Geopolymer concrete is an innovative, sustainable, cementless, and eco‐friendly concrete that directly reduces the carbon footprints due to the total replacement of the cement from the concrete. A very excessive amount of CO₂ produces in the production of cement. In the experimental investigation, analysis of the mechanical properties or engineering properties of the GPC of the different molarity of NaOH (8–16 M), and also different Na₂SiO₃/NaOH ratio (0.5–3.0) analyses in the destructive testing of the GPC. Examine the curing temperature effect on the engineering properties of the GPC. After the experimental investigation, oven‐cured specimens got a higher engineering strength compared to the ambient‐cured specimens of the same mix designs. The 14 M mix design got the optimum point for engineering strength among the various molar concentrated mix designs. In the case of the alkaline ratio, the 2.5 got the optimum point of the engineering strength among all ratios of the sodium silicate to sodium hydroxide. The highest compressive strength, splitting tensile, and flexural strength in the all mix designs got are 35.7 N/mm², 5.2 N/mm², and 5.6 N/mm² respectively at 56 days after oven‐curing. Based on results, proposed the correlation equation between the splitting strength and compressive strength and equation between the flexural strength and compressive strength.

中文翻译：

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氢氧化钠对粉煤灰基地质聚合物混凝土力学性能的影响

地质聚合物混凝土是一种创新，可持续，无水泥且环保的混凝土，由于从混凝土中完全替代了水泥，可直接减少碳足迹。在水泥生产中会产生非常过量的CO ₂。在实验研究中，分析了不同摩尔浓度的NaOH（8–16 M）以及不同的Na ₂ SiO ₃的GPC的力学性能或工程性能/ NaOH比值（0.5-3.0）在GPC的破坏性测试中进行分析。检查固化温度对GPC工程性能的影响。经过实验研究，与相同混合设计的环境固化标本相比，烤箱固化标本具有更高的工程强度。14 M混合料设计是各种摩尔浓缩混合料设计中工程强度的最佳点。在碱性比率的情况下，在硅酸钠与氢氧化钠的所有比率中，2.5达到了工程强度的最佳点。最高的抗压强度，劈裂抗拉强度和挠曲强度在所有配料设计得是35.7牛顿/毫米²，5.2牛顿/毫米²，和5.6牛顿/毫米²分别在烘箱固化后56天。根据结果​​，提出了抗拉强度与抗压强度之间的相关方程，以及抗弯强度与抗压强度之间的关系方程。