JPH035384A - Lightweight cement material - Google Patents
Lightweight cement materialInfo
- Publication number
- JPH035384A JPH035384A JP13801689A JP13801689A JPH035384A JP H035384 A JPH035384 A JP H035384A JP 13801689 A JP13801689 A JP 13801689A JP 13801689 A JP13801689 A JP 13801689A JP H035384 A JPH035384 A JP H035384A
- Authority
- JP
- Japan
- Prior art keywords
- diatomaceous earth
- weight
- heat
- treated
- cement
- 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
- 239000004568 cement Substances 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 title claims abstract description 31
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000005909 Kieselgur Substances 0.000 claims abstract description 40
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 49
- 238000010521 absorption reaction Methods 0.000 abstract description 33
- 238000000465 moulding Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 16
- 230000002940 repellent Effects 0.000 description 8
- 239000005871 repellent Substances 0.000 description 8
- 241000206761 Bacillariophyta Species 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 239000004566 building material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000010451 perlite Substances 0.000 description 2
- 235000019362 perlite Nutrition 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 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
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は軽量セメント材料に関し、詳しくは吸水によ
る寸法変化率（以下吸水変化率とする）を低減するため
の技術手段に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to lightweight cement materials, and more particularly to technical means for reducing the rate of dimensional change due to water absorption (hereinafter referred to as water absorption change rate).
（従来の技術）
近年建築材料は、構造材への負荷軽減、施工能率向上を
目的として軽量化が望まれている。セメント材料におい
ても例外ではなく、軽量化のために組成原料、成形法の
研究が行なわれている。(Prior Art) In recent years, it has been desired that building materials be made lighter in order to reduce the load on structural materials and improve construction efficiency. Cement materials are no exception, and research is being conducted on composition raw materials and molding methods to reduce weight.
セメント材料を軽量化する手段として、従来、次の手法
が知られている。The following methods are conventionally known as means for reducing the weight of cement materials.
■軽量骨材（天然軽量骨材：バーミキュライト、火山性
発泡ガラス等２人工軽量骨材ニジラスバルーン、パーラ
イト等）を組成原料の一つとする方法、
■化学反応に起因する発泡現象を利用する方法、
■発泡スチロール等の超軽量粒子を組成原料の一つとす
る方法、
■界面活性剤によって形成する泡を混合する方法。■ A method using lightweight aggregate (natural lightweight aggregate: vermiculite, volcanic foamed glass, etc. 2) Artificial lightweight aggregate Nidira balloon, perlite, etc. as one of the composition raw materials, ■ A method using the foaming phenomenon caused by chemical reactions , ■ A method in which ultra-light particles such as expanded polystyrene are used as one of the composition raw materials, and ■ A method in which foam formed by a surfactant is mixed.
ところでこれら公知の手法は、セメント材料の軽量化に
は有効であるものの、これら手法によりセメント材料を
軽量化した場合、吸水変化率が大きくなるという新たな
問題が発生する。この吸水変化率は、建築材料としての
耐久性に大きく影響し、その吸水変化率が０．１％を超
えると耐久性が低下することが知られている。この現象
は、空気中の湿分及び雨水等を吸・排出することによっ
て、セメント基材が膨張自収縮し、その膨張争収縮が繰
り返されることによって、基材中にクラックが発生する
ことによるものである。By the way, although these known methods are effective in reducing the weight of cement materials, when these methods are used to reduce the weight of cement materials, a new problem arises in that the rate of change in water absorption increases. It is known that the rate of change in water absorption greatly affects the durability as a building material, and that if the rate of change in water absorption exceeds 0.1%, the durability decreases. This phenomenon is caused by the cement base material expanding and contracting itself by absorbing and discharging moisture and rainwater from the air, and cracks occurring in the base material due to repeated expansion and contraction. It is.
このようにセメント材料を軽量化することによって吸水
変化率が大きくなり、建築材料としての耐久性が低下す
ることから、現在、かか、る吸水変化率を低減すべく苦
慮しているのが実情である。As described above, reducing the weight of cement materials increases the rate of change in water absorption and reduces the durability of the material as a building material.Currently, efforts are currently being made to reduce the rate of change in water absorption. It is.
セメント材料における吸水変化率の低減手法として、撥
水剤を組成原料中に添加する方法、或いはセメント基材
表面に撥水剤を塗布する方法等が一般に用いられている
が、これら方法には以下のような問題点がある。As a method for reducing the rate of change in water absorption in cement materials, methods such as adding a water repellent to the composition raw materials or applying a water repellent to the surface of the cement base material are generally used, but these methods include the following: There are problems such as.
■撥水剤は紫外線により劣化したり風化に弱く、撥水効
果を長期間持続できない。■Water repellents are susceptible to deterioration and weathering due to ultraviolet rays, and cannot maintain their water repellent effects for long periods of time.
■製造工程が増え、また撥水剤にコストがかかり、製品
の価格増大を招く。■The number of manufacturing steps increases, and the cost of water repellent agents increases, leading to an increase in the price of the product.
■撥水剤をセメント基材の表面に塗布する方法について
は、建築現場における切断等加工面の処理が困難であり
、加工面からの吸水を防げない。■As for the method of applying water repellent to the surface of cement base material, it is difficult to treat processed surfaces such as cuts at construction sites, and water absorption from processed surfaces cannot be prevented.
（課題を解決するための手段）
本発明はこのような課題を解決するためになされたもの
であり、その要旨は、セメン）１００重量部に対して、
１０〜１００重量部の軽量骨材。(Means for Solving the Problems) The present invention has been made to solve the above problems, and the gist thereof is that, for 100 parts by weight of cement,
10-100 parts by weight of lightweight aggregate.
０．５〜１５重量部の補強繊維、４重量部以下の成形助
材及び５００″Ｃ以上の温度にて加熱処理を施した珪藻
上を加えることにある。The purpose is to add 0.5 to 15 parts by weight of reinforcing fibers, 4 parts by weight or less of a forming aid, and diatoms heat-treated at a temperature of 500''C or higher.
尚、必要に応じて１００重量部以下の無機混和材その他
添加材を加えることは任意である。Incidentally, it is optional to add 100 parts by weight or less of inorganic admixtures and other additives as necessary.
本発明においては、別の望ましい態様として、前記加熱
処理を施した珪藻土として粉末状珪藻土又は顆粒状珪藻
土を夫々単独で若しくは混合して用いることができる。In the present invention, as another desirable embodiment, powdered diatomaceous earth or granular diatomaceous earth can be used alone or in combination as the heat-treated diatomaceous earth.
また更に別の態様として、更に、加熱処理を施していな
い生の珪藻土を、加熱処理を施した珪藻土に対する重量
比率で１：１Ｏ−１ｏｌｌの範囲で加えても良い。In yet another embodiment, raw diatomaceous earth that has not been heat-treated may be added in a weight ratio of 1:1 O-1 oll to the heat-treated diatomaceous earth.
（作用）
このように本発明は、セメント材料中に加熱処理を施し
た珪藻土を所定量加えることを特徴とするものであり、
これにより吸水による長さ変化率（以下吸水変化率とす
る）が効果的に低減することが確認されているが、その
具体的作用については明確ではない、但し推測としては
次のことが考えられる。(Function) As described above, the present invention is characterized in that a predetermined amount of heat-treated diatomaceous earth is added to the cement material.
It has been confirmed that this effectively reduces the rate of change in length due to water absorption (hereinafter referred to as the rate of change in length), but its specific effect is not clear, but the following can be speculated: .
従来より、加熱処理した生の珪藻土をセメント材料中に
加えることは知られているが、このような生の珪藻土を
セメント材料中に加えると、これを加えないものに対し
て吸水変化率がかえって増大してしまう、その理由は、
生の珪藻土は吸水し易く、しかも吸水すると、かかる生
の珪藻土が膨張変形してしまうことによるものと考えら
れる。It has been known to add heat-treated raw diatomaceous earth to cement materials, but when such raw diatomaceous earth is added to cement materials, the rate of change in water absorption is actually lower than that of cement materials without this addition. The reason for the increase is
This is thought to be due to the fact that raw diatomaceous earth easily absorbs water, and when water is absorbed, the raw diatomaceous earth expands and deforms.
これに対して、珪藻土を高温で加熱処理すると、非晶質
であった珪藻土が結晶質となり２＊分を吸収しても膨張
変化し難くなる。而してこのような加熱処理した珪藻±
をセメント材料中に加えると、多くの気孔を有する珪藻
土の粒子中に水分が取り込まれ、しかも加熱処理した珪
藻土は水分を吸収しても膨張変化し難いことから、結果
としてセメント材料の吸水変化が抑制されるものと考え
られる。またこれとは別に、セメント材料中に加えた珪
藻上が架橋材として作用することにより、セメントマト
リックスを強固に結合し、このことが吸水による変化率
を抑えるように作用しているとも考えられる。On the other hand, when diatomaceous earth is heat-treated at a high temperature, the amorphous diatomaceous earth becomes crystalline and becomes difficult to expand and change even if it absorbs 2*. Therefore, such heat-treated diatoms±
When added to the cement material, water is incorporated into the particles of diatomaceous earth, which has many pores, and heat-treated diatomaceous earth does not easily expand and change even if it absorbs water, so as a result, the water absorption of the cement material changes. It is thought that this will be suppressed. Separately from this, it is also thought that the diatoms added to the cement material act as a crosslinking agent to firmly bind the cement matrix, and this acts to suppress the rate of change due to water absorption.
本発明においては、珪藻土として粉末状或いは顆粒状の
ものを夫々単独で若しくは混合して用いることができ、
またコスト低減のための増量材として或いは成形性を向
上させるために、必要に応じて加熱処理を施していない
生の珪藻土を加えることも可能である。但し生の珪藻土
を加える場合には、その添加量を、加熱処理した珪藻土
に対する比率で１：１０〜１０：１（加熱処理した珪藻
土：生の珪藻土）の範囲に抑える必要があり、更に望ま
しくはｌ：２〜２：ｌの範囲に抑えるのが良い。In the present invention, powdered or granular diatomaceous earth can be used alone or in combination,
In addition, raw diatomaceous earth that has not been heat-treated can be added as a filler for cost reduction or to improve moldability, if necessary. However, when adding raw diatomaceous earth, the amount added must be kept within the range of 1:10 to 10:1 (heat-treated diatomaceous earth: raw diatomaceous earth) in terms of ratio to heat-treated diatomaceous earth, and more preferably. It is preferable to keep it within the range of l:2 to 2:l.
（発明の効果）
以上のように本発明によれば、セメント材料の軽量性を
確保しつつ吸水変化率を容易に低減でき、以てセメント
材料の耐久性を向上させることができる。(Effects of the Invention) As described above, according to the present invention, the water absorption change rate can be easily reduced while ensuring the lightness of the cement material, thereby improving the durability of the cement material.
また本発明によれば撥水剤等の添加による吸水止めを必
要とせず、これにより工程数も減少してコストも低減す
る。Further, according to the present invention, there is no need to prevent water absorption by adding a water repellent or the like, which reduces the number of steps and costs.
更に建築現場において、建材（セメント基材）加工面（
切断面、穴空は部分等）に対して吸水防止のための処理
を施す必要がなく、加えて撥水剤添加の場合のように吸
水防止剤が経年変化して効果を失うことがなく、当初の
低い吸水変化率を維持し得るなど優れた利点が生ずる。Furthermore, at construction sites, the processed surface of building materials (cement base material) (
There is no need to apply treatment to prevent water absorption (cut surfaces, holes, etc.), and in addition, the water absorption preventive agent does not change over time and lose its effectiveness, unlike when adding a water repellent. Excellent advantages arise, such as being able to maintain the initial low rate of change in water absorption.
（実施例）
次に本発明の特徴を更に明確にすべく、以下にその実施
例を詳述する。(Example) Next, in order to further clarify the characteristics of the present invention, examples thereof will be described in detail below.
［実施例１］
セメント１００重量部に対し、軽量骨材５０重量部、補
強繊維１０重量部、押出成形助材３重量部及び４５０℃
〜１０００℃の種々温度で加熱処理した粉末状珪藻土を
５０重量部混合してこれに適度の水を加えて混練し、押
出成形にて断面１１０Ｘ１００■の平板を得た０次にこ
の成形体を気中養生した後、温度６０℃、湿度１００％
で８時間蒸気養生し、その後温度１６０℃で１２時間オ
ートクレーブ養生してサンプルとした。そしてこのサン
プルについてＪＩＳ５４２８に規定される吸水による長
さ変化率測定法に準じて吸水変化率を測定し、珪藻土の
加熱処理温度と吸水変化率との関係を求めた。結果を第
１図に示す。[Example 1] 100 parts by weight of cement, 50 parts by weight of lightweight aggregate, 10 parts by weight of reinforcing fibers, 3 parts by weight of extrusion molding aid, and 450°C.
50 parts by weight of powdered diatomaceous earth heat-treated at various temperatures of ~1000°C was mixed, mixed with an appropriate amount of water, and extruded to obtain a flat plate with a cross section of 110 x 100 cm. After curing in the air, the temperature is 60℃ and the humidity is 100%.
The sample was steam-cured for 8 hours at a temperature of 160°C, and then autoclaved for 12 hours at a temperature of 160°C. The water absorption change rate of this sample was measured according to the method for measuring the length change rate due to water absorption specified in JIS 5428, and the relationship between the heat treatment temperature of diatomaceous earth and the water absorption change rate was determined. The results are shown in Figure 1.
［実施例２］
セメント１００重量部に対して、軽量骨材１００重量部
、補強繊ｉ５重量部及び８００℃にて加熱処理した粉末
状珪藻土を１００重量部までの範囲で加えて混合した後
、適度の水を加えて混練し、加圧成形機にてｌ０Ｘ１０
０Ｘ１００■膳の形状に成形して平板を得た。これを第
１の実施例と同様の条件で硬化反応処理してサンプルを
得た。そしてこのサンプルについてＪＩＳ５４２８に規
定される吸水による長さ変化率測定法に準じて吸水変化
率を測定し、珪藻土の添加量と吸水変化率との関係を求
めたところ、第２図の如き結果を得た。[Example 2] To 100 parts by weight of cement, 100 parts by weight of lightweight aggregate, 5 parts by weight of reinforcing fibers, and up to 100 parts by weight of powdered diatomaceous earth heat-treated at 800°C were added and mixed. Add appropriate amount of water, knead, and use a pressure molding machine to form 10×10
A flat plate was obtained by molding into the shape of a 0x100 square plate. This was subjected to a curing reaction treatment under the same conditions as in the first example to obtain a sample. The rate of change in length due to water absorption was measured for this sample according to the method for measuring the rate of change in length due to water absorption specified in JIS 5428, and the relationship between the amount of diatomaceous earth added and the rate of change in water absorption was determined, and the results shown in Figure 2 were obtained. Obtained.
［実施例３］
セメン）１００重量部に対して、軽量骨材５０重量部、
補強縁、＠ｉｏ重量部、押出成形助材３重量部及び粒子
径１ｍｍ、粒子長１〜５脂厘に成形した珪藻土を８００
℃にて加熱処理して成る顆粒状珪藻土５０重量部を加え
て混合した後、適度の水を加えて混練し、押出成形にて
断面１０ＸＬｏｏｍｍの平板を得た０次にこの成形体を
第１の実施例と同様の条件で硬化反応処理してサンプル
をｉた。そしてこのサンプルについてＪＩＳ５４２８に
規定される吸水による長さ変化率測定法に準じて吸水変
化率を測定したところ０．０８％であった。[Example 3] 100 parts by weight of cement, 50 parts by weight of lightweight aggregate,
Reinforcement edge, @io weight part, 3 weight parts of extrusion molding aid, and 800 g of diatomaceous earth molded to particle size 1 mm and particle length 1 to 5 mm.
After adding and mixing 50 parts by weight of granular diatomaceous earth heat-treated at ℃, an appropriate amount of water was added and kneaded, and a flat plate with a cross section of 10XLoomm was obtained by extrusion molding. The samples were subjected to a curing reaction treatment under the same conditions as in Example 1. The water absorption change rate of this sample was measured according to the method for measuring the length change rate due to water absorption specified in JIS 5428, and was found to be 0.08%.
［実施例４］
セメント１００重量部に対し、軽量骨材５０重量部、補
強繊維１０重量部、押出成形助材３重量部及び８００℃
にて加熱処理した粉末状珪藻±５０重量部、更に加熱処
理を施していない生の珪藻上を、加熱処理した珪藻土と
生珪藻上との比率がＯ：１０〜１０：０の範囲で添加し
て混合した後、適度の水を加えて混練し、押出成形にて
断面１１０Ｘ１００■の平板を得た。これを第１の実施
例と同様の条件で硬化反応処理してサンプルを得た。そ
してこのサンプルについてＪＩＳ５４２８に規定される
吸水による長さ変化率測定法に準じて吸水変化率を測定
したところ、第３図に示す結果を得た。また成形時の成
形性を観察したところ第１表の如くであった。[Example 4] 100 parts by weight of cement, 50 parts by weight of lightweight aggregate, 10 parts by weight of reinforcing fibers, 3 parts by weight of extrusion aid, and 800°C.
± 50 parts by weight of powdered diatoms heat-treated in , and further raw diatoms that have not been heat-treated are added in a ratio of heat-treated diatomaceous earth to raw diatoms in the range of O: 10 to 10: 0. After mixing, an appropriate amount of water was added and kneaded, and a flat plate with a cross section of 110 x 100 cm was obtained by extrusion molding. This was subjected to a curing reaction treatment under the same conditions as in the first example to obtain a sample. When the water absorption change rate of this sample was measured according to the method for measuring the length change rate due to water absorption specified in JIS 5428, the results shown in FIG. 3 were obtained. Furthermore, the moldability during molding was observed and was as shown in Table 1.
尚以上４つの何れの実施例においても、セメントとして
普通ポルトランドセメントを、軽量骨材としてパーライ
トを、補強繊維としてポリプロピレン短ｉａｍ、古紙パ
ルプを、また押出成形助材としてメチルセルロースを夫
々用いた。In all of the above four examples, ordinary Portland cement was used as the cement, perlite was used as the lightweight aggregate, polypropylene short iam and waste paper pulp were used as the reinforcing fibers, and methyl cellulose was used as the extrusion molding aid.
第１表：成形実験結果
以上の結果に示しているように、セメント材料の一原料
として加熱処理した珪藻土を用いることにより、従来か
らの懸案であった吸水変化率を低減することができる。Table 1: Molding experiment results As shown in the above results, by using heat-treated diatomaceous earth as a raw material for cement material, the rate of change in water absorption, which has been a concern in the past, can be reduced.
以上本発明の実施例を詳述したが、これはあくまで本発
明の一実施例であり、本発明はその他の態様で実施可能
である。Although the embodiment of the present invention has been described in detail above, this is merely one embodiment of the present invention, and the present invention can be implemented in other embodiments.
例えば必要に応じて珪石、砕石等の無ａ混和材を加える
ことも可能であるし、Ｈ＆雑としてアスベスト、石綿、
ガラス繊維、炭素繊維等の無機ｍ維或いはポリビニルア
ルコール、アクリルニトリル、ポリエチレン等有機繊維
を用いることもでき、また軽量骨材としてシラスバルー
ンその他−般に用いられているものを使用することも可
能である。For example, it is possible to add non-aluminum admixtures such as silica stone and crushed stone as necessary, and asbestos, asbestos,
Inorganic fibers such as glass fibers and carbon fibers, or organic fibers such as polyvinyl alcohol, acrylonitrile, and polyethylene can also be used, and it is also possible to use commonly used materials such as shirasu balloons as lightweight aggregates. be.
第１図は本発明の実施例において得られた珪藻土に対す
る加熱処理温度と吸水変化率との関係を示す図、第２図
は本発明の実施例において得られた加熱処理珪藻土の添
加量と吸水変化率との関係を示す図、第３図は更に本発
明の実施例において得られた生球藻土の添加量と吸水変
化率との関係を示す図である。
第１図
第２図
珪藻土加熱処理温度（℃）
（５）
加熱処理珪藻土添加量
（対セメント重量部）Figure 1 is a diagram showing the relationship between the heat treatment temperature and water absorption change rate for diatomaceous earth obtained in the example of the present invention, and Figure 2 is a diagram showing the amount of addition and water absorption of the heat-treated diatomaceous earth obtained in the example of the present invention. FIG. 3 is a diagram showing the relationship between the amount of fresh algae added and the rate of change in water absorption obtained in an example of the present invention. Figure 1 Figure 2 Diatomaceous earth heat treatment temperature (°C) (5) Addition amount of heat treated diatomaceous earth (parts by weight of cement)
Claims (3)
量部の軽量骨材、０．５〜１５重量部の補強繊維、４重
量部以下の成形助材及び５００℃以上の温度にて加熱処
理を施した珪藻土を加えて成る軽量セメント材料。(1) For 100 parts by weight of cement, 10 to 100 parts by weight of lightweight aggregate, 0.5 to 15 parts by weight of reinforcing fibers, 4 parts by weight or less of forming aids, and heat treatment at a temperature of 500°C or higher A lightweight cement material made by adding treated diatomaceous earth.
土又は顆粒状珪藻土を夫々単独で若しくは混合して用い
ることを特徴とする請求項（１）に記載の軽量セメント
材料。(2) The lightweight cement material according to claim (1), wherein the heat-treated diatomaceous earth includes powdered diatomaceous earth or granular diatomaceous earth, either alone or in combination.
いて、更に加熱処理を施していない生の珪藻土を、加熱
処理した珪藻土に対する重量比率で１：１０〜１０：１
の範囲で加えて成ることを特徴とする軽量セメント材料
。(3) In the lightweight cement material according to claim (1) or (2), the weight ratio of the raw diatomaceous earth that has not been further heat-treated to the heat-treated diatomaceous earth is 1:10 to 10:1.
A lightweight cement material characterized by comprising in addition a range of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1138016A JPH0729864B2 (en) | 1989-05-31 | 1989-05-31 | Lightweight cement material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1138016A JPH0729864B2 (en) | 1989-05-31 | 1989-05-31 | Lightweight cement material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH035384A true JPH035384A (en) | 1991-01-11 |
| JPH0729864B2 JPH0729864B2 (en) | 1995-04-05 |
Family
ID=15212089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1138016A Expired - Lifetime JPH0729864B2 (en) | 1989-05-31 | 1989-05-31 | Lightweight cement material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729864B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3038117U (en) * | 1996-11-22 | 1997-06-06 | 株式会社エムアンドケー | Wood cement board |
| JP2005170730A (en) * | 2003-12-10 | 2005-06-30 | Fantasu Kogyo:Kk | Cement modifier |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930119A (en) * | 1972-07-19 | 1974-03-18 | ||
| JPS51123218A (en) * | 1975-04-21 | 1976-10-27 | Nozawa Kk | Method for manufacture of light fire proof building material |
| JPS52108424A (en) * | 1976-03-09 | 1977-09-10 | Kubota Ltd | Production method of board material for construction |
| JPS55124605A (en) * | 1979-03-19 | 1980-09-25 | Kubota Ltd | Preparation of light building material by extrusion molding |
| JPS58115055A (en) * | 1981-12-28 | 1983-07-08 | 住友金属鉱山株式会社 | Manufacture of lightweight calcium silicate hydrate formed body |
| JPS6241774A (en) * | 1985-08-15 | 1987-02-23 | 株式会社アスク | Non-burnt refractory heat insulator |
| JPS63239141A (en) * | 1987-03-27 | 1988-10-05 | 住友金属工業株式会社 | Manufacture of lightweight calcium silicate formed body |
-
1989
- 1989-05-31 JP JP1138016A patent/JPH0729864B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930119A (en) * | 1972-07-19 | 1974-03-18 | ||
| JPS51123218A (en) * | 1975-04-21 | 1976-10-27 | Nozawa Kk | Method for manufacture of light fire proof building material |
| JPS52108424A (en) * | 1976-03-09 | 1977-09-10 | Kubota Ltd | Production method of board material for construction |
| JPS55124605A (en) * | 1979-03-19 | 1980-09-25 | Kubota Ltd | Preparation of light building material by extrusion molding |
| JPS58115055A (en) * | 1981-12-28 | 1983-07-08 | 住友金属鉱山株式会社 | Manufacture of lightweight calcium silicate hydrate formed body |
| JPS6241774A (en) * | 1985-08-15 | 1987-02-23 | 株式会社アスク | Non-burnt refractory heat insulator |
| JPS63239141A (en) * | 1987-03-27 | 1988-10-05 | 住友金属工業株式会社 | Manufacture of lightweight calcium silicate formed body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3038117U (en) * | 1996-11-22 | 1997-06-06 | 株式会社エムアンドケー | Wood cement board |
| JP2005170730A (en) * | 2003-12-10 | 2005-06-30 | Fantasu Kogyo:Kk | Cement modifier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729864B2 (en) | 1995-04-05 |
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