Results 21 to 30 of about 63,518 (142)

Modified Light Concrete of High Strength

open access: yesMATEC Web of Conferences, 2018
The study is devoted to the development of increased strength lightweight concrete based on Portland cement modified with a complex organo-siliceous additive containing a polycarboxylate superplasticizer and an active fine-ground siliceous component. The
Pushkarova Katerina   +2 more
doaj   +1 more source

Repaired Reinforced Concrete Beams with Normal and High Strength Concrete

open access: yesDiyala Journal of Engineering Sciences, 2013
In resent years several attempts were undertaken to repair damaged reinforced concrete structures. Studies on the effectiveness of repaired and strengthened reinforced concrete elements which fail primarily due to formation of major flexural cracks are ...
Emad Yassin Khudhair
doaj   +1 more source

The effects of steel fiber waste tyre on properties of high strength fly ash concrete [PDF]

open access: yesMATEC Web of Conferences, 2019
The utilization of steel fiber from waste tyres can be an alternative to reduce waste tyres due to the increase of tyre production in Indonesia annually. Steel fiber from waste tyre can be added to concrete mix to improve the concrete properties. In this
Fauzan   +4 more
doaj   +1 more source

Compressive strength of masonry constructed with high strength concrete blocks

open access: yesRevista IBRACON de Estruturas e Materiais, 2017
Although the use of high strength concrete blocks for the construction of tall buildings is becoming common in Brazil, their mechanical properties and behavior are not fully understood.
E. S. FORTES   +3 more
doaj   +2 more sources

Effects of High-Volume Ground Slag Powder on the Properties of High-Strength Concrete under Different Curing Conditions

open access: yesCrystals, 2021
Massive high-strength concrete structures tend to have a high risk of cracking. Ground slag powder (GSP), a sustainable and green industrial waste, is suitable for high-strength concrete.
Yuqi Zhou, Jianwei Sun, Zengqi Zhang
doaj   +1 more source

The bond stress x slipping relationship

open access: yesRevista IBRACON de Estruturas e Materiais
A few international standards regulate the use of the high strength concrete, which may not be adopted generally without consideration of the differences that can be among the materials in different countries.
M. T. G. BARBOSA, E. S. SÁNCHEZ FILHO
doaj   +1 more source

Studies of Failure of High–Strength Concrete

open access: yesEngineering Transactions, 2015
This paper presents results of studies, conducted by means of the acoustic emission technique and strain measurements, of the failure of high-quality concrete. Several concretes differing in their composition and compression strength were tested.
J. Hoła
doaj   +1 more source

Simplified Effective Compressive Strengths of Columns with Intervening Floor Slabs

open access: yesInternational Journal of Concrete Structures and Materials, 2020
The current design codes discuss the effective compressive strengths of columns, which reflect a decrease in load transfer performance that can occur when columns and slabs have different concrete compressive strengths. The effective compressive strength
Seung-Ho Choi   +5 more
doaj   +1 more source

Increased plasticity of nano concrete with steel fibers [PDF]

open access: yesИнженерно-строительный журнал, 2020
High strength concrete or nano concrete, it is often brittle, so it is necessary to study the solutions to increase the plasticity to obtain the structure to ensure the bearing capacity.
V.T. Ngo   +3 more
doaj   +1 more source

valuation of Mix Proportions and Mechanical Properties of Normal and High-Strength Fibers Concrete

open access: yesPolytechnic Journal, 2019
An experimental program is carried out to evaluate the mix design and mechanical properties of normal strength concrete (NSC) grade 40 MPa and high-strength concrete grade 60 and 80 MPa.
Imad R. Mustafa, Omar Q. Aziz
doaj   +1 more source

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