Concrete Composite Properties with Modified Sodium Bentonite in Material Application Engineering
Modern concrete technology requires the use of a large scale of different types of additives that modify the concrete’s properties of features. Often, complicated technical conditions impose the usage of concretes with certain properties. One such example is a mixture transported by gravitational methods using rain gutters. In this situation, it is required to have a concrete mixture that has a high degree of fluidity and does not undergo segregation, sedimentation or other modification of uniformity while in transit. When placing the additional requirement that the concrete must have a high water resistance; bentonites may be particularly useful. This paper presents the results of mechanical and physical properties of concrete with different concentrations of ground sodium bentonite. The particle size being from 30 to 60 nm was added as a dry ingredient together with the aggregate at 1, 2, 3 and 4% by weight of the cement. The ground sodium bentonite demonstrated significant changes in the characteristics of the fresh and hardened concrete, such as: consistency, strength and the amount of capillary pressure.
B. Xu and H.Y. Li
J. Rajczyk and B. Langier, "Concrete Composite Properties with Modified Sodium Bentonite in Material Application Engineering", Advanced Materials Research, Vol. 583, pp. 154-157, 2012