FIELD: construction.
SUBSTANCE: method comprises securing anchor device connected with the instrument in the concrete, applying breaking load, and determining the strength form the breaking load. The concrete is provided with hole and ring groove coaxial to the hole. The depth of the groove is equal to the height of the specimen. The anchor device is then secured in the hole and breaking force is applied by pressing the anchor device until the specimen is spalled. The strength is determined from the formula 
where N is the breaking load, in N, h is the height of the specimen, in m, D is the diameter of the specimen, in m, and d is the diameter of the hole.
EFFECT: decreased labor consumption.
1 dwg, 1 ex
