JP3769911B2 - Method for producing mortar composition - Google Patents
Method for producing mortar composition Download PDFInfo
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- JP3769911B2 JP3769911B2 JP35447397A JP35447397A JP3769911B2 JP 3769911 B2 JP3769911 B2 JP 3769911B2 JP 35447397 A JP35447397 A JP 35447397A JP 35447397 A JP35447397 A JP 35447397A JP 3769911 B2 JP3769911 B2 JP 3769911B2
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- mortar composition
- aggregate
- mortar
- water
- strength
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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
- 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
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- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、軽量であるだけでなく、強度、寸法安定性、吸水性にも優れた硬化体を与えるモルタル組成物に関するものである。本発明のモルタル組成物は、主に建築または土木用途に好適に使用される。
【０００２】
【従来の技術】
従来、モルタルやコンクリートを軽量化するために、多量の気泡を直接導入したり、火山性ガラス質鉱物を焼成・発泡させたパーライト、シラスバルーンまたは頁岩、粘土等を焼成・発泡させた人工軽量骨材、天然軽量骨材、発泡ポリスチレン、スチレンビーズ等の合成樹脂発泡体等、多量の気泡を含む軽量骨材を混入させて、間接的に気泡を導入する方法が採られている。後者の例としては例えば、特開平８−２３９２５１号公報には、火山ガラス質鉱物から製造した人工軽量骨材を細骨材として添加したモルタル、コンクリート組成物が開示されており、また、特開平８−１５７２７８号公報には黒雲母流紋岩から製造した絶乾比重０．５〜１．２の人工軽量骨材を粗骨材または細骨材として添加するコンクリート組成物が開示されている。しかし、これ等の骨材は何れも、資源の枯渇更には環境保全面からの採掘制限等、その供給の不安定性が懸念されている天然物を主原料とするものであるだけでなく、一般に、軽量化と共に硬化体強度が直線的に低下することから、軽量骨材量を増やして軽量化を進めた場合に、十分な強度が発現しない問題が在る。一方、特開平８−２７７１５３号公報には、フライアッシュから製造した人工軽量骨材を粗骨材として使用する技術が開示されているが、用いられている骨材の絶乾比重が１．８〜２．２と大きく、軽量化が十分に達せられない欠点を有したものである。直接的、間接的を問わず、気泡導入によるコンクリート強度の低下は不可避であることから、強度を向上させるために、高性能減水剤を使用して水セメント比を低くしたり、高強度用混和剤としてシリカヒュームまたは硫酸カルシウムを添加して、組成面での改良を加える他、高温高圧養生を行なう等、処理面での改良を加える方法が採られている。高性能減水剤を使用して水セメント比を低くする方法では、ある程度までは強度の向上を図ることが可能であるが、軽量骨材は、骨材自体の強度が低いことに加え、それ自体の吸水量が大きいため、この方法による高強度化には自ずと限界がある。一方、高温高圧養生を施すことは、強度向上のみならず寸法安定性向上の効果も図れるが、コストアップに繋がることが避けられない。
【０００３】
【発明が解決しようとする課題】
本発明は、従来技術が有していた上記問題が解決されたモルタル組成物の提供を目的とする。すなわち、供給不安のない原料を主原料とし、高温高圧養生を施さずとも優れた特性を有するモルタル硬化体を与えるモルタル組成物の提供を目的とする。
【０００４】
【課題を解決するための手段】
本発明では、石炭灰を主原料として製造された、従来の人工軽量骨材よりも気乾単位容積重量及び吸水率が低く、且つ粗表面を有するためマトリックスとの付着力の高い人工軽量骨材を細骨材として混入させたモルタル組成物が、前記課題を解決した硬化体を与えることを見出し、本発明を完成した。
すなわち、本発明は、セメントと、細骨材としての、気乾単位容積質量０．２〜０．６ｋｇ／リットル、吸水率７〜１０％の石炭灰系人工軽量骨材とよりなる主成分に水を加えて成るモルタル組成物に関する。
以下に、本発明を説明する。
【０００５】
【課題を解決するための手段】
本発明では、石炭灰を主原料として製造された、従来の人工軽量骨材よりも気乾単位容積重量及び吸水率が低く、且つ粗表面を有するためマトリックスとの付着力の高い人工軽量骨材を細骨材として混入させたモルタル組成物が、前記課題を解決した硬化体を与えることを見出し、本発明を完成した。すなわち、本発明は、石炭灰、パーライト原石粉砕工程で発生する粉塵を回収した粉末（パーライトコットレルダスト）および炭化珪素を添加・混合したものを造粒、焼成した気乾単位容積質量０.２〜０.６ｋｇ／リットル、吸水率７〜１０％の石炭灰系人工軽量骨材と、セメントと、水を、ミキサーを用いて混練するモルタル組成物の製造方法であって、前記石炭灰系人工軽量骨材の添加量が、モルタル組成物１００容量部当たり２０〜８０容量部となるように調製することを特徴とするモルタル組成物の製造方法に関する。以下に、本発明を説明する。
【０００６】
本発明のモルタル組成物は、上記軽量骨材を細骨材としてセメントおよび水と混合して調製されるが、セメントとしては、普通、早強、超早強、中庸熱、耐硫酸塩、低熱の各ポルトランドセメントや、高炉スラグセメント、フライアッシュセメントおよびシリカセメント等の各種混合セメントを用いることができる。
【０００７】
軽量骨材の添加量は、水を除いたモルタル組成物１００容量部当たり２０〜８０容量部、好ましくは３０〜７０容量部とするのが良い。軽量骨材の配合量が２０容量部より少ないとマトリックス部が多くなり、寸法安定性に劣る硬化体が得られることがあり、一方、８０重量部より大であると流動性が低下するため、成形が困難に成る虞が在るからである。
【０００８】
本発明におけるモルタル組成物には、上記したセメント、軽量骨材および水の必須成分に加えて、モルタル製品製造の際に一般的に使用される、高炉スラグ、フライアッシュ、シリカフューム等の各種無機質微粉末混和材料や、ＡＥ減水剤、高性能減水剤、高性能ＡＥ減水剤等の減水剤、ＡＥ剤、膨張剤、凝結速度調節剤等の各種混和剤を必要に応じてその一般的に使われている量を添加することができる。特に、減水剤の添加は、スラリー流動性の改善に繋がるのみならず、水セメント比の低減を可能にし、硬化体の強度向上に非常に好ましい効果をもたらす。
【０００９】
細骨材中における粒径０．３ｍｍ以下の粒分が少ない場合に、スラリー流動性が十分発現せず作業特性が低下することがあるが、この場合には、粒径０．３ｍｍ以下の発泡ポリスチレン、シラスバルーン等の合成樹脂または無機質発泡体や砕石粉等の無機質微粉末を添加したり、公知の起泡剤を添加して気泡を直接導入することにより、流動性を上げ作業特性を向上させると共に材料分離も抑制され、非常に好ましい結果を得ることができる。
起泡剤を使用して発生・存在させる気泡の量は、モルタルスラリー１００容量部当たり３〜５０容量部の範囲内で、モルタルの使用目的によって選ぶことにより、好結果を得ることができる。
【００１０】
また、その成分または組成物に、更に公知の処理を施すことにより、モルタル硬化体の強度他の特性を改善することができる。例えば、表面をアクリル樹脂、フェノール樹脂、エポキシ樹脂でコーティングして吸水率を下げる公知の処理を施した軽量骨材とすることにより、耐火性と強度が更に向上した硬化体を与えるモルタル組成物を得ることが可能であり、また、鋼繊維、ガラス繊維、炭素繊維等の各種繊維を補強材として添加して硬化体の曲げ強度を向上させることも可能である。これ等は何れも、使用目的に合せて適宜採用することができる。
【００１１】
本発明のモルタル組成物は、その液状成分以外の全成分を予め混合して置き使用に際して液状成分および水を加えてスラリー化しても良いし、予め調製した複数成分の混合物に残りの成分および水を加えても、更には、使用に際して個別の各成分および水を加えてスラリー化しても良い。
【００１２】
【実施例】
以下に具体的例を挙げて、本発明を更に詳しく説明する。
（１）軽量骨材
［実施例１〜６］
石炭灰１００重量部、真珠岩系パーライトコットレルダスト４０重量部および炭化珪素１重量部をリボンミキサーで混合した後、更にポリビニールアルコール０．７重量部、水３０重量部を加えて混錬し、孔径１ｍｍの押出し造粒機を用いて造粒した。得られた造粒物を乾燥後、外熱式の回転管状電気炉（内径４２ｍｍ×長さ１０００ｍｍ）を使用し、炉内最高温度１２７５℃、滞留時間４０分の条件で焼成し、発泡体を得た。得られた発泡体を篩で分級し、０．３〜５．０ｍｍのものを骨材とし使用した。なお、使用した骨材はニューＵライトと称す。
［比較例１〜３］
石炭ガス化炉で発生するスラグを焼成・発泡させた市販の軽量骨材Ｕ−ライトを骨材として使用した。
［比較例４、５］
黒曜石を焼成・発泡させた市販の東邦パーライトＴＭを骨材として使用した。
［比較例６〜８］
廃ガラス粉砕した粉末を主原料として、造粒・焼成・発泡させた市販の軽量骨材Ｇ−ライトを骨材として使用した。
［比較例９〜１３］
真珠岩を粉砕・焼成・発泡させた市販の宇部パーライト II 型を骨材として使用した。
以上の使用した軽量骨材を表１に示す。
（２）モルタル組成物の調製
モルタル組成物の調製に当たって使用した原料を表１に示す。先ず、セメントと軽量骨材を表１に示す配合比で配合したものを、ダルトンミキサーを用いて３０秒間空練りした後、混練水を加え更に９０秒間混練混合し、モルタル組成物を得た。
（３）モルタル硬化体の評価
モルタル硬化体の圧縮強度は、モルタル組成物を縦４０ｍｍ×横４０ｍｍ、長さ１６０ｍｍの鋼鉄製の角柱状型枠に入れ、２４時間養生した後、型枠から取り出した硬化体について測定した。また、硬化体の気乾単位容積質量は、型枠から取り出した硬化体を大気中２０℃、相対湿度８０％の条件下で２８日間乾燥させた後、その質量を測定し、測定値を、寸法から分かっている容積で除して求めた。測定結果を表２に示す。
【００１３】
【表１】
【表２】
何れの骨材においても、その含量を増やせば、モルタル硬化体の単位容積質量は小さくなり圧壊強度は低下するが、気乾単位容積質量が同じ値であれば、本発明のモルタル組成物が、高い圧壊強度のモルタル硬化体を与えることが分かる。また、図１は、各種軽量骨材を使用し各スラリー流動性がほヾ同一になるように調製したモルタル組成物から得られたモルタル硬化体の気乾単位容積質量と圧縮強度との関係を示したものであるが、ニューＵライト［商品名；宇部興産
（株）製］を細骨材として使用する本発明のモルタル組成物が、同一気乾単位容積質量では、従来の細骨材を使用したモルタル組成物より高い圧縮強度のモルタル硬化体を与えることが再度確認される。
【００１６】
【発明の効果】
気乾単位容積質量０．２〜０．６ｋｇ／リットル、吸水率７〜１０％の石炭灰系人工軽量骨材を細骨材として含む本発明のモルタル組成物は、気乾単位容積質量が同じ値であれば、従来のモルタル組成物に比して高い圧縮強度を有するモルタル硬化体を与える。
従って、本発明のモルタル組成物は、選択できる使用場面が拡がり、建築ないしは土木分野におけるその利用価値は大である。
【図面の簡単な説明】
【図１】硬化体の気乾単位容積質量と圧縮強度との関係を示す図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mortar composition that provides a cured product that is not only lightweight but also excellent in strength, dimensional stability, and water absorption. The mortar composition of the present invention is suitably used mainly for construction or civil engineering applications.
[0002]
[Prior art]
Conventionally, artificial light bone made by directly introducing a large amount of air bubbles or firing and foaming volcanic glassy minerals, such as perlite, shirasu balloon or shale, clay, etc., to reduce the weight of mortar and concrete. A method of introducing bubbles indirectly by mixing lightweight aggregates containing a large amount of bubbles, such as wood, natural lightweight aggregates, synthetic resin foams such as expanded polystyrene and styrene beads, has been adopted. Examples of the latter, for example, JP-A-8-239251, mortar added with artificial lightweight aggregate produced from volcanic glassy mineral as fine aggregate, and the concrete composition is disclosed, also JP No. 8-157278 discloses a concrete composition in which an artificial lightweight aggregate having an absolute dry specific gravity of 0.5 to 1.2 manufactured from biotite rhyolite is added as coarse aggregate or fine aggregate. However, these aggregates are not only mainly made from natural products that are concerned about the instability of their supply, such as exhaustion of resources and restrictions on mining from the viewpoint of environmental conservation. In addition, since the strength of the cured body decreases linearly with weight reduction, there is a problem that sufficient strength is not exhibited when weight reduction is promoted by increasing the amount of lightweight aggregate. On the other hand, Japanese Patent Laid-Open No. 8-277153 discloses a technique of using an artificial lightweight aggregate manufactured from fly ash as a coarse aggregate, but the absolute dry specific gravity of the aggregate used is 1.8. It is as large as -2.2, and has the disadvantage that weight reduction cannot be sufficiently achieved. It is inevitable that the strength of the concrete is reduced by introducing air bubbles, whether directly or indirectly, so in order to improve the strength, a high-performance water reducing agent is used to lower the water cement ratio or to add high strength. In addition to improving the composition by adding silica fume or calcium sulfate as an agent, a method of improving the processing surface, such as high-temperature and high-pressure curing, has been adopted. The method of reducing the water-cement ratio using a high-performance water reducing agent can improve the strength to some extent, but in addition to the low strength of the aggregate itself, the lightweight aggregate itself Since there is a large amount of water absorption, there is a limit to increase the strength by this method. On the other hand, applying high-temperature and high-pressure curing can not only improve strength but also improve dimensional stability, but it inevitably leads to an increase in cost.
[0003]
[Problems to be solved by the invention]
An object of this invention is to provide the mortar composition in which the said problem which the prior art had was solved. That is, an object of the present invention is to provide a mortar composition that provides a mortar hardened body having excellent characteristics without using high-temperature and high-pressure curing using a raw material that does not cause supply anxiety.
[0004]
[Means for Solving the Problems]
In the present invention, an artificial lightweight aggregate produced by using coal ash as a main raw material has a low air-dry unit volume weight and a water absorption rate than conventional artificial lightweight aggregates and has a rough surface and thus has high adhesion to the matrix. The present inventors have found that a mortar composition mixed with as a fine aggregate gives a cured product that solves the above-mentioned problems, and has completed the present invention.
That is, the present invention has a main component composed of cement and a coal ash-based artificial lightweight aggregate having an air-dry unit volume mass of 0.2 to 0.6 kg / liter and a water absorption of 7 to 10% as a fine aggregate. The present invention relates to a mortar composition comprising water.
The present invention is described below.
[0005]
[Means for Solving the Problems]
In the present invention, an artificial lightweight aggregate produced by using coal ash as a main raw material has a low air-dry unit volume weight and a water absorption rate than conventional artificial lightweight aggregates and has a rough surface and thus has high adhesion to the matrix. The present inventors have found that a mortar composition mixed with as a fine aggregate gives a cured product that solves the above-mentioned problems, and has completed the present invention. That is, the present invention is an air-dry unit volume mass of 0.2-granulated and baked by adding and mixing coal ash, powder (perlite cotrel dust ) recovered from dust generated in the pearlite roughing step and silicon carbide. A method for producing a mortar composition in which a coal ash-based artificial lightweight aggregate having a water absorption of 7 to 10%, cement, and water are kneaded using a mixer , the coal ash-based artificial lightweight It is related with the manufacturing method of the mortar composition characterized by preparing so that the addition amount of an aggregate may be 20-80 volume parts per 100 volume parts of mortar compositions. The present invention is described below.
[0006]
The mortar composition of the present invention is prepared by mixing the above-mentioned lightweight aggregate with fine aggregate and cement and water. As cement, ordinary, early strength, very early strength, moderate heat, sulfate resistance, low heat And various mixed cements such as blast furnace slag cement, fly ash cement and silica cement can be used.
[0007]
The addition amount of the lightweight aggregate is 20 to 80 parts by volume, preferably 30 to 70 parts by volume per 100 parts by volume of the mortar composition excluding water. When the amount of the lightweight aggregate is less than 20 parts by volume, the matrix part is increased, and a cured body having poor dimensional stability may be obtained. On the other hand, if it is greater than 80 parts by weight, the fluidity is reduced. It is because there exists a possibility that shaping | molding may become difficult.
[0008]
The mortar composition in the present invention includes various inorganic fine particles such as blast furnace slag, fly ash and silica fume which are generally used in the manufacture of mortar products, in addition to the above-mentioned essential components of cement, lightweight aggregate and water. Various admixtures such as powder admixtures, AE water reducing agents, high performance water reducing agents, water reducing agents such as high performance AE water reducing agents, AE agents, swelling agents, and setting speed regulators are generally used as necessary. Can be added. In particular, the addition of a water reducing agent not only leads to an improvement in slurry fluidity, but also enables a reduction in the water-cement ratio, resulting in a very favorable effect for improving the strength of the cured product.
[0009]
When there are few particles having a particle size of 0.3 mm or less in the fine aggregate, the slurry fluidity may not be sufficiently developed and the working characteristics may be deteriorated. In this case, foaming with a particle size of 0.3 mm or less By adding synthetic resin such as polystyrene and shirasu balloon or inorganic fine powder such as inorganic foam and crushed stone powder, or adding a known foaming agent and introducing bubbles directly, fluidity is increased and work characteristics are improved. In addition, material separation is suppressed and very favorable results can be obtained.
Good results can be obtained by selecting the amount of bubbles generated and present using the foaming agent in the range of 3 to 50 parts by volume per 100 parts by volume of the mortar slurry depending on the purpose of use of the mortar.
[0010]
Moreover, the strength and other characteristics of the mortar cured body can be improved by further subjecting the component or composition to a known treatment. For example, a mortar composition that gives a cured body with further improved fire resistance and strength by coating the surface with an acrylic resin, phenol resin, or epoxy resin to give a known lightweight aggregate that has been subjected to a known treatment that reduces water absorption. It is also possible to improve the bending strength of the cured body by adding various fibers such as steel fibers, glass fibers, and carbon fibers as reinforcing materials. Any of these can be appropriately employed according to the purpose of use.
[0011]
The mortar composition of the present invention may be prepared by mixing all components other than the liquid component in advance and adding the liquid component and water into a slurry for use, or the remaining component and water in a mixture of a plurality of components prepared in advance. In addition, in use, individual components and water may be added to form a slurry.
[0012]
【Example】
Hereinafter, the present invention will be described in more detail with specific examples.
(1) Lightweight aggregate
[Examples 1 to 6]
After mixing 100 parts by weight of coal ash, 40 parts by weight of pearlite pearlite cotrel dust and 1 part by weight of silicon carbide with a ribbon mixer, 0.7 parts by weight of polyvinyl alcohol and 30 parts by weight of water were further added and kneaded. Granulation was performed using an extrusion granulator having a pore diameter of 1 mm. After drying the obtained granulated material, using an externally heated rotary tubular electric furnace (inner diameter 42 mm × length 1000 mm), firing at a maximum temperature in the furnace of 1275 ° C. and a residence time of 40 minutes, Obtained. The obtained foam was classified with a sieve, and 0.3 to 5.0 mm was used as an aggregate. The aggregate used is called New U Light.
[Comparative Examples 1-3]
A commercially available lightweight aggregate U-lite obtained by firing and foaming slag generated in a coal gasification furnace was used as the aggregate.
[Comparative Examples 4 and 5]
A commercial Toho Perlite TM made from obsidian fired and foamed was used as an aggregate.
[Comparative Examples 6-8]
The light weight aggregate G-lite, which was granulated, fired and foamed, was used as the aggregate, with the waste glass pulverized powder as the main raw material.
[Comparative Examples 9 to 13]
A commercially available Ube perlite type II made from pearlite ground, fired and foamed was used as the aggregate.
The lightweight aggregates used above are shown in Table 1.
(2) Preparation of mortar composition Table 1 shows the raw materials used in preparing the mortar composition. First, a mixture of cement and light-weight aggregate in the mixing ratio shown in Table 1 was kneaded for 30 seconds using a Dalton mixer, and then kneaded water was added and further kneaded and mixed for 90 seconds to obtain a mortar composition.
(3) Evaluation of cured mortar body The compressive strength of the cured mortar body was determined by placing the mortar composition into a steel prismatic formwork having a length of 40 mm x width of 40 mm and a length of 160 mm , curing for 24 hours, and taking out from the formwork. Measurements were made on cured bodies. The air-dried unit volume mass of the cured product was measured by measuring the mass after drying the cured product taken out from the mold for 28 days under the conditions of 20 ° C. and 80% relative humidity. It was obtained by dividing the known volume from the dimensions. The measurement results are shown in Table 2.
[0013]
[Table 1]
[Table 2]
In any aggregate, if the content is increased, the unit volume mass of the mortar hardened body is reduced and the crushing strength is reduced, but if the air-dry unit volume mass is the same value, the mortar composition of the present invention, It turns out that the mortar hardening body of high crushing strength is given. FIG. 1 shows the relationship between the air-dry unit volume mass and compressive strength of a cured mortar obtained from a mortar composition prepared using various lightweight aggregates so that the slurry fluidity is almost the same. As shown, the mortar composition of the present invention using New Ulite [trade name; manufactured by Ube Industries, Ltd.] as a fine aggregate has the same fine dry unit volume mass as the conventional fine aggregate. It is again confirmed that a mortar hardened body having a higher compressive strength than the used mortar composition is obtained.
[0016]
【The invention's effect】
The mortar composition of the present invention containing a coal ash-based artificial lightweight aggregate having an air-dry unit volume mass of 0.2 to 0.6 kg / liter and a water absorption rate of 7 to 10% as a fine aggregate has the same air-dry unit volume mass. If it is a value, the mortar hardening body which has high compressive strength compared with the conventional mortar composition will be given.
Accordingly, the mortar composition of the present invention can be used in a wide variety of situations, and its utility value in the field of architecture or civil engineering is great.
[Brief description of the drawings]
FIG. 1 is a diagram showing the relationship between air-dry unit volume mass and compressive strength of a cured product.
Claims (1)
セメントと、水を、ミキサーを用いて混練するモルタル組成物の製造方法であって、
前記石炭灰系人工軽量骨材の添加量が、モルタル組成物１００容量部当たり２０〜８０容量部、Ｗ／Ｃ＝３５〜８２％となるように調製することを特徴とするモルタル組成物の製造方法。Coal ash, dust and recovered powder (perlite Cottrell dust) occurring in perlite ore crushing step and granulating the silicon carbide material obtained by adding and mixing, fired air-dried unit volume mass 0.2～0.6Kg / l, Coal ash-based artificial lightweight aggregate with water absorption of 7-10%,
A method for producing a mortar composition in which cement and water are kneaded using a mixer ,
Production of the amount of coal ash based artificial lightweight aggregate is 20 to 80 parts by volume per 100 parts by volume mortar composition, mortar composition which comprises preparing as a W / C = 35~82% Way .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35447397A JP3769911B2 (en) | 1997-12-24 | 1997-12-24 | Method for producing mortar composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35447397A JP3769911B2 (en) | 1997-12-24 | 1997-12-24 | Method for producing mortar composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11180752A JPH11180752A (en) | 1999-07-06 |
| JP3769911B2 true JP3769911B2 (en) | 2006-04-26 |
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| JP35447397A Expired - Lifetime JP3769911B2 (en) | 1997-12-24 | 1997-12-24 | Method for producing mortar composition |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6241815B1 (en) * | 1999-08-10 | 2001-06-05 | United States Gypsum Company | Gypsum-cement system for construction materials |
| JP5083966B2 (en) * | 2007-12-29 | 2012-11-28 | 太平洋マテリアル株式会社 | High fluidity lightweight mortar composition |
| JP2019048735A (en) * | 2017-09-08 | 2019-03-28 | 太平洋セメント株式会社 | Production method of fine aggregate |
| CN107686365A (en) * | 2017-10-31 | 2018-02-13 | 湖南国盛石墨科技有限公司 | The application of spent FCC catalyst and using spent FCC catalyst as graphene/ceramic material of raw material and preparation method thereof |
| CN107721431A (en) * | 2017-10-31 | 2018-02-23 | 湖南国盛石墨科技有限公司 | The application of spent FCC catalyst and preparation and its application using spent FCC catalyst as graphite/ceramic matric composite of raw material |
| CN113307580B (en) * | 2021-06-25 | 2022-09-27 | 广州市建筑集团混凝土有限公司 | Phosphorus slag foam concrete and preparation method thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61163152A (en) * | 1985-01-14 | 1986-07-23 | 宇部興産株式会社 | Manufacture of artificial lightweight aggregate |
| JPH0611659B2 (en) * | 1986-02-14 | 1994-02-16 | 宇部興産株式会社 | Manufacturing method of low water absorption artificial lightweight aggregate |
| JPH03275134A (en) * | 1990-03-23 | 1991-12-05 | Nippon Jiryoku Senko Kk | Utilization of coal ash |
| JPH04119952A (en) * | 1990-09-11 | 1992-04-21 | Nippon Jiryoku Senko Kk | Production of artificial light aggregate |
| JP4128231B2 (en) * | 1994-11-30 | 2008-07-30 | 太平洋セメント株式会社 | Ultralight concrete composition |
| JP3514535B2 (en) * | 1994-11-30 | 2004-03-31 | 太平洋セメント株式会社 | Manufacturing method of artificial lightweight aggregate |
| JPH08239251A (en) * | 1995-03-03 | 1996-09-17 | Chichibu Onoda Cement Corp | Artificial lightweight fine aggregate and its production and mortar concrete using the same |
| JP3267152B2 (en) * | 1996-04-19 | 2002-03-18 | 宇部興産株式会社 | Manufacturing method of coal ash lightweight aggregate |
| JP3275725B2 (en) * | 1996-09-10 | 2002-04-22 | 宇部興産株式会社 | Manufacturing method of coal ash lightweight aggregate |
| JPH10108542A (en) * | 1996-10-04 | 1998-04-28 | Ube Ind Ltd | Artificial lightweight soil |
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1997
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