Magazine of Civil Engineering, No.6 (66), 2016
The effect of sucrose on the kinetics of cement hardening has been studied. The study was carried out
in two comparative ways, one of which had the organic modifier introduced into cement as gauging liquid (“water – 2% sucrose solution”),
the other – as suspensions “cement – water – 2% sucrose solution”. The products of sucrose corrosion, synthesized in suspensions,
were used as addition agents in the “cement – water” system.
Application of polycarboxylate-based superplasticizers can contribute to the increase of concrete early strength.
It makes possible to obtain the concrete of the required strength after heat-steaming treatment with decreasing the
isothermal temperature and the Portland cement quantity compared to the concrete without admixtures.
The paper describes the special features of the calculation based on the load-bearing capacity of soil loaded with strip-shell
foundations which offer high efficiency in construction of medium and high-rise buildings on strongly compressible soils.
The necessity of this calculation is caused by the requirements of Building Regulations.
A review of shear strength analysis methods for ground bases reinforced with geosynthetics is given in the article.
An angle of stress dispersion has been found to be the parameter of soils and discrete materials which were calculated
according to the experimental data. The analysis of mathematical models that connect the angle of stress dispersion with
other soil parameters which are ascertained in the laboratory was performed.
Parameters of waves in water area of the projected port are normally obtained using physical and numerical modelling.
Physical modelling allows defininig structural details of the port’s facilities and provides with information for the
appropriate selection of a numerical model. The problems created by this approach are shown in the case study of the
projected port in Vostok (East) Bay, the Sea of Japan.
One of the primary problems solved for increasing energy efficiency of a building is increasing of the insulating properties
of the building envelope. The paper describes the method for determining the coefficient of thermotechnical uniformity by
analyzing a thermogram of parts of a building envelope. The method is based on obtaining temperature distribution matrix
on the surface of a building envelope fragment by thermography.