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应用恒温导热法等研究了道路水泥的水化动力学过程以及CaO、石膏对其水化过程和性能的影响。研究结果表明,与硅酸盐水泥、普通硅酸盐水泥相比,道路水泥由于其特有的矿物组成,尽管早期水化放热速率和水化放热量较低,但早期强度较高,而且具有初凝时间较长,初、终凝时间间隔较短、耐磨、抗干缩等性能,能较好地适应道路建筑工程需要。道路水泥在不同水化阶段具有不同的反应机理,所适用的动力学公式及动力学参数也不同,外掺CaO可使其水化减速期动力学过程得以改变,但掺入少量CaO对道路水泥的性能影响不大。
The hydration kinetics of road cement and the effect of CaO and gypsum on the hydration process and performance of the road cement were studied by the method of constant temperature and heat conduction. The results show that compared with portland cement and portland cement, road cement, due to its unique mineral composition, has high early strength and low hydration heat release rate, The initial setting time is longer, the initial and final setting time shorter, wear-resistant, anti-shrinkage and other properties, can better meet the needs of road construction. Road cement has different reaction mechanism in different hydration stages, and the applicable kinetic formula and kinetic parameters are also different. The addition of CaO can change the kinetics of hydration deceleration phase. However, Little effect on performance.