨張材組成物であり、セメントと該ポップアウト防止用膨張材組成物とを含有してなるセメント組成物であり、該ポップアウト防止用膨張材組成物が、セメントとポップアウト防止用膨張材組成物からなるセメント組成物100部中、３〜20部である該セメント組成物であり、セメント、膨張材、及びポップアウト防止材を含有してなり、膨張材とポップアウト防止材の合計100部中、膨張材が99.9〜98.0部、ポップアウト防止材が0.1〜2.0部であるセメント組成物であり、該セメント組成物を用いたセメント硬化体である。 That is, the present invention contains an expansion material and a pop-out prevention material, and the expansion material is 99.9 to 98.0 parts in a total of 100 parts of the expansion material and the pop-out prevention material, and the pop-out prevention material is 0.1 to 2.0. An expansion material composition for preventing pop-out, wherein the pop-out prevention material comprises calcium lignin sulfonate and / or a superabsorbent resin, and the expansion composition for preventing pop-out, and cement. A cement composition comprising the expansion material composition for preventing pop-out, wherein the expansion material composition for preventing pop-out comprises 100 parts of cement composition comprising cement and an expansion material composition for preventing pop-out. 3-20 parts of the cement composition, comprising cement, an expansion material, and a popout prevention material, and the expansion material is 99.9-98.0 parts in a total of 100 parts of the expansion material and the popout prevention material. ,pop Out preventing member is a cement composition is from 0.1 to 2.0 parts of a hardened cement body using the cement composition.
本発明のポップアウト防止用膨張材組成物を使用したセメント硬化体は、ポップアウトの生じないものとなり、耐久性があり、美観のあるものとなった。 The hardened cement body using the expansion material composition for preventing pop-out according to the present invention does not cause pop-out, has durability, and has a beautiful appearance.
以下、本発明を詳細に説明する。
本発明のコンクリートはセメントモルタルも含む場合がある。
Hereinafter, the present invention will be described in detail.
The concrete of the present invention may also contain cement mortar.
本発明のポップアウト防止用膨張材組成物（以下、単に膨張材組成物という）は、膨張材とポップアウト防止材とを含有するものである。 The expansion material composition for preventing pop-out of the present invention (hereinafter simply referred to as expansion material composition) contains an expansion material and a pop-out prevention material.
本発明で使用する膨張材としては、カルシウムサルホアルミネート系膨張材や石灰系膨張材等がある。
膨張材の粒度は特に限定されるものではないが、通常、ブレーン比表面積値(以下、ブレーン値という)2,000〜7,000cm2/gが好ましい。2,000cm2/g未満では未反応物が長期間残存して耐久性が低下するおそれがあり、7,000cm2/gを超えると水和反応が早く、所定の膨張が得られないおそれがある。
Examples of the expansion material used in the present invention include calcium sulfoaluminate-based expansion materials and lime-based expansion materials.
The particle size of the intumescent material is not particularly limited, but usually a Blaine specific surface area value (hereinafter referred to as a Blaine value) of 2,000 to 7,000 cm 2 / g is preferable. If it is less than 2,000 cm 2 / g, unreacted substances may remain for a long time and the durability may be lowered. If it exceeds 7,000 cm 2 / g, the hydration reaction may be fast and the predetermined expansion may not be obtained.
本発明で使用するポップアウト防止材は、リグニンスルホン酸カルシウム及び／又は高級水性樹脂を含有するものである。 The pop-out preventing material used in the present invention contains calcium lignin sulfonate and / or a higher aqueous resin.
一般に、リグニンスルホン酸塩は、ナトリウム塩とカルシウム塩があるが、本発明では、カルシウム塩でないと所用の性能が得られないので、リグニンスルホン酸カルシウムを使用する。 In general, lignin sulfonate has a sodium salt and a calcium salt. In the present invention, calcium lignin sulfonate is used because the desired performance cannot be obtained unless it is a calcium salt.
本発明で使用するリグニンスルホン酸カルシウム（以下、リグニンCaという）は、水分含有量が７％以下が好ましく、３％以下がより好ましい。
リグニンCaの使用量は、膨張材とリグニンCaの合計100部中、0.1〜2.0部が好ましい。0.1部未満ではポップアウト防止効果が得られないおそれがあり、2.0部を超えると強度の低下が大きくなるおそれがある。
The calcium lignin sulfonate (hereinafter referred to as lignin Ca) used in the present invention preferably has a water content of 7% or less, more preferably 3% or less.
The amount of lignin Ca used is preferably 0.1 to 2.0 parts in a total of 100 parts of the expansion material and lignin Ca. If it is less than 0.1 part, the pop-out prevention effect may not be obtained, and if it exceeds 2.0 part, the strength may be greatly reduced.
本発明で使用する高吸水性樹脂は、自重の数百倍の水を吸水できる高分子で、水に膨潤してヒドロゲルを形成する。水を、形あるものとして保持し、吸水や保水に関する用途開発が進められている。
高吸水性樹脂は、製造方法により、デンプン・アクリロニトリル系高吸水性樹脂、デンプン・アクリル酸系高吸水性樹脂、カルボキシルメチルセルロ−ス系高吸水性樹脂、ポリアクリル酸系高吸水性樹脂、及びビニルアルコ−ル・アクリル酸系高吸水性樹脂があり、これらのいずれの高吸水性樹脂も使用可能であり、カルシウム飽和水溶液中での吸水量が大きいものが好ましい。
高吸水性樹脂の粒度は、平均粒径20〜300μｍが好ましい。
高級水性樹脂の使用量は、膨張材と高級水性樹脂の合計100部中、0.1〜2.0部が好ましい。0.1部未満ではポップアウト防止効果が得られないおそれがあり、2.0部を超えるとポップアウト防止効果が変わらず経済的に無駄になるおそれがある。
The superabsorbent resin used in the present invention is a polymer that can absorb water several hundred times its own weight, and swells in water to form a hydrogel. Development of applications related to water absorption and water retention is being promoted while retaining water as a form.
Depending on the production method, the superabsorbent resin may be a starch / acrylonitrile superabsorbent resin, a starch / acrylic super absorbent polymer, a carboxymethyl cellulose super absorbent polymer, a polyacrylic super absorbent polymer, and There are vinyl alcohol / acrylic acid-based superabsorbent resins, and any of these superabsorbent resins can be used, and those having a large water absorption in a saturated calcium aqueous solution are preferred.
The average particle size of the superabsorbent resin is preferably 20 to 300 μm.
The amount of the high-grade aqueous resin used is preferably 0.1 to 2.0 parts in a total of 100 parts of the expansion material and the high-grade aqueous resin. If it is less than 0.1 part, the pop-out prevention effect may not be obtained, and if it exceeds 2.0 part, the pop-out prevention effect is not changed and there is a possibility that it is economically wasteful.
本発明の膨張材組成物は、膨張材と、リグニンCa及び／又は高吸水性樹脂を含有するポップアウト防止材とを含有する。
ポップアウト防止材は、水分含有ができるだけ少ないことが、膨張材の性能を保持させることから好ましい。
ポップアウト防止材は、膨張材によく分散していることが、ポップアウト防止上必要である。
ポップアウト防止材の使用量は、膨張材とポップアウト防止材からなる膨張材組成物100部中、0.1〜2.0部が好ましい。0.1部未満ではポップアウト防止効果が得られないおそれがあり、2.0部を超えると、強度の低下や流動性の低下が大きくなるおそれがあり、ポップアウト防止効果が変わらず経済的に無駄になるおそれがある。
The expansion material composition of the present invention contains an expansion material and a pop-out prevention material containing lignin Ca and / or a superabsorbent resin.
It is preferable that the pop-out prevention material has as little water content as possible because the performance of the expansion material is maintained.
It is necessary for pop-out prevention material to be well dispersed in the expansion material in order to prevent pop-out.
As for the usage-amount of a popout prevention material, 0.1-2.0 parts are preferable in 100 parts of expansion | swelling material compositions which consist of an expansion | swelling material and a popout prevention material. If it is less than 0.1 part, the pop-out prevention effect may not be obtained, and if it exceeds 2.0 part, the decrease in strength and fluidity may increase, and the pop-out prevention effect remains unchanged and is economically wasteful. There is a fear.
膨張材組成物の使用量は、セメントと膨張材組成物からなる結合材100部中、３〜20部が好ましく、５〜15部がより好ましい。３部未満では収縮低減効果が少なくなるおそれがあり、20部を超えると膨張量が大きすぎて強度が低下するおそれがある。 The amount of the expansion material composition used is preferably 3 to 20 parts, more preferably 5 to 15 parts, in 100 parts of the binder composed of cement and the expansion material composition. If it is less than 3 parts, the shrinkage reduction effect may be reduced, and if it exceeds 20 parts, the amount of expansion is too large and the strength may be reduced.
ここで、セメントとしては、低熱、普通、早強、及び超早強等の各種ポルトランドセメント、これらのポルトランドセメントに、高炉スラグやフライアッシュなどを混合した各種混合セメントなどが使用可能である。
セメントの使用量は、モルタル又はコンクリートの配合等により異なるが、単位量で270〜1,000kg/m3が好ましい。270kg/m3未満では構造上の耐久性や強度が得られなくなるおそれがあり、1,000kg/m3を超えると作業性が得られなくなるおそれや、水和発熱や乾燥収縮によるひび割れを生じるおそれがある。
Here, as the cement, various portland cements such as low heat, normal, early strength, and ultra early strength, and various mixed cements obtained by mixing blast furnace slag, fly ash, and the like with these portland cements can be used.
The amount of cement used varies depending on the blending of mortar or concrete, but is preferably 270 to 1,000 kg / m 3 in unit amount. If it is less than 270 kg / m 3 , structural durability and strength may not be obtained. If it exceeds 1,000 kg / m 3 , workability may not be obtained, and cracking due to hydration heat generation and drying shrinkage may occur. is there.
水の使用量は、モルタル又はコンクリートの配合等によってかわり、特に限定されるものではないが、120〜600kg/m3が好ましい。120kg/m3未満では骨材の表面水管理を厳しくしなければならない場合や、特殊な減水剤を併用しなければならない場合などがあり、施工性が悪化するおそれがある。また、600kg/m3を超えると長期の耐久性が得にくくなるおそれや所定の構造物としての強度が得にくくなるおそれがある。 The amount of water used varies depending on the blending of mortar or concrete and is not particularly limited, but is preferably 120 to 600 kg / m 3 . If it is less than 120 kg / m 3, there are cases where it is necessary to strictly control the surface water of the aggregate and there are cases where a special water reducing agent must be used in combination, which may deteriorate the workability. On the other hand, if it exceeds 600 kg / m 3 , long-term durability may be difficult to obtain, and strength as a predetermined structure may be difficult to obtain.
本発明のセメント組成物、特に、膨張材組成物の混合方法は、膨張材とポップアウト防止材とがよく分散できれば、特に限定されるものではなく、通常のミキサ、ブレンダーが使用可能である。 The mixing method of the cement composition of the present invention, particularly the expansion material composition is not particularly limited as long as the expansion material and the pop-out prevention material can be well dispersed, and ordinary mixers and blenders can be used.
以下、本発明を実験例に基づいてさらに説明する。 Hereinafter, the present invention will be further described based on experimental examples.
実験例１
ポップアウト現象は、膨張材の塊が、モルタルやコンクリート中で吸水し、固まり、分散せずに、長時間の膨張により生じる。そのため、プレスした成形体が、水中で崩壊しやすいものは、分散して塊が生じず、ポップアウトが生じないことから、本発明のポップアウト防止材の効果を迅速に確認する方法として下記の試験方法を行った。
表１に示す膨張材と、膨張材とポップアウト防止材からなる膨張材組成物100部中、表１に示すポップアウト防止材を混合した粉体を、φ19ｍｍの円柱型に入れ、２分間、プレス圧15.9N/mm2でプレスして成形体を作製した。
作製した成形体の崩壊までの時間と金網中に残り、吸水した成形体の量を測定した。結果を表１に併記する。
比較として、リグニンスルホン酸ナトリウム（以下、リグニンNaという）やポリカルボン酸カルシウムをポップアウト防止材として使用して同様に実験を行った。結果を表１に併記する。
Experimental example 1
The pop-out phenomenon is caused by long-time expansion of the expansion material lump, which absorbs water in mortar or concrete and does not solidify or disperse. Therefore, the pressed molded body, which is easily disintegrated in water, is dispersed and does not form a lump and does not cause pop-out, so the method for quickly confirming the effect of the pop-out prevention material of the present invention is as follows. The test method was performed.
In 100 parts of an expansion material composition comprising the expansion material shown in Table 1 and the expansion material and the pop-out prevention material, a powder mixed with the pop-out prevention material shown in Table 1 is placed in a cylindrical shape of φ19 mm for 2 minutes. A compact was produced by pressing at a press pressure of 15.9 N / mm 2 .
The time until collapse of the produced molded body and the amount of the molded body remaining in the wire mesh and absorbing water were measured. The results are also shown in Table 1.
For comparison, a similar experiment was conducted using sodium lignin sulfonate (hereinafter referred to as lignin Na) or calcium polycarboxylate as a pop-out prevention material. The results are also shown in Table 1.
＜使用材料＞
膨張材α ：カルシウムサルホアルミネート系膨脹材、市販品
膨張材β ：石灰系膨張材、市販品
ポップアウト防止材ａ：リグニンCa、粉体、市販品、平均分子量51,000
ポップアウト防止材ｂ：リグニンCa、粉体、市販品、平均分子量11,000
ポップアウト防止材ｃ：リグニンCa、粉体、市販品、平均分子量 5,100
ポップアウト防止材ｄ：リグニンNa、粉体、市販品、平均分子量11,000
ポップアウト防止材ｅ：リグニンNa、粉体、市販品、平均分子量 5,100
ポップアウト防止材ｆ：ポリカルボン酸カルシウム、粉体、市販品
<Materials used>
Expansion material α: calcium sulfoaluminate-based expansion material, commercial product expansion material β: lime-based expansion material, commercial product pop-out prevention material a: lignin Ca, powder, commercial product, average molecular weight 51,000
Pop-out prevention material b: Lignin Ca, powder, commercial product, average molecular weight 11,000
Pop-out prevention material c: lignin Ca, powder, commercial product, average molecular weight 5,100
Pop-out prevention material d: lignin Na, powder, commercial product, average molecular weight 11,000
Pop-out prevention material e: lignin Na, powder, commercial product, average molecular weight 5,100
Pop-out prevention material f: calcium polycarboxylate, powder, commercial product
＜測定方法＞
崩壊までの時間：２リットルのポリ容器に水1.2リットルを入れ、水を撹拌しながら、作製した成形体を入れた金網を、２分間浸漬し、接水から、成形体が崩れ、金網内に残らなくなる時間
残存量 ：金網中に残った成形体の質量／金網中に入れた成形体全体の質量
<Measurement method>
Time to collapse: Put 1.2 liters of water in a 2 liter plastic container, stir the water and immerse the wire mesh containing the prepared compact for 2 minutes. Remaining amount of time that does not remain: mass of the molded body remaining in the wire mesh / mass of the entire molded body placed in the wire mesh
実験例２
膨張材βを使用し、膨張材とポップアウト防止材の合計100部中、表２に示すポップアウト防止材を用いたこと以外は実験例１と同様に行った。結果を表２に併記する。
Experimental example 2
The experiment was performed in the same manner as in Experimental Example 1 except that the expansion material β was used and the popout prevention material shown in Table 2 was used in 100 parts in total of the expansion material and the popout prevention material. The results are also shown in Table 2.
＜使用材料＞
ポップアウト防止材ｇ：デンプン・アクリロニトリル系高吸水性樹脂、市販品、粒度20〜50μｍ
ポップアウト防止材ｈ：デンプン・アクリル酸系高吸水性樹脂、市販品、粒度50〜150μｍ
ポップアウト防止材ｉ：ポリアクリル酸系高吸水性樹脂、市販品、粒度150〜300μｍ
<Materials used>
Anti-pop-out material g: starch / acrylonitrile-based superabsorbent resin, commercially available, particle size 20-50 μm
Pop-out prevention material h: starch / acrylic acid-based superabsorbent resin, commercially available product, particle size of 50 to 150 μm
Pop-out prevention material i: polyacrylic acid-based superabsorbent resin, commercially available product, particle size of 150 to 300 μm
実験例３
膨張材βと、膨張材組成物100部中、表３に示すポップアウト防止材とからなる膨張材組成物を使用して、実験例１と同様に成形品を作製した。
セメント93.4部、水54部、減水剤0.25部、細骨材260部、及び粗骨材337部のコンクリ−ト配合でコンクリートを練り混ぜた中に、作製した成形品を、セメントと膨張材組成物からなる結合材100部中、膨張材組成物として6.6部となるように、壊れないようにバラバラに分散して押し込み、２分後に、30秒練り混ぜた。
練り混ぜたコンクリ−トを用いて、40×40×10cmの型枠に打設した。
翌日脱枠し、20℃水中養生を行い、ポップアウトの発生状況を観察した、結果を表４に併記する。
Experimental example 3
A molded article was produced in the same manner as in Experimental Example 1 using an expanding material composition composed of the expanding material β and the pop-out preventing material shown in Table 3 in 100 parts of the expanding material composition.
Cement and expansive material composition were prepared by mixing concrete with concrete composition of 93.4 parts cement, 54 parts water, 0.25 parts water reducing agent, 260 parts fine aggregate, and 337 parts coarse aggregate. In 100 parts of the binding material made of a product, it was dispersed and pressed in such a way that it would not break, so that it would be 6.6 parts as an expansion material composition, and kneaded for 30 seconds after 2 minutes.
Using the kneaded concrete, it was placed in a 40 × 40 × 10 cm mold.
The next day, the frame was removed, and 20 ° C water curing was performed, and the occurrence of pop-out was observed. The results are also shown in Table 4.
＜使用材料＞
セメント ：普通ポルトランドセメント
細骨材 ：川砂、密度2.57g/cm3、粗粒率2.80
粗骨材 ：川砂利、５〜25mm、密度2.67g/cm3、粗粒率6.82
減水剤 ：ＡＥ減水剤、リグニンスルホン酸カルシウム塩系、市販品
<Materials used>
Cement: Ordinary Portland cement fine aggregate: River sand, density 2.57g / cm 3 , coarse grain ratio 2.80
Coarse aggregate: River gravel, 5-25mm, density 2.67g / cm 3 , coarse grain rate 6.82
Water reducing agent: AE water reducing agent, calcium lignin sulfonate, commercial product
＜測定方法＞
ポップアウト発生時期：平滑なコンクリート表面が盛り上がり、ポップアウトが生じるまでの時間
<Measurement method>
Pop-out occurrence time: Time until the smooth concrete surface rises and pop-out occurs
実験例４
膨張材と、膨張材組成物100部中、表４に示すポップアウト防止材とからなる膨張材組成物を調製したこと以外は実験例３と同様に行った。結果を表４に併記する。
Experimental Example 4
It was carried out in the same manner as in Experimental Example 3 except that an expansion material composition consisting of the expansion material and the pop-out prevention material shown in Table 4 in 100 parts of the expansion material composition was prepared. The results are also shown in Table 4.
実験例５
膨張材β99.5部とポップアウト防止材ａ0.5部とからなる膨張材組成物を使用して、実験例１と同様に成形品を作製した。
セメントと、結合材100部中、表５に示す膨張材組成物量となるように、作製した成形品を配合したこと以外は実験例３と同様に行った。結果を表５に併記する。
Experimental Example 5
A molded product was produced in the same manner as in Experimental Example 1 using an expanding material composition consisting of an expanding material β99.5 parts and a pop-out prevention material a0.5 parts.
The same procedure as in Experimental Example 3 was performed except that the produced molded product was blended so that the amount of the expansion material composition shown in Table 5 was obtained in 100 parts of cement and binder. The results are also shown in Table 5.
Claims (7)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130237A (en) * | 2015-07-08 | 2015-12-09 | 新疆中丹富兴新材料技术有限公司 | Cement base material expanding agent and preparation method thereof |
| JP2016079066A (en) * | 2014-10-17 | 2016-05-16 | デンカ株式会社 | Expanding material composition for preventing pop-out |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10226549A (en) * | 1996-12-13 | 1998-08-25 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JPH11302047A (en) * | 1998-04-23 | 1999-11-02 | Denki Kagaku Kogyo Kk | Expansive material composition and expansive cement composition |
-
2007
- 2007-01-10 JP JP2007002371A patent/JP2008169063A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10226549A (en) * | 1996-12-13 | 1998-08-25 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JPH11302047A (en) * | 1998-04-23 | 1999-11-02 | Denki Kagaku Kogyo Kk | Expansive material composition and expansive cement composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016079066A (en) * | 2014-10-17 | 2016-05-16 | デンカ株式会社 | Expanding material composition for preventing pop-out |
| CN105130237A (en) * | 2015-07-08 | 2015-12-09 | 新疆中丹富兴新材料技术有限公司 | Cement base material expanding agent and preparation method thereof |
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