Thermal Changes in the Mass, Size and Density of Steel Fiber Concrete after Calefaction

2021 ◽  
Vol 887 ◽  
pp. 434-439
Author(s):  
D.V. Zaitsev
Keyword(s):  
Experimental Study ◽  
High Temperatures ◽  
Steel Fiber ◽  
Linear Size ◽  
Theoretical Concepts ◽  
Thermal Changes ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Mass Size ◽  
The Impact

This report outlines the results of an experimental study conducted on the effects high temperatures have on changes in linear sizes, mass, and density of steel fiber concrete containing fiber with varying durability, types, diameter, and percentages by volume. After being exposed to heat, the steel fiber concrete reduces in linear size, as well as decreasing in mass and density. Changes are seen as a result of rising temperatures between 20-1100 °С The impact on the change in mass, size and density of the quantity and type of fiber is not unambiguous, it does not fully correspond to the theoretical concepts considered in the work and require additional research.

Influence of Crumb Rubber on Impact Energy of Steel Fiber Concrete Beams

2015 ◽  
Vol 802 ◽  
pp. 196-201
Author(s):  
Ahmed Tareq Noaman ◽  
Badorul Hisham Abu Bakar ◽  
Hazizan Md. Akil
Keyword(s):  
Impact Energy ◽  
Steel Fiber ◽  
Concrete Beams ◽  
Impact Load ◽  
Crumb Rubber ◽  
Fine Aggregate ◽  
Low Velocity ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
The Impact

This paper presents the impact energy of steel fiber concrete beams at first crack and failure with different replacement ratios of crumb rubber. The test was carried out using simple low velocity drop weight test rig for both normal concrete (NC) and steel fiber concrete (SFC). The crumb rubber with particle size of 1 – 2 mm was added with replacement ratios of 5%, 15%, and 25% by volume of fine aggregate. Six batches consisting of 6 beams (100x100x500 mm) containing 0.5% of hooked end steel fibers were tested under impact load in accordance with ACI Committee 544. The specimens were tested at the age 90 days after curing in water. The results show a reduction in the compressive strength for both NC and SFC with the incorporation of crumb rubber with greater reduction at higher crumb rubber content. However, the measured impact energy for both NC and SFC was foundincreasing with the crumb rubber replacement.

scholarly journals Pozzolaniс effect at high temperatures of high strength cement-sand matrix of steel-fiber concrete

2017 ◽  
Vol 14 (2) ◽  
pp. 178-183
Author(s):  
V. A. Dorf ◽  
◽  
R. O. Krasnovskiy ◽  
D. E. Kapustin ◽  
P. S. Sultygova ◽  
...  
Keyword(s):  
High Temperatures ◽  
Steel Fiber ◽  
High Strength ◽  
Fiber Concrete ◽  
Steel Fiber Concrete

Concrete and Fiber Concrete Impact Strength

2020 ◽  
Vol 1006 ◽  
pp. 101-106
Author(s):  
Mykola Surianinov ◽  
Volodymyr Andronov ◽  
Yurii Otrosh ◽  
Tetiana Makovkina ◽  
Sergii Vasiukov
Keyword(s):  
Impact Strength ◽  
Bending Strength ◽  
Steel Fiber ◽  
Experimental Studies ◽  
Dynamic Loads ◽  
Impact Tests ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Static And Dynamic Loads ◽  
The Impact

The results of experimental studies of the impact strength of samples of concrete and steel fiber concrete are presented. For dispersed reinforcement, three types of steel fiber were used - with bent ends, wave and flattened. Tests were conducted to determine the static and dynamic bending strength, and then - impact tests on the pendulum headstock MK-30. It was found that the impact strength increases significantly in the presence of fiber, but the type of fiber has almost no effect on it. Since specimens reinforced with a fiber content of 1.0 and 1.5% differ slightly in impact strength, 1.0% dispersed reinforcement in volume is recommended, both under static and dynamic loads.

scholarly journals Experimental and theoretical studies of biaxially prestressed steel-fiber-concrete slabs.

2018 ◽  
Vol 2 (3) ◽  
pp. 10-14
Author(s):  
Oleksandr Zhuravskyi ◽  
Andriy Gorobetc
Keyword(s):  
Steel Fiber ◽  
Physical Nonlinearity ◽  
Concrete Slabs ◽  
Theoretical Studies ◽  
Transverse Loading ◽  
Software Complex ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Experimental And Theoretical Studies

The article presents the results of experimental and theoretical studies of strength and deformability of steel-fiber concrete double-sided pre-stress slabs under the action of transverse loading. The simulation of such plates in the software complex LIRA-SAPR was performed taking into account the physical nonlinearity of materials.

Sign in / Sign up

Export Citation Format

Share Document