混凝土测试抗压强度检测数据

混凝土作为一种多功能材料，广泛用于建筑工程中的柱、梁、板等主要承重构件的制作。为了确保混凝土结构的安全和可靠性，混凝土抗压强度试验是必不可少的工作。这一试验能够评估混凝土的稳定性，并提供工程师们在设计和建造过程中的参考依据，有利于保障混凝土质量，提升建筑工程结构安全性。依据国家标准GB/T 50081-2019《混凝土物理力学性能试验方法标准》，按标准方法配合比水泥:水:砂:石=1:0.33:1.57:2.19:0.138，选择水泥品种及强度等级为硅酸盐52.5，石种类及粒径为5-25mm，砂粗细程度为中砂制作和标准养护的边长为150mm的立方体试件，在28天龄期用标准试验方法利用检测设备YES-2000压力试验机测得立方体抗压强度。混凝土强度设计等级为C50时，取三个试件通过仪器测出最大荷重，测得的强度值均应乘以尺寸换算系数，对边长150 mm的立方体试件可取为1.00，从而计算出三个试件的抗压强度，平均值作为组试件抗压强度代表值，再与设计等级强度进行相除，得到最后的达到设计强度百分比。公式如下：达到设计强度(%)={【（最大荷重1*换算系数1.00）/受压面积+（最大荷重2*换算系数1.00）/受压面积+（最大荷重3*换算系数1.00）/受压面积】/3}/设计等级*百分比。Concrete, as a versatile construction material, is widely utilized in fabricating primary load-bearing components such as columns, beams, and slabs in civil engineering projects. To ensure the safety and reliability of concrete structures, the concrete compressive strength test is an indispensable procedure. This test can evaluate the stability of concrete and provide reference for engineers during the design and construction phases, which helps guarantee concrete quality and improve the structural safety of construction projects. According to the national standard GB/T 50081-2019 *Standard Test Method for Physical and Mechanical Properties of Concrete*, the test adopts the standard mix proportion of cement:water:sand:aggregate = 1:0.33:1.57:2.19:0.138, using Portland cement 52.5 as the cement type and strength grade, 5-25 mm aggregate, and medium sand. Cubic specimens with a side length of 150 mm were prepared and standard cured, and their cubic compressive strength was measured using the YES-2000 pressure testing machine via standard test methods at the age of 28 days. When the designed concrete strength grade is C50, three specimens are tested to obtain their respective maximum loads. All measured strength values shall be multiplied by the size conversion factor, which is 1.00 for 150 mm side-length cubic specimens. The compressive strength of each specimen is calculated, and the average value of the three results is taken as the representative compressive strength of the test group. Divide this average value by the designed strength grade to obtain the final percentage of reaching the designed strength. The formula is as follows: Percentage of Reaching Designed Strength (%) = {[(Max Load₁ × Conversion Factor 1.00)/Compression Area + (Max Load₂ × Conversion Factor 1.00)/Compression Area + (Max Load₃ × Conversion Factor 1.00)/Compression Area]/3} / Designed Strength Grade × 100

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特点

该数据集包含120条混凝土抗压强度检测记录，涵盖设计等级、养护方式、龄期等关键指标，用于评估混凝土结构的安全性和质量，依据国家标准进行试验和计算。