JP2005179163A - Water-permeable concrete composed of molten slag discharged from general waste incineration and sewer sludge molten slag as main aggregate and method for manufacturing the same - Google Patents

Water-permeable concrete composed of molten slag discharged from general waste incineration and sewer sludge molten slag as main aggregate and method for manufacturing the same Download PDF

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JP2005179163A
JP2005179163A JP2003436630A JP2003436630A JP2005179163A JP 2005179163 A JP2005179163 A JP 2005179163A JP 2003436630 A JP2003436630 A JP 2003436630A JP 2003436630 A JP2003436630 A JP 2003436630A JP 2005179163 A JP2005179163 A JP 2005179163A
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molten slag
water
permeable concrete
aggregate
sewer sludge
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Midori Tazaki
みどり 田崎
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

<P>PROBLEM TO BE SOLVED: To generate a water-permeable concrete pavement material which is composed of the molten slag discharged after causing the combustion of general waste incineration ash again and the sludge molten slag discharged by causing the combustion of sewer sludge as main aggregate and has high water permeability and compressive strength/bending strength. <P>SOLUTION: By the method for manufacturing the water-permeable concrete pavement material using the molten slag and the sewer sludge molten slag as the main aggregate, the concrete of zero slump can be produced by kneading 43.7% molten slag or sewer sludge molten slag, 38.7% No.7 aggregate (crushed stones), 10.6% ordinary portland cement, 0.7% hardener (PTT agent), and 3.3% water with a mortar mixer. As a result, the strong water-permeable concrete pavement material of high numerical values in all of the compressive strength/the bending strength/the water permeability can be produced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

発明の詳細な説明Detailed Description of the Invention

本発明は、従来の透水性コンクリートに骨材として一般廃棄物焼却溶融スラグ及び下水道汚泥溶融スラグを使用した製造方法に関する。  TECHNICAL FIELD The present invention relates to a production method using general waste incineration molten slag and sewer sludge molten slag as an aggregate in conventional water-permeable concrete.

従来の透水性コンクリートは主要骨材を粗骨材(砕石)及び天然の砕石を破砕し粒度調整をした骨材を利用して製造されているが原料の採掘が自然の環境破壊となると同時に高価でコスト高に加えて透水係数及び曲げ強度等も十分でなかった。このような状況の中において特殊硬化材(PTT剤)を使用することにより一般廃棄物焼却から排出される溶融スラグ及び下水道汚泥溶融スラグを主原料とした透水性コンクリートの開発研究に取り組み、透水性及び透水性コンクリートの曲げ強度ともに従来の透水性コンクリート以上の成果を見ることができた。この研究開発により低コストで環境に配慮したリサイクル透水性コンクリート舖装材を作り出すとともに透水性舗装の見直しが急激に進み透水性コンクリートにおける強度面等の諸問題も解決を見ることができるようになった。  Conventional water-permeable concrete is manufactured using coarse aggregate (crushed stone) as the main aggregate and aggregate adjusted by pulverizing natural crushed stone, but the mining of raw materials is natural environmental destruction and is expensive at the same time In addition to the high cost, the permeability coefficient and bending strength were not sufficient. Under such circumstances, the development of permeable concrete using molten slag discharged from municipal waste incineration and sewage sludge molten slag as the main raw material by using a special hardener (PTT agent) is conducted. In addition, the bending strength of the permeable concrete was better than that of the conventional permeable concrete. Through this research and development, low-cost and environmentally friendly recycled water-permeable concrete pavement materials are created, and the review of water-permeable pavement is rapidly progressing so that various problems such as strength in water-permeable concrete can be seen. It was.

発明が解決しようとする課題Problems to be solved by the invention

本発明における透水性コンクリートは骨材に一般家庭から排出される可燃性廃棄物や産業廃棄物の可燃性産業廃棄物を焼却溶融し精製された溶融スラグ及び下水道処理の汚泥を焼却溶融化して得られる及び汚泥溶融スラグを30%以上混入し透水性コンクリートを生成した場合、圧縮強度及び曲げ強度が著しく低下しコンクリート本来の強度が得られないという欠点があった。この欠点を少量のPTT剤を混入することにより溶融スラグの混入率を30%から70%まで混入することが可能となり、尚且つ曲げ強度及び圧縮強度共に大きく変化を見ることができた。このような、結果は自然砕石の掘削等による自然環境の破壊を少しでも軽減できると同時に自然環境にも配慮すると共に循環型リサイクル製品として従来の透水性コンクリート舗装材の技術を飛躍させることが出来た。このような成果を総合して本発明が解決しようとする課題は、一般廃棄物焼却場及び下水道汚泥処理場から排出される溶融スラグの埋設処理等が著しく軽減され自然環境の破壊を食い止めると共に透水性コンクリート舗装材の透水係数及び曲げ強度・圧縮強度の数値を大きく改善できる。また、溶融スラグ及び下水道汚泥スラグを骨材として使用することによりコストを最小限におさえることが出来る製造方法を提供することを目的としている。  The permeable concrete in the present invention is obtained by incinerating and melting refined molten slag and sewage sludge by incineration and melting combustible industrial waste such as combustible waste and industrial waste discharged from general households into aggregate. However, when 30% or more of sludge molten slag is mixed to produce water-permeable concrete, the compressive strength and bending strength are remarkably lowered, and the original strength of the concrete cannot be obtained. By mixing a small amount of the PTT agent, it was possible to mix the molten slag from 30% to 70%. Moreover, both bending strength and compressive strength were greatly changed. As a result, the destruction of the natural environment due to excavation of natural crushed stones can be reduced as much as possible, while at the same time considering the natural environment, and the technology of conventional permeable concrete pavement material can be leap forward as a recycling-type recycled product. It was. The problem that the present invention intends to solve by integrating these results is that the disposal of molten slag discharged from the municipal solid waste incineration plant and the sewerage sludge treatment plant is remarkably reduced and the destruction of the natural environment is prevented and the water permeability is The numerical value of permeability coefficient, bending strength and compressive strength can be greatly improved. Another object of the present invention is to provide a production method capable of minimizing the cost by using molten slag and sewer sludge slag as an aggregate.

課題を解決するための手段Means for solving the problem

上記の目的を達成するために、溶融水砕スラグ及び下水道汚泥溶融スラグを19.6%〜43.7%、砕石7号骨材62%〜38.7%、普通ポルトランドセメント10%〜10.6%、水3.3%、特殊硬化剤(PTT剤)0.5%〜0.7%となるようにモルタルミキサーで混合練りし必要に応じて着色顔料を加え再度混練りしカラー透水性コンクリート舗装材を生成するものである。  In order to achieve the above object, 19.6% to 43.7% of molten granulated slag and sewer sludge molten slag, 62% to 38.7% of crushed stone No. 7 aggregate, 10% to 10% of ordinary Portland cement. Mix and knead with a mortar mixer to 6%, 3.3% water, and 0.5% to 0.7% special curing agent (PTT agent), add color pigments as needed, and knead again to make color water permeability It produces concrete paving material.

原料混合物に特殊硬化剤(PTT剤)を加えるのは早強性、エフロ防止の効果と有毒物質等の消去に特に効果がある。混入料は0.3%〜0.7%が最適である。(請求項 2の発明)  The addition of a special curing agent (PTT agent) to the raw material mixture is particularly effective in early strength, the effect of preventing ephra and erasing toxic substances. The mixing charge is optimally 0.3% to 0.7%. (Invention of Claim 2)

溶融水砕スラグ及び下水道汚泥スラグを使用する目的は、一般廃棄物、産業廃棄物など可燃性廃棄物を焼却溶融し精製された溶融水砕スラグ及び下水道の処理施設において発生する下水道汚泥を溶融スラグ化された各種溶融スラグを使用するので原料コストが低くできること、自然環境破壊の防止、資源再利用、省資源面できわめて有利である。しかも溶融水砕スラグ及び下水道汚泥スラグは溶融化され冷却水で急激に破砕されるため粒度が0.2〜12mmと一定化し振るいによる粒度調整が不要となり粒度調整のコストが必要としないとともに破砕されたときにガラス粉状となり自然石7号骨材、セメントと混合すると透水機能を損なうことなく、また、曲げ強度及び圧縮強度も増大する。  The purpose of using molten granulated slag and sewage sludge slag is to melt combustible waste such as general waste and industrial waste by incineration and melting, and refined molten granulated slag and sewage sludge generated at sewerage treatment facilities. The use of various types of molten slag makes it possible to reduce raw material costs, to prevent destruction of the natural environment, to reuse resources, and to save resources. In addition, the molten granulated slag and sewer sludge slag are melted and rapidly crushed with cooling water, so that the particle size is fixed to 0.2 to 12 mm and no particle size adjustment is required by shaking, and the particle size adjustment cost is not required and the material is crushed. When mixed with natural stone No. 7 aggregate and cement, the water permeability function is not impaired, and the bending strength and compressive strength are also increased.

上記要領で混練りした透水性コンクリートで供試体(100×200mm)3個を成型後14日自然養生しコンクリート圧縮強度試験方法および「インターロッキングブロック舗装設計施工要領(平成12年7月)9.2.4インターロッキングブロックの透水性能試験方法(JASS 7 M101)」等により各種試験をした結果
曲げ強度 4.5N/mm (試供体 3本平均)
圧縮強度 23.8N/mm (試供体 3本平均)
透水係数 3.5×10−cm (試供体 3本平均)
The three specimens (100 × 200 mm) were kneaded with the permeable concrete kneaded in the above manner and then naturally cured for 14 days, followed by the concrete compressive strength test method and “Interlocking Block Pavement Design and Construction Procedure (July 2000) 9. As a result of various tests by “2.4 Interlocking block water permeability test method (JASS 7 M101)” and the like, bending strength is 4.5 N / mm 2 (3 specimens average)
Compressive strength 23.8 N / mm 2 (sample 3 average)
Permeability 3.5 × 10- 2 cm (this trial body 3 Mean)

発明の効果The invention's effect

以上説明したとおり本発明にあたっては、溶融水砕スラグ及び下水道汚泥溶融スラグ舗装材料の骨材として使用することによりを一般の骨材よりもはるかに低コストであるために製品全体のコストを削減できるとともに製造過程でのコスト削減も下記の理由により大きなものがあります。溶融水砕スラグ及び下水道汚泥溶融スラグは精製されるとき粒子が0.2mmから12mmと一定化しているので製造工程で粒子の選別をすることなく水洗い後、即骨材として使用できる便利があり人件費等のコストを削減できる。  As described above, in the present invention, the cost of the entire product can be reduced because it is much lower cost than general aggregate by using it as aggregate of molten granulated slag and sewer sludge molten slag pavement material. At the same time, the cost reduction in the manufacturing process can be significant due to the following reasons. Molten granulated slag and sewage sludge molten slag have a particle size of 0.2mm to 12mm when refined, so it can be used as an aggregate immediately after washing with water without sorting the particles in the manufacturing process. Costs such as expenses can be reduced.

本発明製品について具体的に説明する。  The product of the present invention will be specifically described.

上記配合の骨材をミキサー等により混練りし0スランプのコンクリートを生成する。
透水性コンクリート舗装面に生成された透水性コンクリートを各厚さになるように均一に敷き均しタンパープレート等により転圧し約4日間自然養生を実施し透水性コンクリート舗装として完成する。
The aggregate of the above composition is kneaded with a mixer or the like to produce zero slump concrete.
The permeable concrete generated on the permeable concrete pavement surface is uniformly spread so as to have each thickness, and is crushed by a tamper plate or the like, and is subjected to natural curing for about 4 days to complete the permeable concrete pavement.

本発明は、一般家庭から排出される可燃性のゴミや産業廃棄物から取り出される可燃性のゴミを焼却溶融化し冷却水により瞬間的に破砕し精製される溶融水砕スラグ及び下水道汚泥溶融スラグを従来の骨材と混合することによって低コストで透水係数及び曲げ強度をさらに向上させた透水性コンクリート舖装材を開発することができた。従来の透水性コンクリート舗装材では透水係数を最優先に製造した場合曲げ強度が低下したり反対に曲げ強度を強く製造したら透水係数が低下するという反比例的な要素があり、曲げ強度、透水係数と両方を完全なものにすることが非常に困難であったが本発明によりこの諸問題を解決し完全な透水性コンクリート舗装材を完成することができた。この発明の効果は計り知れない大きいものがあると期待される。一般歩道部においては、雨天時の歩行を雨水から守り歩行者の安全な歩行に貢献できまた、歩道上の植樹帯に対しても雨天時において自然に水の供給がなされ樹木の立ち枯れ等を防ぐ効果がある。地球温暖化防止についても製品の保水能力と反射熱の削減と大きな期待がもてる。使用用途によっては、今世紀の画期的な環境保全型製品であるといえる。  The present invention relates to molten granulated slag and sewer sludge molten slag that are incinerated and melted and instantaneously crushed and purified by cooling water from combustible garbage discharged from general households and industrial waste. By mixing with conventional aggregates, we were able to develop a permeable concrete outfitting material that further improved the hydraulic conductivity and bending strength at low cost. In conventional permeable concrete pavement materials, there is an inversely proportional element that the bending strength decreases if the permeability coefficient is produced with the highest priority, or if the bending strength is increased, and the permeability coefficient decreases. Although it was very difficult to complete both, it was possible to solve these problems by the present invention and complete a completely permeable concrete pavement material. The effect of this invention is expected to be immense. In general sidewalks, walking in rainy weather can be protected from rainwater and contribute to the safe walking of pedestrians, and water can be supplied naturally to rainforest on the sidewalk to prevent trees from withering. effective. As for the prevention of global warming, there are great expectations for reducing the water retention capacity and reflected heat of products. Depending on the intended use, it can be said that this is a revolutionary environmental conservation product of this century.

Claims (2)

透水性コンクリート骨材に一般廃棄物を焼却溶融して形成される溶融スラグ及び下水道汚泥溶融スラグを255〜1,190kg、7号骨材を700〜1,054kg、普通ポルトランドセメントを200〜290kg、水70〜89kgを混合練りあわせたモルタルを均等に敷き均し振動加圧を加え硬化製造することを特徴とする透水性コンクリートの製造  255-1190 kg of molten slag and sewage sludge melted slag formed by incinerating and melting general waste in permeable concrete aggregate, 700-1,054 kg of No. 7 aggregate, 200-290 kg of ordinary Portland cement, Manufacture of water-permeable concrete characterized in that mortar mixed with 70-89 kg of water is uniformly spread and hardened by applying vibration and pressure. 請求項1の混合練りモルタルに1〜20kgのPPT剤を加えていることを特徴とした透水性コンクリートの製造方法  A method for producing water-permeable concrete, wherein 1 to 20 kg of a PPT agent is added to the mixed kneaded mortar according to claim 1.
JP2003436630A 2003-12-16 2003-12-16 Water-permeable concrete composed of molten slag discharged from general waste incineration and sewer sludge molten slag as main aggregate and method for manufacturing the same Pending JP2005179163A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101134172B1 (en) 2011-12-13 2012-05-04 주식회사 그린바텀 Permeability concrete block composition
WO2016107936A1 (en) * 2014-12-30 2016-07-07 Envirocem, S.L. Mortar or concrete produced with a hydraulic binder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101134172B1 (en) 2011-12-13 2012-05-04 주식회사 그린바텀 Permeability concrete block composition
WO2016107936A1 (en) * 2014-12-30 2016-07-07 Envirocem, S.L. Mortar or concrete produced with a hydraulic binder

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