Results 201 to 210 of about 1,986,611 (234)

Reactive Powder Concrete as a Polymer Modified Concrete

Restoration of Buildings and Monuments, 2012
One of the varieties of cement-based composites, characterized by ultra high strength, are the materials belonging to a group called Reactive Powder Concretes (RPC). These materials, of compressive strength of several hundred MPa, are achieved through appropriate selection of components and the use of different technological treatments.
Jacek Śliwiński, Tomasz Zdeb
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Ultrasonic testing of reactive powder concrete

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2004
Concrete is a critical material for the construction of infrastructure facilities throughout the world. Traditional concretes consist of cement paste and aggregates ranging in size from 6 to 25 mm that form a heterogeneous material with substantial compressive strength and a very low tensile strength.
Glenn, Washer, Paul, Fuchs, Benjamin A, Graybeal, Joseph Lawrence, Hartmann   +3 more
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Composition of reactive powder concretes

Cement and Concrete Research, 1995
Abstract Development of an ultra-high strength ductile concrete designated RPC (Reactive Powder Concrete), was made possible by the application of a certain number of basic principles relating to the composition, mixing and post-set heat curing of the concrete.
Pierre Richard, Marcel Cheyrezy
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Principles of Reactive Powder Concrete

2021
There have been multiple developments and improvements in concrete technologies that had impacts on structural system in recent years. The cement mixtures are used with silica fumes in place of steel fibers and silica fumes (pozzolanic materials) in the form of superplasticizers and are classified as ultra-high-strength concretes to enhance the slab ...
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Mechanical Properties of Modified Reactive Powder Concrete

SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, 1997
Original Reactive Powder Concrete (RPC) - in form of a superplasticized cement mixture with silica fume, steel fibers and ground fine quartz was studied in comparison with a modified RPC where a graded natural aggregate (max size 8 mm) was used to replace the fine sand and/or part of the cementitious binder.
Collepardi, Silvia, Coppola, Luigi, Troli, Roberto, Collepardi, Mario   +3 more
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Experimental Study of Durability of Reactive Powder Concretes

Journal of Materials in Civil Engineering, 1996
The durability of reactive powder concretes (RPC) has been defined by measuring porosity, air permeability, water absorption, diffusion, and migration of chloride ions, accelerated carbonation, resistance to reinforcement corrosion, resistivity, and resistance to mechanical abrasion.
Roux, N., Andrade Perdrix, Carmen, Sanjuán, Miguel Ángel   +2 more
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Hole Damage in Drilling of Reactive Powder Concrete

Journal of Materials in Civil Engineering, 2011
This study deals with the analysis of hole damage in the drilling of reactive powder concrete (RPC). Attention was first focused on the definition of an original approach on the basis of digital image processing (DIP) to quantify the extent of the damage.
GISARIO, ANNAMARIA, BOSCHETTO, Alberto, VENIALI, Francesco   +2 more
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Reactive powder concrete with lightweight aggregates

Construction and Building Materials, 2020
Abstract The paper presents test results of lightweight concretes obtained by introduction of lightweight aggregates: Pollytag, expanded clay aggregate and expanded polystyrene beads (EPS) in quantity from 30 vol% to 60 vol% to the RPC mix. It was demonstrated that addition of the expanded clay aggregate allowed to obtain lightweight RPC with the ...
Stefania Grzeszczyk, Grzegorz Janus
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Reactive powder concrete reinforced by nanoparticles

Advances in Cement Research, 2016
The influences of four nanoparticles of nanosilica (SiO2), nano-calcium carbonate (CaCO3), nano-aluminium oxide (Al2O3) and nano-iron oxide (Fe2O3) on workability, hydration, pore structure and mechanical strength of reactive powder concrete (RPC) are investigated by macro/microscopic methods. The aim of this study is to provide an essential basis for
Guangcheng Long, Ye Shi, Kunlin Ma, Youjun Xie   +3 more
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Flexural Strength of the Reactive Powder Concrete

Solid State Phenomena, 2016
Reactive powder concrete (RPC) is cement composite which is characterized by an absence of coarse aggregate. That resulted in a greater homogeneity of the mixture and thus also in a higher compressive strength. On the other side, the absence of coarse aggregate and typically a large volume of the paste lead to the deterioration of some of the ...
Michal Ženíšek, Tomáš Vlach, Lenka Laiblová   +2 more
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