装配式建筑套筒用灌浆料的配制与性能研究  

Research on the Preparation and Properties of Grouting Materials for Prefabricated Building Sleeves

作　　者：周小华[1] 方金刚[1] ZHOU Xiaohua;FANG Jingang(Guangzhou City Construction College)

机构地区：[1]广州城建职业学院

出　　处：《广东建材》2024年第9期89-93,共5页Guangdong Building Materials

基　　金：广东省教育厅广东省普通高校工程技术研究中心(城市建设绿色建造技术工程技术研究中心)(2019GGCZX005)。

摘　　要：灌浆料直接影响套筒灌浆接头的性能,为制备力学性能好、成本低、绿色环保的套筒用灌浆料,本文在对硅酸盐水泥和硫铝酸盐水泥进行复配的基础上,使用机制砂、粉煤灰、矿粉等材料,以流动性和抗压强度为指标,设计了正交试验。结果表明:水胶比是影响灌浆料流动性和抗压强度的关键因素;套筒灌浆料最优配比为:水胶比0.23、胶砂比1.0:0.8、粉煤灰掺量10%、矿粉掺量4%、机制砂取代量25%,其中胶凝材料中硫铝酸盐水泥的掺量为20%。对灌浆料进行试配:各项性能均优于JG/T 408-2019的性能指标,用于实际工程中,灌浆接头的力学性能符合JGJ 355-2015要求。Grout material directly influences the performance of sleeve grout joint.To prepare sleeve grout material with excellent mechanical properties,low cost and environmental friendliness,based on the combination of Portland cement and sulphate aluminate cement,this paper designed orthogo‐nal tests by using mechanical sand,fly ash,mineral powder and other materials,taking the flow and compressive strength as indicators.The results indicate that the water-binder ratio is the key factor affecting the fluidity and compressive strength of grout.The optimal proportion of sleeve grouting ma‐terials is as follows:water-binder ratio of 0.23,cement-sand ratio of 1.0:0.8,fly ash content of 10%,mineral powder content of 4%,machine-made sand replacement content of 25%,and the content of sulphate aluminate cement in the cementitious material is 20%.The grouting material is tested:all the properties are superior to the performance indicators of JG/T 408-2019,and the mechanical properties of the grouting joint meet the requirements of JGJ 355-2015 when applied in practical engineering.

关 键 词：灌浆料制备 套筒连接 配合比优化 正交试验 

分 类 号：TU578[建筑科学—建筑技术科学]