Estimation of the probability of thermal cracks in a monolithic concrete block using the cracking index
T. V. Lam, Postgraduate student;
N.T. Chuc, Postgraduate student;
N.X. Hung,Postgraduate student;
D.T. Qui, Postgraduate student;
B.I. Bulgakov, Associate Professor,
Candidate of Engineering Sciences;
R.A.Mashukov, 4th year student,
A.S. Akov, 4th year student;
Moscow State University of Civil Engineering
(National Research University)
Abstract. In recent years, many buildings and structures of monolithic concrete have been built in various cities of Vietnam, especially in Hanoi and Ho Chi Minh. However, damage and cracking of structures caused by thermal stresses arising in them become more and more common and greatly affect their reliability and durability.
In this article, the Vietnamese standard TCVN 9382 2012 was used to design the composition of heavyweight concrete, which intended for the manufacture of monolithic structures of highrise buildings. Evaluation of the possibility of thermal cracks in the concrete block body during the hardening of concrete was made using the cracking index. Key words: heavyweight concrete, monolithic concrete block, compressive strength, cracking index, temperature field, thermal stress.