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Response surface design of solid waste based geopolymer

机译：固体废物基地质聚合物的响应面设计

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Solid waste (slag and fly ash) based geopolymer (SWG-SF) was developed on the basis of response surface methodology (RSM), using the fly ash to slag ratio (FSR), alkali content (AC), makeup of alkali activator (n) and binder to water ratio (BWR) as design parameters. Flexural strength (f(f-3d)) and compressive strength (f(c-3d)) after 3 days of standard curing were tested, the early strength systems were established, the prediction of strength system was validated by comparison, and the effects of design parameters on f(f-3d) were studied. The test result shows that the reliability and accuracy of the early strength system of SWG-SF by adopting RSM can be verified in terms of mathematics and application, and the early strength system can be used for theoretical study and practice guidelines; according to analysis on the strength system, f(f-3d) increases linearly with BWR, and the increasing rate is closely related to FSR; f(f-3d) increases linearly with n, and the increasing rate is closely related to AC; f(f-3d) decreases continuously with FSR, but the decreasing rate gets slower and slower, and BWR has certain influence on the change rate of strength; and f(f-3d) increases at the beginning and then decreases with AC, which suggests that AC has an optimum value (0.146-0.055n). Thus it can be seen that RSM can be widely used in the preparation of new solid waste based geopolymer and has promising applications in the utilization of solid waste.
机译：基于响应面方法（RSM），使用粉煤灰与炉渣的比率（FSR），碱含量（AC），碱活化剂的组成（RSM），开发了基于固体废物（矿渣和粉煤灰）的地质聚合物（SWG-SF）。 n）和粘合剂与水的比例（BWR）作为设计参数。测试标准固化3天后的抗弯强度（f（f-3d））和抗压强度（f（c-3d）），建立了早期强度体系，通过比较验证了强度体系的预测，并验证了效果研究了设计参数对f（f-3d）的影响。测试结果表明，采用RSM的SWG-SF早期强度体系的可靠性和准确性可以在数学和应用方面得到验证，并且可以用于理论研究和实践指导。根据强度体系分析，f（f-3d）随BWR线性增加，且增加速率与FSR密切相关。 f（f-3d）随n线性增加，且增加速率与AC密切相关; f（f-3d）随FSR的增加而连续下降，但下降速度越来越慢，BWR对强度变化率有一定影响。 f（f-3d）在开始时随AC增加而减小，这表明AC具有最佳值（0.146-0.055n）。因此可以看出，RSM可广泛用于制备基于固体废物的新型地质聚合物，并在固体废物的利用方面具有广阔的应用前景。

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