書誌事項
- タイトル別名
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- Influence of Sodium Aliphatic Carboxylic Acids on the Hydration of Cement and Ca<sub>3</sub>SiO<sub>5</sub>
- セメント ト Ca3SiO5 ノ ショキ スイワ ハンノウ ソクド ニ オヨボ
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The influence of sodium aliphatic carboxylic acids, having different hydrophobic chains, on the hydration of alite and portland cement was studied by means of conduction calorimeter (see Fig. 3, Table 3). And the wettabillty of cement with sodium carboxylic acid was discussed by means of the rate of capillary rise (see Fig. 4, 5). Amount of compound adsorbed on cement was determined by Total Organic Carbon analyser (see Table 5).<br>Sodium aliphatic carboxylic acids consisting of long hydrophobic chains slightly retarded the very early stage of hydration (see Fig. 3) but the hydration of alite or the main hydration of cement was less affected as compared with sodium aromatic sulfonate addition (see Table 3).<br>The hydrophilic properties of -COONa and -SO3Na were different each other. -COONa was less hydrophilic than -SO3Na. Sodium aliphatic carboxylic acids having long hydrophobic chains formed insoluble calcium salts. The very early hydration of cement was retarded and the wettability of cement decreased due to the precipitation of these calcium salts on cement particle (see Fig. 5). But as the time proceeded, these precipitates separated out from cement to form scum. Therefore, sodium carboxylic acids having long hydrophobic chains unappreciably retarded t1.<br>Consequently, the balance between hydrophobic and hydrophilic properties plays an important role in the retarding mechanism by organic compounds.
収録刊行物
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- 窯業協會誌
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窯業協會誌 87 (1006), 301-307, 1979
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390001205216273920
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- NII論文ID
- 110002310348
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- NII書誌ID
- AN00245650
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- ISSN
- 18842127
- 00090255
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- NDL書誌ID
- 2056085
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可