首页|单组分电炉镍渣基地聚物修补材料制备与性能调控

单组分电炉镍渣基地聚物修补材料制备与性能调控

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为利用具有潜在活性的固体废弃物电炉镍渣,制备单组分电炉镍渣基地聚物修补砂浆.基于正交实验和极差分析,通过掺入掺合料并改变碱模数和碱当量等关键影响因素,对地聚物砂浆各项修补性能进行调控,获取满足修补性能的最优配合比,确定各因素对修补性能的影响主次.结果表明,最优配比是矿渣掺量为 30%,粉煤灰掺量为 30%,碱模数为 1.2,碱当量为 6.5%,其 28d抗压、抗折强度分别为90.29、9.23 MPa,干燥收缩率为0.56×10-3,14 d拉伸粘结强度为3.64 MPa,满足修补砂浆规范要求.经比较,矿渣掺量对修补砂浆性能调控影响最为显著.
Preparation and performance control of one-part electric furnace nickel slag based geopolymer repair materials
In order to utilize solid waste electric furnace nickel slag with potential activity,this study aimed to develop a single-component geopolymer repair mortar based on electric furnace nickel slag.Through orthogonal experiments and range analysis,the key influencing factors were adjusted such as alkali modulus,alkali dosage,and the addition of admixtures to regulate the repair performance of the geopolymer mortar.The optimal proportioning ratio and the primary and secondary effects of each factor on repair performance were determined.The findings indicated that the optimal proportioning ratio consisted of 30%slag content,30%fly ash content,alkali modulus of 1.2,and alkali dosage of 6.5%.After 28 days,the compressive and flexural strengths of the mortar reached 90.29 and 9.23 MPa,respectively,and with a drying shrinkage rate of 0.56×10-3.The tensile bonding strength of the mortar reached 3.64 MPa at 14 days.These results met the requirements specified for repair mortar.Among the influencing factors,the slag content exhibited the most significant impact on the regulation of the repair mortar performance.

electric furnace nickel slaggeopolymer repair materialorthogonality testone-partmix optimizationperformance control

吴文达、张栋梁、王景杨、王雪芳

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福州大学先进制造学院,福建 泉州 362251

电炉镍渣 地聚物修补材料 正交实验 单组分 配合比 性能调控

国家自然科学基金青年基金泉州市科技计划近海公路建设与养护新材料技术应用交通运输行业研发中心开放基金绿色建筑材料国家重点实验室开放基金

518081242022C012R2022-K-2122021GBM07

2024

10.7631/issn.1000-2243.23185

福州大学学报(自然科学版)
福州大学

福州大学学报(自然科学版)

CSTPCD北大核心
影响因子：0.35
ISSN：1000-2243
年,卷(期)：2024.52(3)
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