Results 31 to 40 of about 63,518 (142)

THE EFFECT OF CURING CONDITION ON COMPRESSIVE STRENGTH IN HIGH STRENGTH CONCRETE

open access: yesDiyala Journal of Engineering Sciences, 2009
The paper shows the effect of curing condition on compressive strength in high strength concrete  in three cases (Group A(moist curing in water for 7 days followed by air curing ) ,Group B(curing until the age test in water) and Group C(curing at high ...
Ali Hameed
doaj   +1 more source

Behaviour of high-strength concrete circular columns confined by high-strength spirals under concentric compression

open access: yesJournal of Civil Engineering and Management, 2020
This paper tested the behaviour of 32 high-strength concrete columns confined by high-strength spirals under concentric compression. The test parameters included unconfined concrete compressive strength, spiral yield strength, volumetric ratio, and ...
Chongchi Hou, Wenzhong Zheng, Wei Chang
doaj   +1 more source

Bond performance between recycled concrete and steel bar after high temperature

open access: yesNonlinear Engineering, 2023
To investigate the influence of high temperatures on the bond performance of recycled concrete and steel bar, this article considers the influence of different concrete types (ordinary concrete and recycled concrete) and different temperatures (20, 100 ...
Wang Qihao   +3 more
doaj   +1 more source

FINE-GRAINED HIGH-STRENGTH CONCRETE [PDF]

open access: yesConstruction Materials and Products, 2020
the article discusses the possibilities of improving the strength characteristics of fine-grained concrete. Modification of compositions and production technology of fine-grained high-strength concrete is possible with the use of natural and man-made raw materials of various chemical and mineral composition.
openaire   +1 more source

The role of eigen-stresses on apparent strength and stiffness of normal, high strength, and ultra-high performance fibre reinforced concrete

open access: yesDevelopments in the Built Environment, 2023
Concrete is characterized in terms of its engineering properties, mainly strength and stiffness, which are subsequently used in structural design.
Nikhil Awasthy   +4 more
doaj   +1 more source

Effect of Hybrid Fibers on the Mechanical Properties of High Strength Concrete

open access: yesTikrit Journal of Engineering Sciences, 2014
In this study, high strength concrete of 75 MPa compressive strength was investigated. The experimental program was designed to study the effect of fibers and hybrid fibers (steel and polypropylene fibers) on the fresh (workability and wet density) and ...
Hamid H. Hussein, Saeed K. Rejeb Hayder T. Abd
doaj  

The Effects of Design Strength, Fly Ash Content and Curing Method on Compressive Strength of High Volume Fly Ash Concrete: A Design of Experimental

open access: yesMATEC Web of Conferences, 2017
High volume fly ash concrete becomes one of alternatives to produce green concrete as it uses waste material and significantly reduces the utilization of Portland cement in concrete production.
Solikin Mochamad, Setiawan Budi
doaj   +1 more source

Energy Evolution Analysis and Brittleness Evaluation of High-Strength Concrete Considering the Whole Failure Process

open access: yesCrystals, 2020
In this work, we aimed to solve the problems that exist in the brittleness evaluation method of high-strength concrete through a triaxial compression test of C60 and C70 high-strength concrete.
Ruihe Zhou   +4 more
doaj   +1 more source

Strength and Microstructural Investigation of Quaternary Blended High-Strength Concrete

open access: yesAdvances in Civil Engineering, 2021
This research focuses on studying the effect of different supplementary cementitious materials (SCMs) such as waste ceramic powder (WCP), lime powder (LP), and ground granulated blast furnace slag (GGBS) in combination on strength characteristics and ...
Ayele Bereda, Belachew Asteray
doaj   +1 more source

SOME FACTORS AFFECTING THE ULTRASONIC PULSE VELOSITY TEST RESULTS OF HIGH STRENGTH CONCRETE

open access: yesJournal of Engineering, 2006
The high strength concrete is characterized by its high strength, low porosity and good performance under aggressive environmental conditions. The paper presents some factors affecting the Ultrasonic Pulse Velocity test results for high strength ...
Nada Mahdi Fawzi, A. A. Ali
doaj   +1 more source

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