КОНТРОЛЬ ЯКОСТІ ЦЕМЕНТОБЕТОННИХ ПОКРИТТІВ АВТОМОБІЛЬНИХ ДОРІГ НА ОБ’ЄКТАХ ВЕЛИКОГО БУДІВНИЦТВА

Abstract

Abstract. The article is devoted to quality control of cement-concrete road surfaces at large construction facilities. Purpose of work. Improvement the methods of calculating the characteristic and design values of the cement concrete strength. The object of research is the cement concrete pavement. Research method: experimental scientific-research. The article provides: the quality control process in the construction of cement-concrete pavement and bottom, statistical processing of experimental values compressive and tensile strength, comparative characteristics in normative documents and the main changes between them are performed, also analysis of the European standard is carried out. The values of the tolerance limit t for calculating the characteristics and design values of strength are given, for the number of tests n = 25 with different reliability index for transport structures and distribution laws. The calculation and comparison of the characteristic and calculated design values of the cement concrete strength in accordance with the national standard and the European one is carried out. The results can be used in the calculation of the characteristic and design values of the cement concrete strength during design of concrete mixes.