The Range Values for the Design Parameters of Nanoengineered Concrete Components. Characteristics, Properties, Amounts and Effects on the Concrete Behaviour

Abstract

Abstract. The nanometric scale researches results can be found, in present, in every industry domains, due to the effects of the new products, obtained on the basis of this researches. In the concrete industry, the research goal at this level is to obtain, finally, a material with new features, whose structural behavior to be considerably better than of the current one. Basically, it aims to achieve, using nanotechnologies, a new structural material for constructions, starting from the current concrete advantages (good compressive strength, durability, etc.), eliminating the disadvantages (low tensile resistance, cracks, etc.), and controlling, in the same time, the costs. Thus, in this paper are presented the required parameters in order to obtain this kind of material, by highlighting the nanocomponents characteristics and the quantities that are used to achieve the expected quality requirements. The real time influence of these nanocomponents on the quality of the studied material can be observed using a dedicated software, specially developed for this purpose.

Soil salt balance in a cotton field under drip irrigation and subsurface pipe drainage systems

“…Current research on subsurface drainage has mainly focused on pipe parameters and water–salt balance during drainage. Radu and Onet (2013) carried out drip irrigation and subsurface pipe drainage (MDI‐SPD) experiments on meadow soils in Moldova. They pointed out the best laying depth for S P drainage was 1 m. Furthermore, Yuan et al.…”

“…Current research on subsurface drainage has mainly focused on pipe parameters and water-salt balance during drainage. Radu and Onet (2013) carried out drip irrigation and subsurface pipe drainage (MDI-SPD) experiments on meadow soils in Moldova. They pointed out the best laying depth for S P drainage was 1 m. Furthermore, Yuan et al (2011) used the annualized agricultural non-point source model to delineate the spacing of S P drainage in Maumee River Basin, Ohio, and pointed out that changing drain spacing from 12 to 15 m would reduce non-point source nitrogen loading by 35%.…”