EPS颗粒混凝土改性现状及其发展趋势研究  

Status and development of EPS granules concretemodification

作　　者：杜立兵 陈华 郝佳宁 邓志云 李子昌[3,4] 朱慧敏 DU Libing;CHEN Hua;HAO Jianing;DENG Zhiyun;LI Zichang;ZHU Huiming(School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China;Sichuan College of Architectural Technology,Deyang 618000,China;Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China;Sichuan Energy Internet Research Institute,Tsinghua University,Chengdu 610213,China)

机构地区：[1]西南石油大学地球科学与技术学院,四川成都610500 [2]四川建筑与职业技术学院,四川德阳618000 [3]清华大学水利系,北京100084 [4]清华四川能源互联网研究院,四川成都610213

出　　处：《混凝土》2024年第5期178-184,共7页Concrete

基　　金：国家自然科学基金青年基金(12102230);德阳市重点研发项目(2022SZ059,2022SZ049);四川建筑职业技术学院科研项目(2022KJ10)。

摘　　要：EPS颗粒混凝土是当前热门的绿色环保轻质建材,EPS颗粒混凝土改性是提高EPS颗粒混凝土强度和研发高性能EPS颗粒混凝土的有效途径。首先,将EPS颗粒混凝土改性方法分为EPS颗粒改性、胶凝材料改性两大类,仔细梳理了已有EPS颗粒混凝土改性工艺和改性效果;其次,基于EPS颗粒改性和胶凝材料改性的综合讨论,提出了能够扬长避短的复合改性方法;最后,整理了当前EPS颗粒混凝土改性方法存在问题,对未来改性方法的发展进行了思考和展望。研究发现,EPS颗粒改性包括化学改性、裹砂改性、造壳改性;胶凝材料改性包括纤维改性、掺合料改性、外加剂改性;将EPS颗粒改性和胶凝材料改性有机结合的复合改性可以有效提高EPS颗粒混凝土性能,但技术复杂,需进一步研究;同时纳米材料改性、EPS陶粒改性、微胶囊改性、新养护工艺是EPS颗粒混凝土改性的未来发展方向,但新技术高昂的成本亟待降本增效研究。综上,可以为高性能EPS颗粒混凝土研发提供参考,具有较高的参考价值。EPS granules concrete is an environmental-friendly and lightweight cement.granules concrete modification techniques can improve the strength and performance of EPS granules concrete.First,it divides the techniques into two categories:EPS granules modifica-tion and cementitious material modification,respectively,and discusses the characteristics,cons and pros of those modification techniques in detail.Second,based on the discussion of those modification techniques,it propose a composite modification method that can take ad-vantage of both EPS granules modification and cementitious material modification.Finally,the shortcoming of the existing techniques are presented,and the future development is advised.The conclusions are as follows.particle modification techniques include chemical modifi-cation,sand coating and shelling coating.Cementitious material modification includes fiber modification,admixture method and additives method.Composite modification can effectively improve the strength,but is complex and needs further research.In the future,nanoparticle modification,EPS ceramic modification,and phase change material are the costly trend of modification techniques,where it is urgent to re-duce costs.It can provide a reference for the development of high-performance EPS granules concrete,which has certain reference value.

关 键 词：EPS颗粒混凝土 EPS颗粒改性 胶凝材料改性 复合改性 

分 类 号：TU528.2[建筑科学—建筑技术科学]