| 摘要: |
| 用响应面法分析了调凝组分与调黏组分对3D打印砂浆建造性和凝结时间的影响规律.结果表明：快硬硫铝酸盐水泥作为调凝组分能有效缩短砂浆的凝结时间；羟丙基甲基纤维素增稠剂与硅酸镁铝作为调黏组分可以提高砂浆的触变性，但会延缓砂浆的凝结；基于响应面法采用线性模型和二次模型拟合砂浆建造性、开放时间和凝结时间，模型具有显著性；经过响应面优化，可配制出凝结时间可调、建造性良好且开放时间合适的3D打印水泥基材料. |
| 关键词: 3D打印 水泥基材料 建造性 开放时间 凝结时间 响应面法 |
| DOI：10.3969/j.issn.1007-9629.2024.06.009 |
| 分类号:TU528.01 |
| 基金项目: |
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| Optimizing Properties of 3D Printing Mortar Using Response Surface Methodology |
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WANG Kaiqiang, LING Chaowei, LI Di, CHI Shengfeng, HU Chunyou
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China Construction Institute of Advanced Technology， China Construction Third Bureau Group Co.， Ltd.， Wuhan 430070， China
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| Abstract: |
| Response surface methodology（RSM） was used to analyze the influence of the setting regulating component and viscosity regulating components on the buildability and setting time of 3D printing cementitious materials. The results show that sulphoaluminate cement can effectively shorten the setting time of mortar as a setting regulating component. Hydroxy propy methyl cellulose thickener and magnesium aluminum silicate as viscosity regulating components can improve the thixotropy of mortar， but it will delay the setting of mortar. Using response surface analysis method， linear model and quadratic model can be used to fit the buildability， open time and setting time of mortar， respectively，and the model shows significant differences. After optimization through RSM， 3D printing cementitious materials with adjustable setting time， good buildability and appropriate open time can be prepared. |
| Key words: 3D printing cementitious material buildability open time setting time response surface methodology |
