Nowadays, finding a novel and easy accessible method to estimate the uniaxial strength of concrete is of utmost importance in the construction industry. The uniaxial or unconfined compressive strength (UCS) test is a conventional method for determining the compressive strength of concrete. In this research, a non-destructive method based on surface drilling on concrete is provided. Strength parameters such as the internal angle of friction and cohesion were obtained using an analytical model based on the partial equilibrium of the operating forces in the drilling process. Data, such as drilling power, speed, torque and penetration rate were all acquired from a drilling machine designed and built. Evaluating the effect of additional parameters such as the crushed zone and contact friction in the drilling process is what makes this analytical model superior to the previous models. Accurate results have been obtained by applying this method to rock samples. For this study, the new method was applied concrete samples with a maximum grain size of 0.6–12.5 mm. The method's performance and accuracy were assessed based on the conventional UCS method. While using an appropriate drill diameter, this method gives highly accurate results with an estimated error of below 10%. In the surface drilling method, a handful of holes with about 25 mm depth are created on the concrete surface at regular distance-intervals. The strength parameters of concrete are then calculated using linear fitting and data obtained from the drilling operation, including drilling power, speed, torque, and penetration rate. This can be utilized as a non-destructive method to determine various strength parameters and unconfined compressive strength of concrete due to its accuracy and precision.

如今，寻找一种新颖且易于使用的方法来估计混凝土的单轴强度在建筑行业中至关重要。单轴或无侧限抗压强度（UCS）试验是确定混凝土抗压强度的常规方法。在这项研究中，提供了一种基于混凝土表面钻孔的无损方法。强度参数（例如内摩擦角和内聚角）是使用解析模型基于钻井过程中操作力的局部平衡获得的。诸如钻探功率，速度，扭矩和穿透率等数据都是从设计和制造的钻探机上获取的。在钻井过程中评估诸如破碎区和接触摩擦之类的附加参数的影响，使该分析模型优于以前的模型。通过将这种方法应用于岩石样品，已经获得了准确的结果。对于这项研究，该新方法应用了最大晶粒尺寸为0.6–12.5 mm的混凝土样品。该方法的性能和准确性是基于常规UCS方法进行评估的。当使用适当的钻头直径时，此方法可提供高度准确的结果，且估计误差低于10％。在表面钻孔方法中，在混凝土表面上以规则的距离间隔创建了一些深度约为25 mm的孔。然后使用线性拟合和钻探操作获得的数据来计算混凝土的强度参数，包括钻孔功率，速度，扭矩和穿透率。由于其准确性和精度，它可以用作确定各种强度参数和无限制抗压强度的无损方法。