矾土水泥混凝土的强度和水泥石的孔级配

• 作 者: 陈金川 张汉文
• 机 构: 建筑材料科学研究院,建筑材料科学研究院,
• 出 处: 混凝土及建筑构件
• 发表日期: 1981年03期
• 关键词: 矾土水泥 水化铝酸一钙 强度 混凝土 后期强度 级配 总孔隙率 亚稳态 铝胶 无定形

矾土水泥最大的缺陷是后期强度下降,在各种使用条件下不能始终保持早期获得的高强度。对于矾土水泥混凝土后期强度下降的问题,国外许多学者作过大量的研究工作。综合其原因,皆认为:在标准条件下矾土水泥的早期水化产物为亚稳态的水化铝酸一钙CAH_(10)和无定形铝胶A1_2O_3.aq,在不同温湿度条件下,它们都趋向于稳定态。CAH_(10)经过亚稳期更

The biggest drawback of alumina cement is its late strength, and it cannot always maintain the high strength obtained early under various conditions of use. For the late strength of alumina cement concrete, many foreign scholars have done a lot of research work. To sum up the reasons, it is believed that the early hydration products of alumina cement under the standard conditions are metastable hydrated calcium aluminate CAH_(10) and amorphous aluminum gel A1_2O_3.aq, under different conditions of temperature and humidity, They tend to be steady. CAH_(10) is more stable through the metastable period