【摘要】 本文研究了C₄AF的形成和水硬性能,证实了 C₄AF是一种胶凝性较好的水泥矿物,以及第四周期过渡金属离子V⁵⁺、Ti⁴⁺、Mn⁴⁺等能显著改善铁相的水硬性能,并从固体物理和结构化学的观点,作了一些讨论和解释。 本研究还制备了一种新型的早强水泥,这种水泥熟料中铁相含量较高,此铁相在发挥水泥强度方面起了重要作用。这种水泥的特点是煅烧温度低;早期强度高;在空气养护或在水中养护均可获得早强;熟料自行粉化后仍具有很高的强度。与此同时还研究了该水泥熟料矿物的形成规律,探讨了熟料矿物组成与水泥物理性能的关系,推导了一组在CaO-SiO₂-Al₂O₃-Fe₂O₃-CaF₂-CaSO₄ 六元体系中配制该熟料率值公式,为今后的工业性试验研究提供了有益的资料。更多还原

【Abstract】 Formation and hydraulic characteristics of C₄AF are studied in the paper,showing thatC₄AF is a cement mineral having good hydraulic properties;and some metallic ions ofthe 4th group of periodic system such as V⁵⁺, Ti⁴⁺ and Mn⁴⁺,can improve the hydrauliccharacteristics of iron phase obviously.For these phenomena, some discussions and explana-tions are made on bases of some concepts of solid physics and structural chemistry. A new type of cement with high early strength has been prepared.Content of ironphase in the clinker of this cement is moderately high,which plays an important role on thedevelopment at the strength of cement.Special properties of this type of cement are:lowclinkering temperature,high early strength when curing in water or air,and still very highstrength of its clinker after dusting.Meanwhile,formation mechanism of clinker of this cementhas been studied and the relation between the physical properties of the cement and theclinker composition has also been discussed. For preparing the clinker containing in the system of CaO-SiO₂-Al₂O₃-Fe₂O₃-CaF₂-CaSO₄,a series of formulae for different moduli have been derived, which will provide useful in-formation for industrial practice in the future.更多还原