Surface scaling resistance of concrete modified with bituminous addition

Abstract

Abstract. Deterioration of concrete due to surface scaling is a very serious durability problem faced by the construction industry in cold environments. The experimental results of resistance to scaling due to cyclic freezing and thawing in the presence of 3 % NaCl solution (de-icing agent) of not air-entrained concrete with and without bituminous addition are presented and discussed in the paper. The results have been analysed using the analysis of variance and regression to verify the effect of addition content, number of freeze-thaw cycles and the sort of cement on concrete ability to scaling. The statistical analysis showed that the bituminous addition significantly improves the scaling resistance of Portland cement concrete.

Freeze-thaw durability of recycled concrete containing ceramic aggregate

“…Concrete structures (Kosior-Kazberuk and Jezierski, 2004) are continually exposed to attack by physical, chemical and biological agents that may cause rapid decay, shortening their service life and raising maintenance and repair costs. Durability, one of the most important properties of materials, is defined in Eurocode EN 1992-2 (European Committee for Standardization, 2010a) as follows: "A durable structure shall meet the requirements of serviceability, strength and stability throughout its intended working life, without significant loss of utility or excessive maintenance.…”

Evaluation of Concrete Resistance to Chloride Ions Penetration by Means of Electric Resistivity Monitoring

“…The tests were carried out with specimens prepared of mixtures with two different values of addition content as well as with unmodified control specimens. The mass ratio of the bituminous paste to cement (p/c), determined on the ground of previous test results, described in [7,8], was 0,11; 0,13 for cement C1 and 0,095, 0,11 for cement C2. A water-cement ratio (w/c) in the tested concretes ranged from 0,355 to 0,395 (dependably on the bituminous paste content).…”

Study on Strength and Ultrasonic Velocity of Air-Entrained Concrete and Plain Concrete in Cold Environment

“…For concrete structures during their service life, rapid decay may be caused by chemical, physical, and biological agents; then the service life will be shortened and more maintenance and repair costs will be used [1]. Such as concrete dams and hydraulic structures and so forth in cold environments.…”