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超低温下高强砂浆强度发展

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Abstract:

研究了在-110℃超低温养护时间与含水率等因素对水灰比为0.31的高强砂浆的抗压和抗折强度发展的影响,采用最小二乘法非线性拟合法研究并提出了高强砂浆在超低温下强度发展方程。结果表明高强砂浆在超低温下抗压强度与抗折强度均可以表示为超低温养护时间和含水率的函数关系,与超低温养护时间成指数关系,而与含水率成二次函数关系;含水率对高强砂浆超低温下抗折强度的影响大于其对超低温下抗压强度的影响。

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