【摘要】 将高钛矿渣用于矿物掺合料有利于固体废弃物资源化。通过不同细度、不同种类的高钛矿渣粉作矿物掺合料的试验,研究了高钛矿渣对水化过程的影响、水泥胶砂流动度比的变化规律以及活性指数。结果表明:高钛矿渣粉可以提高水泥砂浆的流动度,其提升幅度随自然冷却高钛矿渣粉细度的增大而增大,随水淬急冷高钛矿渣细度的增大而减小;高钛矿渣早期活性偏低,随着高钛矿渣细度的增大,其后期活性有所提升,自然冷却高钛矿渣的活性略高于水淬急冷高钛矿渣;自然冷却高钛矿渣作为矿物掺合料,将其粉磨至45μm筛筛余<12%时,各龄期的活性均较高,28 d活性指数为78.7%,90 d活性指数为74.5%。更多还原

【Abstract】 With industrial solid waste recycling in China,it has more and more obvious economic and environmental benefits to use high titanium slag as mineral admixture. In this research,the influence of high titanium slag on the hydration process,the changeable rule of fluidity ratio of mortar and the activity index were studied. The results show that high titanium slag powder can improve the fluidity of mortar,and its increasing range increases with the increase of the fineness of high titanium natural cooling slag powder,and decreases with the increase of the fineness of high titanium water quenched slag. With the increase of the fineness of high titanium slag,the compressive strength at 28 days and the later activity of paste are improved,while the activity of natural cooling high titanium slag is slightly higher than that of water quenched slag. As a mineral admixture,the activity of natural cooling high titanium slag is higher in all curing periods when its residue on 45 μm sieve is less than 12%,and the activity index is 78. 7% at 28 days and 74. 5% at 90 days.更多还原