JPH0474775A - Light precast concrete, production thereof, ready mixed light concrete and production thereof - Google Patents

Light precast concrete, production thereof, ready mixed light concrete and production thereof

Info

Publication number
JPH0474775A
JPH0474775A JP2186749A JP18674990A JPH0474775A JP H0474775 A JPH0474775 A JP H0474775A JP 2186749 A JP2186749 A JP 2186749A JP 18674990 A JP18674990 A JP 18674990A JP H0474775 A JPH0474775 A JP H0474775A
Authority
JP
Japan
Prior art keywords
porous
weight
incinerated ash
wood chips
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
Application number
JP2186749A
Other languages
Japanese (ja)
Other versions
JPH0641392B2 (en
Inventor
Sueo Mochizuki
季雄 望月
Eiji Watanabe
渡邉　ひで治
Misao Sakai
酒井　操
Kaname Hori
堀　要
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MOCHIZUKI BLOCK KOGYO KK
O G KK
TOKAI PULP KK
Nisshoku Corp
Original Assignee
MOCHIZUKI BLOCK KOGYO KK
O G KK
TOKAI PULP KK
Nisshoku Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MOCHIZUKI BLOCK KOGYO KK, O G KK, TOKAI PULP KK, Nisshoku Corp filed Critical MOCHIZUKI BLOCK KOGYO KK
Priority to JP18674990A priority Critical patent/JPH0641392B2/en
Publication of JPH0474775A publication Critical patent/JPH0474775A/en
Publication of JPH0641392B2 publication Critical patent/JPH0641392B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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

  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE:To obtain the subject light precast concrete having an excellent strength and excellent in heat insulation, soundproofing and fire resistance at a low cost by adding cement, pea gravels, sand and water to a porous incinerated ash obtained by burning papermaker's sludge and wood chips, kneading the resultant mixture, molding the kneaded material and curing the molded material. CONSTITUTION:To a porous incinerated ash obtained by burning papermakers sludge and wood chips at 750-800 deg.C, (A) 20-30 wt.% cement, (B) 0-35 wt.% pea gravels, (C) 0-40 wt.% sand and a suitable amount of water are added and the resultant mixture is kneaded, molded and cured, thus obtaining the objective light precast concrete. The other objective ready mixed light concrete is produced by adding (E) 60-70 wt.% cement, (F) 150-250 wt.% sand and a suitable amount of water to the above-mentioned porous incinerated ash and kneading the resultant mixture.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、軽量コンクリートブロックや軽量コンクリー
ト煉瓦などの軽量コンクリート製品とその製造方法およ
び軽量生コンクリート（以下、軽量生コンと云う）とそ
の製造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to lightweight concrete products such as lightweight concrete blocks and lightweight concrete bricks, and methods for producing the same, and lightweight ready-mixed concrete (hereinafter referred to as "lightweight ready-mixed concrete") and methods for producing the same. Regarding.

〔従来の技術〕[Conventional technology]

従来の軽量コンクリート製品や軽量生コン（以下、両者
を総称するときは、軽量コンクリート製品等と云う）に
は、天然の軽石、火山礫、高炉スラグ、石炭殻などの天
然の軽量骨材が用いられていたが、性能の点で問題があ
るところから、近年においては、頁岩、スレート、粘土
、或いはフライアンシュを高い温度に焼成して造られた
人工軽量骨材が用いられるようになってきている。Conventional lightweight concrete products and lightweight ready-mixed concrete (hereinafter collectively referred to as lightweight concrete products, etc.) use natural lightweight aggregates such as natural pumice, volcanic lapilli, blast furnace slag, and coal husks. However, due to performance issues, in recent years artificial lightweight aggregates made by firing shale, slate, clay, or flyash at high temperatures have come to be used. There is.

〔発明が解決しようとする課題］ 上記人工軽量骨材を用いた軽量コンクリート製品等は、
それ自体の重量が低下し、それによって補強用の鋼材と
基礎に要する費用の！ｆｆ減に有効であるといった優れ
た利点を存するものの、上述の人工軽量骨材はそれ自体
高価であり、従って、このような人工軽量骨材を用いた
軽量コンクリート製品等は依然として高価であり、この
点に欠点があった。[Problem to be solved by the invention] Lightweight concrete products using the above artificial lightweight aggregate, etc.
Its own weight is reduced, thereby reducing the cost of reinforcing steel and foundations! Although it has excellent advantages such as being effective in reducing FF, the above-mentioned artificial lightweight aggregates are themselves expensive, and therefore lightweight concrete products using such artificial lightweight aggregates are still expensive. There were some drawbacks.

ところで、製紙工業においては大量の製紙汚泥が生成さ
れるが、この製紙汚泥は一般に含水率が高く、自燃性が
ないところがら、現状においては、これを乾燥処理、圧
搾処理を施した後、焼却処理を行い、その焼却灰を廃棄
処分し、これを積極的に利用していない。By the way, a large amount of papermaking sludge is produced in the paper industry, and although this papermaking sludge generally has a high moisture content and is not self-combustible, it is currently incinerated after drying and squeezing. The incineration ash is disposed of and is not actively utilized.

そこで、本発明者は上記製紙汚泥の有効利用を図るべく
鋭意研究を重ねた結果、特定の条件下において製紙汚泥
と木材チップとを燃焼させると、比重が水に比べてかな
り小さい（０，６程度）多孔性焼却灰が得られ、この多
孔性焼却灰を上記の人工軽量骨材と同様に使用できるこ
とを見出した。Therefore, as a result of intensive research aimed at effectively utilizing the above-mentioned paper sludge, the present inventor found that when paper sludge and wood chips are combusted under specific conditions, the specific gravity is considerably lower than that of water (0.6 It has been found that porous incineration ash can be obtained and that this porous incineration ash can be used in the same manner as the artificial lightweight aggregate described above.

本発明は、上記知見に基づいてなされたもので、その目
的とするところは、従来のものと同様に軽くて優れた強
度を有することは勿論のこと、断熱性、防音性、防火性
などが良好であるといった優れた特性の軽量コンクリー
ト製品等を安価に得ることにある。The present invention was made based on the above knowledge, and its purpose is not only to be light and have excellent strength like the conventional ones, but also to have good heat insulation, soundproofing, fireproofing properties, etc. The object of the present invention is to obtain lightweight concrete products etc. with excellent properties at low cost.

〔課題を解決するための手段〕[Means to solve the problem]

上述の目的を達成するため、本発明に係る軽量コンクリ
ート製品は、製紙汚泥と木材チップとを７５０〜８００
℃の温度で燃焼させて得られる多孔性焼却灰と、多孔性
焼却灰に対して２０〜３０重量％のセメントと、多孔性
焼却灰に対して０〜３５重量％の豆砂利と、多孔性焼却
灰に対して０〜４０重量％の砂と、適量の水とからなる
混練物を成形した後、養生硬化した点に特徴がある。In order to achieve the above-mentioned object, the lightweight concrete product according to the present invention contains paper sludge and wood chips at a concentration of 750 to 800
Porous incinerated ash obtained by combustion at a temperature of It is characterized in that a kneaded material consisting of 0 to 40% by weight of sand based on incinerated ash and an appropriate amount of water is molded and then cured and hardened.

また、本発明に係る軽量生コンクリートは、製紙汚泥と
木材チップとを７５０〜８００″Ｃの温度で燃焼させて
得られる多孔性焼却灰と、多孔性焼却灰に対して６０〜
７０重量％のセメントと、多孔性焼却灰に対して１５０
〜２５０重量％の砂と、適量の水とを混練した点に特徴
がある。In addition, the lightweight ready-mixed concrete according to the present invention uses porous incinerated ash obtained by burning paper sludge and wood chips at a temperature of 750 to 800"C, and
70% by weight cement and 150% for porous incineration ash
It is characterized by kneading ~250% by weight of sand and an appropriate amount of water.

〔作用〕[Effect]

上記特徴的構成よりなる軽量コンクリート製品等におい
ては、人工軽量骨材として、製紙汚泥と木材チップとを
７５０〜８００”Ｃの温度で燃焼させて得られる多孔性
焼却灰を用いているので、適宜の軽さで、しかも、適宜
の強度を有することは勿論のこと、大幅なコストダウン
を図れ、この種の軽量コンクリート製品等を安価に得る
ことができる。In lightweight concrete products with the above-mentioned characteristic structure, porous incineration ash obtained by burning paper sludge and wood chips at a temperature of 750 to 800"C is used as the artificial lightweight aggregate. Not only is it lightweight and has appropriate strength, but it also allows for significant cost reductions, making it possible to obtain lightweight concrete products of this type at low cost.

また、従来、産業廃棄物として厄介もの扱いをされてき
た製紙汚泥を有効に利用することができるといった利点
もある。Another advantage is that paper sludge, which has traditionally been treated as a nuisance as industrial waste, can be used effectively.

〔実施例〕〔Example〕

以下、本発明の一実施例を図面を参照しながら説明する
。An embodiment of the present invention will be described below with reference to the drawings.

第１図は本発明に係る軽量コンクリート製品等の製造工
程を概略的に示し、この図において、ｌは燃焼処理装置
で、その燃焼室２の内部下方に階段式ストーカ３が設け
である。４．５はそれぞれストーカ２の上流側に形成さ
れた製紙汚泥供給用ホッパ、木材チップ供給用ホッパで
ある。６はストーカ３の下流側に設けられた灰出し用コ
ンベヤ、７はコンベヤ６によって搬出された多孔性焼却
灰８（この多孔性焼却灰８については後述する）を貯留
する灰置き場、９はストーカ３の下方に設けられたりド
リングコンヘヤ、１ｏはバーナである。１１は燃焼室２
の上方に連なるボイラ、１２は集塵装置、１３は誘引通
風機、工４は湿式スクラバである。FIG. 1 schematically shows the manufacturing process of lightweight concrete products, etc. according to the present invention. In this figure, l is a combustion treatment device, and a stepped stoker 3 is provided in the lower part of the interior of the combustion chamber 2. Reference numerals 4 and 5 denote a hopper for supplying paper sludge and a hopper for supplying wood chips, respectively, which are formed on the upstream side of the stoker 2. 6 is an ash removal conveyor provided downstream of the stoker 3; 7 is an ash storage area for storing porous incinerated ash 8 (the porous incinerated ash 8 will be described later) carried out by the conveyor 6; 9 is a stoker 3 is a drinking conveyor, and 1o is a burner. 11 is combustion chamber 2
12 is a dust collector, 13 is an induced draft fan, and 4 is a wet scrubber.

そして、１５．１６はそれぞれ貯留槽１７．１８に貯留
された製紙汚泥、木材チップである。製紙汚泥１５とし
ては、通常、灰分が２５％以下のものを用いることが好
ましい。灰分が２５％以下の製紙汚泥１５は乾燥または
圧搾処理して水分を５２％程度まで落とすことによりス
トーカ３における燃焼が可能になる。また、木材チップ
１６としては、廃木材チップを用いることが可能であり
、通常、５〜５０１程度の大きさのものを用いることが
好ましい、この木材チップ１６もストーカ３において自
己燃焼させるためには水分が４５％程度以下のものを用
いることが好ましい。製紙汚泥１５および木材チップ１
６の水分の調整は従来から周知の方法によって行うこと
ができ、製紙汚泥供給用ホッパ４および木材チップ供給
用ホッパ５に供給する前に適当な水分量にしておくのが
好ましい。15 and 16 are paper sludge and wood chips stored in storage tanks 17 and 18, respectively. As the papermaking sludge 15, it is usually preferable to use one having an ash content of 25% or less. The papermaking sludge 15 having an ash content of 25% or less can be burned in the stoker 3 by drying or compressing it to reduce the water content to about 52%. Further, as the wood chips 16, it is possible to use waste wood chips, and it is usually preferable to use ones with a size of about 5 to 501. It is preferable to use one with a moisture content of about 45% or less. Paper sludge 15 and wood chips 1
The water content in step 6 can be adjusted by a conventionally known method, and it is preferable to adjust the water content to an appropriate amount before supplying the paper sludge to the papermaking sludge supply hopper 4 and the wood chip supply hopper 5.

製紙汚泥１５および木材チップ１６はホイストクレーン
など適宜の手段を用いて、製紙汚泥供給用ホッパ４およ
び木材チップ供給用ホッパ５に投入され、それぞれ所定
の供給量に調節されてストーカ３上に供給される。この
ときの製紙汚泥１５および木材チップ１６の供給状態は
、製紙汚泥１５が下層に、木材チップ１６が上層になる
ようにするのが好ましいが、この逆にしてもよく、製紙
汚泥１５が木材チップ１６と共に完全燃焼すればよい。Paper manufacturing sludge 15 and wood chips 16 are put into a paper manufacturing sludge supply hopper 4 and a wood chip supply hopper 5 using appropriate means such as a hoist crane, and are respectively adjusted to predetermined supply amounts and supplied onto the stoker 3. Ru. At this time, it is preferable that the paper sludge 15 and the wood chips 16 are supplied so that the paper sludge 15 is in the lower layer and the wood chips 16 are in the upper layer. All it has to do is complete combustion together with 16.

そして、製紙汚泥１５および木材チップ１６の供給量は
それぞれの性状によっても異なるが、製紙汚泥１５と木
材チ・２プ１６との重量比は、製紙汚泥１５：木材チッ
プ１６−７０〜８０　：　３０〜２０となるようにする
のがよく、また、ストーカ３上に供給した両者の層厚の
比は、木材チップ１６：製紙汚泥１５＝　１　：　１．
０５〜１．１５となるようにするのがよい。Although the supply amounts of paper sludge 15 and wood chips 16 vary depending on their respective properties, the weight ratio of paper sludge 15 and wood chips 16 is 70 to 80: 30. 20, and the ratio of the thicknesses of the two layers supplied onto the stoker 3 is as follows: wood chips 16:paper sludge 15=1:1.
It is preferable to set the value between 05 and 1.15.

そして、燃焼室２には、詳細に図示してないが、−次押
込み通風機、二次押込み通風機、誘引通風機１３、ガス
再循環通風機などにより、−次空気一次空気および再循
環ガスがそれぞれ供給されるように構成されている。ま
た、燃焼室２には温度検出センサが設けてあり、ストー
カ３上における製紙汚泥１５および木材チップ１６の燃
焼温度が７５０〜８００″Ｃになるように制御している
。なお、燃焼室２の壁面は全面が水冷壁構造に形成され
ており、熱吸収が図られている。Although not shown in detail, the combustion chamber 2 is provided with primary air and recirculated gas by a secondary forced draft fan, a secondary forced draft fan, an induced draft fan 13, a gas recirculation fan, etc. are configured to be supplied respectively. Further, the combustion chamber 2 is provided with a temperature detection sensor, and is controlled so that the combustion temperature of the papermaking sludge 15 and wood chips 16 on the stoker 3 is 750 to 800''C. The entire wall surface is formed into a water-cooled wall structure to absorb heat.

ストーカ３上に供給された製紙汚泥１５と木材チップ１
６は火床の火格子の往復差動により緩やかに降下しつつ
、前記空気およびガスにより乾燥し、バーナ１０によっ
て着火されて燃焼する。このときの燃焼温度が８００℃
を超えると灰分（スランジ）が溶融するため多孔性焼却
灰８が得られず、また、７５０℃未満では未燃分が多く
なり、所望の多孔性焼却灰８が得られない。Paper sludge 15 and wood chips 1 supplied onto stoker 3
6 is slowly lowered by the reciprocating differential movement of the grate on the fire bed, is dried by the air and gas, and is ignited by the burner 10 to burn. The combustion temperature at this time is 800℃
If the temperature exceeds 750° C., porous incinerated ash 8 will not be obtained because the ash content (slange) will melt, and if it is below 750° C., the unburned content will increase and the desired porous incinerated ash 8 will not be obtained.

このようにしてストーカ３上で製紙汚泥１５および木材
チップ１６が燃焼することによって生じた多孔性焼却灰
８は、灰出し用コンベヤ６によって燃焼室２から搬出さ
れて灰置き場７に貯留される。The porous incineration ash 8 generated by the combustion of the papermaking sludge 15 and wood chips 16 on the stoker 3 in this manner is carried out from the combustion chamber 2 by the ash removal conveyor 6 and stored in the ash storage area 7.

この多孔性焼却灰８は冷却された後、所定の粒径（１０
ｍ以下）になるように解砕される。そして、この多孔性
焼却灰８は比重が約０．６と軽く、また、断熱性、防音
性、防火性に冨む。After this porous incineration ash 8 is cooled, it has a predetermined particle size (10
m or less). This porous incineration ash 8 has a light specific gravity of about 0.6, and is rich in heat insulation, soundproofing, and fireproofing properties.

次に、上述のようにして得られた多孔性焼却灰８を用い
て軽量コンクリートブロックや軽量コンクリート煉瓦な
どの軽量コンクリート製品を得る方法について説明する
と、第１図の下方に示すように、ミキサー１９内に、材
料として多孔性焼却灰８とセメント２０と豆砂利２１と
砂２２と水２３とを所定量投入してこれらを十分に混練
し、その後、この混練物を所定の成形１１２４に供給し
、例えば押し出し成形し、成形機２４から取り出して、
ＪＩＳ　Ａ　５４０６（日本工業規格　空洞コンクリー
トブロック）に定めるところの養生を行うことによって
軽量コンクリート製品としての軽量コンクリートブロッ
ク２５を得ることができる。Next, a method for obtaining lightweight concrete products such as lightweight concrete blocks and lightweight concrete bricks using the porous incineration ash 8 obtained as described above will be explained.As shown in the lower part of FIG. A predetermined amount of porous incinerated ash 8, cement 20, pea gravel 21, sand 22, and water 23 as materials are put in and thoroughly kneaded, and then this kneaded material is supplied to a predetermined molding 1124. , for example, extrusion molded, taken out from the molding machine 24,
A lightweight concrete block 25 as a lightweight concrete product can be obtained by performing curing as specified in JIS A 5406 (Japanese Industrial Standards Hollow Concrete Block).

下表は本発明に従って製造した軽量コンクリートブロッ
ク２５における前記各材料の配合量（単位はＫｇ）を示
す。The table below shows the blending amounts (in kg) of each of the above-mentioned materials in the lightweight concrete block 25 manufactured according to the present invention.

上記■〜Ｖの配合による軽量コンクリートブロック２５
は、４週間後における圧縮強度および２時間浸水後にお
ける圧縮強度は、いずれも４０Ｋｇ／ｃｄ以上を示し、
前記ＪＩＳで規定するＡ種ブロンクの圧縮強度をクリア
しており、Ａ種ブロックとして使用することができる。Lightweight concrete block 25 made from the mixture of ■ to V above
The compressive strength after 4 weeks and after 2 hours of water immersion are both 40 kg/cd or more,
It clears the compressive strength of Class A bronc specified in the JIS, and can be used as a Class A block.

そして、発明者が前記各材料の配合量を変えて同様の試
験をしたところ、その配合割合として好ましいのは次の
通りである。すなわち、多孔性焼却灰８と、多孔性焼却
灰８に対して２０〜３０重量％のセメント２０と、多孔
性焼却灰８に対して０〜３５重量％の豆砂利２１と、多
孔性焼却灰８に対して０〜４０重量％の砂２２と、適量
の水２３とを十分に混練すればよい。Then, the inventor conducted a similar test by changing the blending amounts of each of the above-mentioned materials, and found that the preferred blending ratios are as follows. That is, porous incinerated ash 8, cement 20 in an amount of 20 to 30% by weight based on the porous incinerated ash 8, pea gravel 21 in an amount of 0 to 35% by weight based on the porous incinerated ash 8, and porous incinerated ash. Sand 22 of 0 to 40% by weight based on sand 8 and an appropriate amount of water 23 may be sufficiently kneaded.

ここで、セメント２０の多孔性焼却灰８に対する配合重
量が２０％未満であると所望の強度が得られず、また、
前記重量が３０％を超えるとクランクが生し易くなると
共にコストアップになる。そして、豆砂利２１の多孔性
焼却灰８に対する配合重量が３５％を超えるとそれだけ
重量が大きくなる。また、砂２２の多孔性焼却灰８に対
する配合重量が４０％を超えるとコストアップになる。Here, if the blended weight of the cement 20 with respect to the porous incineration ash 8 is less than 20%, the desired strength cannot be obtained, and
If the weight exceeds 30%, cranking tends to occur and costs increase. When the blended weight of the pea gravel 21 with respect to the porous incineration ash 8 exceeds 35%, the weight increases accordingly. Moreover, if the blending weight of the sand 22 with respect to the porous incineration ash 8 exceeds 40%, the cost will increase.

ところで、前記多孔性焼却灰８は軽量コンクリート製品
においてのみならず、軽量生コンにおける人工軽量骨材
としても使用することができる。By the way, the porous incineration ash 8 can be used not only in lightweight concrete products but also as an artificial lightweight aggregate in lightweight ready-mixed concrete.

すなわち、多孔性焼却灰８と、多孔性焼却灰８に対して
６０〜７０重量％のセメント２０と、多孔性焼却灰８に
対して１５０〜２５０重量％の砂２２と、適量の水とを
十分に混練すればよい。その場合、混和材としてホゾリ
ス７０（商品名）をごく僅か添加してもよい。第１図に
おいて、２６は軽量生コンを示す。That is, porous incinerated ash 8, cement 20 in an amount of 60 to 70% by weight based on the porous incinerated ash 8, sand 22 in an amount of 150 to 250% by weight based on the porous incinerated ash 8, and an appropriate amount of water. Just mix it thoroughly. In that case, a very small amount of Hozolith 70 (trade name) may be added as an admixture. In FIG. 1, 26 indicates lightweight ready-mixed concrete.

ここで、セメント２０の多孔性焼却灰８に対する配合重
量が６０％未満であると所望の強度が得られず、また、
前記重量が７０％を超えるとクランクが生し易くなると
共にコストアップになる。そして、砂２２の多孔性焼却
灰８に対する配合重量が１５０％未満であると、所望の
強度が得られず、また、前記重量が２５０％を趙えると
コストアンプになる。Here, if the blending weight of the cement 20 with respect to the porous incinerated ash 8 is less than 60%, the desired strength cannot be obtained, and
If the weight exceeds 70%, cranking tends to occur and costs increase. If the weight of the sand 22 relative to the porous incineration ash 8 is less than 150%, the desired strength cannot be obtained, and if the weight exceeds 250%, the cost will increase.

上記配合割合の軽量住コン２６も従来の軽量生コンと同
様に使用することができる。The lightweight housing concrete 26 having the above-mentioned mixing ratio can also be used in the same way as conventional lightweight ready-mixed concrete.

なお、本発明は上記実施例に限られるものではなく、例
えば燃焼処理装置工は上記以外の構成のものを使用して
もよい。また、軽量コンクリートブロックや軽量コンク
リート煉瓦などの軽量コン４゜ クリート製品２５は押し出し成形以外の手法によって製
造してもよいことは云うまでもない。It should be noted that the present invention is not limited to the above-mentioned embodiments, and for example, the combustion treatment equipment may have a structure other than that described above. It goes without saying that the lightweight concrete products 25, such as lightweight concrete blocks and lightweight concrete bricks, may be manufactured by methods other than extrusion.

（発明の効果］ 以上説明したように、本発明によれば、人工軽量骨材と
して、製紙汚泥と木材チップとを７５０〜８００℃の温
度で燃焼させて得られる多孔性焼却灰を用いているので
、適宜の軽さで適宜の強度ならびに優れた断熱性、防音
性、防火性を有する軽量コンクリート製品等を安価にし
かも容易に得ることができる。(Effects of the Invention) As explained above, according to the present invention, porous incineration ash obtained by burning papermaking sludge and wood chips at a temperature of 750 to 800°C is used as the artificial lightweight aggregate. Therefore, it is possible to easily obtain lightweight concrete products, etc., which are appropriately light and have appropriate strength, as well as excellent heat insulation, soundproofing, and fireproofing properties, at low cost.

また、本発明によれば、従来、産業廃棄物として厄介も
の扱いされてきた製紙汚泥を有効に利用することができ
るといった利点もあり、国家的見地から極めて大きな効
果を奏する。Further, according to the present invention, there is an advantage that paper manufacturing sludge, which has conventionally been treated as a nuisance as industrial waste, can be effectively used, and it has an extremely large effect from a national standpoint.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明に係る軽量コンクリート製品等の製造工
程を概略的に示す図である。 ８・・・多孔性焼却灰、１５・・・製紙汚泥、１６・・
・木材チップ、２０・・・セメント、２１・・・豆砂利
、２２・・・砂、２３・・・水、２５・・・軽量コンク
リート製品、２６・・・軽量生コンクリート。 東海パルプ株式会社 望月ブロック工業株式会社 大阪合同株式会社 日本植生株式会社FIG. 1 is a diagram schematically showing the manufacturing process of lightweight concrete products, etc. according to the present invention. 8...Porous incineration ash, 15...Paper manufacturing sludge, 16...
- Wood chips, 20... Cement, 21... Pea gravel, 22... Sand, 23... Water, 25... Lightweight concrete products, 26... Lightweight ready-mixed concrete. Tokai Pulp Co., Ltd. Mochizuki Block Industries Co., Ltd. Osaka Godo Co., Ltd. Nippon Vegetation Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] （１）製紙汚泥と木材チップとを７５０〜８００℃の温
度で燃焼させて得られる多孔性焼却灰と、多孔性焼却灰
に対して２０〜３０重量％のセメントと、多孔性焼却灰
に対して０〜３５重量％の豆砂利と、多孔性焼却灰に対
して０〜４０重量％の砂と、適量の水とからなる混練物
を成形した後、養生硬化したことを特徴とする軽量コン
クリート製品。(1) Porous incinerated ash obtained by burning paper sludge and wood chips at a temperature of 750 to 800°C, 20 to 30% by weight of cement to the porous incinerated ash, and Lightweight concrete characterized by forming a mixture of 0 to 35% by weight of pea gravel, 0 to 40% by weight of sand based on porous incineration ash, and an appropriate amount of water, and then curing and hardening the mixture. product. （２）製紙汚泥と木材チップとを７５０〜８００℃の温
度で燃焼させて得られる多孔性焼却灰と、多孔性焼却灰
に対して２０〜３０重量％のセメントと、多孔性焼却灰
に対して０〜３５重量％の豆砂利と、多孔性焼却灰に対
して０〜４０重量％の砂と、適量の水とを混練した後、
この混練物を成形し、その後、養生硬化することを特徴
とする軽量コンクリート製品の製造方法。(2) Porous incinerated ash obtained by burning paper sludge and wood chips at a temperature of 750 to 800°C, 20 to 30% by weight of cement to the porous incinerated ash, and After kneading 0 to 35% by weight of pea gravel, 0 to 40% by weight of sand based on porous incineration ash, and an appropriate amount of water,
A method for producing a lightweight concrete product, which comprises shaping the kneaded material and then curing and hardening it. （３）製紙汚泥と木材チップとを７５０〜８００℃の温
度で燃焼させて得られる多孔性焼却灰と、多孔性焼却灰
に対して６０〜７０重量％のセメントと、多孔性焼却灰
に対して１５０〜２５０重量％の砂と、適量の水とを混
練してなる軽量生コンクリート。(3) Porous incinerated ash obtained by burning paper sludge and wood chips at a temperature of 750 to 800°C, 60 to 70% by weight of cement to the porous incinerated ash, and Lightweight ready-mixed concrete made by kneading 150-250% by weight of sand and an appropriate amount of water. （４）製紙汚泥と木材チップとを７５０〜８００℃の温
度で燃焼させて得られる多孔性焼却灰と、多孔性焼却灰
に対して６０〜７０重量％のセメントと、多孔性焼却灰
に対して１５０〜２５０重量％の砂と、適量の水とを混
練することを特徴とする軽量生コンクリートの製造方法
。(4) Porous incinerated ash obtained by burning paper sludge and wood chips at a temperature of 750 to 800°C, 60 to 70% by weight of cement to the porous incinerated ash, and A method for producing lightweight ready-mixed concrete, which comprises mixing 150 to 250% by weight of sand and an appropriate amount of water.
JP18674990A 1990-07-14 1990-07-14 Lightweight concrete product and its manufacturing method, lightweight green concrete and its manufacturing method Expired - Fee Related JPH0641392B2 (en)

Priority Applications (1)

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JP18674990A JPH0641392B2 (en) 1990-07-14 1990-07-14 Lightweight concrete product and its manufacturing method, lightweight green concrete and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18674990A JPH0641392B2 (en) 1990-07-14 1990-07-14 Lightweight concrete product and its manufacturing method, lightweight green concrete and its manufacturing method

Publications (2)

Publication Number Publication Date
JPH0474775A true JPH0474775A (en) 1992-03-10
JPH0641392B2 JPH0641392B2 (en) 1994-06-01

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ID=16193973

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Country Link
JP (1) JPH0641392B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5613933B1 (en) * 2014-03-13 2014-10-29 株式会社Ｄｉｙ Ｓｔｙｌｅ Method for producing replicas of antique bricks using lightweight concrete
US9404583B2 (en) 2011-03-08 2016-08-02 Federal-Mogul Burscheid Gmbh Slide ring seal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046729A (en) * 1973-01-22 1975-04-25
JPH0264077A (en) * 1987-09-18 1990-03-05 Naito Konosuke Production of formed ceramic article such as light-weight aggregate from industrial waste such as sewage sludge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046729A (en) * 1973-01-22 1975-04-25
JPH0264077A (en) * 1987-09-18 1990-03-05 Naito Konosuke Production of formed ceramic article such as light-weight aggregate from industrial waste such as sewage sludge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9404583B2 (en) 2011-03-08 2016-08-02 Federal-Mogul Burscheid Gmbh Slide ring seal
JP5613933B1 (en) * 2014-03-13 2014-10-29 株式会社Ｄｉｙ Ｓｔｙｌｅ Method for producing replicas of antique bricks using lightweight concrete

Also Published As

Publication number Publication date
JPH0641392B2 (en) 1994-06-01

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