预制装配式配网基础建设中的混凝土预制件材料优化  

Material optimization of prefabricated concrete in the infrastructure construction of prefabricated distribution network

作　　者：李继为 LI Jiwei(Xiong′an New Area Construction Engineering Quality and Safety inspection Service Center,Xiong′an 071700,Hebei,China)

机构地区：[1]雄安新区建设工程质量安全检测服务中心,河北雄安071700

出　　处：《金属功能材料》2023年第1期110-115,共6页Metallic Functional Materials

摘　　要：为了优化在预制装配式配网建设中使用的混凝土预制件,使其不仅相关性能达到硬性技术指标要求,还能够使其制作工艺达到最简。对于混凝土预制件来说,基础材料的优化是所有优化的根本。提出一种预制装配式变电站建筑过程中全轻混凝土材料最优配合比试验研究方法。再基于有效粒径与均匀系数对集料的级配指标进行描述;最后将所得到的最优配合比进行实地投入,进一步优化最优配合比,针对强度较低的C30混凝土,选用了强度高的水泥与减水率较高的聚羧酸混凝土减水剂进行试验,完成对混凝土材料最优配合比的研究。该实验结果表明,最优配合比下的混凝土,不仅强度得到提升,还节省了材料成本。最终得出的全轻混凝土的最佳材料配合比,对混凝土预制件性能和成本优化均有积极影响。为混凝土预制件材料优化提供了参考。In order to optimize the concrete prefabricated parts used in the construction of prefabricated distribution network, not only the relevant performance can meet the requirements of hard technical indicators, but also the production process can be minimized. For precast concrete, the optimization of the base material is fundamental to all optimizations. An experimental research method for the optimal mix ratio of all-light concrete materials in the construction process of prefabricated substations is proposed. Based on the effective particle size and uniformity coefficient, the gradation index of the aggregate is described;finally, the obtained optimal mix ratio is put into the field to further optimize the optimal mix ratio. For the C30 concrete with low strength, the high strength concrete is selected. The cement and polycarboxylate concrete water reducing agent with high water reducing rate were tested to complete the research on the optimal mix ratio of concrete materials. The experimental results show that the concrete under the optimal mix ratio not only improves the strength, but also saves the material cost. The optimal material mix ratio of all-light concrete finally obtained has a positive impact on the performance and cost optimization of precast concrete parts. Provides a reference for material optimization of concrete precast parts.

关 键 词：装配式 混凝土预制件 全轻混凝土 最优配合比 

分 类 号：TU756[建筑科学—建筑技术科学]