Results 221 to 230 of about 2,100,756 (254)

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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Impact resistance of reactive powder concrete

Journal of Wuhan University of Technology-Mater. Sci. Ed., 2015
The impact behaviour of three types of reactive powder concretes (RPC) was studied using the split Hopkinson press bar (SHPB) testing method. These RPC were prepared with steel fiber volume fraction of 0%, 3%, and 4%, respectively. The stress-strain relationship, strain rate sensitivity threshold value, dynamic strength increase factor, modulus of ...
Chujie Jiao, Wei Sun
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Mechanical properties of reactive powder concretes

Materials and Structures, 1996
Reactive Powder Concretes (RPC) are a set of ultrahigh-strength concretes reinforced with steel fibers. Their compressive strength is between 200 and 800MPa, and their flexural strength can reach 140MPa.RPC200 has been studied with respect to compressive strength and two-point loading strength to define its mechanical behavior.RPC800, which has been ...
J. Dugat, N. Roux, G. Bernier
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Durability of Green Reactive Powder Concrete

2013
In marine environment, due to the effect of chloride ion, sulfate, magnesium ions, dry-wet cycle, and freeze-thaw cycle, the damage of reinforced concrete bridge pier is extremely serious. Reactive powder concrete, which is considered as a kind of green high performance concrete, has high durability, high strength and presents good environmental ...
Yue Wang, Ming-zhe An, Zi-ruo Yu, Xin-tuo Hou   +3 more
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Nondestructive Evaluation of Reactive Powder Concrete

AIP Conference Proceedings, 2004
Reactive powder concrete (RPC) has been introduced as a structural material for civil engineering applications. The material consists of a finely graded combination of cement, sand, ground quartz and silica fume which combined with water form a cement paste.
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Silica Fume Distribution and Reactivity in Reactive Powder Concretes

"SP-178: Sixth CANMET/ACI/JCI Conference: FLy Ash, Silica Fume, Slag & Natural Pozzolans in Concrete", 1998
Transmission Electron Microscopy (TEM), Scanning Transmission Electron Microscopy (STEM) and Chemical Analysis investigations lead to a fine characterization of Reactive Powder Concretes elaborated under different conditions as pressure application during setting and post-set heat treatment. An abrasive thinning method followed by ionic etching allowed
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Mechanical Properties of Ultra-High Performance Concrete Based on Reactive Powder Concrete: Effect of Sand-to-Cement Ratio, Adding Glass Fiber and Calcium Carbonate

Construction and Building Materials, 2023
Ali Heidari
exaly