METHOD OF PRODUCING CEMENT-BASED HARDENED BODY
To solve a problem associated with a conventional method of suppressing an alkali aggregate reaction in concrete, i.e., blending a lithium salt in concrete, that the stable supply of lithium is difficult since lithium is a scarce mineral and is very expensive, although the method is effective in sup...
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| creator | NIIMI TATSUO SABAYASHI TAKASHI KATO HIROYOSHI OTA MASAMI |
| description | To solve a problem associated with a conventional method of suppressing an alkali aggregate reaction in concrete, i.e., blending a lithium salt in concrete, that the stable supply of lithium is difficult since lithium is a scarce mineral and is very expensive, although the method is effective in suppressing expansion, and to provide a method of cheaply and easily imparting an effect of suppressing an alkali aggregate reaction to concrete by blending a calcium aluminate mineral in concrete.SOLUTION: By blending a calcium aluminate mineral eluting an Al ion, in concrete, an alkali silicate which has an expansion action and is a reaction product of an ASR, is made non-expandable to suppress its expansion behavior resulting from an alkali aggregate reaction.SELECTED DRAWING: None
【課題】 コンクリートのアルカリ骨材反応を抑制するための既存の方法であるリチウム塩の混合は、膨張抑制効果を有するものの、リチウムが希少鉱物であり非常に高価であるために、安定供給が難しいといった課題があった。本発明は、カルシウムアルミネートの鉱物をコンクリートに混合することで、安価かつ容易にコンクリートにアルカリ骨材反応の抑制効果を付与する方法を提供するものである。【解決手段】 Ａｌイオンを溶出するカルシウムアルミネート鉱物をコンクリートに混合することで、膨張作用を有するＡＳＲの反応生成物であるアルカリケイ酸塩を非膨張性に変質させ、アルカリ骨材反応による膨張挙動を抑制させる。【選択図】 なし |
| format | Patent |
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【課題】 コンクリートのアルカリ骨材反応を抑制するための既存の方法であるリチウム塩の混合は、膨張抑制効果を有するものの、リチウムが希少鉱物であり非常に高価であるために、安定供給が難しいといった課題があった。本発明は、カルシウムアルミネートの鉱物をコンクリートに混合することで、安価かつ容易にコンクリートにアルカリ骨材反応の抑制効果を付与する方法を提供するものである。【解決手段】 Ａｌイオンを溶出するカルシウムアルミネート鉱物をコンクリートに混合することで、膨張作用を有するＡＳＲの反応生成物であるアルカリケイ酸塩を非膨張性に変質させ、アルカリ骨材反応による膨張挙動を抑制させる。【選択図】 なし</description><language>eng ; jpn</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMISTRY ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; CONCRETE ; LIME, MAGNESIA ; METALLURGY ; REFRACTORIES ; SLAG ; TREATMENT OF NATURAL STONE</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210916&DB=EPODOC&CC=JP&NR=2021138561A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210916&DB=EPODOC&CC=JP&NR=2021138561A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NIIMI TATSUO</creatorcontrib><creatorcontrib>SABAYASHI TAKASHI</creatorcontrib><creatorcontrib>KATO HIROYOSHI</creatorcontrib><creatorcontrib>OTA MASAMI</creatorcontrib><title>METHOD OF PRODUCING CEMENT-BASED HARDENED BODY</title><description>To solve a problem associated with a conventional method of suppressing an alkali aggregate reaction in concrete, i.e., blending a lithium salt in concrete, that the stable supply of lithium is difficult since lithium is a scarce mineral and is very expensive, although the method is effective in suppressing expansion, and to provide a method of cheaply and easily imparting an effect of suppressing an alkali aggregate reaction to concrete by blending a calcium aluminate mineral in concrete.SOLUTION: By blending a calcium aluminate mineral eluting an Al ion, in concrete, an alkali silicate which has an expansion action and is a reaction product of an ASR, is made non-expandable to suppress its expansion behavior resulting from an alkali aggregate reaction.SELECTED DRAWING: None
【課題】 コンクリートのアルカリ骨材反応を抑制するための既存の方法であるリチウム塩の混合は、膨張抑制効果を有するものの、リチウムが希少鉱物であり非常に高価であるために、安定供給が難しいといった課題があった。本発明は、カルシウムアルミネートの鉱物をコンクリートに混合することで、安価かつ容易にコンクリートにアルカリ骨材反応の抑制効果を付与する方法を提供するものである。【解決手段】 Ａｌイオンを溶出するカルシウムアルミネート鉱物をコンクリートに混合することで、膨張作用を有するＡＳＲの反応生成物であるアルカリケイ酸塩を非膨張性に変質させ、アルカリ骨材反応による膨張挙動を抑制させる。【選択図】 なし</description><subject>ARTIFICIAL STONE</subject><subject>CEMENTS</subject><subject>CERAMICS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</subject><subject>CONCRETE</subject><subject>LIME, MAGNESIA</subject><subject>METALLURGY</subject><subject>REFRACTORIES</subject><subject>SLAG</subject><subject>TREATMENT OF NATURAL STONE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNDzdQ3x8HdR8HdTCAjydwl19vRzV3B29XX1C9F1cgx2dVHwcAxycfUDMpz8XSJ5GFjTEnOKU3mhNDeDkptriLOHbmpBfnxqcUFicmpeakm8V4CRgZGhobGFqZmhozFRigAJ1SXV</recordid><startdate>20210916</startdate><enddate>20210916</enddate><creator>NIIMI TATSUO</creator><creator>SABAYASHI TAKASHI</creator><creator>KATO HIROYOSHI</creator><creator>OTA MASAMI</creator><scope>EVB</scope></search><sort><creationdate>20210916</creationdate><title>METHOD OF PRODUCING CEMENT-BASED HARDENED BODY</title><author>NIIMI TATSUO ; SABAYASHI TAKASHI ; KATO HIROYOSHI ; OTA MASAMI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2021138561A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2021</creationdate><topic>ARTIFICIAL STONE</topic><topic>CEMENTS</topic><topic>CERAMICS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</topic><topic>CONCRETE</topic><topic>LIME, MAGNESIA</topic><topic>METALLURGY</topic><topic>REFRACTORIES</topic><topic>SLAG</topic><topic>TREATMENT OF NATURAL STONE</topic><toplevel>online_resources</toplevel><creatorcontrib>NIIMI TATSUO</creatorcontrib><creatorcontrib>SABAYASHI TAKASHI</creatorcontrib><creatorcontrib>KATO HIROYOSHI</creatorcontrib><creatorcontrib>OTA MASAMI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NIIMI TATSUO</au><au>SABAYASHI TAKASHI</au><au>KATO HIROYOSHI</au><au>OTA MASAMI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD OF PRODUCING CEMENT-BASED HARDENED BODY</title><date>2021-09-16</date><risdate>2021</risdate><abstract>To solve a problem associated with a conventional method of suppressing an alkali aggregate reaction in concrete, i.e., blending a lithium salt in concrete, that the stable supply of lithium is difficult since lithium is a scarce mineral and is very expensive, although the method is effective in suppressing expansion, and to provide a method of cheaply and easily imparting an effect of suppressing an alkali aggregate reaction to concrete by blending a calcium aluminate mineral in concrete.SOLUTION: By blending a calcium aluminate mineral eluting an Al ion, in concrete, an alkali silicate which has an expansion action and is a reaction product of an ASR, is made non-expandable to suppress its expansion behavior resulting from an alkali aggregate reaction.SELECTED DRAWING: None
【課題】 コンクリートのアルカリ骨材反応を抑制するための既存の方法であるリチウム塩の混合は、膨張抑制効果を有するものの、リチウムが希少鉱物であり非常に高価であるために、安定供給が難しいといった課題があった。本発明は、カルシウムアルミネートの鉱物をコンクリートに混合することで、安価かつ容易にコンクリートにアルカリ骨材反応の抑制効果を付与する方法を提供するものである。【解決手段】 Ａｌイオンを溶出するカルシウムアルミネート鉱物をコンクリートに混合することで、膨張作用を有するＡＳＲの反応生成物であるアルカリケイ酸塩を非膨張性に変質させ、アルカリ骨材反応による膨張挙動を抑制させる。【選択図】 なし</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE |
| title | METHOD OF PRODUCING CEMENT-BASED HARDENED BODY |
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