Results 21 to 30 of about 2,296,255 (298)

Structure, Impermeability and Durability of Cement Concrete

open access: yesНаука и техника, 2022
The paper presents the main hypotheses of frost destruction of cement concrete. The influence of cyclic temperature changes and the effect of static and dynamic (shock) loads on concrete on changes in the structure and strength of concreteis considered ...
E. I. Batyanovskiy   +2 more
doaj   +1 more source

The effect of the aggregate type on the properties of pavement concrete [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2018
This paper presents the results of laboratory tests on the properties of cement concrete containing various types of aggregate. The purpose of the tests was to determine the effect of aggregate on compressive strength, indirect tensile strength, air pore
Grzegorz Rogojsz   +2 more
doaj   +1 more source

Free proline in leaves as an indicator of the determination of winter wheat frost resistance

open access: yesЗерновое хозяйство России, 2018
Free proline in leaves as an indicator of the determination of winter wheat frost resistance The article considers the results of the determination of frost resistance of winter wheat, grown in the sowing boxes.
M. M. Ivanisov
doaj   +1 more source

Study of the Effects of Microgroove Geometry on Frost Structure [PDF]

open access: yes, 2012
The variation in the frost structure on a number of microgrooved brass surfaces is examined through an experimental study. The microgrooved samples are 45 mm x 45 mm in dimension with a broad range of groove dimensions.
Jacobi, Anthony M., Rahman, Md Ashiqur
core   +1 more source

Frost Formation on Fan-Supplied Tube-Fin Evaporators: A Visual and Numerical Analysis [PDF]

open access: yes, 2012
This paper presents an experimental and numerical study to evaluate the thermal-hydraulic performance of light commercial capacity evaporators operating under frosting conditions.
Da Silva, Diogo Londero
core   +1 more source

Analysis on the Factors Influencing Frost Resistance of Cement-stabilized Soil

open access: yesRenmin Zhujiang, 2020
The frost resistance is an important index to evaluate the durability of stabilized soil structure,this paper analyzes the effects of soil moisture content and cement content on frost resistance of cement-stabilized soil.The results show that:the cement ...
LI Xuede   +4 more
doaj  

Optimal Selection of Soils and Aggregates Mixtures for a Frost Blanket Course of Road Pavement Structure

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2012
Resistance to frost of road pavement structure is ensured by a functional frost blanket course from frost nonsusceptible soils or aggregate mixtures. The material used and the thickness of frost blanket course must not only ensure the required resistance
Audrius Vaitkus   +4 more
doaj   +1 more source

Frost Growth on Vertical Surfaces with Varying Wettability [PDF]

open access: yes, 2012
Frosting occurs on heat exchangers in heat pumping and refrigeration applications when the surface temperature of the heat exchanger is below the freezing point of water. The accumulation of frost on the heat transfer surface increases pressure drop (fan
El Cheikh, Amne, Jacobi, Anthony M.
core   +1 more source

Study on Frost Resistance of the Carbon-Fiber-Reinforced Concrete

open access: yesApplied Sciences, 2022
Frost resistance is a very important durability criterion of concrete in the cold environment. To improve the frost resistance of concrete, carbon fiber was added into the concrete.
Wenguang Kan, Zailin Yang, Liangliang Yu
doaj   +1 more source

Frost resistance of flexible pavements

open access: yesVestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture, 2020
The article shows that the algorithm used in the road design standard and national prestandard for calculating the frost resistance of flexible pavements has errors. The analysis is carried in terms of the probability theory. Using the moments method, the problem of frost resistance of flexible pavements is solved.
R. P. Moiseenko   +2 more
openaire   +2 more sources

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