JPH0345573A - Lightweight cellular concrete composition and production of the same concrete structure using the same - Google Patents
Lightweight cellular concrete composition and production of the same concrete structure using the sameInfo
- Publication number
- JPH0345573A JPH0345573A JP18134089A JP18134089A JPH0345573A JP H0345573 A JPH0345573 A JP H0345573A JP 18134089 A JP18134089 A JP 18134089A JP 18134089 A JP18134089 A JP 18134089A JP H0345573 A JPH0345573 A JP H0345573A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- aqueous solution
- slaked lime
- amorphous silica
- lime
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 20
- 239000011381 foam concrete Substances 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000004567 concrete Substances 0.000 title description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000002994 raw material Substances 0.000 claims abstract description 30
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 27
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 27
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 27
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 27
- 239000007864 aqueous solution Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 11
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 8
- 239000004571 lime Substances 0.000 claims abstract description 8
- 239000004568 cement Substances 0.000 claims abstract description 5
- 239000004576 sand Substances 0.000 claims abstract description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 20
- 239000000292 calcium oxide Substances 0.000 claims description 9
- 235000012255 calcium oxide Nutrition 0.000 claims description 9
- 230000029087 digestion Effects 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000011044 quartzite Substances 0.000 abstract 1
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 description 16
- 230000000694 effects Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- -1 silicate ions Chemical class 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910002026 crystalline silica Inorganic materials 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- 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、水蒸気養生軽量気泡コンクリート（以下、Ａ
ＬＣと称す）の組成物並びに同組成物を用いた同コンク
リート構造体の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is directed to steam-cured lightweight aerated concrete (hereinafter referred to as A
LC) and a method for producing the same concrete structure using the same composition.
（従来の技術）
従来より、ＡＬＣ構造体の製造に際しては、セメントと
石灰とよりなる石灰質原料もしくは石灰のみよりなる石
灰質原料と、珪石もしくは珪砂よりなる珪酸質原料と、
水とを主要原料とする組成物に、添加剤が加えられてス
ラリー状とされた後。(Prior Art) Conventionally, when manufacturing an ALC structure, a calcareous raw material consisting of cement and lime or a calcareous raw material consisting only of lime, a siliceous raw material consisting of silica stone or silica sand,
After additives are added to a composition whose main ingredients are water and it is made into a slurry.
更に、アルミニュウム粉が加えられて発泡、半可塑化さ
れ、次いで、オートクレーブに移され、高温高圧下で水
蒸気養生処理が施されて製品化されいる。Furthermore, aluminum powder is added to foam and semi-plasticize the product, and then it is transferred to an autoclave and subjected to steam curing treatment under high temperature and high pressure to become a product.
（発明が解決しようとする課題）
然し乍ら、基本的に建築用材料として用いられる事の多
いＡＬＣには、所用特性が保証された上で、尚且つ、極
力低価格である事が要求されている。(Problem to be solved by the invention) However, ALC, which is basically used in many cases as a building material, is required to have the required properties guaranteed and to be as low in price as possible. .
これらの課題を解決する事を目的として、ＡＬＣ製造工
程のオートクレーブ養生処理温度を上昇させる事が提案
されているが、この方法ではオートクレーブ養生処理温
度を上昇させる為に、設備の改善に多額の出費が強要さ
れると共に、加熱を目的として消費される燃料費も嵩む
事になる為。In order to solve these problems, it has been proposed to increase the autoclave curing temperature in the ALC manufacturing process, but this method requires a large amount of expense to improve equipment in order to raise the autoclave curing temperature. In addition to this, the cost of fuel consumed for heating purposes also increases.
斯業界からは、より効率的なＡＬＣ製造手段の出現が望
まれていた。The industry has been hoping for a more efficient means of manufacturing ALC.
本発明は、上記課題を解決する為、既存の設備を利用し
乍ら、オートクレーブ養生処理時間を短縮出来、ＡＬＣ
構造体の所用特性（ＪＩＳ Ａ、５４１６に規定された
圧縮強度、絶乾かさ比重、曲げ強さ、長さ変化率、断熱
性）も十分に満足し得る組成物並びにこれを用いたＡＬ
Ｃ構造体の製造方法を提供することを目的とする。In order to solve the above problems, the present invention can shorten the autoclave curing processing time while using existing equipment, and the ALC
A composition that fully satisfies the required characteristics of a structure (compressive strength, absolute dry bulk specific gravity, bending strength, rate of change in length, and heat insulation properties specified in JIS A, 5416) and an AL using the same.
An object of the present invention is to provide a method for manufacturing a C structure.
（課題を解決するための手段）
本発明者等は、上記の課題を解決する目的で種々研究の
結果、非晶質シリカを２００ｐｐｍ以上３゜０００ ｐ
ｐｍ以下の割合で溶解される様に予め調整されている水
溶液を用意し、この水溶液を十分に攪拌して後に生石灰
を投入し、所定時間保持する事によって消化処理して得
られた消石灰を、ＡＬＣの石灰質原料として用いる事に
よって、上記の課題が解決される事を見出したものであ
る。即ち、本発明はセメントと石灰とよりなる石灰質原
料もしくは石灰のみよりなる石灰質原料と、珪石もしく
は珪砂よりなる珪酸質原料と、水とを主要原料とする軽
量気泡コンクリート組成物に於いて、上記石灰質原料の
一部又は全部が非晶質シリカ包含の消石灰であり、該消
石灰が水溶液を用いて生石灰を消化して得られた消石灰
であり、該水溶液が非晶質シリカを２００ｐｐｍ以上、
３．ＯＯＯｐｐｍ以下の割合で包含する様に調合された
水溶液である事を特徴とする軽量気泡コンクリート組成
物並びにこれを用いてコンクリート構造体を得るために
、水中に非晶質シリカ粉末を添加して非晶質シリカを２
００ｐｐｍ以上３，０ＯＯｐｐｉ以下含む水溶液を得る
こと、得られた水溶液に石灰質原料を加えて消化処理を
経て消石灰を得ること、得られた消石灰に珪酸質原料を
加えて原料組成物を調製すること、この組成物にＡＱ粉
末及び水を加えてスラリーとし、このスラリーを所望の
型に注入成型して半可塑化した后水蒸気養生処理をする
こと、より成る軽量気泡コンクリートの構造体の製造方
法に関する。(Means for Solving the Problems) In order to solve the above problems, the present inventors have conducted various studies and found that amorphous silica of 200 ppm or more is 3゜000 ppm or more.
Prepare an aqueous solution that has been adjusted in advance so that it dissolves at a rate of less than pm, stir this aqueous solution thoroughly, then add quicklime and hold it for a predetermined period of time to digest the resulting slaked lime. It has been discovered that the above problems can be solved by using it as a calcareous raw material for ALC. That is, the present invention provides a lightweight cellular concrete composition whose main raw materials are a calcareous raw material consisting of cement and lime or a calcareous raw material consisting only of lime, a siliceous raw material consisting of silica stone or silica sand, and water. Part or all of the raw material is slaked lime containing amorphous silica, the slaked lime is slaked lime obtained by digesting quicklime using an aqueous solution, and the aqueous solution contains 200 ppm or more of amorphous silica,
3. In order to obtain a lightweight aerated concrete composition, which is characterized by being an aqueous solution formulated to contain silica at a ratio of OOppm or less, and a concrete structure using the same, amorphous silica powder is added to water. 2 crystalline silica
Obtaining an aqueous solution containing 00 ppm or more and 3,0 O Oppi or less; Adding a calcareous raw material to the obtained aqueous solution and obtaining slaked lime through a digestion treatment; Adding a silicate raw material to the obtained slaked lime to prepare a raw material composition; This invention relates to a method for producing a lightweight cellular concrete structure, which comprises adding AQ powder and water to this composition to form a slurry, injection-molding the slurry into a desired mold, semi-plasticizing it, and subjecting it to steam curing treatment.
本発明に於ける非晶質シリカ粉末とは、シリカゲル、シ
リカゾル、ホワイトカーボン（微粉末シリカ）などがあ
り、市販品としては例えば［ｉ’ Ｎ１ｐｓｉｌにツブ
ジル）ｒ、ｐ（日本シリカニ業ＫｌｕＭ） ｊが挙げら
れる。The amorphous silica powder in the present invention includes silica gel, silica sol, white carbon (fine powder silica), etc. Commercially available products include, for example, [i' N1 psil to Tubujil] r, p (Nihon Silikani KluM) j can be mentioned.
（作用）
本発明にあって採用されている、非晶質シリカを上記範
囲内に含んだ水溶液を用いて生石灰を消化処理して得ら
れた消石灰が、ＡＬＣのオートクレーブ養生処理時間の
短縮化に対して、有効に作用する理由は明らかでないが
、消石灰の表面に微細なＣ−８−Ｈゲルが形成され、こ
れがトバモライト（ｔｏｂｅｒｍｏｒｉｔｅ、 Ｃａ５
ｉＯ，・Ｈ，Ｏ）又はＣ−５−Ｈの結晶核として作動す
るかあるいは、消石灰の結晶が層状構造をとる為にシリ
ケートイオンが固溶し、これによって、トバモライトの
結晶成長を促進し、結果的にＡＬＣの製造時間を大幅に
短縮する事に成功したものであると推定される。(Function) The slaked lime obtained by digesting quicklime using an aqueous solution containing amorphous silica within the above range, which is employed in the present invention, can shorten the autoclave curing time of ALC. On the other hand, although the reason why it works effectively is not clear, a fine C-8-H gel is formed on the surface of slaked lime, and this is formed by tobermorite (Ca5
The silicate ions act as crystal nuclei of iO, .H, O) or C-5-H, or because the crystals of slaked lime have a layered structure, silicate ions form a solid solution, thereby promoting the crystal growth of tobermorite. As a result, it is presumed that the manufacturing time of ALC was successfully shortened significantly.
本発明にあって、ＡＬＣ製造用の石灰質原料として非晶
質シリカ含有の消石灰を使用し、上記非晶質シリカ含有
の消石灰を調整する際に使用される水溶液中の非晶質シ
リカを２００ｐｐｍ以上３゜０００ｐｐｍと規定したの
は、上記非晶質シリカ含有の消石灰を調整する為に利用
される水溶液中の非晶質シリカが２００ｐｐｍ未満では
オートクレーブ養生処理時間を短縮する効果が十分に期
待できない為であり、又上記非晶質シリカ含有の消石灰
を調整する為に利用される水溶液中の非晶質シリカが３
．ＯＯＯｐｐｍを超えたとしてみも、その特性を改善す
る効果の向上度が停滞してくる為であるばかりでなく、
上記非晶質シリカ含有の消石灰を調整する際の溶液粘度
が必要以上に高くなり、原料の処理作業上にも支障を来
す為である。In the present invention, slaked lime containing amorphous silica is used as a calcareous raw material for ALC production, and the amorphous silica in the aqueous solution used when preparing the slaked lime containing amorphous silica is 200 ppm or more. The reason for specifying 3°000 ppm is that if the amorphous silica in the aqueous solution used to prepare the slaked lime containing amorphous silica is less than 200 ppm, the effect of shortening the autoclave curing treatment time cannot be expected to be sufficient. and the amorphous silica in the aqueous solution used to prepare the slaked lime containing amorphous silica is 3
．． Even if OOOppm is exceeded, not only will the degree of improvement in the effect of improving the characteristics stagnate,
This is because the viscosity of the solution when preparing the slaked lime containing amorphous silica becomes higher than necessary, which also causes problems in processing the raw materials.
実施例Ｉ
ＦＲＰ製の容器に用意した温度５０℃の温水（冷水でも
よい）７０リツトルに対し、非晶質シリカ（純度９４％
）（ｒ商品名二ニップシールＬＰ「日本シリカニ業ｉ製
」 」 を７４ｇｒ添加して、シリケートイオン濃度１
１０００ｐｐの非晶質シリカ含有水溶液を準備し、上記
非晶質シリカ含有水溶液を十分に攪拌した後にＣａ ０
分を９６．９重量％含有する生石灰を４７ｋｇ投入し、
その後２４時間放置する消化処理を施して得た消石灰５
５重量部と、ＣａＯ分を６４．８重量％および５ｉ０２
分を２↓、５重量％含有するポルトランドセメント４重
量部と、Ｓｉｎ、分を９４．５重量％含有する珪石４１
重量部とで構成された原料組成物を得る。この組成物１
００重量部に対し、ＡＱ粒粉末０．０６重量部と水６５
重量部とを添加してスラリーとし、このスラリーを幅１
５０ｍｍ、長さ４．０ＯＲＩＱ、高さ１５０ｍ＋の鋳型
に流し込んだ後、発泡硬化させ、１８０℃にて５時間の
養生処理を施した場合、入手された製品についてはトバ
モライトの結晶性が良好であり、従来１２時間程度の養
生処理にても十分に形成されなかったトバモライトが短
時間の内に形成される事が明らかになった。 なお、上
記実施例１にて利用された消石灰を製造する際の非晶質
シリカ含有水溶液の濃度と、消化時間を種々変化させた
以外は、全て実施例１と同様にして得られた軽量気泡コ
ンクリートについて、消石灰の製造条件の変動に伴った
軽量気泡コンクリート中のトバモライトの結晶性を調査
した結果は第１表に示された如くであって、本発明の優
れている事が明らかになっている。具体的に云うと本発
明によるとトバモライト結晶性の良好な結果はシリケー
ト濃度１．ＯＯＯｐｐｍについて消化時間Ｑ、５ｈｒで
養生時間７ｈｒから発現しており、同濃度３．ＯＯＯｐ
ｐｍについては消化時間１ｈｒにつき５ｈｒに短縮され
ている。これらの結果は従来の非晶質シリカ不在のもの
が同じ条件で１２ｈｒの養生時間を費していたものに較
にで遥かに有利であることを物語っている。Example I Amorphous silica (purity 94%) was added to 70 liters of hot water (or cold water) at a temperature of 50°C prepared in an FRP container
) (rProduct name: 2 Nip Seal LP ``Made by Nippon Silikani Industry I'') was added to 74 gr to reduce the silicate ion concentration to 1.
After preparing a 1000 pp amorphous silica-containing aqueous solution and thoroughly stirring the amorphous silica-containing aqueous solution, Ca 0
47 kg of quicklime containing 96.9% by weight of
Slaked lime obtained by a digestion process that is then left for 24 hours 5
5 parts by weight, CaO content 64.8% by weight and 5i02
4 parts by weight of Portland cement containing 2↓, 5% by weight of Min, and 41 parts of silica containing 94.5% by weight of Sin, Min.
A raw material composition composed of parts by weight is obtained. This composition 1
00 parts by weight, 0.06 parts by weight of AQ grain powder and 65 parts by weight of water.
parts by weight to form a slurry, and this slurry is made into a width of 1
After pouring into a mold of 50mm, length 4.0ORIQ, height 150m+, foaming hardening and curing treatment at 180℃ for 5 hours, the obtained product showed good crystallinity of tobermorite. It has become clear that tobermorite, which conventionally was not sufficiently formed even after curing for about 12 hours, is formed within a short period of time. In addition, lightweight foams obtained in the same manner as in Example 1 except that the concentration of the amorphous silica-containing aqueous solution and the digestion time were varied in producing the slaked lime used in Example 1 above. Regarding concrete, the results of investigating the crystallinity of tobermorite in lightweight aerated concrete with changes in the manufacturing conditions of slaked lime are as shown in Table 1, and it is clear that the present invention is superior. There is. Specifically, according to the present invention, good results of tobermorite crystallinity are obtained when the silicate concentration is 1. Regarding OOOppm, it is expressed from the digestion time Q of 5 hours and the curing time of 7 hours, and the same concentration of 3. OOOp
Regarding pm, the digestion time is reduced to 5 hr per 1 hr. These results demonstrate that the conventional product without amorphous silica is far more advantageous than the product that requires 12 hours of curing time under the same conditions.
（以下余白）
第
表
Ｘ：トバモライト結晶性 不良
△：トバモライト結晶性 中庸
０：トバモライト結晶性 良好
実施例２
ＦＲＰ製の容器に用意した温度５０℃の温水７０リツト
ルに対し、非晶質シリカ（純度９４％）「商品名二ニッ
プシールＬＰｒ日本シリカニ業曲製」」 を７４ｇｒ
添加して、シリケートイオン濃度１．ＯＯＯｐｐｍの非
晶質シリカ含有水溶液を準備し、上記非晶質シリカ含有
水溶液を十分に攪拌した後にＣａ０分を９６．９重量％
含有する生石灰を４７ｋｇ投入し、その後２４時間放置
する消化処理を施して得た消石灰４↓重量部と、５ｉ０
２分を９４．５重量％含有する珪石５９重量部とで構成
された原料組成物を得る。この組成物１００重量部に対
し、ＡＱ粉末を０．０６重置部と水６５重量部とを添加
してスラリーとし、このスラリーを幅１５０ｍｍ、長さ
４００ｎｎ＋、高さ１５０ｎｗｎの鋳型に流し込んだ後
、発泡硬化させ、１８０℃にて５時間の養生処理を施し
た場合、入手された製品についてはトバモライトの結晶
性が良好であり、従来１２時間程度の養生処理にても十
分に形成されなかったトバモライトが短時間のうちに形
成されることが明らかになった。(Left below) Table X: Tobermorite crystallinity Poor △: Tobermorite crystallinity Moderate 0: Tobermorite crystallinity Good example 2 Amorphous silica (purity 94%) "Product Name: Ni Nip Seal LPr Made by Nippon Silikani Gyokyoku" 74gr
Adding the silicate ion concentration to 1. An amorphous silica-containing aqueous solution of OOOppm was prepared, and after stirring the amorphous silica-containing aqueous solution sufficiently, Ca0min was added to 96.9% by weight.
4↓ parts by weight of slaked lime obtained by adding 47 kg of quicklime and then leaving it for 24 hours for digestion, and 5i0 parts by weight.
A raw material composition composed of 59 parts by weight of silica stone containing 94.5% by weight of silica stone is obtained. To 100 parts by weight of this composition, 0.06 parts of AQ powder and 65 parts by weight of water were added to form a slurry, and this slurry was poured into a mold with a width of 150 mm, a length of 400 nn+, and a height of 150 nwn. When the product was foamed and hardened and cured for 5 hours at 180°C, the crystallinity of tobermorite was good in the obtained product, whereas conventional tobermorite was not sufficiently formed even after curing for about 12 hours. It became clear that tobermorite was formed within a short period of time.
実施例３
ＦＲＰ製の容器に用意した温度５０℃の温水７０リツト
ルに対し、非晶質シリカ（純度９４％）ｒ商品名：ニツ
プシールＬＰｒ日本シリカニ業■製」」 を７４ｇｒ
添加して、シリケートイオン濃度１１０００ｐｐの非晶
質シリカ含有水溶液を準備し、上記非晶質シリカ含有水
溶液を十分に攪拌した後にＣａ０分を９６．９重量％含
有する生石灰を４７ｋｇ投入し、その後２４時間放置す
る消化処理を施して得た消石灰２２重量部と、Ｃａ０分
を９６．９重量％含有する生石灰１６重量部とＳ ｉ
Ｏ，分を９４．５重量％含有する珪石６２重量部とで構
成された原料組成物を得る。この組成物１００重量部に
対し、ＡＱ粉末を０．０６重量部と水６５重量部とを添
加してスラリーとし、このスラリーを幅１５０ｍ、長さ
４００１１１１１、高さ１５０ＲＩの鋳型に流し込んだ
後、発泡硬化させ、工８０℃にて７時間の養生処理を施
した場合、入手された製品についてはトバモライトの結
晶性が良好であり、従来１２時間程度の養生処理にても
十分に形成されなかったトバモライトが短時間の内に形
成される事が明らかになった。Example 3 To 70 liters of hot water at a temperature of 50°C prepared in an FRP container, 74 gr of amorphous silica (purity 94%) (trade name: NIPSEAL LPr manufactured by Nippon Silikani Industry) was added.
to prepare an amorphous silica-containing aqueous solution with a silicate ion concentration of 11,000 pp, and after thoroughly stirring the amorphous silica-containing aqueous solution, 47 kg of quicklime containing 96.9% by weight of Ca0 was added, and then 22 parts by weight of slaked lime obtained by subjecting it to a digestion treatment by leaving it for a while, 16 parts by weight of quicklime containing 96.9% by weight of Ca0, and Si
A raw material composition composed of 62 parts by weight of silica stone containing 94.5% by weight of O. To 100 parts by weight of this composition, 0.06 parts by weight of AQ powder and 65 parts by weight of water were added to form a slurry, and this slurry was poured into a mold with a width of 150 m, a length of 40011111, and a height of 150 RI. When the product was foamed and hardened and then cured for 7 hours at 80°C, the crystallinity of tobermorite was good in the obtained product, whereas conventional tobermorite was not sufficiently formed even after curing for about 12 hours. It became clear that tobermorite was formed within a short period of time.
以上に示した如く、本発明を実施した場合には軽量気泡
コンクリートの製品中に、その製品特性を大いに高める
と言われているトバモライト結晶が短時間の内に形成さ
れて来る事が明らかになり、軽量気泡コンクリートの製
造工程にあって、原価の低減に大きく寄与すると言われ
ている製品製造時間の短縮化が容易に図れ、その効果も
高くなる事が立証された。As shown above, it has become clear that when the present invention is carried out, tobermorite crystals, which are said to greatly enhance the properties of lightweight cellular concrete products, are formed within a short period of time. In the manufacturing process of lightweight aerated concrete, it has been proven that the product manufacturing time, which is said to greatly contribute to cost reduction, can be easily shortened and its effects are also high.
（発明の効果）
上記の如く、本発明によれば、既存の設備を利用しなが
ら軽量気泡コンクリート構造体のオートクレーブ養生時
間を短縮する事が可能になり、軽量気泡コンクリートの
適性を増大し得る効果がある。(Effects of the Invention) As described above, according to the present invention, it is possible to shorten the autoclave curing time of a lightweight cellular concrete structure while using existing equipment, and the effect is to increase the suitability of lightweight cellular concrete. There is.
一以上一one or more one
Claims (1)
のみよりなる石灰質原料と、珪石もしくは珪砂よりなる
珪酸質原料と、水とを主要原料とする軽量気泡コンクリ
ート組成物に於いて、上記石灰質原料の一部又は全部が
非晶質シリカ包含の消石灰であり、該消石灰が水溶液を
用いて生石灰を消化して得られた消石灰であり、該水溶
液が非晶質シリカを２００ｐｐｍ以上〜３，０００ｐｐ
ｍ以下の割合で包含する様に調合された水溶液である事
を特徴とする軽量気泡コンクリート組成物。 ２、水中に非晶質シリカ粉末を添加して非晶質シリカを
２００ｐｐｍ以上３，０００ｐｐｍ以下含む水溶液を得
ること、得られた水溶液に石灰質原料を加えて消化処理
を経て消石灰を得ること、得られた消石灰に珪酸質原料
を加えて原料組成物を調製すること、この組成物にＡｌ
粉末及び水を加えてスラリーとし、このスラリーを所望
の型に注入成型して半可塑化した后水蒸気養生処理をす
ること、より成る軽量気泡コンクリートの構造体の製造
方法。 ３、原料粉末調製に於て石灰質原料の一部をセメントで
置換することを含む請求項２記載の製造方法。[Claims] 1. In a lightweight cellular concrete composition whose main raw materials are a calcareous raw material consisting of cement and lime or only lime, a siliceous raw material consisting of silica stone or silica sand, and water. , a part or all of the calcareous raw material is slaked lime containing amorphous silica, the slaked lime is slaked lime obtained by digesting quicklime using an aqueous solution, and the aqueous solution contains 200 ppm or more of amorphous silica. 3,000pp
A lightweight cellular concrete composition characterized in that it is an aqueous solution formulated so as to contain at a ratio of less than m. 2. Adding amorphous silica powder to water to obtain an aqueous solution containing 200 ppm to 3,000 ppm of amorphous silica, adding calcareous raw materials to the obtained aqueous solution and obtaining slaked lime through digestion treatment; Adding a silicate raw material to the hydrated slaked lime to prepare a raw material composition, and adding Al to this composition.
A method for manufacturing a lightweight cellular concrete structure, which comprises adding powder and water to form a slurry, injecting the slurry into a desired mold, semi-plasticizing it, and subjecting it to steam curing treatment. 3. The manufacturing method according to claim 2, which includes replacing a part of the calcareous raw material with cement in the preparation of the raw material powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18134089A JP2697745B2 (en) | 1989-07-13 | 1989-07-13 | Lightweight cellular concrete composition and method for producing same using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18134089A JP2697745B2 (en) | 1989-07-13 | 1989-07-13 | Lightweight cellular concrete composition and method for producing same using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0345573A true JPH0345573A (en) | 1991-02-27 |
| JP2697745B2 JP2697745B2 (en) | 1998-01-14 |
Family
ID=16098986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18134089A Expired - Lifetime JP2697745B2 (en) | 1989-07-13 | 1989-07-13 | Lightweight cellular concrete composition and method for producing same using same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2697745B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478343A (en) * | 2014-12-24 | 2015-04-01 | 广西大学 | Acid-leaching-method laterite-nickel-slag-based autoclaved wall material and preparation method thereof |
| CN104829181A (en) * | 2015-04-29 | 2015-08-12 | 广西大学 | Acid-leaching-method laterite-nickel-slag-based autoclaved product and preparation method thereof |
| CN111003982A (en) * | 2019-12-18 | 2020-04-14 | 湖南三一快而居住宅工业有限公司 | Ultrafine silica sand tailing powder autoclaved aerated concrete and preparation method thereof |
-
1989
- 1989-07-13 JP JP18134089A patent/JP2697745B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478343A (en) * | 2014-12-24 | 2015-04-01 | 广西大学 | Acid-leaching-method laterite-nickel-slag-based autoclaved wall material and preparation method thereof |
| CN104478343B (en) * | 2014-12-24 | 2016-07-06 | 广西大学 | A kind of acid-hatching of young eggs laterite nickel slag base steam pressure materials for wall and preparation method thereof |
| CN104829181A (en) * | 2015-04-29 | 2015-08-12 | 广西大学 | Acid-leaching-method laterite-nickel-slag-based autoclaved product and preparation method thereof |
| CN111003982A (en) * | 2019-12-18 | 2020-04-14 | 湖南三一快而居住宅工业有限公司 | Ultrafine silica sand tailing powder autoclaved aerated concrete and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2697745B2 (en) | 1998-01-14 |
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