【摘要】 为了缓解二氧化碳对环境造成的压力,许多专家学者进行了二氧化碳在水泥基材料中的应用研究,从二氧化碳养护、二氧化碳强化再生骨料、内掺二氧化碳三个方面进行了归纳和总结。得出了二氧化碳养护能缩短混凝土制品的生产周期,提高生产效率,以及改善水泥浆体的孔隙结构;二氧化碳强化再生骨料可以使再生骨料的密实度增大、吸水率减小、压碎值减小等;内掺二氧化碳对水泥水化过程,以及水泥基材料的性能均会产生一定的影响,若应用得当,对凝结时间、水化热、强度等性能有一定的改善作用。综上所述,二氧化碳在水泥基材料中的应用,已经取得了一些较好的成果,但为了更好的发挥其在水泥基材料中的作用,还需进一步加强其对水泥水化过程、以及水泥基材料耐久性等方向的影响研究。更多还原

【Abstract】 In order to alleviate the pressure caused by carbon dioxide on the environment,many experts and scholars have carried out the research on the application of carbon dioxide in cement-based materials.Three aspects of carbon dioxide curing,carbon dioxide reinforce recycled aggregate,and admix carbon dioxide were summarized. It concludes that carbon dioxide curing can shorten the production cycle of concrete products,increases production efficiency and improves the pore structure of cement paste.Carbon dioxide reinforce recycled aggregate can increase the density of recycled aggregate,reduce water absorption and crush; Admix carbon dioxide has some influence on the hydration process of cement and the performance of cement-based materials. If properly applied,it has a certain improvement on the setting time,hydration heat and strength. In summary,the application of carbon dioxide in cement-based materials has achieved some good results,but in order to better play its role in cement-based materials,it is necessary to further strengthen the cement hydration process, and study on the influence of cementitious material durability direction.更多还原