| 外加剂对含镁铝尖晶石新型铝酸盐水泥结合强度的影响 |
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| 引用本文： | 石金辉,肖国庆.外加剂对含镁铝尖晶石新型铝酸盐水泥结合强度的影响[J].硅酸盐通报,2009,28(1):175-179. |
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| 作者姓名： | 石金辉 肖国庆 |
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| 作者单位： | 西安建筑科技大学材料科学与工程学院,西部建筑科技国家重点实验室(筹)西安,710055 |
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| 基金项目： | 陕西省教育厅产业化资助项目 |
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| 摘 要： | 以轻烧白云石粉和工业氧化铝粉为原料,采用烧结法制备了含镁铝尖晶石的新型铝酸盐水泥.利用X射线衍射(XRD)检测了新型铝酸盐水泥及其水化产物的物相组成,并采用扫描电子显微镜(SEM)观察和分析了其水化产物的形貌.研究了不同外加剂(CaCl2,Na2SO4,Li2CO3)对新型铝酸盐水泥结合高铝矾土浇注料早期强度的影响.结果表明:新型水泥的物相组成为一铝酸钙(CA)、二铝酸钙(CA2)和镁铝尖晶石(MA);水化产物主要以C2AH8为主,提供了水泥的早期强度;所选外加剂早强效果由强到弱为:Li2CO3>CaCl2>Na2SO4.当新型铝酸盐水泥中添加0.01%的Li2CO3时,水泥结合的浇注料早期强度可提高40%左右.而其与萘系减水剂共同作用的效果更为明显.
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| 关 键 词： | 镁铝尖晶石 铝酸盐水泥 外加剂 早期强度 |
Effect of Additives on Bonding Strength of the New Spinel-containing Aluminous Cements |
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| SHI Jin-hui,XIAO Guo-qing.Effect of Additives on Bonding Strength of the New Spinel-containing Aluminous Cements[J].Bulletin of the Chinese Ceramic Society,2009,28(1):175-179. |
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| Authors: | SHI Jin-hui XIAO Guo-qing |
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| Abstract: | In this work,new spinel-containing aluminous cements were synthesized from light-burned dolomite powder and industrial Al2O3 powder by sintering process. The phase constituents of new aluminous cement were analyzed by X-ray diffraction (XRD),and the microstructure of hydrated cement was observed with scanning electron microscopy (SEM). The effects of some additives (CaCl2,Na2SO4,Li2CO3) on strength of the refractory castables were studied. The experiments results showed that the constituent of new cement is... |
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| Keywords: | MA-spinel aluminous cement additive early strength |
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