| 长石类矿物的热力学稳定条件及对AAR的影响 |
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| 引用本文： | 张庆友.长石类矿物的热力学稳定条件及对AAR的影响[J].河南科技大学学报(自然科学版),2004,25(5):100-104. |
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| 作者姓名： | 张庆友 |
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| 作者单位： | 河南科技大学,第一附属医院,河南,洛阳,471003 |
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| 摘 要： | 应用热力学方法探讨了混凝土集料中钾长石、钠长石、霞石等长石类含碱矿物的热力学稳定条件，并对这些含碱矿物分解析出的碱对AAR(碱-集料反应)的影响进行了讨论。结果表明，长石类矿物的分解反应受温度影响较小，受溶液碱度影响较大；长石类矿物在低碱水泥水化条件下不会分解，在碱含量较高时将分解，并可能导致AAR发生。
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| 关 键 词： | 液碱 钠长石 矿物 分解反应 钾长石 霞石 热力学 AAR 碱-集料反应 碱含量 |
| 文章编号： | 1672-6871(2004)05-0100-05 |
| 修稿时间： | 2004年5月20日 |
Thermodynamics about Feldspathic Mineral Resolution and Effect in Alkali-Aggregate Reaction |
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| ZHANG Qing-You.Thermodynamics about Feldspathic Mineral Resolution and Effect in Alkali-Aggregate Reaction[J].Journal of Henan University of Science & Technology:Natural Science,2004,25(5):100-104. |
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| Authors: | ZHANG Qing-You |
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| Abstract: | The resolution reaction in alkali solution of feldspathic mineral,such as potash feldspar,albite and nepheline,is studied by thermodynamics,and the possibility of alkali released from feldspathic mineral and the effect to AAR are analyzed also.It is indicated that the variety of alkali content in solution influenced the alkali amount released from feldspathic mineral stronger than the variety of curing temperature.It is proved that feldspathic mineral was stable followed the hydration of low-alkali content cement in concrete and no alkali could be released from it,but when using high-alkali content cement in concrete,feldspathic mineral would be decomposed and released alkali from it,which would increase the alkali content in concrete and initiate the alkali-aggregate reaction. |
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| Keywords: | Thermodynamics Alkali Aggregates Feldspar |
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