CAJ | 학술논문

为了解锂渣对混凝土性能改善的贡献情况,采用锂渣和水泥作为胶凝材料制备混凝土,研究了锂渣对混凝土孔结构参数和活性因子的影响规律。实验结果表明：锂渣掺量小于25%时,混凝土的后期强度都将超过空白混凝土；而掺量大于25%时,其力学性能降低幅度较大。同时,锂渣掺量不超过40%时,孔径均匀性的变化幅度较小,特别在养护龄期较小时尤为突出；随着养护龄期的延长,混凝土孔径得到不同程度的细化。锂渣掺量从0增至60%时,活性因子呈先增大后降低的趋势,但活性因子均大于0,且在锂渣掺量为20%时最大。
위료해리사대혼응토성능개선적공헌정황,채용리사화수니작위효응재료제비혼응토,연구료리사대혼응토공결구삼수화활성인자적영향규률。실험결과표명：리사참량소우25%시,혼응토적후기강도도장초과공백혼응토；이참량대우25%시,기역학성능강저폭도교대。동시,리사참량불초과40%시,공경균균성적변화폭도교소,특별재양호령기교소시우위돌출；수착양호령기적연장,혼응토공경득도불동정도적세화。리사참량종0증지60%시,활성인자정선증대후강저적추세,단활성인자균대우0,차재리사참량위20%시최대。
To understand the contribution of lithium slag to the improvement of concrete performance, we research the influ-ence of lithium slag on the concrete pore structure parameters and the activity factors by using the lithium slag as cementitious ma-terials in concrete preparation. The experiments results show that the later strength of the concrete would be higher than that of a blank concrete when the lithium content is less than 25%;however, the mechanical properties reduced greatly when the lithium content exceeds 25%. When the lithium content is less than 40%, the variation magnitude of pore uniformity is small, especially for shorter curing period;the concrete pore becomes smaller with the extension of the curing age. With the increase of lithium slag content from 0 to 60%, the activity factors increases first and then decreases, and reaches the highest when the lithium slag content is 20%, and which is always greater than 0 .