JP2982124B1 - Artificial lightweight aggregate and manufacturing method thereof - Google Patents
Artificial lightweight aggregate and manufacturing method thereofInfo
- Publication number
- JP2982124B1 JP2982124B1 JP33499098A JP33499098A JP2982124B1 JP 2982124 B1 JP2982124 B1 JP 2982124B1 JP 33499098 A JP33499098 A JP 33499098A JP 33499098 A JP33499098 A JP 33499098A JP 2982124 B1 JP2982124 B1 JP 2982124B1
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- artificial lightweight
- lightweight aggregate
- sludge
- 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 - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
【要約】
【課題】フライアッシュ、ヘドロおよびカキ殻を活用し
た人工軽量骨材およびその製造方法を提供する。
【解決手段】フライアッシュ１００重量部とヘドロ２０
〜４０乾燥重量部とカキ殻粉砕物３〜５重量部と水ガラ
ス１０％溶液１〜５重量部と水とを混合し、その混合物
を１１２０〜１２００℃の温度で焼成する。An artificial lightweight aggregate utilizing fly ash, sludge and oyster shells and a method for producing the same are provided. SOLUTION: 100 parts by weight of fly ash and sludge 20
-40 dry parts by weight, crushed oyster shells 3-5 parts by weight, water glass 10% solution 1-5 parts by weight and water are mixed, and the mixture is fired at a temperature of 1120-1200 ° C.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、フライアッシュ、
ヘドロおよびカキ殻を活用した人工軽量骨材およびその
製造方法に関する。The present invention relates to fly ash,
The present invention relates to an artificial lightweight aggregate utilizing sludge and oyster shells and a method for producing the same.
【０００２】[0002]
【従来の技術】火力発電では、大量のフライアッシュが
発生するが、その一部はフライアッシュセメントや、タ
イル、植木鉢等の材料として利用されるものの、その大
部分は止むなく埋め立てに用いられている。焼成フライ
アッシュを用いた従来の人工軽量骨材については、ＪＩ
Ｓ−Ａ−５００２−１９９４に規定されている。しかし
ながら、焼成フライアッシュを用いた従来の人工軽量骨
材は、焼成用添加剤の使用や焼成条件などによって、高
価格となるため、市販されているものはないのが実状で
ある。2. Description of the Related Art In thermal power generation, a large amount of fly ash is generated. A part of the ash is used as a material for fly ash cement, tiles, flowerpots, etc., but most of the ash is continuously used for landfill. I have. For conventional artificial lightweight aggregates using fired fly ash, see JI
Specified in SA5002-1994. However, conventional artificial lightweight aggregates using fired fly ash are expensive due to the use of firing additives and firing conditions, and therefore, there is no actual commercially available aggregate.
【０００３】また、港湾や湖、河川など、特に生活用水
が流入する閉塞された場所には、ヘドロが堆積しやす
い。堆積したヘドロは、浚渫、陸上げ、水切りの後、セ
メントを混入してブロック化したりして埋め立てなどに
利用するが、その処理には莫大な費用がかかっている。
また、カキ殻は、産業廃棄物として処理に窮している。[0003] In addition, sludge tends to accumulate in ports, lakes, rivers and the like, particularly in closed places where domestic water flows in. The accumulated sludge is dredged, landed, drained and then mixed with cement to block it and use it for land reclamation, but the processing is enormous.
Oyster husks are in short supply as industrial waste.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、このような
従来の問題点に着目してなされたもので、フライアッシ
ュ、ヘドロおよびカキ殻を活用した人工軽量骨材および
その製造方法を提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and provides an artificial lightweight aggregate utilizing fly ash, sludge and oyster shells, and a method for producing the same. It is intended to be.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る人工軽量骨材の製造方法は、フライア
ッシュ１００重量部とヘドロ２０〜４０乾燥重量部とカ
キ殻粉砕物３〜５重量部とバインダー１〜５重量部とを
混合し、その混合物を造粒し、その造粒物を乾燥し、そ
の乾燥物を１１２０〜１２００℃の温度で焼成すること
を特徴とする。In order to achieve the above object, a method for producing an artificial lightweight aggregate according to the present invention comprises the steps of: 100 parts by weight of fly ash, 20 to 40 parts by weight of sludge, and 3 to 3 parts by weight of oyster shell. 5 parts by weight and 1 to 5 parts by weight of a binder are mixed, the mixture is granulated, the granulated substance is dried, and the dried substance is fired at a temperature of 1120 to 1200 ° C.
【０００６】本発明に係る人工軽量骨材の製造方法は、
前記混合物を造粒し、その造粒物を乾燥し、その乾燥物
を前記温度で焼成してもよい。The method for producing an artificial lightweight aggregate according to the present invention comprises:
The mixture may be granulated, the granulated product dried, and the dried product fired at the temperature.
【０００７】本発明に係る人工軽量骨材は、フライアッ
シュ１００重量部とヘドロ２０〜４０乾燥物重量部とカ
キ殻粉砕物３〜５重量部とバインダーとの混合焼成物か
ら成ることを特徴とする。[0007] The artificial lightweight aggregate according to the present invention is characterized by comprising a mixed fired product of 100 parts by weight of fly ash, 20 to 40 parts by weight of sludge, 3 to 5 parts by weight of crushed oyster shell, and a binder. I do.
【０００８】フライアッシュの化学成分の一例を表１に
示す。Table 1 shows an example of the chemical components of fly ash.
【０００９】[0009]
【表１】 [Table 1]
【００１０】カキ殻の化学成分の一例を表２に示す。Table 2 shows an example of the chemical composition of oyster shells.
【００１１】[0011]
【表２】 [Table 2]
【００１２】材料の混合の際には、適量の水、例えば、
混合物１００重量部に対し水３０−４０重量部を加える
ことが好ましい。カキ殻粉砕物およびヘドロは、フラッ
クスおよび発泡剤として作用する。カキ殻は、殆どが活
性の強いＣａＣＯ3 から成るため、骨材に石灰岩を使用
する場合の数分の１の量で足りる。カキ殻粉砕物は、フ
ライアッシュ、ヘドロおよびバインダーと混合前から粉
砕されていても、混合後に粉砕されてもよい。ヘドロ
は、底質のいかなるヘドロであってもよい。ヘドロに
は、残留Ｃや、有機物、油脂等を含むものがフラックス
および発泡剤としての効果が高いため、好ましい。バイ
ンダーには、光沢、外観が良好なため、水ガラスが好ま
しいが、メチルセルローズ、有機糊を用いてもよい。混
合するバインダーの量は、水ガラス１０％溶液の場合、
１〜５重量部が好ましい。材料には、着色剤等の公知の
添加剤を加えてもよい。When mixing the materials, an appropriate amount of water, for example,
It is preferred to add 30-40 parts by weight of water to 100 parts by weight of the mixture. Oyster hulls and sludge act as fluxes and blowing agents. Oyster hulls are mostly composed of highly active CaCO 3 , so that only a fraction of the amount of limestone used for aggregate is sufficient. The ground oyster shell may be ground before mixing with fly ash, sludge and a binder, or may be ground after mixing. The sludge may be any sludge of sediment. As the sludge, those containing residual C, organic substances, oils and fats are preferable because of their high effects as a flux and a foaming agent. As the binder, water glass is preferable because of good gloss and appearance, but methylcellulose and organic paste may be used. The amount of the binder to be mixed is as follows:
1 to 5 parts by weight is preferred. Known additives such as a coloring agent may be added to the material.
【００１３】本発明に係る人工軽量骨材の製造方法によ
れば、ＪＩＳ−Ａ−５００２−１９９４の規格を満たす
人工軽量骨材を安価に製造することができる。According to the method for producing an artificial lightweight aggregate according to the present invention, an artificial lightweight aggregate satisfying the standard of JIS-A-502-1994 can be produced at low cost.
【００１４】[0014]
【実施例１】乾燥フライアッシュ１，０００ｋｇ、乾燥
ヘドロ２００ｋｇ、カキ殻５０ｋｇ、水ガラス１０％溶
液４０リットルをポットミルに入れ、適量、３００リッ
トルの水を加えて、粒径１５０ミリミクロン以下まで微
粉砕するとともに混合し、その混合物を中型ロータリー
キルン（０．５ｍΦ×１０ｍ）に注入し、最高温度１１
５０℃で１時間、焼成し、人工軽量骨材を得た。その絶
乾比重は、１．８であった。その人工軽量骨材は、カサ
比重０．９、実積率６０％、圧縮強度１００ｋｇ／ｃｍ
2 であり、その他、ＪＩＳ−Ａ−５００２−１９９４の
規格を満たしていた。Example 1 1,000 kg of dried fly ash, 200 kg of dried sludge, 50 kg of oyster shells, and 40 liters of a 10% solution of water glass were placed in a pot mill, and an appropriate amount of 300 liters of water was added to finely reduce the particle size to 150 mm or less. The mixture is ground and mixed, and the mixture is poured into a medium-sized rotary kiln (0.5 mΦ × 10 m), and the maximum temperature is 11
Firing was performed at 50 ° C. for 1 hour to obtain an artificial lightweight aggregate. Its absolute dry specific gravity was 1.8. The artificial lightweight aggregate has a bulk specific gravity of 0.9, an actual product ratio of 60%, and a compressive strength of 100 kg / cm.
2 , and also satisfied the standards of JIS-A-5002-1994.
【００１５】[0015]
【実施例２】フライアッシュ１，０００ｇ、ヘドロ３０
０ｇ、カキ殻５０ｇを電気熱風乾燥器で乾燥した後、粒
径１５０ミリミクロン以下まで微粉砕し、水ガラス１０
％溶液４００ｍｌを加えて混練した。この混練物をパン
型実験機を用いて約１５ｍΦの造粒物を得た。この造粒
物を電気熱風乾燥器を用いて乾燥し、電気炉で１１５０
℃の温度で２時間、焼成して人工軽量骨材を得た。その
絶乾比重は、１．５であった。その人工軽量骨材は、カ
サ比重０．７５、実積率６２％、圧縮強度６５ｋｇ／ｃ
ｍ2 であり、その他、ＪＩＳ−Ａ−５００２−１９９４
の規格を満たしていた。Example 2 1,000 g fly ash, sludge 30
0 g and oyster shell 50 g were dried with an electric hot air drier and then finely pulverized to a particle size of 150 mm or less.
% Solution was added and kneaded. Using a kneaded product, a granulated product having a diameter of about 15 mφ was obtained from the kneaded product. The granulated product is dried using an electric hot air drier, and is
Calcination was performed at a temperature of 2 ° C. for 2 hours to obtain an artificial lightweight aggregate. Its absolute dry specific gravity was 1.5. The artificial lightweight aggregate has a bulk specific gravity of 0.75, an actual product ratio of 62%, and a compressive strength of 65 kg / c.
m 2, and the other, JIS-A-5002-1994
Standards were met.
【００１６】[0016]
【実施例３】フライアッシュ１，０００ｇ、ヘドロ２０
０ｇ、カキ殻５０ｇ、ＳｉＣ粉末３ｇに水ガラス１０％
溶液４００ｍｌを加えて混練した。混練物を押出成型機
で押出し、約１０ｍｍΦ径のひも状物を得た。このひも
状物を約１０ｍｍに切り、丸め機で丸めて造粒し、電気
熱風乾燥器で乾燥した。乾燥物を電気炉で１１４０℃の
温度で２時間、焼成して人工軽量骨材を得た。その絶乾
比重は、１．３であった。その人工軽量骨材は、カサ比
重０．６、実積率６０％、圧縮強度５０ｋｇ／ｃｍ2 で
あり、その他、ＪＩＳ−Ａ−５００２−１９９４の規格
を満たしていた。Example 3 1,000 g fly ash, sludge 20
0 g, oyster shell 50 g, SiC powder 3 g and water glass 10%
400 ml of the solution was added and kneaded. The kneaded material was extruded by an extruder to obtain a string having a diameter of about 10 mm. The string was cut into about 10 mm, rounded with a rounding machine, granulated, and dried with an electric hot air dryer. The dried product was fired in an electric furnace at a temperature of 1140 ° C. for 2 hours to obtain an artificial lightweight aggregate. Its absolute dry gravity was 1.3. The artificial lightweight aggregate had a bulk specific gravity of 0.6, an actual product ratio of 60%, and a compressive strength of 50 kg / cm 2 , and also satisfied the standards of JIS-A-502-1994.
【００１７】[0017]
【発明の効果】本発明に係る人工軽量骨材およびその製
造方法によれば、産業廃棄物として処理に窮していたフ
ライアッシュ、ヘドロおよびカキ殻を有効に活用するこ
とができ、比重、容積率、圧縮強度等の優れたものを安
価に製造することができる。According to the artificial lightweight aggregate and the method for producing the same according to the present invention, fly ash, sludge and oyster husk, which have been poorly treated as industrial waste, can be effectively utilized, and the specific gravity and volume It is possible to produce a product excellent in rate, compressive strength and the like at low cost.
Claims (3)
〜４０乾燥重量部とカキ殻粉砕物３〜５重量部とバイン
ダーとを混合し、その混合物を１１２０〜１２００℃の
温度で焼成することを特徴とする人工軽量骨材の製造方
法。1. 100 parts by weight of fly ash and sludge 20
A method for producing an artificial lightweight aggregate, comprising mixing -40 to 40 parts by dry weight, 3 to 5 parts by weight of ground oyster shells and a binder, and firing the mixture at a temperature of 1120 to 1200 ° C.
し、その乾燥物を前記温度で焼成することを特徴とする
請求項１記載の人工軽量骨材の製造方法。2. The method for producing an artificial lightweight aggregate according to claim 1, wherein the mixture is granulated, the granulated product is dried, and the dried product is fired at the temperature.
〜４０乾燥重量部とカキ殻粉砕物３〜５重量部とバイン
ダーとの混合焼成物から成ることを特徴とする人工軽量
骨材。3. 100 parts by weight of fly ash and sludge 20
An artificial lightweight aggregate comprising a mixed fired product of -40 dry parts by weight, 3-5 parts by weight of ground oyster shells and a binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33499098A JP2982124B1 (en) | 1998-11-09 | 1998-11-09 | Artificial lightweight aggregate and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33499098A JP2982124B1 (en) | 1998-11-09 | 1998-11-09 | Artificial lightweight aggregate and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2982124B1 true JP2982124B1 (en) | 1999-11-22 |
| JP2000143309A JP2000143309A (en) | 2000-05-23 |
Family
ID=18283504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33499098A Expired - Fee Related JP2982124B1 (en) | 1998-11-09 | 1998-11-09 | Artificial lightweight aggregate and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2982124B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK176566B1 (en) * | 2004-11-23 | 2008-09-08 | Univ Danmarks Tekniske | Process for making and using building materials |
| JP4609701B2 (en) * | 2004-11-30 | 2011-01-12 | 清水建設株式会社 | Method for manufacturing ground improvement material |
-
1998
- 1998-11-09 JP JP33499098A patent/JP2982124B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000143309A (en) | 2000-05-23 |
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|---|---|---|---|
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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