JPH0222029B2 - - Google Patents
Info
- Publication number
- JPH0222029B2 JPH0222029B2 JP57009055A JP905582A JPH0222029B2 JP H0222029 B2 JPH0222029 B2 JP H0222029B2 JP 57009055 A JP57009055 A JP 57009055A JP 905582 A JP905582 A JP 905582A JP H0222029 B2 JPH0222029 B2 JP H0222029B2
- Authority
- JP
- Japan
- Prior art keywords
- molded body
- weight
- silicone resin
- concrete molded
- mortar layer
- 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.)
- Expired - Lifetime
Links
- 229920002050 silicone resin Polymers 0.000 claims description 18
- 239000004570 mortar (masonry) Substances 0.000 claims description 15
- 239000011381 foam concrete Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000004567 concrete Substances 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000006260 foam Substances 0.000 description 8
- 229920002545 silicone oil Polymers 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000002940 repellent Effects 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- -1 dimethylsiloxane Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- CCDWGDHTPAJHOA-UHFFFAOYSA-N benzylsilicon Chemical compound [Si]CC1=CC=CC=C1 CCDWGDHTPAJHOA-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
【発明の詳細な説明】
本発明は、軽量気泡コンクリート成型体及びそ
の製造方法、さらに詳しくは、高温高圧蒸気養生
（オートクレーブ養生）して、強度発現を損なわ
せることなく、耐水性を向上させる軽量気泡コン
クリート成型体（以下ALCという）及び軽量気
泡コンクリート成型体の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lightweight aerated concrete molded body and a method for producing the same, and more specifically, the present invention relates to a lightweight cellular concrete molded body and a method for manufacturing the same, and more particularly, the present invention relates to a lightweight cellular concrete molded body that is cured with high temperature and high pressure steam (autoclave curing) to improve water resistance without impairing strength development. This invention relates to a method for producing aerated concrete molded bodies (hereinafter referred to as ALC) and lightweight aerated concrete molded bodies.
従来、ALCは、セメント又は石炭と硅石粉末
等の主原料に所望に応じて軽量骨材を配合し、金
属粉末や起泡剤等により気泡を混入したコンクリ
ートを調合し、成型した後オートクレーブ養生し
て製造されている。ALCは、軽くて断熱性があ
り、施工が容易であるという利点がある反面、吸
水性が高く凍結融解抵抗性に劣つたり、多くの気
孔を有するのでもろかつたり、表面にできるペー
スト層などは強度は弱くて欠け易すく耐衝撃性が
小さいという欠点があつた。 Conventionally, ALC mixes main raw materials such as cement or coal and silica powder with lightweight aggregate as desired, mixes air bubbles with metal powder, foaming agent, etc. to form concrete, molds it, and then cures it in an autoclave. Manufactured by Although ALC has the advantages of being lightweight, insulating, and easy to install, it has high water absorption and poor freeze-thaw resistance, has many pores and is brittle, and has a paste layer that forms on the surface. The disadvantages were that it had low strength, was easily chipped, and had low impact resistance.
これを改善するため、シリコーンを主成分とす
る撥水剤を、原料のコンクリート調合物に添加し
たり、オートクレーブ養生後の成型体に塗布した
りする方法が提案されている。しかしながら、前
者の方法では、気孔やペースト層の強化を十分に
行なうことができず、しかも、防水効果を得るに
は多量混入が必要となるので、気泡が不安定とな
り強度発現が悪くなる。一方、後者によれば、前
者のような欠点は軽減できるが、撥水剤とALC
本体とを一体化するのに難点があり、少しの衝撃
でも剥離したり、屋外では劣化したりして防水性
能が損われてくるという問題がある。 In order to improve this problem, methods have been proposed in which a water repellent containing silicone as a main component is added to the raw concrete mixture or applied to the molded body after being cured in an autoclave. However, in the former method, the pores and the paste layer cannot be sufficiently strengthened, and moreover, a large amount of the paste is required to be mixed in to obtain a waterproof effect, which makes the bubbles unstable and deteriorates the strength. On the other hand, according to the latter, the disadvantages of the former can be alleviated, but water repellents and ALC
There are difficulties in integrating it with the main body, and the problem is that it can peel off even with the slightest impact, and it can deteriorate when exposed outdoors, resulting in a loss of waterproof performance.
本発明者は、撥水剤を使用するこれらの問題点
を解決するために鋭意研究した結果、オートクレ
ーブ養生される気泡含有コンクリート成型体表面
に予めシリコーン樹脂を含むモルタル層を形成さ
せれば、表面強度が大で、かつ耐水性にすぐれた
ALCを製造できることを見い出し、本発明を完
成したものである。 As a result of intensive research to solve these problems associated with the use of water repellents, the present inventor found that if a mortar layer containing a silicone resin is formed in advance on the surface of a bubble-containing concrete molded body to be cured in an autoclave, the surface High strength and excellent water resistance
They discovered that ALC can be produced and completed the present invention.
即ち、本発明は、気泡含有コンクリート成型体
の表面に、シリコーン樹脂を含むモルタル層を形
成してなる軽量気泡コンクリート成型体であり、
さらにそれを高温高圧蒸気養生する軽量気泡コン
クリート成型体の製造方法である。 That is, the present invention is a lightweight cellular concrete molded body formed by forming a mortar layer containing a silicone resin on the surface of a cellular concrete molded body,
Furthermore, this is a method for producing lightweight cellular concrete moldings, which is cured using high-temperature, high-pressure steam.
以下、詳しく本発明について説明する。 The present invention will be explained in detail below.
本発明における気泡含有コンクリート成型体と
は、気泡含有コンクリート成型体調合物を型枠に
流し込まれた状態のように未だ硬化が始まつてい
ない成型体であるか、又は凝結硬化を始めた成型
体であつて、必要に応じてピアノ線等で所望の形
状に切断加工したものをいう。このような気泡含
有コンクリート調合物は、従来と同様にして、セ
メント及び又は石灰からなる石灰質材料とオート
クレーブ養生によつて該石灰分と反応するような
ケイ酸質粉末とを含有する水性スラリーに、発泡
法、ミキスフオーム法、プレフオーム法等の手段
により気泡を混入することによつて製造すること
ができる。この気泡含有コンクリート調合物は、
気泡の一部又は全部を軽量骨材としたものであつ
てもよい。 In the present invention, the foam-containing concrete molded body is a molded body that has not yet begun to harden, such as when a foam-containing concrete molded mixture is poured into a formwork, or a molded body that has begun to set and harden. , which is cut into a desired shape using piano wire or the like, if necessary. Such aerated concrete formulations are conventionally prepared by adding to an aqueous slurry containing a calcareous material consisting of cement and/or lime and a siliceous powder which reacts with the lime content by autoclave curing. It can be manufactured by mixing air bubbles by means such as a foaming method, mix foam method, and preform method. This aerated concrete formulation is
Some or all of the cells may be made of lightweight aggregate.
この調合物を所望形状に賦形し、気泡含有コン
クリート成型体とした後、その表面にシリコーン
樹脂を含むモルタル層を形成させる。 This mixture is shaped into a desired shape to form a foam-containing concrete molded body, and then a mortar layer containing a silicone resin is formed on the surface of the molded concrete body.
シリコーン樹脂を含むモルタル層の形成法とし
ては、未だ硬化が始まつていない気泡含有コンク
リート成型体にあつては、シリコーン樹脂を塗布
し消泡させる方法が採用でき、また、凝結硬化を
始めた気泡含有コンクリート成型体にあつては、
一般的に行なわれているように、シリコーン樹脂
の添加されたセメントモルタルをコテ塗りやスプ
レー塗装する方法、シリコーン樹脂を予め発泡成
型体表面に塗布した後その面をローラー等で押し
つぶしてモルタル層にする方法等が採用され、そ
れらの手段には特に制限を受けるものではない。
後者のように凝結硬化を始めた気泡含有コンクリ
ート成型体にモルタル層を形成させる場合には、
気泡含有コンクリート成型体が保型性を有するも
のになつた時点、具体的には、圧縮強度で１〜３
Kgｆ／cm2程度を発現してから、シリコーン樹脂を
含むモルタル層を形成させるのが望ましい。ま
た、シリコーン樹脂の添加されたセメントモルタ
ルを使用する場合、その調合例を示せば、セメン
ト100重量部に対して硅石粉末30〜300重量部、水
50〜200重量部からなるセメントモルタル100重量
部に対しシリコーン樹脂１〜20重量部であり、ま
た、シリコーン樹脂を塗布する方法においては、
概略、そのような割合からなるモルタル層が形成
されるように、シリコーン樹脂を塗布すればよ
い。 As a method for forming a mortar layer containing silicone resin, in the case of a foam-containing concrete molded body that has not yet begun to harden, a method can be adopted in which a silicone resin is applied and defoamed; For concrete molded bodies containing
Commonly used methods include applying cement mortar containing silicone resin with a trowel or spray painting, or applying silicone resin to the surface of the foam molding in advance and then crushing the surface with a roller etc. to form a mortar layer. There are no particular restrictions on these methods.
When forming a mortar layer on a bubble-containing concrete molding that has begun to set and harden, as in the latter case,
When the foam-containing concrete molded body has shape retention properties, specifically, the compressive strength is 1 to 3.
It is preferable to form a mortar layer containing a silicone resin after developing about Kgf/cm 2 . In addition, when using cement mortar containing silicone resin, an example of its formulation is 100 parts by weight of cement, 30 to 300 parts by weight of silica powder, and water.
1 to 20 parts by weight of silicone resin per 100 parts by weight of cement mortar consisting of 50 to 200 parts by weight, and in the method of applying silicone resin,
Generally speaking, the silicone resin may be applied so that a mortar layer having such proportions is formed.
シリコーン樹脂を含むモルタル層の形成厚とし
ては、気泡含有コンクリート成型体表面の粗雑な
面を充てん平滑化し、シリコーン樹脂が全面にゆ
きわたるような厚みであればよく、具体的には、
0.3〜10mm程度である。 The thickness of the mortar layer containing silicone resin may be such that it can fill and smooth the rough surface of the foam-containing concrete molded body and spread the silicone resin over the entire surface. Specifically,
It is about 0.3 to 10 mm.
シリコーン樹脂としては、一般的なシリコーン
油で十分であり、具体例をあげれば、ジメチルシ
ロキサンオイル、メチルフエニルシロキサンオイ
ル、メチルハイドロジエンシロキサンオイル、メ
チルシリコーンワニス、フエニルメチルシリコー
ンワニスまたはこれらの変成体およびそのエマル
ジヨン等である。シリコーン樹脂の変成体として
は、エポキシ、アクリル、メラミン、フエノール
等のモノマーやポリマーとの共重合物やブレンド
物が使用できる。 As the silicone resin, general silicone oils are sufficient; specific examples include dimethylsiloxane oil, methylphenylsiloxane oil, methylhydrogensiloxane oil, methylsilicone varnish, phenylmethylsilicone varnish, or modified versions thereof. body and its emulsion, etc. As modified silicone resins, copolymers and blends with monomers and polymers such as epoxy, acrylic, melamine, and phenol can be used.
次に、オートクレーブ養生は一般的な条件を用
いることができ、通常、圧力10Kg／cm2で温度180
℃の飽和蒸気が用いられるが、特に制限されるも
のではない。 Next, autoclave curing can use common conditions, typically pressure 10Kg/ cm2 and temperature 180C.
C. saturated steam is used, but is not particularly limited.
本発明によつて製造されたALCは、水の浸透
が非常に少なくなり、耐水性と凍結融解抵抗性に
優れ、かつ表面強度が著しく向上し、欠け難くな
るという効果がある。 The ALC produced according to the present invention has the following effects: very little water permeation, excellent water resistance and freeze-thaw resistance, significantly improved surface strength, and resistance to chipping.
以下、実施例をあげてさらに詳しく本発明を説
明する。 Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例 １
45重量部の普通ポルトランドセメントと55重量
部の硅石粉に60重量部の水を混入攪拌してスラリ
ーを製造した。該スラリーに起泡剤として商品名
「フオーミツクスＣ」（ハマノ工業(株)製）により
気泡を混入し容重0.7ｇ／c.c.とし、これを10×10
×40cm型枠に流し込み、１日後に脱型し気泡含有
コンクリート成型体を得た。該成型体の表面に、
予め製造したおいた普通ポルトランドセメント
100重量部、硅石粉300重量部、シリコーンオイル
商品名「トーレシリコーンSH200」50重量部及び
水100重量部からなるモルタルを厚さ１mm程度に
コテ塗りして平滑な面を形成させた後オートクレ
ーブに移し、昇温40℃／hr、最高圧10Kg／cm2、温
度180℃で８時間水蒸気養生を行なつた。Example 1 45 parts by weight of ordinary Portland cement and 55 parts by weight of silica powder were mixed with 60 parts by weight of water and stirred to produce a slurry. Air bubbles were mixed into the slurry using a foaming agent under the trade name "Formics C" (manufactured by Hamano Kogyo Co., Ltd.) to give a volume of 0.7 g/cc.
The mixture was poured into a 40cm x 40cm formwork and removed from the mold after one day to obtain a foamed concrete molded body. On the surface of the molded body,
Pre-made ordinary Portland cement
A mortar consisting of 100 parts by weight, 300 parts by weight of silica powder, 50 parts by weight of silicone oil (trade name: Torre Silicone SH200), and 100 parts by weight of water was applied with a trowel to a thickness of about 1 mm to form a smooth surface, and then placed in an autoclave. The sample was transferred and steam-cured for 8 hours at a temperature increase of 40°C/hr, a maximum pressure of 10 kg/cm 2 , and a temperature of 180°C.
得られたALCの防水性能について、10×10×
40cmの供試体を水面下２cmとなるように水中に浸
漬して、24時間放置した後の水分吸収による重量
増加を測定したところ、0.9重量％であつた。 Regarding the waterproof performance of the obtained ALC, 10×10×
A 40 cm specimen was immersed in water to a depth of 2 cm below the water surface and the weight increase due to water absorption after being left for 24 hours was measured and found to be 0.9% by weight.
比較のためシリコーンオイルを含むモルタル層
を形成させないでALCを製造し、その表面上に
200ｇ／m2のシリコーンオイルを塗布し、同様の
試験を行なつたところ、重量増加は10重量％であ
つた。なお、シリコーンオイルで処理しないもの
の重量増加は20重量％である。また、シリコーン
オイルを含むモルタル層を形成したあと、オート
クレーブ養生を行わず、20℃、80％RHで養生を
行つたところ、水分吸収による重量増加は、７重
量％であつた。 For comparison, ALC was manufactured without forming a mortar layer containing silicone oil, and the
When 200 g/m 2 of silicone oil was applied and a similar test was conducted, the weight increase was 10% by weight. In addition, the weight increase of the product not treated with silicone oil is 20% by weight. Furthermore, after forming a mortar layer containing silicone oil, curing was performed at 20° C. and 80% RH without autoclave curing, and the weight increase due to water absorption was 7% by weight.
次に、凍結融解抵抗性についてASTM−Ｃ−
666に準じて水中凍結−水中融解（−18℃〜＋５
℃のサイクルを１日に２サイクル行なう）を行な
つたところ、比較品は50サイクルでALC本体か
らシリコーンオイル層がハガレて欠け落ちしひび
われが発生していたが、本発明によるALCの外
観はほとんど変化してなく、非常に硬い表面であ
つた。 Next, regarding freeze-thaw resistance, ASTM-C-
Underwater freezing-underwater thawing (-18°C to +5°C) according to 666
℃ cycle twice a day), the silicone oil layer of the comparative product peeled off from the ALC body after 50 cycles, and cracks appeared, but the appearance of the ALC according to the present invention was It was a very hard surface with little change.
実施例 ２
実施例１と同様に製造した気泡含有コンクリー
ト成型体の表面に、シリコーンオイル商品名「ト
ーレシリコーンSH200」を350ｇ／m2塗布した後、
この表面をローラーで５mm押しつぶしモルタル層
を形成させた後、同様なオートクレーブ養生を行
なつてALCを製造した。その吸水試験を行なつ
たところ1.1％の重量増加であり、また、50サイ
クルの凍結融解試験では全く異常は認められなか
つた。Example 2 After applying 350 g/m 2 of silicone oil (trade name: Torre Silicone SH200) to the surface of a foam-containing concrete molded body produced in the same manner as in Example 1,
After crushing this surface by 5 mm with a roller to form a mortar layer, the same autoclave curing was performed to produce ALC. A water absorption test showed a weight increase of 1.1%, and no abnormality was observed in a 50-cycle freeze-thaw test.
Claims (1)
コーン樹脂を含むモルタル層を形成してなる軽量
気泡コンクリート成型体。 ２ 気泡含有コンクリート成型体の表面に、シリ
コーン樹脂を含むモルタル層を形成させた後、高
温高圧蒸気養生することを特徴とする軽量気泡コ
ンクリート成型体の製造方法。[Scope of Claims] 1. A lightweight foamed concrete molded body formed by forming a mortar layer containing a silicone resin on the surface of a foamed concrete molded body. 2. A method for producing a lightweight foamed concrete molded body, which comprises forming a mortar layer containing a silicone resin on the surface of the foamed concrete molded body, and then curing it with high-temperature, high-pressure steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP905582A JPS58130181A (en) | 1982-01-23 | 1982-01-23 | Manufacture of lightweight foamed concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP905582A JPS58130181A (en) | 1982-01-23 | 1982-01-23 | Manufacture of lightweight foamed concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58130181A JPS58130181A (en) | 1983-08-03 |
| JPH0222029B2 true JPH0222029B2 (en) | 1990-05-17 |
Family
ID=11709940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP905582A Granted JPS58130181A (en) | 1982-01-23 | 1982-01-23 | Manufacture of lightweight foamed concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58130181A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03158204A (en) * | 1989-11-15 | 1991-07-08 | Misawa Homes Co Ltd | Method for producing light-weight foamed concrete panel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS557578A (en) * | 1978-07-03 | 1980-01-19 | Toshiba Silicone | Method of treating inorganic material |
-
1982
- 1982-01-23 JP JP905582A patent/JPS58130181A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS557578A (en) * | 1978-07-03 | 1980-01-19 | Toshiba Silicone | Method of treating inorganic material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58130181A (en) | 1983-08-03 |
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