Early-Age Mechanical Properties of 3D-Printed Mortar with Spent Garnet.

This study determines the effect of spent garnet as a replacement for natural sand in 3D-printed mortar at early ages. Five mixes with different spent garnet amounts were prepared (0%, 25%, 50%, 75% and 100% by volume). The ratio of binder to aggregate remained unchanged.

Mechanical Performance and Environmental Assessment of Sustainable Concrete Reinforced with Recycled End-of-Life Tyre Fibres.

The presented research's main objective was to develop the solution to the global problem of using steel waste obtained during rubber recovery during the tire recycling. A detailed comparative analysis of mechanical and physical features of the concrete composite with the addition of recycled steel fibres (RSF) in relation to the steel fibre concrete commonly used for industrial floors was conducted. A study was carried out using micro-computed tomography and the scanning electron microscope to determine the fibres' characteristics, incl.

Calibration of Steel Rings for the Measurement of Strain and Shrinkage Stress for Cement-Based Composites.

Concrete shrinkage is a phenomenon that results in a decrease of volume in the composite material during the curing period. The method for determining the effects of restrained shrinkage is described in Standard ASTM C 1581/C 1581M-09a. This article shows the calibration of measuring rings with respect to the theory of elasticity and the analysis of the relationship of steel ring deformation to high-performance concrete tensile stress as a function of time.

Effect of Curing Methods on Shrinkage Development in 3D-Printed Concrete.

Technological developments in construction have led to an increase in the use of 3D modelling using CAD environments. The popularity of this approach has increased in tandem with developments in industry branches which use 3D printers to print concrete based printing materials in construction, as these allow freedom in shaping the dimensions of supporting elements. One of the biggest challenges for researchers working on this highly innovative technology is that of cement material shrinkage.

[Asymptomatic bacteriuria in pregnancy].

Bacteriuria is a presence of bacteria in urine. It may remain asymptomatic or elicit acute, symptomatic urinary tract infection. In pregnancy, due to physiological changes in the woman organism it increases risk of serious infectious and obstetric complications and therefore requires a different approach than in general population.

[Ezetimibe as a treatment for dyslipidaemia in CKD].

Cardiovascular disease is the leading cause of death among patients with chronic kidney disease (CKD). Primary and secondary prevention of cardiovascular events is one of the major CKD patients' treatment targets. Dyslipidaemia is the important modifiable risk factor in general population.