JP4413246B2 - Water-retaining concrete block, manufacturing method thereof and pavement structure - Google Patents
Water-retaining concrete block, manufacturing method thereof and pavement structure Download PDFInfo
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- JP4413246B2 JP4413246B2 JP2007121718A JP2007121718A JP4413246B2 JP 4413246 B2 JP4413246 B2 JP 4413246B2 JP 2007121718 A JP2007121718 A JP 2007121718A JP 2007121718 A JP2007121718 A JP 2007121718A JP 4413246 B2 JP4413246 B2 JP 4413246B2
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- 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
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Description
本発明は、歩道、住宅地の車道、駐車場、広場、ビルの屋上等の地面に敷設して舗装され、また、駐車場の車止め、道路の分離帯や分離ブロック等としても使用できる保水性コンクリートブロックとその製造方法に関し、さらに該ブロックを用いた舗装構造に関するものである。 The present invention is paved by laying on the ground such as sidewalks, roadways in residential areas, parking lots, plazas, rooftops of buildings, etc., and can also be used as parking stops, road dividers, separation blocks, etc. The present invention relates to a concrete block and a manufacturing method thereof, and further relates to a pavement structure using the block.
今日、環境問題が社会的関心となっている。環境問題の中には、都市部の気温が周辺部に比べて高くなるヒートアイランド現象や、二酸化炭素等の温室効果ガスの排出により地球全体の気温が上昇する温暖化等がある。 Today, environmental issues have become a social concern. Among environmental problems, there are a heat island phenomenon in which temperatures in urban areas are higher than those in the surrounding areas, and warming in which the temperature of the entire earth rises due to the emission of greenhouse gases such as carbon dioxide.
このうち、ヒートアイランド現象の一因として、都市部においては、大部分の地面がアスファルトやコンクリートで覆われていることにある。アスファルトやコンクリートで覆われている地面は、雨水がほとんど保持されずに流出してしまい、水の気化熱による冷却作用が期待できないからである。 Among them, one of the causes of the heat island phenomenon is that most of the ground is covered with asphalt or concrete in urban areas. This is because the ground covered with asphalt or concrete flows out with almost no rainwater retained, and a cooling action due to the heat of vaporization of water cannot be expected.
そこで、特許文献1記載のように、コンクリートに保水性を持たせるため、植物繊維をセメントに対し、5質量%以上(上限については記載なし)配合したものが提案されている。実施例としては、セメントに対し、綿を8.3〜8.6質量%配合したものが記載されている。
一方、繊維業界においては、製造過程等で生じた羊毛屑や綿屑が大量に廃棄され、焼却処理が行われている。この処理には、多大なコストがかかる上に、これらを焼却することは、動植物等の天然由来の廃棄物であっても、固定されていた炭素を大気中に炭酸ガスとして放出することになる。 On the other hand, in the textile industry, a large amount of wool waste and cotton waste generated in the manufacturing process is discarded and incinerated. This treatment is costly and incinerating them will release the fixed carbon as carbon dioxide into the atmosphere, even for naturally occurring waste such as animals and plants. .
しかし、特許文献1記載の保水性コンクリートでは、綿等の植物繊維の配合量が少ないことから、十分な保水性がない上に、繊維業界において、大量に廃棄・焼却されている綿屑を十分に利用することができない。 However, in the water-retaining concrete described in Patent Document 1, since the blending amount of plant fibers such as cotton is small, there is not enough water retention, and in the textile industry, sufficient amount of cotton scraps discarded and incinerated is sufficient. It cannot be used.
そこで、本発明は、高い保水性により地面の温度を長時間にわたり下げることができ、また大量の羊毛、綿及び大鋸屑の有効な再利用先ともなり炭酸ガスの放出量の削減にも寄与でき、弾力性も備える保水性コンクリートブロックとこの保水性コンクリートブロックを用いた舗装構造を提供することを目的とする。 Therefore, the present invention can reduce the temperature of the ground over a long period of time due to high water retention, can also be an effective reuse destination of a large amount of wool, cotton and large sawdust, and can contribute to the reduction of carbon dioxide emission . An object is to provide a water-retaining concrete block having elasticity and a pavement structure using the water-retaining concrete block .
A.本発明の保水性コンクリートブロック
本発明の保水性コンクリートブロックは、セメント100質量部に対し、砂礫100〜400質量部と、充填材としての、15〜40mmの長さに切断された羊毛糸10〜23質量部、15〜40mmの長さに切断された綿糸5〜12質量部及び大鋸屑10〜20質量部の三種の組合せと、水とを含む均一に混合された攪拌混合物が固化してなり、保水可能な多孔質であるとともに弾力性を備えることを特徴とするものである。
多孔には、保水性コンクリートブロックの製造中(主に攪拌中)に混入した空気による微孔や糸等の充填材間の空隙等が含まれる。
A. Water-retaining concrete block of the present invention The water-retaining concrete block of the present invention is composed of 100 to 400 parts by mass of gravel and 100 to 400 parts by mass of wool and 10 to 10 wool yarn cut to a length of 15 to 40 mm as a filler. Three types of combinations of 23 parts by weight, 15 to 40 parts by weight of cotton yarn cut to a length of 15 to 40 mm, and 10 to 20 parts by weight of large sawdust , and a uniformly mixed stirring mixture containing water are solidified, It is characterized by being porous and capable of retaining water and having elasticity .
The porosity includes voids between fillers such as micropores and yarns due to air mixed during the manufacture of the water-retaining concrete block (mainly during stirring).
B.本発明の保水性コンクリートブロック製造方法
本発明の保水性コンクリートブロック製造方法は、混合機に、セメント100質量部に対し、砂礫100〜400質量部及び水150〜500質量部の混合物に大鋸屑10〜20質量部を入れて攪拌し、均一に混合した後、前記混合機に、15〜40mmの長さに切断された羊毛糸10〜23質量部及び15〜40mmの長さに切断された綿糸5〜12質量部を投入して攪拌し、均一に混合した後、均一に混合された攪拌混合物を固化させることを特徴とする。
B. The water-retaining concrete block manufacturing method of the present invention is a water-retaining concrete block manufacturing method of the present invention, in which a mixer is mixed with 100 to 400 parts by mass of gravel and 150 to 500 parts by weight of water with a large sawdust of 10 to 10 parts by mass. and stirred into 20 parts by weight were uniformly mixed, the mixer, cotton yarn was cut into 10 to 23 parts by weight wool fiber cut to length and the length of 15 to 40 mm of 15 to 40 mm 5 stirring was charged with 12 parts by weight were uniformly mixed, characterized in that solidifying the uniformly mixed mixture stirred.
ここで、セメントと砂礫と大鋸屑と水とを攪拌した後に、羊毛糸及び綿糸を投入して攪拌するという二段階の手順をとるのは、最もこれらが均一に混合しやすい方法だからである。仮に、これら全てを一度に合わせて攪拌すると、充填材(特に糸)の添加量が格段に多いため、長時間かけてもなかなか混合しない。また、一段階目の攪拌の速度は特に高速でなくてもよいが、二段階目の攪拌は高速で行わないと、やはり長時間かけてもなかなか混合しない。そこで、二段階目の攪拌速度については、攪拌する混合機の種類にもよるので一律に数値で示すことは困難であるが、混合機の速度を上げていくと混ざり合いが進み始める速度があるので、かかる速度を本発明では「混ざり合う境界速度」としている。
本発明における各要素の態様を以下に例示する。
Here, the cement, sand gravel, large sawdust and water are stirred, and then the two-step procedure of adding wool yarn and cotton yarn and stirring is the most easily mixed method. If all of these are mixed together and stirred, the amount of filler (especially yarn) added is so large that it does not mix easily over a long period of time. Further, the speed of the first stage of stirring may not be particularly high, but if the second stage of stirring is not performed at high speed, the mixing is not easily performed even for a long time. Therefore, the second stage stirring speed is difficult to show uniformly as it depends on the type of mixer to be stirred, but there is a speed at which mixing begins to progress as the speed of the mixer is increased. Therefore, in the present invention, this speed is referred to as “mixing boundary speed”.
The aspect of each element in the present invention is exemplified below.
1.セメント
セメントとしては、特に限定されないが、普通ポルトランドセメント、早強ポルトランドセメント、高炉セメント等が例示できる。
1. Although it does not specifically limit as a cement cement, A normal Portland cement, an early strong Portland cement, a blast furnace cement etc. can be illustrated.
2.砂礫
砂礫の大きさとしては、特に限定されないが、粒径0.5mm〜10mm程度のものを例示できる。
2. Sand gravel The size of the gravel is not particularly limited, but examples include those having a particle size of about 0.5 mm to 10 mm.
3.充填材(フィラー)
3−1.羊毛糸
羊毛糸を用いるのは、所定の吸水性を備えるとともに、優れた弾力性を備えていて保水性コンクリートブロック中に保水のための空隙を形成しやすいからである。用いる羊毛は新品でもよいが、通常焼却処分されるような羊毛屑を用いると、その焼却処分に要する多大なコストを削減でき、また炭酸ガス放出量を削減できるため、好ましい。また、羊毛は純羊毛に限定されず、主たる羊毛に別繊維が混合したものでもよい。
羊毛糸として15〜40mmの長さに切断されたものを用いるのは、15mm未満であるとセメントスラリー中に均一に混ざり合いにくく、また、強度が低下するからであり、40mmを超えるとセメントスラリー中に均一に混ざり合いにくく、また、攪拌中に混合機の羽根等に巻きつくからである。この切断長さは20〜35mmが好ましく、25〜30mmがより好ましい。
羊毛糸の太さは、特に限定されないが、保水性コンクリートブロックの吸水率が安定することから、2〜7番手が好ましく、3〜5番手がより好ましい。
羊毛糸の色は、特に限定されないが、少なくとも保水性コンクリートブロックの表面部の形成に用いる羊毛糸の色が淡色であると、該表面部の色が淡色になり太陽光の吸熱が減少し、急速な水の蒸発を防いで保水性を長時間維持できる点で好ましい。
3. Filler
3-1. Wool yarn Wool yarn is used because it has a predetermined water absorbency and an excellent elasticity, and easily forms voids for water retention in the water-retaining concrete block. The wool to be used may be new, but it is preferable to use wool waste that is normally incinerated because it can reduce a great cost for the incineration and can reduce the amount of carbon dioxide emission. Further, the wool is not limited to pure wool, and may be one in which another fiber is mixed with the main wool.
The wool yarn cut to a length of 15 to 40 mm is used because if it is less than 15 mm, it is difficult to mix uniformly in the cement slurry, and the strength is reduced. If it exceeds 40 mm, the cement slurry is used. This is because they are difficult to mix evenly and wrap around the blades of the mixer during stirring. This cutting length is preferably 20 to 35 mm, and more preferably 25 to 30 mm.
The thickness of the wool yarn is not particularly limited, but is preferably 2 to 7 and more preferably 3 to 5 because the water absorption rate of the water-retaining concrete block is stable.
The color of the wool yarn is not particularly limited, but if the color of the wool yarn used to form at least the surface portion of the water-retaining concrete block is light, the color of the surface portion becomes light and the endotherm of sunlight decreases, This is preferable in that rapid water evaporation can be prevented and water retention can be maintained for a long time.
3−2.綿糸
綿糸を用いるのは、所定の弾力性を備えるとともに、優れた吸水性を備えていて保水性コンクリートブロックに高い保水性をもたらすからである。用いる綿は新品でもよいが、通常焼却処分されるような綿屑を用いると、上記羊毛糸と同じ理由で好ましい。また、綿は純綿に限定されず、主たる綿に別繊維が加わったものでもよい。
綿糸として15〜40mmの長さに切断されたものを用いるのは、上記羊毛糸と同じ理由である。この切断長さは20〜35mmが好ましく、25〜30mmがより好ましい。
綿糸の太さは、特に限定されないが、上記羊毛糸と同じ理由で、2〜7番手が好ましく、3〜5番手がより好ましい。
綿糸の色は、特に限定されないが、上記羊毛糸と同じ理由で、少なくとも保水性コンクリートブロックの表面部の形成に用いる綿糸の色が淡色であると好ましい。
3-2. Cotton yarn Cotton yarn is used because it has a predetermined elasticity and also has an excellent water absorption property, which brings high water retention to the water retaining concrete block. The cotton to be used may be new, but it is preferable to use cotton dust that is normally incinerated for the same reason as the wool yarn. Further, the cotton is not limited to pure cotton, and may be one in which another fiber is added to the main cotton.
The reason for using cotton yarn cut to a length of 15 to 40 mm is the same reason as the wool yarn. This cutting length is preferably 20 to 35 mm, and more preferably 25 to 30 mm.
The thickness of the cotton yarn is not particularly limited, but for the same reason as the wool yarn, 2-7th is preferable, and 3-5 is more preferable.
The color of the cotton yarn is not particularly limited, but for the same reason as the wool yarn, it is preferable that the color of the cotton yarn used for forming the surface portion of the water-retaining concrete block is light.
3−3.大鋸屑
大鋸屑を用いるのは、所定の弾力性を備えるとともに、優れた吸水性を備えていて保水性コンクリートブロックに高い保水性をもたらすからである。大鋸屑の木種類は、特に限定されない。大鋸屑の形状及び大きさは、特に限定されないが、片長4mmの片状よりも小さい片状、粉粒状等が好ましい。
3-3. Large sawdust The reason why large sawdust is used is that it has a predetermined elasticity and also has an excellent water absorption property, which brings high water retention to the water retaining concrete block. The kind of large sawdust tree is not particularly limited. The shape and size of the large sawdust are not particularly limited, but are preferably smaller than a piece having a length of 4 mm, a powder or the like.
3−4.好ましい組合せ
上記羊毛糸、綿糸及び大鋸屑を単独で又は組合せて(混合して)コンクリートスラリー中に配合したときの知見として得られた、吸水性及び弾力性の評価を次の表1に示す。同表の7通りについて検討し、吸水性及び弾力性が共に「非常に良い」評価である、羊毛糸と大鋸屑との組合せ、羊毛糸と綿糸と大鋸屑との組合せの2通りが好ましく、さらに吸水性が特に良い綿糸と大鋸屑との組合せも好ましい。本発明は、羊毛糸と綿糸と大鋸屑との組合せである。
3-4. Preferred combinations The following Table 1 shows the evaluation of water absorption and elasticity obtained as a knowledge when the above wool yarn, cotton yarn and sawdust were mixed in a concrete slurry alone or in combination (mixed) . Considering the 7 types in the table, the combination of wool yarn and large sawdust, and the combination of wool yarn, cotton yarn and large sawdust, which are both “very good” in water absorption and elasticity, are preferred. A combination of particularly good cotton yarn and large sawdust is also preferred. The present invention is a combination of wool yarn, cotton yarn and large sawdust.
4.配合量
セメント100質量部に対する砂礫の配合量は100〜400質量部とするが、150〜300質量部が好ましく、150〜250質量部がより好ましい。
セメント100質量部に対する充填材の配合量は20〜55質量部とするが、次の配合量が好ましい。
(1)羊毛糸15〜35質量部と大鋸屑10〜20質量部との組合せ
(2)綿糸15〜35質量部と大鋸屑10〜20質量部との組合せ
(3)羊毛糸及び綿糸を合わせて15〜35質量部と大鋸屑10〜20質量部との組合せ(より好ましい例)
(4)羊毛糸10〜23質量部と綿糸5〜12質量部と大鋸屑10〜20質量部との組合せ(最も好ましい例)、そして、同例が本発明である。
セメント100質量部に対する水の配合量は150〜500質量部とするが、200〜400質量部が好ましく、200〜300質量部がより好ましい。
4). Compounding quantity The compounding quantity of the gravel with respect to 100 mass parts of cement shall be 100-400 mass parts, but 150-300 mass parts is preferable and 150-250 mass parts is more preferable.
Although the compounding quantity of the filler with respect to 100 mass parts of cement shall be 20-55 mass parts, the following compounding quantity is preferable.
(1) Combination of 15 to 35 parts by weight of wool yarn and 10 to 20 parts by weight of large sawdust (2) Combination of 15 to 35 parts by weight of cotton yarn and 10 to 20 parts by weight of large sawdust (3) 15 combinations of woolen yarn and cotton thread -35 parts by mass and large sawdust 10-20 parts by mass (more preferred example)
(4) A combination of 10 to 23 parts by weight of wool yarn, 5 to 12 parts by weight of cotton yarn and 10 to 20 parts by weight of large sawdust (the most preferred example) , and the same example is the present invention.
Although the compounding quantity of water with respect to 100 mass parts of cement shall be 150-500 mass parts, 200-400 mass parts is preferable and 200-300 mass parts is more preferable.
本発明の舗装構造は、通水性を確保しかつ強度を確保するため、セメント1質量部と砂礫5〜20質量部とからなる下地層と、下地層の上に敷設している上記保水性コンクリートブロックとを有するものである。
下地層の厚さとしては、特に限定されないが、20〜50mmであることが好ましい。
20mm未満では、下地層の平滑度及び舗装構造としての強度を確保することが難しくなり、50mmを超えると通水性が悪化するためである。
また、保水性コンクリートブロックに注水できるよう、注水用の管を下地層に設備していることが好ましい。
さらに、注水に雨水を使用できるよう、雨水を溜めておく貯水槽を設け、高温時に自動でこの雨水を注水できるような制御装置を有することがより好ましい。
The pavement structure of the present invention has a foundation layer composed of 1 part by mass of cement and 5 to 20 parts by mass of gravel and the above water-retaining concrete laid on the foundation layer in order to ensure water permeability and strength. And a block.
Although it does not specifically limit as thickness of a base layer, It is preferable that it is 20-50 mm.
If it is less than 20 mm, it is difficult to ensure the smoothness of the underlayer and the strength as a pavement structure, and if it exceeds 50 mm, the water permeability deteriorates.
Further, it is preferable that a water injection pipe is provided in the base layer so that water can be injected into the water-retaining concrete block.
Furthermore, it is more preferable to provide a water storage tank for storing rainwater so that rainwater can be used for water injection, and to have a control device that can automatically inject this rainwater at a high temperature.
本発明によれば、高い保水性により地面の温度を長時間にわたり下げることができ、また大量の羊毛、綿及び大鋸屑の有効な再利用先ともなり炭酸ガスの放出量の削減にも寄与でき、弾力性も備えるという優れた効果が得られる。 According to the present invention, the temperature of the ground can be lowered over a long period of time due to high water retention, and it can be an effective reuse destination of a large amount of wool, cotton and large sawdust, and can contribute to the reduction of the amount of carbon dioxide released . An excellent effect of having elasticity is obtained.
セメント100質量部に対し、砂礫150〜250質量部と、15〜40mmの長さに切断された羊毛糸10〜23質量部及び綿糸5〜12質量部と、大鋸屑10〜20質量部と、水200〜300質量部とを含む攪拌混合物が固化してなり、保水可能な多孔質であることを特徴とする保水性コンクリートブロックである。
セメント100質量部に対し、砂礫150〜250質量部及び水200〜300質量部の混合物に大鋸屑10〜20質量部を入れて攪拌した後、15〜40mmの長さに切断された羊毛糸10〜23質量部及び綿糸5〜12質量部を投入し、混ざり合う境界速度以上の速度で攪拌することを特徴とする保水性コンクリートブロックの製造方法である。
150 to 250 parts by weight of gravel, 10 to 23 parts by weight of wool yarn and 5 to 12 parts by weight of cotton thread cut to a length of 15 to 40 mm, 10 to 20 parts by weight of large sawdust, and water for 100 parts by weight of cement The water-retaining concrete block is characterized in that the stirring mixture containing 200 to 300 parts by mass is solidified and is porous so that water can be retained.
10 to 20 parts by weight of large sawdust is stirred into a mixture of 150 to 250 parts by weight of gravel and 200 to 300 parts by weight of water with respect to 100 parts by weight of cement, and then 10 to 10 wool yarn cut to a length of 15 to 40 mm. 23 mass parts and 5-12 mass parts of cotton yarn are thrown in, and it is the manufacturing method of the water-retaining concrete block characterized by stirring at the speed | rate beyond the boundary speed which mixes.
図1に示すように、本実施例の保水性コンクリートブロックは矩形平板状であり、寸法は適宜設定できるが、以下の例では一辺が300mmの正方形で、厚さが80mmである。 As shown in FIG. 1, the water-retaining concrete block of the present embodiment is a rectangular flat plate, and the dimensions can be appropriately set. In the following example, each side is a square having a length of 300 mm and a thickness of 80 mm.
実施例1として、次の配合及び方法により保水性コンクリートブロックを製造した。
(1)先ず、回転羽根式の混合機に、セメント2.18Kg(100質量部)と、砂礫4.37Kg(200質量部)と、大鋸屑0.312Kg(14.3質量部)と、水5.3Kg(243質量部)とを入れて攪拌し、均一に混合する。このときは、特に高速回転でなくてもよく混合する。
(2)その後、同混合物に、共に番手3番であり25mm〜30mmの長さに切断した、羊毛糸0.312Kg(14.3質量部)及び綿糸0.16Kg(7.3質量部)を添加して、高速回転(例えば100回/分(1.7Hz))で攪拌し、均一に混合する。なお、均一に混合した状態で、空気を大量に包含している。
(4)均一に混合された攪拌混合物を、一辺が300mmの正方形の型に厚さが85mmになるように注入し、その後、厚さが80mmになるよう圧縮して、固化させる。
(5)成形された保水性コンクリートブロックを養生し、乾燥させる。
As Example 1, a water-retaining concrete block was produced by the following composition and method.
(1) First, in a rotary blade type mixer, cement 2.18 Kg (100 parts by mass), gravel 4.37 Kg (200 parts by mass), large sawdust 0.312 Kg (14.3 parts by mass), water 5 Add 3 kg (243 parts by mass) and stir to mix uniformly. At this time, the mixing is not necessarily required at high speed.
(2) Thereafter, 0.312 Kg (14.3 parts by mass) of wool yarn and 0.16 Kg (7.3 parts by mass) of wool yarn, both of which were number 3 and cut to a length of 25 mm to 30 mm, were added to the mixture. Add, stir at high speed (eg 100 times / min (1.7 Hz)) and mix evenly. Note that a large amount of air is contained in a uniformly mixed state.
(4) The uniformly mixed stirring mixture is poured into a square mold having a side of 300 mm so as to have a thickness of 85 mm, and then compressed so as to have a thickness of 80 mm and solidified.
(5) The formed water-retaining concrete block is cured and dried.
また、実施例2として、上記実施例1に対し、大鋸屑の添加量を0.25Kg(11.5質量部)に減らし、水の添加量を5.1Kg(234質量部)に減らし、それ以外は実施例1と同様の配合及び方法により保水性コンクリートブロックを製造した。 Moreover, as Example 2, the amount of large sawdust added to Example 1 is reduced to 0.25 kg (11.5 parts by mass), the amount of water added is reduced to 5.1 kg (234 parts by mass), and the rest Produced a water-retaining concrete block by the same composition and method as in Example 1.
さらに、比較例として、セメント2.18Kg(100質量部)と、砂礫4.37Kg(200質量部)と、水約2.1Kg(約50質量部)との攪拌混合物(羊毛糸、綿糸及び大鋸屑が添加されていない)を成形して保水性コンクリートブロックを製造した。 Furthermore, as a comparative example, a stirring mixture (wool yarn, cotton yarn and sawdust) of 2.18 kg (100 parts by mass) cement, 4.37 kg (200 parts by mass) gravel and about 2.1 kg (about 50 parts by mass) water. Was added to produce a water-retaining concrete block.
上記にて作成した実施例1の保水性コンクリートブロックについて次の耐凍害性試験を行うとともに、実施例1,2及び比較例から得た試料について次の吸水性試験を行い、それぞれ評価した。 While performing the following frost resistance test about the water-retaining concrete block of Example 1 created above, the samples obtained from Examples 1 and 2 and the comparative example were subjected to the following water absorption test and evaluated.
[耐凍害性試験]
JIS A 5209 7、12に準じて、試験を行った。
凍結融解及び観察の操作を1回として、これを4回繰り返した。その結果、試料である実施例1の保水性コンクリートブロックにひび割れ及びはがれは認められなかった。
[Frost resistance test]
The test was conducted according to JIS A 5209 7,12.
This operation was repeated four times with one operation of freeze-thawing and observation. As a result, no cracking or peeling was observed in the water-retaining concrete block of Example 1 as a sample.
[吸水率試験(6時間吸水)]
試料が恒量になるまで乾燥した後、試料全体が水没した状態で6時間吸水させた質量を測定した。吸水前後の質量の増加量を吸水前の質量で割って吸水率とした。得られた吸水率は、実施例1で43.9質量%、実施例2で56.9質量%、比較例で24.2質量%であり、実施例1,2の高い吸水性が確認された。
[Water absorption test (6 hours water absorption)]
After the sample was dried until it became a constant weight, the mass that was absorbed for 6 hours in a state where the entire sample was submerged was measured. The increase in mass before and after water absorption was divided by the mass before water absorption to obtain the water absorption rate. The water absorption obtained was 43.9% by mass in Example 1, 56.9% by mass in Example 2, and 24.2% by mass in Comparative Example, confirming the high water absorption of Examples 1 and 2. It was.
図2に示すように、本実施例の舗装構造30は、セメント1質量部と砂礫10質量部とからなり固化した厚さ25mmの下地層20に、貯水槽21(図示略)に溜めておいた雨水を保水性コンクリートブロック10に注水するため、1平米(m2)当り1個の注水孔23を設けた注水管22を設備し、下地層20の上に上記保水性コンクリートブロック10を敷設している。また、温度センサー24(検出器、図示略)により、気温を検出し、高温時、溜めておいた雨水を雨水注入口25から注水管22に注ぎ入れ、保水性コンクリートブロック10に注水する。
As shown in FIG. 2, the
本実施例によれば、(a)〜(d)の効果が得られる。
(a)羊毛糸及び綿糸に、焼却処分される羊毛屑及び綿屑を用いることにより、これらの再活用が図れるとともに、炭酸ガスの放出量の削減にも寄与する。
(b)羊毛糸及び綿糸を含むことにより、これらの毛細現象により多くの水を保水性コンクリートブロック中及びその下の地中に含ませることができる。
(c)高温時、保水性コンクリートブロック等に含まれている多くの水を徐々に蒸発させ、地面の温度を長時間にわたり下げることができる。
(d)番手3番の羊毛糸及び綿糸を用いることにより、吸水率の安定化が図れる。
(e)−20℃でも変化(割れ、はがれ)が生じないことから、冬季の寒さにも耐えることができる。
(f)羊毛糸及び綿糸を含むことにより、従来の歩道に敷設されているブロックと比べ、割れ難くなる。
According to the present embodiment, the effects (a) to (d) can be obtained.
(A) By using wool waste and cotton waste to be incinerated for wool yarn and cotton yarn, they can be reused and contribute to the reduction of carbon dioxide emission.
(B) By including wool yarn and cotton yarn, more water can be contained in the water-retaining concrete block and in the ground below the capillarity.
(C) When the temperature is high, much water contained in the water-retaining concrete block or the like is gradually evaporated, and the temperature of the ground can be lowered for a long time.
(D) By using the wool yarn and cotton yarn of No. 3, the water absorption rate can be stabilized.
(E) Since no change (cracking or peeling) occurs even at −20 ° C., it can withstand cold in winter.
(F) By including wool yarn and cotton yarn, it becomes harder to break than blocks laid on a conventional sidewalk.
本実施例の舗装構造の用途としては、歩道、駐車場、住宅地の車道等が考えられ、本実施例の保水性コンクリートブロックの用途としては、ビル等の建造物の屋上、駐車場等の車止め等が考えられる。 The use of the pavement structure of the present embodiment may be a sidewalk, a parking lot, a roadway in a residential area, etc., and the use of the water-retaining concrete block of the present embodiment is a rooftop of a building such as a building, a parking lot, etc. Car stops can be considered.
なお、本発明は上記実施例に限定されるものではなく、発明の趣旨から逸脱しない範囲で適宜変更して具体化することができる。 In addition, this invention is not limited to the said Example, In the range which does not deviate from the meaning of invention, it can change suitably and can be actualized.
10 保水性コンクリートブロック
20 下地層
30 舗装構造
10 Water-retaining
Claims (5)
前記混合機に、15〜40mmの長さに切断された羊毛糸10〜23質量部及び15〜40mmの長さに切断された綿糸5〜12質量部を投入して攪拌し、均一に混合した後、
均一に混合された攪拌混合物を固化させることを特徴とする保水性コンクリートブロックの製造方法。 To the mixer, after 100 parts by weight cement with respect to stirred into the sawdust 10-20 parts by weight mixture of sand and gravel 100 to 400 parts by mass of water 150 to 500 parts by weight were uniformly mixed,
Wherein the mixer, and stirring was charged wool yarn 10-23 parts by weight of cut to length and 5 to 12 parts by weight cotton yarn is cut to a length of 15 to 40 mm of 15 to 40 mm, were uniformly mixed rear,
A method for producing a water-retaining concrete block, characterized by solidifying a uniformly mixed stirring mixture .
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