Experimental Study on Physical and Mechanical Characteristics of Rock-Concrete Combined Body Under Complicated Stress Conditions

2021 ◽  
Author(s):  
Yu Zhao ◽  
Mingxuan Shen ◽  
Jing Bi ◽  
Chaolin Wang ◽  
Yongtao Yang ◽  
...  
2015 ◽  
Vol 5 (4) ◽  
pp. 53-58
Author(s):  
Tatiana Vladimirovna PERMITINA

This article deals with the problem of water and thermal regime of subgrade of the road in the far north. The measures to regulate water and thermal regime of soil of roadbed are described. An experimental study to evaluate the effect of the waterproof materials on the temperature and humidity regime of the road construction. The tasks, aimed at identifying patt erns of change in the physical and mechanical characteristics and the migration of moisture in the subgrade of the road and in the active layer of permafrost, reinforced waterproof element, are set.


2019 ◽  
Vol 945 ◽  
pp. 115-119 ◽  
Author(s):  
Sergey V. Klyuev ◽  
T.A. Khezhev ◽  
Yu.V. Pukharenko ◽  
A.V. Klyuev

Acute questions of steelfiber using for disperse-reinforced fine-grained concrete are considered in the article. Researchers of steelfiber concrete patterns are held. The efficiency of using crushing dropout of quartzitic sandstone is proven. The article studies the physical and mechanical characteristics of the filler. The chemical composition of the binder is presented. For dispersed reinforcement of fine concrete the influence of steel fibre on the strength characteristics of the mixture was studied. The characteristics of the fiber and the technology of obtaining a fiber-concrete mixture are presented. Studies showed the effectiveness of steel fibre with a percentage of 3% and a cement-sand ratio of 1/3.


2017 ◽  
Author(s):  
Zihong Guo ◽  
Tangyong Li ◽  
Dongke Yu ◽  
Hua Tang ◽  
Yang Zhang ◽  
...  

2021 ◽  
Vol 2094 (2) ◽  
pp. 022077
Author(s):  
S S Dobrosmyslov ◽  
A S Voronin ◽  
Y V Fadeev ◽  
I G Endzhievskaya ◽  
S V Khartov

Abstract As part of the work, an experimental and theoretical study of the effect of adding wollastonite on the physical and mechanical characteristics of concrete was carried out. The internal stress was calculated according to Hooke’s law. The change in the specific volume was determined from the change in the volume of the hydrated phase. The calculation of the chemical interaction was carried out within the framework of thermodynamic equilibrium. According to the results of the work, it was shown that the addition of wollastonite leads to a linear decrease in the value of internal stresses, which is consistent with experimental results on the increase in compressive and bending strength.


2020 ◽  
pp. 22-26
Author(s):  
YURY G. IVANOV ◽  
◽  
YELENA V. MASHOSHINA ◽  
LYUDMILA N. VERLIKOVA ◽  
DARIA G. GELETIY ◽  
...  

2020 ◽  
Vol 787 (12) ◽  
pp. 63-65
Author(s):  
N.S. Sokolov

The problem of increasing the bearing capacity of the base is an relevant problem in modern geotechnical construction. When significant loads are transmitted to the base, the use of traditional technologies is not always justified. Often there is an urgent need to use non-standard ways to strengthen the bases. In many cases, the geotechnical situation is aggravated by the presence of weak underlying layers with unstable physical and mechanical characteristics in engineering-geological sections. When strengthening such bases with the help of traditional piles, the latter can get negative friction, which significantly reduces their bearing capacity on the ground, sometimes reaching zero values. This may lead to additional precipitations of the objects being constructed and constructed in the zone of geotechnical influence. The use of ERT piles in most cases successfully solves many complex geotechnical problems.


Author(s):  
G. F. Zhelezina ◽  
V. G. Bova ◽  
S. I. Voinov ◽  
A. Ch. Kan

The paper considers possibilities of using a hybrid fabric made of high-modulus carbon yarn brand ZhGV and high-strength aramid yarns brand Rusar-NT for polymer composites reinforcement. The results of studies of the physical and mechanical characteristics of hybrid composite material and values of the implementation of the strength and elasticity carbon fibers and aramid module for composite material are presented. 


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