【摘要】 为了将工业废渣锂渣利用起来，提高锂渣的资源利用率，对C25锂渣混凝土的配方进行了设计研究。基于正交试验研究了锂渣掺量(质量分数)、水胶比和砂率3个因素对锂渣混凝土3、7和28 d抗压强度的影响，并通过SEM测试观察锂渣混凝土微观形态，分析锂渣对于锂渣混凝土内部结构的影响机理。结果表明：锂渣掺量对锂渣混凝土3、7和28 d抗压强度影响最大，其次是水胶比，影响最小的为砂率；在考虑抗压强度下，C25锂渣混凝土的最优配合比为10%的锂渣掺量、47%的水胶比和37%的砂率；锂渣在其活性激发后能参与混凝土内部反应，减少混凝土结构内部的裂缝，使得混凝土的致密性得到提高，从而提高混凝土抗压强度。更多还原

【Abstract】 In order to make use of industrial waste lithium slag and improve the resource utilization rate of lithium slag, the formulation of C25 lithium slag concrete was designed and studied. Based on the orthogonal test, the influence of lithium slag dosage(mass fraction), water-binder ratio and sand rate on the 3, 7 and 28 d compressive strength of lithium slag concrete was studied, and microstructure of lithium slag concrete was observed by SEM tests, to analyze the influence mechanism of lithium slag on the internal structure of lithium slag concrete.The results show that the mixing amount of lithium slag has the greatest influence on the 3, 7 and 28 d compressive strength of lithium slag concrete, followed by the water-binder ratio, and finally the sand rate; under the requirement of compressive strength, the optimal mix proportion of C25 lithium slag concrete is 10% lithium slag dosage, 47% water-binder ratio and 37% sand rate; the lithium slag could participate in the internal reaction of concrete after its activity excitation, which could reduce the cracks inside the concrete structure, and make the concrete densification improved, thus enhancing the compressive strength of concrete.更多还原