JPH0632638A - Water-retaining agent for blending cement-based composition - Google Patents
Water-retaining agent for blending cement-based compositionInfo
- Publication number
- JPH0632638A JPH0632638A JP21456792A JP21456792A JPH0632638A JP H0632638 A JPH0632638 A JP H0632638A JP 21456792 A JP21456792 A JP 21456792A JP 21456792 A JP21456792 A JP 21456792A JP H0632638 A JPH0632638 A JP H0632638A
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- Prior art keywords
- water retention
- cement
- water
- concrete
- mortar
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，混合物の保水性及び硬
化物の圧縮歪み，弾力性に優れた，セメント系組成物混
合用の保水剤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water retention agent for mixing a cement composition, which is excellent in water retention of a mixture and compression strain and elasticity of a cured product.
【０００２】[0002]
【従来技術】セメント系組成物としては，例えば，コン
クリート，モルタル等がある。コンクリートは，一般
に，セメントに砂利，その他の骨材等を混合したもので
ある。また，モルタルは，一般に，セメントに砂，その
他の骨材等を混合したものである。そして，セメント系
組成物は，必要量の水を混合し，硬化反応を行なわせて
硬化させる。2. Description of the Related Art Examples of cementitious compositions include concrete and mortar. Concrete is generally a mixture of cement and gravel or other aggregate. In addition, mortar is generally a mixture of cement and sand or other aggregate. Then, the cementitious composition is mixed with a required amount of water and a hardening reaction is performed to harden the cementitious composition.
【０００３】上記セメントとしては，普通ポルトランド
セメント，早強ポルトランドセメント，アルミナセメン
ト，ジェットセメント，速硬化セメント，特殊セメント
等の各種セメント及びこれらの混合物を用いる。しかし
ながら，上記セメント組成物は，その硬化に至る過程に
おいて，蒸散による水の損失が大きい場合には，硬化物
の表面において，硬化不良を生じる場合がある。As the above-mentioned cement, various kinds of cement such as ordinary Portland cement, early-strength Portland cement, alumina cement, jet cement, quick-setting cement, and special cement, and mixtures thereof are used. However, the above cement composition may cause curing failure on the surface of the cured product when water loss due to transpiration is large in the process leading to its curing.
【０００４】そのため，上記硬化物は所定以上の強度が
得られず，特に厚さが１０ｍｍ以下の場合には，その強
度の低下が顕著である。それ故，かかる硬化物は，保水
性に優れず，舗道用敷物，建築用床材等の用途に適さな
い場合がある。上記硬化不良の原因である水蒸発を防止
する第１の方法としては，上記硬化物の半硬化時に水で
濡らした筵やこも（シート状物）によって，その表面を
覆う手段がある。Therefore, the above-mentioned cured product does not have a strength higher than a predetermined value, and particularly when the thickness is 10 mm or less, the decrease in the strength is remarkable. Therefore, such a cured product is not excellent in water retention and may not be suitable for applications such as pavement rugs and building flooring materials. As a first method for preventing the evaporation of water, which is the cause of the curing failure, there is a means for covering the surface of the cured product with a basket or a sponge (sheet-like product) that has been wet with water during semi-curing.
【０００５】しかしながら，この方法は，作業者の勘や
経験によるところが大きく，施工使用時にバラツキを生
じ易く，作業が煩雑である。そこで，第２の方法とし
て，硬化物の表面に合成ゴムラテックス又はエマルジョ
ン乳剤など液状物を散布し，硬化物表面に薄膜を形成す
る水蒸発防止方法がある。また，第３の方法として，保
水性を有するメチルセルローズ（商品名メトローズ）を
セメント系組成物中に，予め，混合しておく方法があ
る。However, this method is largely dependent on the intuition and experience of the operator, and variations are likely to occur during construction and use, and the work is complicated. Therefore, as a second method, there is a water evaporation preventing method in which a liquid material such as synthetic rubber latex or emulsion emulsion is sprayed on the surface of the cured product to form a thin film on the surface of the cured product. Further, as a third method, there is a method of previously mixing water-retaining methyl cellulose (trade name: METOLOSE) into the cement composition.
【０００６】[0006]
【解決しようとする課題】しかしながら，上記従来技術
には，次の問題点がある。即ち，第２の方法は，ゴムラ
テックス等を比較的多量に混合しなければ，保水性が充
分得られない。反面，多量に混合すると増粘過剰とな
り，施工仕上げ時におけるコテ離れ性が悪くなる。ま
た，コスト高である。また，第３の方法は，セメント系
組成物中に水を混合すると増粘過剰となり，コテ離れ性
が悪くなる。また，モルタル，コンクリートの流動性，
脱泡性が悪くなる。そのため，コンクリート等の打設や
仕上げ作業に支障を生じる。However, the above-mentioned conventional technique has the following problems. That is, in the second method, sufficient water retention cannot be obtained unless a relatively large amount of rubber latex or the like is mixed. On the other hand, if a large amount is mixed, the viscosity will increase excessively, and the iron separation property at the time of construction finishing will deteriorate. In addition, the cost is high. Further, in the third method, when water is mixed in the cementitious composition, the viscosity becomes excessive and the iron separation property deteriorates. Also, the fluidity of mortar and concrete,
Defoaming property deteriorates. As a result, this will hinder the placement and finishing of concrete.
【０００７】[0007]
【課題の解決手段】本発明は，セメント系組成物と混合
するための保水剤であって，該保水剤はゴム発泡体，プ
ラスチック発泡体等の発泡弾性材を粉砕した発泡粉砕物
よりなることを特徴とするセメント系組成物混合用の保
水剤にある。本発明において最も注目すべきことは，保
水材は発泡弾性材を粉砕した発泡粉砕物よりなることに
ある。The present invention relates to a water retention agent for mixing with a cementitious composition, wherein the water retention agent comprises a foamed pulverized product obtained by pulverizing a foamed elastic material such as a rubber foam or a plastic foam. And a water retention agent for mixing a cementitious composition. What is most noticeable in the present invention is that the water-retaining material is a crushed product obtained by crushing a foamed elastic material.
【０００８】発泡弾性材としては，例えばゴム発泡体，
プラスチック発泡体等を用いる。上記発泡粉砕物は，上
記発泡弾性材の粉砕時において，その独立気泡体の一部
が破壊されて連続気孔状態に変化したもの（図１参照）
を用いることが好ましい。これにより，セメント系組成
物を使用する際における保水力が増大し，保水性が向上
する。上記保水剤は，例えば舗道用敷物，庭園用踏み
石，ホテルやステーション等の建築用床材，道路，船舶
デッキ用のコンクリート又はモルタルに対して混合す
る。As the foamed elastic material, for example, a rubber foam,
A plastic foam or the like is used. The foamed pulverized product is one in which a part of the closed cells are destroyed during the pulverization of the foamed elastic material and the state is changed to an open pore state (see FIG. 1).
Is preferably used. This increases the water retention capacity when using the cementitious composition and improves the water retention. The water retention agent is mixed with, for example, pavement rugs, garden stepping stones, building flooring materials such as hotels and stations, roads, concrete or mortar for ship decks.
【０００９】上記保水剤は，セメント系組成物と混合す
る。セメント系組成物としては，セメントと砂利とその
他の混和物からなるコンクリート又はセメントと砂とそ
の他の混和物からなるモルタルがある。また，保水剤
は，上記コンクリート又はモルタルに天然ゴムラテック
ス，合成ゴムラテックス，合成樹脂エマルジョン，パウ
ダーエマルジョン剤等のポリマー成分を添加したポリマ
ーコンクリート又はポリマーセメントモルタルに混合す
ることもできる。The water retention agent is mixed with the cement composition. Examples of the cement-based composition include concrete made of cement, gravel, and other admixtures, and mortar made of cement, sand, and other admixtures. The water retention agent can also be mixed with polymer concrete or polymer cement mortar in which a polymer component such as natural rubber latex, synthetic rubber latex, synthetic resin emulsion or powder emulsion agent is added to the concrete or mortar.
【００１０】ここで，パウダーエマルジョン剤とは，パ
ウダー状態でセメント系組成物に混合し，水の添加によ
りエマルジョン状態になるものをいう。それ故，保水剤
は，コンクリート又はモルタル施工使用時における保水
性と保水剤自身がゴム弾性を有するため，硬化物の圧縮
歪み，弾力性が優れた，セメント組成物と混合するため
の混和剤として使用できる。Here, the powder emulsion agent means an agent which is mixed with a cement composition in a powder state and becomes an emulsion state by adding water. Therefore, the water retention agent is an admixture for mixing with a cement composition, which has excellent compressive strain and elasticity of the hardened material because the water retention agent and the water retention agent itself have rubber elasticity when used in concrete or mortar construction. Can be used.
【００１１】[0011]
【作用及び効果】本発明は，前記組成により，セメント
系組成物と保水剤との混合物を構成している。そのた
め，施工使用時の保水性，上記硬化物の圧縮歪み，弾力
性に優れた，セメント系組成物混合用の保水剤を提供す
ることができる。上記のごとく，硬化物の保水性及び弾
力性が優れている理由としては，次のように考えられ
る。FUNCTION AND EFFECT According to the present invention, the above composition constitutes a mixture of the cementitious composition and the water retention agent. Therefore, it is possible to provide a water retention agent for mixing cementitious compositions, which is excellent in water retention during construction, compression strain of the cured product, and elasticity. As described above, the reason why the cured product has excellent water retention and elasticity is considered as follows.
【００１２】即ち，上記保水剤としての発泡粉砕物は，
一般に多孔質で連続状気孔を有する（図１参照）。その
ため，施工使用時においては，多数の連続状気孔内に水
が侵入し保持される。そして，この水が徐々に硬化物の
表面に侵出してきて，セメント系組成物の硬化反応時に
おいて，有効に利用される。また，保水剤自身がゴム弾
性を有するため，硬化物も弾性を有する。That is, the foamed pulverized product as the water retention agent is
It is generally porous and has continuous pores (see FIG. 1). Therefore, during construction use, water penetrates and is retained in a large number of continuous pores. Then, this water gradually leaches out onto the surface of the hardened material and is effectively used during the hardening reaction of the cementitious composition. Further, since the water retention agent itself has rubber elasticity, the cured product also has elasticity.
【００１３】一方，上記発泡粉砕物とポリマー成分とを
混合したポリマーコンクリート又はポリマーセメントモ
ルタルにおいては，連続状気孔と弾力性のある結合剤と
してのゴムラテックス等のポリマー成分が相乗的に作用
して，圧縮強度，圧縮歪み等に関連して弾力性が一層向
上する。また，上記保水剤としての発泡粉砕物は，増粘
作用が少ないため，施工使用時のコテ離れ性が良い。そ
のため，施工作業性に優れる。一方，上記発泡粉砕物は
優れた弾力性を有するため，適度なクッション性を有す
る有機系骨材としての機能を有する。On the other hand, in the polymer concrete or polymer cement mortar in which the foamed pulverized product and the polymer component are mixed, the continuous pores and the polymer component such as rubber latex as an elastic binder act synergistically. , Further improves elasticity in relation to compressive strength, compressive strain, etc. Further, since the foamed and pulverized product as the water retention agent has little thickening effect, it has a good iron separation property during construction use. Therefore, the workability is excellent. On the other hand, since the foamed pulverized product has excellent elasticity, it has a function as an organic aggregate having an appropriate cushioning property.
【００１４】それ故，コンクリート又はモルタルに混合
される砂や砂利に加えて，保水性，弾力性を有する骨材
がセメント系組成物中に混合されることになる。その結
果，コンクリート又はモルタルを主原料とする硬化物の
表面にはクラック等の欠陥を生ずることがなく，施工使
用時におけるコテ仕上げ性及びコテ離れ性が良好とな
る。それ故，本発明によれば，硬化物が保水性，圧縮歪
み，弾力性に優れた，セメント系組成物混合用の保水剤
を提供することができる。Therefore, in addition to sand and gravel mixed with concrete or mortar, an aggregate having water retention and elasticity is mixed in the cementitious composition. As a result, defects such as cracks do not occur on the surface of the cured product whose main raw material is concrete or mortar, and the trowel finishing property and trowel separation property during use are improved. Therefore, according to the present invention, it is possible to provide a water retention agent for mixing a cementitious composition, in which a cured product has excellent water retention, compressive strain, and elasticity.
【００１５】[0015]
【実施例】 実施例１〜６，比較例１〜８ 以下，本発明のセメント系組成物混合用の保水剤にかか
る実施例を，比較例と共に説明する。本例は，保水剤と
してゴム発泡体粉砕物を用いたものである。本例におい
ては，まずセメント系組成物と保水剤とを種々の割合で
混合し，これに水を混合し，ブロック状の硬化物を得
た。そして，この硬化物につき，保水性，圧縮強度，圧
縮歪み，曲げ強度などの諸物性を測定した。これらの結
果を，表１，表２に示す。Examples Examples 1 to 6 and Comparative Examples 1 to 8 Hereinafter, Examples of the water retention agent for mixing the cementitious composition of the present invention will be described together with Comparative Examples. In this example, a pulverized rubber foam material is used as a water retention agent. In this example, first, the cementitious composition and the water retention agent were mixed at various ratios, and water was mixed therein to obtain a block-shaped cured product. Then, with respect to this cured product, various properties such as water retention, compressive strength, compressive strain and bending strength were measured. The results are shown in Tables 1 and 2.
【００１６】上記保水率はＪＩＳＡ−６９０４，圧縮強
度はＪＩＳＡ−１１０８に準じて測定する。また，圧縮
歪みはダイヤルゲージ法，曲げ強度はＪＩＳＲ−５２０
１により測定した。なお，保水率の２分値とは，アスピ
レーターにより５０ｍｍＨｇで２分間吸引濾過した後の
重量減少率である。また，圧縮歪みの破壊時歪とは，直
径５ｃｍ，高さ１０ｃｍの供試体を圧縮し破壊した時の
変形歪である。次に，実施例１〜６，比較例１〜８につ
き，図１，図２及び表１を用いて説明する。The water retention rate is measured according to JISA-6904, and the compressive strength is measured according to JISA-1108. The compression strain is dial gauge method and the bending strength is JIS R-520.
1 was measured. The 2-minute value of the water retention rate is the weight reduction rate after suction filtration with an aspirator at 50 mmHg for 2 minutes. The strain at break of compressive strain is the deformation strain when a test piece having a diameter of 5 cm and a height of 10 cm is compressed and broken. Next, Examples 1 to 6 and Comparative Examples 1 to 8 will be described with reference to FIGS. 1 and 2 and Table 1.
【００１７】即ち，まず実施例１〜６において，普通ポ
ルトランドセメントとしては，石灰石，粘土，酸化鉄等
を主原料とし，これらを適当な割合に混合したものを高
熱で焼成した後に，適量の石膏を加えて微粉砕したもの
を用いる。上記４号珪砂としては，比重が２．５４のモ
ルタル用骨材を用いる。保水剤１１としては，図１に示
すごとく，ゴム発泡体の粉砕時において，その独立気泡
体の一部が破壊されて連続状気孔１１０の状態に変化し
たものを用いる。なお，図１において，符号１はセメン
ト系の混合物，１２は骨材，１３は普通ポルトランドセ
メントを示す。That is, first, in Examples 1 to 6, as ordinary Portland cement, limestone, clay, iron oxide, etc. were used as main raw materials, and a mixture of these in an appropriate ratio was fired at high heat, and then an appropriate amount of gypsum was obtained. And pulverize it. As the No. 4 silica sand, an aggregate for mortar having a specific gravity of 2.54 is used. As the water retention agent 11, as shown in FIG. 1, a material in which a part of the closed cells is broken and the state of the continuous pores 110 is changed when the rubber foam is crushed is used. In FIG. 1, reference numeral 1 is a cement-based mixture, 12 is an aggregate, and 13 is ordinary Portland cement.
【００１８】[0018]
【表１】 [Table 1]
【００１９】連続状気孔１１０は，図１に示すごとく，
上記混合物１において，保水剤１１は表面凹部１１１を
有し，またこれが内部気孔１１２と連結したものであ
る。また，保水剤１１の表面には小さな導管１１３を有
し，上記内部気孔１１２を有する。これに対し，比較例
の混合物４は，図５に示すごとく，上記ゴム無発泡体４
３が，上記連続状気孔を有しない。また，独立気孔も有
しない。The continuous pores 110, as shown in FIG.
In the mixture 1, the water retention agent 11 has a surface recess 111 and is connected to the internal pore 112. Further, the surface of the water retention agent 11 has a small conduit 113 and the internal pores 112. On the other hand, the mixture 4 of the comparative example is, as shown in FIG.
3 does not have the above continuous pores. It also has no independent pores.
【００２０】なお，図５において，符号４１は骨材，４
２は普通ポルトランドセメントを示す。また，上記ゴム
発泡体，ゴム無発泡体とも平均粒径が約１ｍｍのものを
用いる。なお，上記ゴム発泡体は，比重が約０．５５で
あるのに対し，上記ゴム無発泡体は約１．２５のものを
用いる。そのため，表１に示すごとく，実施例５におけ
るゴム発泡体が１３ｇと，比較例７におけるゴム無発泡
体が２９．５ｇとは，ほぼ体積が等しいものを用いる。In FIG. 5, reference numeral 41 is an aggregate and 4
2 indicates ordinary Portland cement. Further, both the rubber foam and the rubber-free foam have an average particle diameter of about 1 mm. The rubber foam has a specific gravity of about 0.55, while the non-rubber foam has a specific gravity of about 1.25. Therefore, as shown in Table 1, 13 g of the rubber foam in Example 5 and 29.5 g of the non-rubber foam in Comparative Example 7 have the same volume.
【００２１】即ち，ゴム発泡体１３ｇが２３．６４ｃｃ
であるのに対し，ゴム無発泡体２９．５ｇが２３．６ｃ
ｃである。また，これに対応して，上記４号珪砂を２４
０ｇ（９４．４９ｃｃ）を用いる。また，比較例２にお
いて，メトローズとしては，市販のメチルセルロースを
用いる。このメトローズは，保水性を高めるための前記
従来例（第３の方法）に相当するものである。なお，比
較例１〜８は，ゴム発泡体を混合することなく，ゴム無
発泡体が混合してある。そして，これらの配合量は，全
て重量部で示す。That is, 13 g of the rubber foam is 23.64 cc
In contrast, 29.5 g of non-foamed rubber is 23.6 c
c. In addition, in response to this, the above-mentioned No. 4 silica sand was added to 24
0 g (94.49 cc) is used. Further, in Comparative Example 2, as the Metrose, commercially available methyl cellulose is used. This Metroses corresponds to the above-mentioned conventional example (third method) for increasing the water retention. In Comparative Examples 1 to 8, the rubber non-foamed body was mixed without mixing the rubber foamed body. And these compounding amounts are all shown in parts by weight.
【００２２】表１，図２より知られるごとく，保水性に
関しては，本発明の実施例１〜６は，８５．４〜９２．
３％である。これに対し，比較例１〜８は，７８．２〜
８０．５％である。それ故，実施例１〜６の保水性は，
いずれも比較例１〜８よりも優れていることは明らかで
ある。圧縮強度に関しては，表１に示すごとく，実施例
１〜６は３０．２〜６７．２ｋｇ／ｃｍ2 であるのに対
し，比較例１〜８は３２．８〜１０６．４ｋｇ／ｃｍ2
である。この圧縮強度に関しては，比較例１〜８は，実
施例１〜６よりも一般に圧縮強度が小さいことがわか
る。As is known from Table 1 and FIG. 2, regarding the water retention, Examples 1 to 6 of the present invention are 85.4 to 92.
3%. On the other hand, Comparative Examples 1-8 are 78.2-
It is 80.5%. Therefore, the water retention properties of Examples 1 to 6 are
It is clear that all are superior to Comparative Examples 1-8. Regarding the compressive strength, as shown in Table 1, Examples 1 to 6 are 30.2 to 67.2 kg / cm 2 , whereas Comparative Examples 1 to 8 are 32.8 to 106.4 kg / cm 2.
Is. Regarding this compressive strength, it is understood that Comparative Examples 1 to 8 are generally smaller in compressive strength than Examples 1 to 6.
【００２３】また，圧縮歪みに関しては，表１，図２よ
り知られるごとく，実施例１〜６は，２１．２〜４１．
９×１０-2ｍｍであるのに対し，比較例１〜８は３．５
〜２４．６×１０-2ｍｍである。この圧縮歪みの値より
みて，実施１〜６のセメント系組成物を用いた硬化物
は，比較例よりも弾力性に優れていることが分かる。こ
れは，図１に示すごとく，本例のセメント系組成物と保
水剤１１との混合物を用いた硬化物内には，上記連続状
気孔１１０を多数有しており，セメント成分と保水剤１
１との密着性に優れていると考えられる。Regarding the compressive strain, as is known from Table 1 and FIG. 2, Examples 1 to 6 have 21.2 to 41.
9 × 10 −2 mm, while Comparative Examples 1 to 8 have 3.5
It is ˜24.6 × 10 −2 mm. From the value of this compression strain, it can be seen that the cured products using the cementitious compositions of Examples 1 to 6 have better elasticity than the comparative examples. As shown in FIG. 1, the hardened material obtained by using the mixture of the cement-based composition of the present example and the water retention agent 11 has a large number of continuous pores 110, and the cement component and the water retention agent 1
It is considered that the adhesiveness with 1 is excellent.
【００２４】曲げ強度に関しては，表１に示すごとく，
実施例１〜６は７．２〜１４．１ｋｇ／ｃｍ2 であるの
に対し，比較例１〜８は４．３〜２４．５ｋｇ／ｃｍ2
である。なお，比較例の中には実施例よりも圧縮強度，
曲げ強度に関しても優れているものがある。これは，比
較例１，２にはゴム無発泡体を混合していないためであ
ると考えられ，この際の圧縮歪は，極く小さな値を示
す。以上のごとく，本例によれば，保水性，圧縮歪み，
弾力性に優れた，セメント系組成物と保水剤とからなる
硬化物を得ることができる。Regarding bending strength, as shown in Table 1,
Examples 1 to 6 are 7.2 to 14.1 kg / cm 2 , whereas Comparative Examples 1 to 8 are 4.3 to 24.5 kg / cm 2.
Is. It should be noted that some of the comparative examples have a compressive strength higher than that of the examples.
Some have excellent bending strength. This is considered to be because Comparative Examples 1 and 2 did not contain the non-foamed rubber, and the compression strain at this time showed an extremely small value. As described above, according to this example, water retention, compressive strain,
It is possible to obtain a cured product which is excellent in elasticity and is composed of a cement composition and a water retention agent.
【００２５】実施例７〜１２，比較例９〜１４ 本例は，保水剤としてゴム発泡体粉砕物を，またポリマ
ー成分としてＳＢＲラテックスを用いる。即ち，表２に
示すセメント系組成物と保水剤との混合物を用いた硬化
物につき，保水性，弾力性等を測定する。上記表２中の
保水率，圧縮強度，圧縮歪み，曲げ強度についての実験
結果につき説明する。表２及び図２より知られるごと
く，まず保水率に関し，実施例７〜１２は，８６．４〜
９２．９％である。これに対し，比較例９〜１４は，７
８．６〜７９．９％である。この保水率は，実施例７〜
１２が，比較例９〜１４よりもいずれも高い。Examples 7 to 12 and Comparative Examples 9 to 14 In this example, a pulverized product of a rubber foam is used as a water retention agent, and SBR latex is used as a polymer component. That is, the water retention, elasticity, etc. of the cured product using the mixture of the cement composition and the water retention agent shown in Table 2 are measured. The experimental results for water retention, compressive strength, compressive strain, and bending strength in Table 2 above will be described. As is known from Table 2 and FIG. 2, first, regarding the water retention rate, Examples 7 to 12 are 86.4 to
It is 92.9%. On the other hand, in Comparative Examples 9 to 14, 7
It is 8.6 to 79.9%. This water retention rate is from Example 7 to
12 is higher than Comparative Examples 9 to 14.
【００２６】[0026]
【表２】 [Table 2]
【００２７】次に，圧縮強度に関しては，表２より知ら
れるごとく，実施例７〜１２は，３６．８〜７９．９ｋ
ｇ／ｃｍ2 である。これに対し，比較例９〜１４は，３
６．２〜７９．８ｋｇ／ｃｍ2 である。それ故，圧縮強
度は，実施例７〜１２が比較例９〜１４よりも，一般に
優れていることがわかる。また，圧縮歪みに関しては，
表２，図２に示すごとく，実施例７〜１２は，２２．６
〜４３．６×１０-2である。これに対し，比較例９〜１
４は，１３．２〜２４．８×１０-2ｍｍである。それ
故，上記圧縮歪みよりみて，実施例７〜１２の方が比較
例９〜１４よりも，弾力性が優れていることがわかる。Regarding the compressive strength, as is known from Table 2, Examples 7 to 12 are 36.8 to 79.9k.
It is g / cm 2 . On the other hand, in Comparative Examples 9 to 14, 3
It is 6.2 to 79.8 kg / cm 2 . Therefore, it is understood that the compressive strength of Examples 7 to 12 is generally superior to that of Comparative Examples 9 to 14. Regarding compression distortion,
As shown in Table 2 and FIG. 2, Examples 7 to 12 are 22.6.
Is about 43.6 × 10 -2 . On the other hand, Comparative Examples 9 to 1
4 is 13.2 to 24.8 × 10 -2 mm. Therefore, it can be seen that the elasticity of Examples 7 to 12 is superior to that of Comparative Examples 9 to 14 as compared with the above compression strain.
【００２８】次に，曲げ強度に関しては，表２より知ら
れるごとく，実施例７〜１２は，１２．２〜２６．８ｋ
ｇ／ｃｍ2 である。これに対し，比較例９〜１４は，
４．６〜１５．２ｋｇ／ｃｍ2 である。それ故，曲げ強
度も，実施例７〜１２が比較例９〜１４よりも一般に優
れていることがわかる。以上のごとく，本例において
も，上記混合物を用いた硬化物は，実施例が比較例より
も，保水率及び圧縮歪みよりみた弾力性がいずれも優れ
ていることがわかる。Next, regarding the bending strength, as is known from Table 2, Examples 7 to 12 had 12.2 to 26.8 k.
It is g / cm 2 . On the other hand, Comparative Examples 9 to 14
It is 4.6-15.2 kg / cm < 2 >. Therefore, it is understood that the bending strength of Examples 7 to 12 is generally superior to that of Comparative Examples 9 to 14. As described above, also in the present example, it can be seen that the cured product using the above mixture is superior in comparative example to the water retention and the elasticity in terms of compressive strain.
【００２９】その理由は，表２に示すごとく，混合物中
の合成樹脂エマルジョンが上記連続状気孔３０と結合し
て相乗的に保水性，弾力性の向上に作用しているものと
考えられる。それ故，本例によれば，硬化物が保水率，
圧縮歪み，弾力性に優れた，セメント系組成物の保水剤
を得ることができる。It is considered that the reason is that, as shown in Table 2, the synthetic resin emulsion in the mixture is combined with the continuous pores 30 to synergistically improve water retention and elasticity. Therefore, according to this example, the cured product has a water retention rate,
It is possible to obtain a water-retaining agent of a cement composition which is excellent in compressive strain and elasticity.
【００３０】実施例１３ 本例は，図３に示すごとく，上記実施例１に示したセメ
ント系組成物と保水剤との混合物を用いて，舗道用敷物
に用いる硬化物２を作成するものである。上記硬化物２
は，図３に示すごとく，コンクリートよりなる基部２１
と，その表面に型押し成形により一体形成した着色装飾
部２２とよりなる。また，上記硬化物２を作成するに当
っては，図３に示す硬化物２の外形と略同形の型内に，
まずポルトランドセメントと砂利と顔料と水とからなる
コンクリート混合物を投入し成形した。Example 13 In this example, as shown in FIG. 3, a mixture 2 of the cementitious composition and the water retention agent shown in Example 1 was used to prepare a cured product 2 used for a pavement rug. is there. The cured product 2
Is a base 21 made of concrete, as shown in FIG.
And a colored decorative portion 22 integrally formed on the surface by stamping. Further, in producing the above-mentioned cured product 2, in a mold having a shape substantially the same as the outer shape of the cured product 2 shown in FIG.
First, a concrete mixture consisting of Portland cement, gravel, pigment and water was added and molded.
【００３１】上記成形時間は，従来のセメント系の混合
物３（図４）と同様である。また，着色装飾部２２は，
ポルトランドセメントとゴム発泡体粉砕物（１ｍｍ平均
径）からなる保水剤と砂と顔料とエマルジョン（ＳＢＲ
ラテックス）と水とからなるカラーモルタルにより構成
する。一方，上記硬化物２につき，上記実施例１〜６と
同様に，保水率及び圧縮歪みからみた弾力性を測定した
ところ，上記表１，図２と同様の結果が得られた。それ
故，本例によれば，保水性，弾力性，強度に優れた，ソ
フトな歩行感を有する舗道用敷物として最適の硬化物２
を得ることができる。The molding time is the same as that of the conventional cement-based mixture 3 (FIG. 4). In addition, the colored decoration portion 22 is
Water retention agent consisting of Portland cement and crushed rubber foam (1 mm average diameter), sand, pigment and emulsion (SBR
It is composed of a color mortar consisting of latex) and water. On the other hand, when the cured product 2 was measured for elasticity in terms of water retention and compression strain in the same manner as in Examples 1 to 6, the same results as in Table 1 and FIG. 2 were obtained. Therefore, according to this example, a cured product 2 which is excellent in water retention, elasticity and strength, and which has a soft walking feeling and is optimal as a pavement rug 2
Can be obtained.
【００３２】比較例 本例は，図４に示すごとく，インターロッキングブロッ
ク状の硬化物３を作成するものである。上記硬化物３
は，図４に示すごとく，コンクリートよりなる基部３１
と，その表面に着色装飾部３２を有する。この着色装飾
部３２は，ポルトランドセメントと砂と顔料と水とより
なるカラーモルタルにより構成してある。Comparative Example In this example, as shown in FIG. 4, an interlocking block-shaped cured product 3 is prepared. The above cured product 3
Is a base 31 made of concrete, as shown in FIG.
And a colored decorative portion 32 on its surface. The colored decorative portion 32 is composed of a color mortar composed of Portland cement, sand, pigment and water.
【００３３】また，上記基部３１は，ポルトランドセメ
ントと砂利と砂と水とよりなるコンクリートにより構成
してある。また，上記着色装飾部３２は，上記比較例１
〜８にかかる混合物を用いて作成したものである。その
ため，該硬化物３につき，上記比較例１〜８同様に，保
水率及び圧縮歪みを測定したところ，上記表２，図２と
同様の結果が得られた。それ故，比較例の硬化物３は，
上記本発明の硬化物２に比して，保水率及び圧縮歪みが
劣ることが明らかである。The base 31 is made of concrete composed of Portland cement, gravel, sand and water. In addition, the colored decorative portion 32 is the same as the comparative example 1
It was created using the mixture according to ~ 8. Therefore, when the water retention rate and the compression strain of the cured product 3 were measured in the same manner as in Comparative Examples 1 to 8, the same results as those in Table 2 and FIG. 2 were obtained. Therefore, the cured product 3 of the comparative example is
It is apparent that the water retention rate and the compression strain are inferior to the cured product 2 of the present invention.
【図１】実施例１〜６における，セメント系組成物と保
水剤とを混合した混合物の模式説明図。FIG. 1 is a schematic explanatory view of a mixture obtained by mixing a cementitious composition and a water retention agent in Examples 1 to 6.
【図２】実施例１〜１２及び比較例１〜１４における，
保水率及び圧縮歪みよりみた弾力性を示すグラフ。FIG. 2 is a graph of Examples 1-12 and Comparative Examples 1-14.
The graph which shows the elasticity seen from a water retention rate and a compression strain.
【図３】実施例１３における，セメント系の硬化物の斜
視図。FIG. 3 is a perspective view of a cement-based cured product in Example 13.
【図４】実施例１４における，セメント系の硬化物の斜
視図。FIG. 4 is a perspective view of a cement-based cured product in Example 14.
【図５】従来のセメント系組成物と保水剤とを混合した
混合物の模式説明図。FIG. 5 is a schematic explanatory view of a mixture of a conventional cementitious composition and a water retention agent.
１．．．セメント系の混合物， １１．．．保水剤， １１０．．．連続状気孔， １１１．．．表面凹部， １２．．．内部気孔， ２，３．．．セメント系の硬化物， ２０，３０．．．連続状気孔， ２１，３１．．．本体， 1. ． ． Cementitious mixture, 11. ． ． Water retention agent, 110. ． ． Continuous pores, 111. ． ． Surface recess, 12. ． ． Internal pores, 2,3. ． ． Cement-based cured product, 20, 30. ． ． Continuous pores, 21, 31. ． ． Body,
───────────────────────────────────────────────────── フロントページの続き (72)発明者 堀 純尚 大阪市東住吉区田辺四丁目九番四号 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junhori Hori 4-9-4 Tanabe, Higashisumiyoshi-ku, Osaka
Claims (3)
剤であって，該保水剤はゴム発泡体，プラスチック発泡
体等の発泡弾性材を粉砕した発泡粉砕物よりなることを
特徴とするセメント系組成物混合用の保水剤。1. A water retention agent for mixing with a cementitious composition, wherein the water retention agent is a foamed crushed product obtained by crushing a foamed elastic material such as a rubber foam or a plastic foam. A water retention agent for mixing a system composition.
コンクリート又はモルタルであることを特徴とするセメ
ント系組成物混合用の保水剤。2. The water retention agent for mixing a cement composition according to claim 1, wherein the cement composition is concrete or mortar.
は，コンクリート又はモルタルに，天然ゴムラテック
ス，合成ゴムラテックス，合成樹脂エマルジョン，パウ
ダーエマルジョン剤等のポリマー成分を添加してなるポ
リマーコンクリート又はポリマーセメントモルタルであ
ることを特徴とするセメント系組成物混合用の保水剤。3. The cement concrete composition according to claim 1, wherein the concrete or mortar is added with a polymer component such as natural rubber latex, synthetic rubber latex, synthetic resin emulsion or powder emulsion agent. A water retention agent for mixing a cement composition, which is a mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21456792A JP3183960B2 (en) | 1992-07-20 | 1992-07-20 | Water retention agent for mixing cementitious compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21456792A JP3183960B2 (en) | 1992-07-20 | 1992-07-20 | Water retention agent for mixing cementitious compositions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0632638A true JPH0632638A (en) | 1994-02-08 |
| JP3183960B2 JP3183960B2 (en) | 2001-07-09 |
Family
ID=16657862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21456792A Expired - Fee Related JP3183960B2 (en) | 1992-07-20 | 1992-07-20 | Water retention agent for mixing cementitious compositions |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3183960B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030603A (en) * | 2014-06-19 | 2014-09-10 | 梁晓 | Crack decorating sealant for ceramic tiles |
| CN104496320A (en) * | 2014-12-18 | 2015-04-08 | 南京工业大学 | Cement-based self-leveling mortar and preparation method thereof |
| CN104775576A (en) * | 2015-04-17 | 2015-07-15 | 湖南博通新型建材有限公司 | Method for decorating walls of buildings with wall paint and forming masking grid lines |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020315A (en) * | 2018-08-01 | 2018-12-18 | 山东源根化学技术研发有限公司 | A kind of radiation protection decoration cement and its preparation process |
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1992
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030603A (en) * | 2014-06-19 | 2014-09-10 | 梁晓 | Crack decorating sealant for ceramic tiles |
| CN104496320A (en) * | 2014-12-18 | 2015-04-08 | 南京工业大学 | Cement-based self-leveling mortar and preparation method thereof |
| CN104775576A (en) * | 2015-04-17 | 2015-07-15 | 湖南博通新型建材有限公司 | Method for decorating walls of buildings with wall paint and forming masking grid lines |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3183960B2 (en) | 2001-07-09 |
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