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首页> 外文期刊>Waste management & research >Strength, leachability and microstructure characterisation of Na_2SiO_3-activated ground granulated blast-furnace slag solidified MSWI fly ash
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Strength, leachability and microstructure characterisation of Na_2SiO_3-activated ground granulated blast-furnace slag solidified MSWI fly ash

机译：Na_2SiO_3活化的粒状高炉矿渣固化MSWI粉煤灰的强度，浸出率和微观结构表征

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It has been shown that it is feasible to solidify MSWI fly ash with a fixed proportion of Na_2SiO_3-activated GGBS (NS). After 28 days of curing, Pb and Cr leaching amount was already low enough to meet the toxicity standard. Additional studies should be carried out to solve the problem of the long-term stability of the solidification matrix.rnWith the presence of alkali, appropriate ratio of GGBS and MSWI fly ash can accelerate hydration which results in a syn-ergistic effect and then promotes the solidification effect. In this investigation, when Na_2SiO_3-activated GGBS (NS) was added to MSWI fly ash at 35% dry weight, the quality of the solidified MSWI fly ash was optimum.rnThe heavy metals were immobilized within the hydration products such as C-S-H gel and ettringite through physical encapsulation, substitution, precipitation or adsorption mechanisms.
机译：已经表明，用固定比例的Na_2SiO_3活化的GGBS（NS）固化MSWI粉煤灰是可行的。固化28天后，铅和铬的浸出量已经足够低，无法满足毒性标准。要解决凝固基质的长期稳定性问题，还需要进行进一步的研究。rn在存在碱的情况下，适当比例的GGBS和MSWI粉煤灰可以促进水合作用，从而产生协同作用，进而促进固化过程。凝固效果。在这项研究中，当将Na_2SiO_3活化的GGBS（NS）以35％的干重添加到MSWI粉煤灰中时，固化的MSWI粉煤灰的质量是最佳的。重金属被固定在水合产物中，例如CSH凝胶和钙矾石通过物理封装，取代，沉淀或吸附机制。

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