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MITIGATION OF CORROSION IN CARBONATED CONCRETE BASED ON LOW-CALCIUM SILICATE CEMENT
To provide compositions that prevent mitigate or delay the onset of corrosion of iron or steel (e.g., plain carbon steel) components used as reinforcement or otherwise at least partially embedded in carbonated concrete composite materials and objects based on carbonatable calcium silicate cement.SOLUTION: A carbonated composite material is provided, including: a bonding matrix including a plurality of bonding elements; and a plurality of pores including a pore solution having a pH greater than about 9.5, wherein each bonding element includes: a core composed of a carbonatable material; a first silica-rich layer that at least partially covers some peripheral portion of the core; and a second calcium and/or magnesium carbonate-rich layer that at least partially covers some peripheral portion of the first silica-rich layer. The carbonated composite material has a compressive strength of 3,500 psi or greater.SELECTED DRAWING: Figure 11A
【課題】補強材として使用されるか、もしくは他の理由で、少なくとも部分的に中性化コンクリート複合材料および中性化可能ケイ酸カルシウムセメント系製品に埋め込まれた鉄または鋼（例えば、普通炭素鋼）材の腐食の発現を防止、抑制もしくは遅延させる組成物を提供する。【解決手段】複数の結合要素を含む結合マトリックスと；約９．５より大きいｐＨの細孔溶液を含む複数の細孔とを含む中性化複合材料であって、各結合要素が中性化可能材料からなるコアと、前記コアの一部の周辺部を少なくとも部分的に覆う第１シリカリッチ層と、第１シリカリッチ層の一部の周辺部を少なくとも部分的に覆う第２炭酸カルシウムおよび／または炭酸マグネシウムリッチ層とを含み；圧縮強度が３，５００ｐｓｉ以上である、中性化複合材料を提供する。【選択図】図１１Ａ
MITIGATION OF CORROSION IN CARBONATED CONCRETE BASED ON LOW-CALCIUM SILICATE CEMENT
To provide compositions that prevent mitigate or delay the onset of corrosion of iron or steel (e.g., plain carbon steel) components used as reinforcement or otherwise at least partially embedded in carbonated concrete composite materials and objects based on carbonatable calcium silicate cement.SOLUTION: A carbonated composite material is provided, including: a bonding matrix including a plurality of bonding elements; and a plurality of pores including a pore solution having a pH greater than about 9.5, wherein each bonding element includes: a core composed of a carbonatable material; a first silica-rich layer that at least partially covers some peripheral portion of the core; and a second calcium and/or magnesium carbonate-rich layer that at least partially covers some peripheral portion of the first silica-rich layer. The carbonated composite material has a compressive strength of 3,500 psi or greater.SELECTED DRAWING: Figure 11A
【課題】補強材として使用されるか、もしくは他の理由で、少なくとも部分的に中性化コンクリート複合材料および中性化可能ケイ酸カルシウムセメント系製品に埋め込まれた鉄または鋼（例えば、普通炭素鋼）材の腐食の発現を防止、抑制もしくは遅延させる組成物を提供する。【解決手段】複数の結合要素を含む結合マトリックスと；約９．５より大きいｐＨの細孔溶液を含む複数の細孔とを含む中性化複合材料であって、各結合要素が中性化可能材料からなるコアと、前記コアの一部の周辺部を少なくとも部分的に覆う第１シリカリッチ層と、第１シリカリッチ層の一部の周辺部を少なくとも部分的に覆う第２炭酸カルシウムおよび／または炭酸マグネシウムリッチ層とを含み；圧縮強度が３，５００ｐｓｉ以上である、中性化複合材料を提供する。【選択図】図１１Ａ
MITIGATION OF CORROSION IN CARBONATED CONCRETE BASED ON LOW-CALCIUM SILICATE CEMENT
低ケイ酸カルシウムセメント系中性化コンクリート中における腐食の抑制
JITENDRA JAIN (author) / ANUJ SETH (author) / VAHIT ATAKAN (author) / AHMET CUNEYT TAS (author) / SADANADA SAHU (author)
2024-04-10
Patent
Electronic Resource
Japanese
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