| 摘要 |
<p>Provided is a technique that enables a pozzolan admixture to be universally obtained from a variety of raw materials. The pozzolan admixture is formed from feedstock containing coal gangue. The feedstock contains at least SiO2, Al2O3, CaO and SO3. The SiO2, Al2O3 and CaO form a composition within an area bounded by connecting points J, K, L and M on the triangular coordinates shown in fig. 1A, and the compositional ratio of SO3, in terms of weight, is 1/6 to 1/20 of the total weight of SiO2 + Al2O3 + CaO. After sintering, the pozzolan admixture takes an amorphous form in which the specific surface area is at least 8000 cm2/g.</p> |
