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中文摘要：
为了实现合理利用粉煤灰、镁渣等工业废渣,提高混凝土抗碳化性能,以镁渣掺量、镁渣消解时间和粉煤灰掺量为因素,设计正交试验L9（34）方案及单因素试验方案,试验研究镁渣混凝土的碳化规律。试验表明,镁渣具有增加碱性储备和补偿收缩变形的双重效应,能显著提高C30混凝土的抗碳化性能,碳化深度与镁渣掺量呈幂指数关系,与碳化时间呈双曲线关系。镁渣和粉煤灰都是影响混凝土碳化性能的重要因素,镁渣消解时间的影响很小,是次要因素。就碳化而言,可以取消镁渣消解环节,简化镁渣混凝土的生产工艺。
英文摘要：
In order to realize the reasonable utilization of industrial residue such as fly ash, magnesium slag and so on and enhance the carbonation performance of concrete, taking magnesium slag content, magnesium slag digestion time and fly ash content as factors, the orthogonal test L9（34） and the single factor test scheme were designed to research the carbonization law of magnesium slag concrete. The result shows that： magnesium slag has double effects increasing alkaline reserve and compensating shrinkage deformation, and can significantly improve the carbonation performance of C30concrete; the carbonation depth is the exponential relationship with magnesium slag content, the hyperbolic relationship with carbonization time. Magnesium slag and fly ash are important factors affecting carbonization performance of concrete.The magnesium slag digesting time which is a minor factor has little effect on carbonation. In terms of carbonization, magnesium slag digestion can be cancelled to simplify the production process of magnesium slag concrete.
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