The use of Nanomaterials in the construction sector: A literary review

Abstract

Currently, one of the methods to improve the properties of materials in construction is the use of nanomaterials. The objective of this paper is to review the technological advances in the application of nanomaterials, which improve mechanical properties when used in concrete, soils, pavements, among others. A total of 86 articles corresponding to the Scopus, Ebsco, Science Direc and IOP Science databases were reviewed. The studies show that with the application of nanomaterials, positive results are obtained in the improvement of the compressive and flexural strength of concrete, improvement in the stabilization of soils and in asphalt, avoiding the formation of grooves and cracks. The studies conclude that the applicability of nanomaterials in the construction industry is a good alternative from a sustainable point of view, in order to reduce the indiscriminate use of non-renewable resources

Functional Bi2O3/Gd2O3 Silica-Coated Structures for Improvement of Early Age and Radiation Shielding Performance of Cement Pastes

“…Knowledge related to these aspects is critical, as the amount of nano-admixtures used for radiation shielding purposes usually exceeds the optimal value for ensuring proper mechanical and durability performance of cement-based composites. It is widely agreed that, typically, the optimal content of nanoparticles lies within the range of 0.5 to 5% mass of binder [ 44 , 45 , 46 ]. However, for radiation shielding applications, the amount of a single nano-admixture frequently ranges between 3 and 10 wt% [ 8 , 10 , 12 , 13 , 14 , 17 , 47 ], therefore, higher replacement rates of a binder with nanoparticles might lead to undesirable alterations in the hydration process of cementitious systems.…”