JP6146982B2 - Heat shielding material and molded body - Google Patents
Heat shielding material and molded body Download PDFInfo
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- JP6146982B2 JP6146982B2 JP2012229263A JP2012229263A JP6146982B2 JP 6146982 B2 JP6146982 B2 JP 6146982B2 JP 2012229263 A JP2012229263 A JP 2012229263A JP 2012229263 A JP2012229263 A JP 2012229263A JP 6146982 B2 JP6146982 B2 JP 6146982B2
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- 239000000463 material Substances 0.000 title claims description 36
- 239000004568 cement Substances 0.000 claims description 46
- 239000000049 pigment Substances 0.000 claims description 35
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000002344 surface layer Substances 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 239000004579 marble Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000002699 waste material Substances 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 5
- 239000011398 Portland cement Substances 0.000 description 5
- 239000004567 concrete Substances 0.000 description 5
- 241000237509 Patinopecten sp. Species 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 235000020637 scallop Nutrition 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910001610 cryolite Inorganic materials 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004482 other powder Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 241000237502 Ostreidae Species 0.000 description 1
- MZZINWWGSYUHGU-UHFFFAOYSA-J ToTo-1 Chemical compound [I-].[I-].[I-].[I-].C12=CC=CC=C2C(C=C2N(C3=CC=CC=C3S2)C)=CC=[N+]1CCC[N+](C)(C)CCC[N+](C)(C)CCC[N+](C1=CC=CC=C11)=CC=C1C=C1N(C)C2=CC=CC=C2S1 MZZINWWGSYUHGU-UHFFFAOYSA-J 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- -1 etc.) Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Description
本発明は、日光に当たっても蓄熱しにくいセメント組成物からなる遮熱用材料、及び、該遮熱用材料を用いて形成される道路の舗装等の成形体に関する。 The present invention relates to a heat shielding material made of a cement composition that hardly stores heat even when exposed to sunlight, and a molded body such as road pavement formed using the heat shielding material.
道路の舗装やコンクリート建造物等の表面の温度が、夏季の直射日光によって上昇し、ヒートアイランド現象等が生じることが知られている。
従来より、ヒートアイランド現象等の抑制のために、舗装体に種々の材料を配合することが提案されている。
例えば、舗装体の表層部に、可視波長域が吸収を示し赤外線波長域では反射を示す顔料を存在させることによって、太陽熱による路面温度の上昇を効果的に抑制することが提案されている（特許文献１）。
また、舗装体の表層部に、中空微粒子を存在させることによって、太陽熱による路面温度の上昇を効果的に抑制することが提案されている（特許文献２）。
It is known that the temperature of the surface of road pavements, concrete structures, etc. rises due to direct sunlight in the summer, causing a heat island phenomenon or the like.
Conventionally, in order to suppress the heat island phenomenon and the like, it has been proposed to add various materials to the pavement.
For example, it has been proposed to effectively suppress an increase in road surface temperature due to solar heat by causing a pigment in the surface layer portion of a pavement to absorb in the visible wavelength range and to reflect in the infrared wavelength range (patent) Reference 1).
In addition, it has been proposed to effectively suppress an increase in road surface temperature due to solar heat by causing hollow fine particles to be present in the surface layer portion of the pavement (Patent Document 2).
近年、都市部における真夏日や熱帯夜の日数が増える傾向にあり、ヒートアイランド現象等の抑制のための技術の豊富化が求められている。
本発明は、道路の舗装やコンクリート建造物等の材料として用いることのできる、日光に当たっても蓄熱しにくい遮熱用材料、及び、該遮熱用材料を用いて形成される舗装等の成形体を提供することを目的とする。
In recent years, the number of days of midsummer days and tropical nights in urban areas has been increasing, and there is a demand for abundant technologies for suppressing the heat island phenomenon and the like.
The present invention relates to a heat shielding material that can be used as a material for road pavement, concrete structures, and the like, which is difficult to store heat even when exposed to sunlight, and a molded body such as pavement formed using the heat shielding material. The purpose is to provide.
本発明者は、上記課題を解決するために鋭意検討した結果、白色セメント及び複合酸化物系顔料を含むセメント組成物からなる遮熱用材料によれば、道路の舗装やコンクリート建造物等の用途において、日光に当たっても蓄熱しにくく、ヒートアイランド現象等を効果的に抑制しうることを見出し、本発明を完成した。 As a result of diligent studies to solve the above problems, the present inventors have found that, according to the heat shielding material comprising a cement composition containing a white cement and a complex oxide pigment, it can be used for road paving, concrete structures, etc. Thus, the present invention was completed by finding that it is difficult to store heat even when exposed to sunlight, and that the heat island phenomenon and the like can be effectively suppressed.
すなわち、本発明は、以下の［１］〜［５］を提供するものである。
［１］ 白色セメント及び複合酸化物系顔料を含むセメント組成物からなることを特徴とする遮熱用材料。
［２］ 上記セメント組成物が、酸化鉄の含有率が２質量％以下である骨材、及び／又は、複合酸化物系顔料で被覆してなる骨材を含む、上記［１］に記載の遮熱用材料。
［３］ 上記白色の骨材が、石灰石、寒水石、珪砂、貝殻屑、セラミック骨材から選ばれる１種以上を含む、上記［１］又は［２］に記載の遮熱用材料。
［４］ 上記白色セメント１００質量部当たりの上記複合酸化物系顔料の配合量が、０．１〜８質量部である、上記［１］〜［３］のいずれかに記載の遮熱用材料。
［５］ 上記［１］〜［４］のいずれかに記載の遮熱用材料からなる表層部分と、上記遮熱用材料以外の材料からなる基層部分とが積層されてなる成形体。
That is, the present invention provides the following [1] to [5].
[1] A heat shielding material comprising a cement composition containing white cement and a composite oxide pigment.
[2] The cement composition according to [1], wherein the cement composition includes an aggregate having an iron oxide content of 2% by mass or less and / or an aggregate coated with a complex oxide pigment. Heat shielding material.
[3] The heat shielding material according to the above [1] or [2], wherein the white aggregate includes one or more selected from limestone, cryolite, quartz sand, shell scrap, and ceramic aggregate.
[4] The heat shielding material according to any one of [1] to [3], wherein the compounding amount of the complex oxide pigment per 100 parts by mass of the white cement is 0.1 to 8 parts by mass. .
[5] A molded body in which a surface layer portion made of the heat shielding material according to any one of the above [1] to [4] and a base layer portion made of a material other than the heat shielding material are laminated.
本発明の遮熱用材料は、セメント組成物からなるにもかかわらず、セメントの種類を限定しかつ特定の顔料を用いているので、日光に当たっても蓄熱しにくく、ヒートアイランド現象等の抑制のために、道路の舗装やコンクリート建造物等の用途に用いることができる。 Although the heat shielding material of the present invention is composed of a cement composition, the kind of cement is limited and a specific pigment is used, so that it is difficult to store heat even when exposed to sunlight, and the heat island phenomenon is suppressed. It can be used for applications such as road paving and concrete buildings.
本発明の遮熱用材料は、白色セメント及び複合酸化物系顔料を含むセメント組成物からなる。
白色セメントは、白色ポルトランドセメントまたはホワイトセメントとも称されるセメントであり、鉄（Ｆｅ）等の着色の原因となる元素の含有率が、普通ポルトランドセメントに比べて小さいものである。
本発明において、セメント組成物を構成するセメントとして、白色セメントを用いることによって、日光の赤外線を高い反射率で反射させることができ、他のセメント（例えば、普通ポルトランドセメント）を用いる場合には得ることのできない優れた遮熱の効果を得ることができる。
本発明において、白色セメント以外の他のセメントは、少量であれば用いることができる。他のセメントの配合量は、白色セメント１００質量部当たり、好ましくは０〜１０質量部、より好ましくは０〜５質量部、特に好ましくは０〜１質量部である。該量が１０質量部を超えると、遮熱の効果が小さくなる。
The heat shielding material of the present invention comprises a cement composition containing white cement and a complex oxide pigment.
White cement is also called white Portland cement or white cement, and has a lower content of elements that cause coloring, such as iron (Fe), than that of ordinary Portland cement.
In the present invention, by using white cement as the cement constituting the cement composition, infrared rays of sunlight can be reflected with high reflectivity, and obtained when other cement (for example, ordinary Portland cement) is used. An excellent heat shielding effect that cannot be achieved can be obtained.
In the present invention, other cements than white cement can be used in small amounts. The blending amount of the other cement is preferably 0 to 10 parts by mass, more preferably 0 to 5 parts by mass, and particularly preferably 0 to 1 part by mass per 100 parts by mass of the white cement. When the amount exceeds 10 parts by mass, the heat shielding effect is reduced.
複合酸化物系顔料（ＣＩＣＰ；Complex Inorganic Color Pigment）とは、複数の金属酸化物の固溶体からなる無機顔料をいう。
本発明において、顔料として、複合酸化物系顔料を用いることによって、日光の赤外線を高い反射率で反射させることができ、他の顔料（例えば、コンクリートの着色用の通常の顔料）を用いる場合には得ることのできない優れた遮熱の効果を得ることができる。
複合酸化物系顔料の色としては、茶、黒、黄色、橙色等が挙げられる。
複合酸化物系顔料の配合量は、白色セメント１００質量部当たり、好ましくは０．１〜８質量部、より好ましくは０．２〜７質量部、特に好ましくは０．３〜６質量部である。該量が０．１質量部未満では、遮熱の効果を十分に得られないことがある。該量が８質量部を超えると、遮熱の効果が頭打ちまたは低下することがあり、また、当該顔料のコストが増大し、経済上の観点からも好ましくない。
A complex oxide pigment (CICP) refers to an inorganic pigment made of a solid solution of a plurality of metal oxides.
In the present invention, by using a complex oxide pigment as the pigment, infrared rays of sunlight can be reflected with a high reflectance, and when other pigments (for example, ordinary pigments for coloring concrete) are used. It is possible to obtain an excellent heat shielding effect that cannot be obtained.
Examples of the color of the complex oxide pigment include brown, black, yellow, and orange.
The compounding amount of the complex oxide pigment is preferably 0.1 to 8 parts by mass, more preferably 0.2 to 7 parts by mass, and particularly preferably 0.3 to 6 parts by mass per 100 parts by mass of the white cement. . When the amount is less than 0.1 part by mass, the heat shielding effect may not be sufficiently obtained. When the amount exceeds 8 parts by mass, the heat shielding effect may reach its peak or decrease, and the cost of the pigment increases, which is not preferable from an economical viewpoint.
本発明の遮熱用材料を構成するセメント組成物は、（ａ）白色セメント及び複合酸化物系顔料のみからなるプレミックス粉体、（ｂ）白色セメント、複合酸化物系顔料及び骨材のみからなるプレミックス粉粒体、（ｃ）白色セメント、複合酸化物系顔料、骨材、水、及び、必要に応じて配合することのできる任意の他の材料（減水剤等）を含む組成物、等の形態を有することができる。 The cement composition constituting the heat-insulating material of the present invention includes (a) a premix powder consisting of only white cement and a complex oxide pigment, and (b) only a white cement, complex oxide pigment and aggregate. A composition comprising a premix powder, (c) white cement, composite oxide pigment, aggregate, water, and any other material (such as a water reducing agent) that can be blended as necessary, And the like.
本発明において、骨材（例えば、細骨材）としては、酸化鉄の含有率が２質量％以下である骨材（以下、白色系の骨材ともいう。）、及び／又は、複合酸化物系顔料で被覆してなる骨材（以下、「白色系等の骨材」と総称することがある。）が好ましく用いられる。
ここで、白色系の骨材中の酸化鉄の含有率は、遮熱の効果を高める観点から、２重量％以下、好ましくは１．５重量％以下、より好ましくは１重量％以下である。
本発明において、白色系等の骨材を用いることによって、これら以外の骨材（例えば、通常の砂利、砂等）を用いる場合に比べて、遮熱の効果を高めることができる。
白色系の骨材の例としては、石灰石、寒水石、珪砂、貝殻屑（例えば、ホタテ殻屑、牡蠣殻屑等）、セラミック骨材等が挙げられる。
このうち、寒水石とは、茨城県の北部から産する結晶質石灰岩をいう。セラミック骨材とは、陶磁器（例えば、衛生陶器）、碍子、電子部品セラミックス等の生産過程で生じる廃棄物または製品として使用後の廃棄物として回収されたものを粉砕し、粒度を調整して得られたものをいう。
In the present invention, the aggregate (for example, fine aggregate) is an aggregate having an iron oxide content of 2% by mass or less (hereinafter also referred to as white aggregate) and / or a composite oxide. Aggregates coated with a pigment (hereinafter sometimes collectively referred to as “white aggregates”) are preferably used.
Here, the content of iron oxide in the white aggregate is 2% by weight or less, preferably 1.5% by weight or less, more preferably 1% by weight or less from the viewpoint of enhancing the heat shielding effect.
In the present invention, the use of white aggregate or the like can enhance the heat shielding effect as compared with the case of using aggregates other than these (for example, normal gravel, sand, etc.).
Examples of white aggregates include limestone, cryolite, quartz sand, shell waste (eg, scallop shell waste, oyster shell waste, etc.), ceramic aggregate, and the like.
Of these, kansui is crystalline limestone from the northern part of Ibaraki Prefecture. Ceramic aggregate is obtained by adjusting the particle size by pulverizing the waste produced in the production process of ceramics (for example, sanitary ware), insulators, ceramics of electronic parts, etc., or those collected as waste after use as products. It means what was done.
白色系等の骨材が細骨材である場合、該細骨材の配合量は、セメント組成物の硬化体の機械的強度等の観点から、白色セメント１００質量部当たり、好ましくは３００〜５５０質量部、より好ましくは３６０〜５２０質量部、特に好ましくは４２０〜５００質量部である。
複合酸化物系顔料で被覆してなる骨材における複合酸化物系顔料としては、白色セメントと共に用いられる上述の複合酸化物系顔料と同様の顔料を用いることができる。
複合酸化物系顔料で被覆してなる骨材は、例えば、珪砂等の骨材に、焼付け等によって、複合酸化物系顔料を被覆して、着色させることで得ることができる。
When the white aggregate or the like is a fine aggregate, the blending amount of the fine aggregate is preferably 300 to 550 per 100 parts by weight of white cement from the viewpoint of mechanical strength of the hardened body of the cement composition. It is a mass part, More preferably, it is 360-520 mass part, Most preferably, it is 420-500 mass part.
As the composite oxide pigment in the aggregate formed by coating with the composite oxide pigment, the same pigment as the above-described composite oxide pigment used together with the white cement can be used.
The aggregate formed by coating with the complex oxide pigment can be obtained, for example, by coating an aggregate such as silica sand with the complex oxide pigment by baking or the like.
セメント組成物の水セメント比は、セメント組成物の硬化前の流動性（作業性）及び硬化後の機械的強度（例えば、曲げ強度）等の観点から、好ましくは２０〜４５％、より好ましくは２５〜４０％、特に好ましくは２５〜３５％である。
減水剤としては、リグニン系、ナフタレンスルホン酸系、メラミン系、ポリカルボン酸系等の減水剤、ＡＥ減水剤、高性能減水剤、高性能ＡＥ減水剤が挙げられる。
減水剤を用いる場合、その配合量は、減水効果、薬剤コスト等の観点から、白色セメント１００質量部当たり、固形分換算で、好ましくは０．０１〜５質量部である。
The water-cement ratio of the cement composition is preferably 20 to 45%, more preferably from the viewpoints of fluidity (workability) before hardening of the cement composition and mechanical strength (for example, bending strength) after hardening. It is 25 to 40%, particularly preferably 25 to 35%.
Examples of water reducing agents include lignin-based, naphthalenesulfonic acid-based, melamine-based, and polycarboxylic acid-based water reducing agents, AE water reducing agents, high-performance water reducing agents, and high-performance AE water reducing agents.
When using a water reducing agent, the compounding quantity is 0.01-5 mass parts in conversion of solid content per 100 mass parts of white cement from viewpoints of a water reduction effect, chemical | medical agent cost, etc.
本発明において、セメント以外の他の粉体を配合することができる。
他の粉体としては、シリカフューム、炭酸カルシウム等が挙げられる。
他の粉体を用いる場合、その配合量は、当該他の粉体中の酸化鉄の含有率が高い場合に遮熱の効果を低下させないなどの観点から、白色セメント１００質量部当たり、好ましくは２０質量部以下、より好ましくは１０質量部以下、特に好ましくは５質量部以下である。
In the present invention, powders other than cement can be blended.
Examples of other powders include silica fume and calcium carbonate.
When other powder is used, the blending amount is preferably 100 parts by weight of white cement from the viewpoint of not reducing the heat shielding effect when the content of iron oxide in the other powder is high. It is 20 parts by mass or less, more preferably 10 parts by mass or less, and particularly preferably 5 parts by mass or less.
次に、本発明の成形体について説明する。
本発明の成形体は、遮熱用材料からなる表層部分と、上記遮熱用材料以外の材料からなる基層部分とが積層されてなるものである。
遮熱用材料からなる表層部分の表面は、本発明の成形体の敷設後に、通常、日光の当たる面となる。
ここで、日光の当たる面は、（ａ）打ち放しの平滑な面、（ｂ）ショットブラスト仕上げを施した面、（ｃ）洗い出し仕上げを施した面、等のいずれでもよい。
本発明においては、これらのうち、（ａ）（打ち放しの平滑な面）であっても、（ｂ）（ショットブラスト仕上げを施した面）などに比べて、同等以上の遮熱の効果を得ることができる。
本発明の成形体の例としては、道路の舗装、建造物の外壁の表層部分、建造物の屋上の表層部分、建造物の舗装、駐車場の舗装等が挙げられる。なお、本明細書中、「成形体」とは、工場内で予め製造されるプレキャスト品に限定されるものではなく、少なくとも、日光の当たる面が、人為的に意図して形成された表面として形成されていればよい。
Next, the molded product of the present invention will be described.
The molded body of the present invention is formed by laminating a surface layer portion made of a heat shielding material and a base layer portion made of a material other than the heat shielding material.
The surface of the surface layer portion made of the heat-shielding material is usually a surface that is exposed to sunlight after the molding of the present invention is laid.
Here, the surface that is exposed to sunlight may be any of (a) a smooth surface that is exposed to light, (b) a surface that is subjected to shot blasting, (c) a surface that is subjected to washing-out finishing, and the like.
In the present invention, among these, even (a) (a smooth surface to be exposed) has the same or better heat shielding effect than (b) (a surface subjected to shot blasting). be able to.
Examples of the molded article of the present invention include road pavement, surface layer portion of the outer wall of the building, surface layer portion of the roof of the building, pavement of the building, pavement of the parking lot, and the like. In the present specification, the “molded body” is not limited to a precast product manufactured in advance in a factory, and at least a surface that is exposed to sunlight is an artificially formed surface. It only has to be formed.
本発明の成形体は、例えば、遮熱用材料からなる表層部分と、遮熱用材料以外の材料からなる基層部分とが積層されてなるブロックを、複数、組み合わせることによって、構築することができる。このようなブロックは、プレキャスト部材として製造することができる。
この場合、本発明の遮熱用材料からなる表層部分の厚さは、例えば、５〜１００ｍｍである。また、本発明の遮熱用材料以外の材料からなる基層部分の厚さは、例えば、５〜３００ｍｍである。
このブロックの縦及び横の寸法は、例えば、１０〜８０ｃｍ（縦）×５〜５０ｃｍ（横）である。
The molded body of the present invention can be constructed, for example, by combining a plurality of blocks in which a surface layer portion made of a heat shielding material and a base layer portion made of a material other than the heat shielding material are laminated. . Such a block can be manufactured as a precast member.
In this case, the thickness of the surface layer portion made of the heat shielding material of the present invention is, for example, 5 to 100 mm. Moreover, the thickness of the base layer part which consists of materials other than the heat insulation material of this invention is 5-300 mm, for example.
The vertical and horizontal dimensions of this block are, for example, 10 to 80 cm (vertical) × 5 to 50 cm (horizontal).
以下、実施例によって本発明を説明する。以下の文中の「部」、「％」は、特に断らない限り、質量基準である。
［実施例１〜２５、比較例１〜６］
（Ａ）材料
以下の材料を使用した。
（１）白色セメント（太平洋セメント社製）
（２）普通ポルトランドセメント（太平洋セメント社製）；比較用
（３）複合酸化物系顔料（製品名：アサヒピグメント、アサヒ化成工業社製）
（４）顔料（製品名：ランクセス社製）；比較用
（５）寒水石（粒径：１〜４ｍｍ；酸化鉄の含有率：１重量％以下）
（６）珪砂（粒径：１．２〜２．５ｍｍ；酸化鉄の含有率：１重量％以下）
（７）ホタテ殻屑（粒径：０．１〜１０ｍｍ；酸化鉄の含有率：１重量％以下）
（８）牡蠣殻屑（粒径：０．１〜５ｍｍ；酸化鉄の含有率：１重量％以下）
（９）セラミック骨材（碍子の屑；粒径：０．５〜１．２ｍｍ；製品名：エコセルベンＢ粒；ＴＯＴＯ社製；酸化鉄の含有率：１重量％以下）
（１０）アスファルト（厚さ：６０ｍｍ）；比較用
Hereinafter, the present invention will be described by way of examples. “Part” and “%” in the following text are based on mass unless otherwise specified.
[Examples 1 to 25, Comparative Examples 1 to 6]
(A) Material The following materials were used.
(1) White cement (manufactured by Taiheiyo Cement)
(2) Ordinary Portland cement (manufactured by Taiheiyo Cement); for comparison (3) Complex oxide pigment (Product name: Asahi Pigment, Asahi Kasei Kogyo Co., Ltd.)
(4) Pigment (product name: manufactured by LANXESS); for comparison (5) cryolite (particle size: 1 to 4 mm; iron oxide content: 1% by weight or less)
(6) Silica sand (particle size: 1.2-2.5 mm; iron oxide content: 1 wt% or less)
(7) Scallop shell waste (particle size: 0.1 to 10 mm; iron oxide content: 1% by weight or less)
(8) Oyster shell waste (particle size: 0.1 to 5 mm; iron oxide content: 1% by weight or less)
(9) Ceramic aggregate (insulator scraps; particle size: 0.5 to 1.2 mm; product name: Eco-Selben B grain; manufactured by TOTO; iron oxide content: 1% by weight or less)
(10) Asphalt (thickness: 60 mm); for comparison
（Ｂ）試験体であるブロックの作製
１００ｍｍ（縦）×２００ｍｍ（横）×６０ｍｍ（厚さ）のブロックを、表１に示す配合の材料を用いて、作製した。水セメント比は、２８％とした。
表１中、セメントの種類である「白色」、「普通」は、各々、「白色セメント」、「普通ポルトランドセメント」を意味する。顔料の種類である「遮熱」、「通常」は、各々、「複合酸化物系顔料（遮熱効果を有する顔料；製品名：アサヒピグメント）」、「通常の顔料（比較用；製品名：ランクセス社製）」を意味する。骨材の種類である「ホタテ」、「牡蠣」は、各々、「ホタテ殻屑」、「牡蠣殻屑」を意味する。表面仕上げの種類である「ショット」は、「ショットブラスト仕上げ」を意味する。
(B) Production of block as test body A block of 100 mm (length) x 200 mm (width) x 60 mm (thickness) was produced using materials having the composition shown in Table 1. The water cement ratio was 28%.
In Table 1, “white” and “ordinary” which are types of cement mean “white cement” and “ordinary Portland cement”, respectively. “Heat shielding” and “ordinary” which are the types of pigments are respectively “composite oxide pigments (pigments having a heat shielding effect; product name: Asahi Pigment)” and “ordinary pigments (for comparison; product name: LANXESS) ”. The types of aggregate “scallop” and “oyster” mean “scallop shell waste” and “oyster shell waste”, respectively. “Shot”, which is a type of surface finish, means “shot blast finish”.
（Ｃ）試験体であるブロックの表面温度の測定
夏期（７月２６日〜８月２７日）の間に適当に割り振った１２日間の各日について、ブロックの表面温度の最高温度を測定した。この測定値と、同時に測定したアスファルト舗装の表面温度の最高温度との差を算出した。表１中の「温度差（℃）」は、「アスファルト舗装の表面温度の最高温度」−「試験体の表面温度の最高温度」、の１２日間の平均値である。
(C) Measurement of the surface temperature of the test block The maximum surface temperature of the block was measured for each day of 12 days appropriately allocated during the summer (July 26 to August 27). The difference between this measured value and the maximum surface temperature of the asphalt pavement measured at the same time was calculated. “Temperature difference (° C.)” in Table 1 is an average value for 12 days of “maximum temperature of asphalt pavement surface temperature” − “maximum temperature of surface temperature of test specimen”.
以上の結果を表１に示す。
表１から、本発明の遮熱用材料を用いたブロックは、本発明に該当しないブロックに比べて、表面温度の最高温度が低く、ヒートアイランド現象等を効果的に抑制しうることがわかる。
The results are shown in Table 1.
From Table 1, it can be seen that the block using the heat shielding material of the present invention has a lower maximum surface temperature than the block not corresponding to the present invention, and can effectively suppress the heat island phenomenon and the like.
Claims (6)
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| KR101867811B1 (en) * | 2016-04-05 | 2018-06-18 | (주)청원산업 | Heat insulating color sand and Heat insulating block containing the same |
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