高性能无收缩水泥基灌浆料研制.pdfVIP

高性能无收缩水泥基灌浆料的研制 谢琦 冷达 沈中林 （同济大学建筑材料研究所，上海 200092 ） 摘要：水泥基灌浆材料主要应用于地脚螺栓锚固、设备基础及钢结构柱脚底板的二次灌浆、混凝土结构改造、加 固及后张预应力混凝土结构孔道灌浆。随着社会需求的不断增加，国内外对水泥基灌浆材料进行了很多研究，为 ┊ 进一步开发更高性能的灌浆材料提供了研究基础。本文通过对集料和配合比主要参数的优选、优化，配制出高流 ┊ 动度、高强、超高强度、优异工作性、具有微膨胀等性能而成本相对较低的高性能灌浆料。产品符合《水泥基灌 ┊ ┊ 浆材料》（JC/T986—2005 ）标准要求，并从工作性、强度、竖向膨胀率、钢筋握裹强度等方面对该灌浆材料的 ┊ 性能进行了较全面研究。 ┊ 关键词：水泥基灌浆材料；流动度；抗压强度；竖向膨胀率；钢筋握裹强度 ┊ ┊ 中图分类号：TQ172.463 ┊ ┊ Research on High Capability and None Shrinkage Cementitious Grouts ┊ ┊ Xie qi ，Leng da ，Shen zhonglin ┊ (Building Material Institute of Tongji University, Shanghai 200092 ) 装 ┊ Abstract:The cementitious grouts mainly applies to anchor bolt、equipment foundation and quadratic ┊ grouting of steel structure soleplate, reconstruct and consolidate of concrete structures and aperture ┊ ┊ grouting of prestressed concrete and concrete structure.With the continuously increase of social demand, ┊ the development of grouting material are attached more and more importance. Judging by the 订 developing actuality of grouting material, according to the optimize and optimal of such main ┊ ┊ parameter as aggregate and mix proportion, this dissertation confect the high performance grouting ┊ material with high flowability, high strength, ultrahigh strength, better workability, microdilatancy, but ┊ has lower cost. The product meets the standard request of “Cementitious grout” (JC/T986—2005), and ┊ 线 make a comprehensive research on the performance of grouting material from the following aspects: ┊ workability, strength, vertical expansivity,