陶粒混凝土早龄期抗压强度试验研究

Investigation on Compressive Strength of Ceramsite Concrete at Early Age

摘要: 陶粒混凝土具有质轻、耐久性和保温性好等特点，在建筑工程中多有应用。为研究陶粒混凝土早龄期抗压强度，通过28组，每组含9个边长150 mm的立方体试件的试验，量测陶粒混凝土第1天至第28天的抗压强度，分析陶粒混凝土早龄期抗压强度均值、标准差和变异系数随时间的变化规律。利用对数模型、指数模型、双曲线模型和三参数模型，分别建立陶粒混凝土28 d内抗压龄期强度的计算模型。结果表明对数模型计算值与试验结果吻合最优，可以用于陶粒混凝土早龄期抗压强度的计算。

Abstract: Ceramsite concrete is widely used in construction projects owing to its light weight, good durability and heat preservation. To research the compressive strength of ceramsite concrete at early age, the experiments with 28 groups of cubic specimens with 9 length of a side 150 mm in each group are carried out to measure the compressive strength of ceramsite concrete from the first day to the 28th day, and to analyze the mean value, standard deviation and coefficient of variation of compressive strength of ceramsite concrete in early age with the change of time. The calculation models of the compressive strength of ceramsite concrete within 28 days were established using logarithmic model, exponential model, hyperbolic model and three-parameter model respectively. Finally, the results show that the logarithmic model is in good agreement with the experimental results and can be used to calculate the compressive strength of ceramsite concrete at early age.