High Stpength Fiber Reinforced Cement Composites

1984 ◽  
Vol 42 ◽  
Author(s):  
Antoine E. Naamian
Keyword(s):  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Cement Matrix ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
High Fiber ◽  
Reinforced Cement ◽  
High Matrix ◽  
High Strength Fiber ◽  
Strength And Ductility

AbstractThe effects of fiber reinforcenent; on the response of high strength fiber reinforced concrete in conmpression, tension and flexure are reviewed. Tradeoffs between the use of high fiber contents to achieve comiposite strength and ductility, and a reduction in matrix porosity to achieve high matrix strength are discussed. Methods used to increase composite strength include application of pressure after casting, addition of fly-ash, silica fumes and or sulerplasticizers to the cement matrix, and mixing high volurite contents of high strength stiff fibers.

scholarly journals Numerical Simulation of the Mechanical Behavior of Fiber-Reinforced Cement Composites Subjected Dynamic Loading

2021 ◽  
Vol 11 (3) ◽  
pp. 1112
Author(s):  
Nikita Belyakov ◽  
Olga Smirnova ◽  
Aleksandr Alekseev ◽  
Hongbo Tan
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Dynamic Loading ◽  
Fiber Reinforced Concrete ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
Lab Experiments ◽  
Reinforced Cement ◽  
Underground Workings ◽  
Concrete Damaged Plasticity

The problem of damage accumulation in fiber-reinforced concrete to structures supporting underground workings and tunnel linings against dynamic loading is insufficiently studied. The mechanical properties were determined and the mechanism of destruction of fiber-reinforced concrete with different reinforcement parameters is described. The parameters of the Concrete Damaged Plasticity model for fiber-reinforced concrete at different reinforcement properties are based on the results of lab experiments. Numerical simulation of the composite concrete was performed in the Simulia Abaqus software package (Dassault Systemes, Vélizy-Villacoublay, France). Modeling of tunnel lining based on fiber-reinforced concrete was performed under seismic loading.

scholarly journals THE INFLUENCE OF TENSILE RESISTANCE OF ULTRA HIGH STRENGTH FIBER REINFORCED CONCRETE ON FLEXURAL FAILURE

2008 ◽  
Vol 64 (3) ◽  
pp. 435-448
Author(s):  
Tetsuo KAWAGUCHI ◽  
Makoto KATAGIRI ◽  
Kazuyoshi SHIRAI ◽  
Junichiro NIWA
Keyword(s):  
Reinforced Concrete ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Flexural Failure ◽  
High Strength Fiber

Shear Behavior of RC Beams Using Ultra High Strength Fiber Reinforced Concrete Precast Formworks

2012 ◽  
Vol 18 (31) ◽  
pp. 222-229
Author(s):  
Chunyakom Sivaleepunth ◽  
Toshimichi Ichinomiya ◽  
Shinichi Yamanobe ◽  
Tetsuya Kono ◽  
Naoki Sogabe ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
High Strength ◽  
Shear Behavior ◽  
Fiber Reinforced Concrete ◽  
Rc Beams ◽  
Fiber Reinforced ◽  
High Strength Fiber

scholarly journals Nanocelluloses: Natural-Based Materials for Fiber-Reinforced Cement Composites. A Critical Review

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 518 ◽  
Author(s):  
Ana Balea ◽  
Elena Fuente ◽  
Angeles Blanco ◽  
Carlos Negro
Keyword(s):  
Raw Material ◽  
Modulus Of Rupture ◽  
Cement Matrix ◽  
Future Research ◽  
Cementitious Composites ◽  
Natural Material ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
Industrial Sectors ◽  
Reinforced Cement

Nanocelluloses (NCs) are bio-based nano-structurated products that open up new solutions for natural material sciences. Although a high number of papers have described their production, properties, and potential applications in multiple industrial sectors, no review to date has focused on their possible use in cementitious composites, which is the aim of this review. It describes how they could be applied in the manufacturing process as a raw material or an additive. NCs improve mechanical properties (internal bonding strength, modulus of elasticity (MOE), and modulus of rupture (MOR)), alter the rheology of the cement paste, and affect the physical properties of cements/cementitious composites. Additionally, the interactions between NCs and the other components of the fiber cement matrix are analyzed. The final result depends on many factors, such as the NC type, the dosage addition mode, the dispersion, the matrix type, and the curing process. However, all of these factors have not been studied in full so far. This review has also identified a number of unexplored areas of great potential for future research in relation to NC applications for fiber-reinforced cement composites, which will include their use as a surface treatment agent, an anionic flocculant, or an additive for wastewater treatment. Although NCs remain expensive, the market perspective is very promising.

scholarly journals Meso-Scale Formulation of a Cracked-Hinge Model for Hybrid Fiber-Reinforced Cement Composites

Fibers ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 56
Author(s):  
Enzo Martinelli ◽  
Marco Pepe ◽  
Fernando Fraternali
Keyword(s):  
Crack Opening ◽  
Computational Cost ◽  
Cement Matrix ◽  
Homogeneous Material ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
Reinforcing Fibers ◽  
Reinforced Cement ◽  
Displacement Based ◽  
Hinge Model

This study presents a non-linear cracked-hinge model for the post-cracking response of fiber-reinforced cementitious composites loaded in bending. The proposed displacement-based model follows a meso-mechanical approach, which makes it possible to consider explicitly the random distribution and orientation of the reinforcing fibers. Moreover, the model allows for considering two different fiber typologies whereas the cement matrix is modelled as a homogeneous material. The proposed mechanical model combines a fracture-based, stress-crack opening relationship for the cementitious matrix with generalized laws aimed to capture the crack-bridging effect played by the reinforcing fibers. These laws are derived by considering both the fiber-to-matrix bond mechanism and fiber anchoring action possibly due to hooked ends. The paper includes a numerical implementation of the proposed theory, which is validated against experimental results dealing with fiber-reinforced cement composites reinforced with different short fibers. The excellent theory vs. experiment matching demonstrates the high technical potential of the presented model, obtained at a reasonable computational cost.

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