scholarly journals Effects of Hybridized Synthetic Fibers on the Shear Properties of Cement Composites

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5055
Author(s):  
S.M. Iqbal S. Zainal ◽  
Farzad Hejazi ◽  
Farah N. A. Abd. Aziz ◽  
Mohd Saleh Jaafar
Keyword(s):  
Mechanical Properties ◽  
Synergistic Effects ◽  
Reinforced Concrete Structures ◽  
Cement Composites ◽  
Direct Shear ◽  
Hybrid Fiber ◽  
Conventional Concrete ◽  
Synthetic Fibers ◽  
Fiber Bridging ◽  
Shear Energy

The use of fibers in cementitious composites yields numerous benefits due to their fiber-bridging capabilities in resisting cracks. Therefore, this study aimed to improve the shear-resisting capabilities of conventional concrete through the hybridization of multiple synthetic fibers, specifically on reinforced concrete structures in seismic-prone regions. For this study, 16 hybrid fiber-reinforced concretes (HyFRC) were developed from the different combinations of Ferro macro-synthetic fibers with the Ultra-Net, Super-Net, Econo-Net, and Nylo-Mono microfibers. These hybrids were tested under direct shear, resulting in improved shear strength of controlled specimens by Ferro-Ultra (32%), Ferro-Super (24%), Ferro-Econo (44%), and Ferro-Nylo (24%). Shear energy was further assessed to comprehend the effectiveness of the fiber interactions according to the mechanical properties, dosage, bonding power, manufactured material, and form of fibers. Conclusively, all fiber combinations used in this study produced positive synergistic effects under direct shear at large crack deformations.

scholarly journals Study on Mechanical Properties of Polyurethane Foam Concrete

2021 ◽  
Vol 1 (1) ◽  
pp. 1-3
Author(s):  
Ramesh Gomasa
Keyword(s):  
Mechanical Properties ◽  
Low Cost ◽  
Reinforced Concrete Structures ◽  
Low Density ◽  
Foam Concrete ◽  
Conventional Concrete ◽  
Concrete Material ◽  
Foamed Concrete ◽  
Cost Of Construction ◽  
Construction Works

Foamed concrete is a special type of concrete and it can be used widely in construction of reinforced concrete structures. this study is very helpful for understanding about foamed concrete and mechanical properties of foamed concrete. Lot of researches are going on concrete material and finally we got foamed concrete. It has lot of advantages compared to conventional concrete. Fluidity and Flowability is very good in the foam concrete. It can be used for low cost of construction of structures. It has high properties and advantages compared to conventional concrete. Manufacturing and Production of poly urethane is very simple and easy. because of their low density it can be used for low-cost construction works. Weight of the concrete is also less compared to other conventional concrete.

scholarly journals Study on Mechanical Properties of Polyurethane Foam Concrete

2021 ◽  
pp. 1-3
Author(s):  
Gomasa Ramesh ◽  
Keyword(s):  
Mechanical Properties ◽  
Low Cost ◽  
Reinforced Concrete Structures ◽  
Low Density ◽  
Foam Concrete ◽  
Conventional Concrete ◽  
Concrete Material ◽  
Foamed Concrete ◽  
Cost Of Construction ◽  
Construction Works

Foamed concrete is a special type of concrete and it can be used widely in construction of reinforced concrete structures. this study is very helpful for understanding about foamed concrete and mechanical properties of foamed concrete. Lot of researches are going on concrete material and finally we got foamed concrete. It has lot of advantages compared to conventional concrete. Fluidity and Flowability is very good in the foam concrete. It can be used for low cost of construction of structures. It has high properties and advantages compared to conventional concrete. Manufacturing and Production of poly urethane is very simple and easy. because of their low density it can be used for low-cost construction works. Weight of the concrete is also less compared to other conventional concrete.

scholarly journals Comparative Study of High-Performance Concrete Characteristics and Loading Test of Pretensioned Experimental Beams

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 427
Author(s):  
Pavlina Mateckova ◽  
Vlastimil Bilek ◽  
Oldrich Sucharda
Keyword(s):  
Mechanical Properties ◽  
High Performance ◽  
High Performance Concrete ◽  
Raw Materials ◽  
Load Capacity ◽  
Materials Testing ◽  
Loading Test ◽  
Conventional Concrete ◽  
Concrete Mechanical Properties ◽  
Normal Strength

High-performance concrete (HPC) is subjected to wide attention in current research. Many research tasks are focused on laboratory testing of concrete mechanical properties with specific raw materials, where a mixture is prepared in a relatively small amount in ideal conditions. The wider utilization of HPC is connected, among other things, with its utilization in the construction industry. The paper presents two variants of HPC which were developed by modification of ordinary concrete used by a precast company for pretensioned bridge beams. The presented variants were produced in industrial conditions using common raw materials. Testing and comparison of basic mechanical properties are complemented with specialized tests of the resistance to chloride penetration. Tentative expenses for normal strength concrete (NSC) and HPC are compared. The research program was accomplished with a loading test of model experimental pretensioned beams with a length of 7 m made of ordinarily used concrete and one variant of HPC. The aim of the loading test was to determine the load–deformation diagrams and verify the design code load capacity calculation method. Overall, the article summarizes the possible benefits of using HPC compared to conventional concrete.

Effect of Ceramic Fillers on Mechanical Properties of Bamboo Fiber Reinforced Epoxy Composites: A Comparative Study

2010 ◽  
Vol 123-125 ◽  
pp. 1031-1034 ◽  
Author(s):  
Sandhyarani Biswas ◽  
Alok Satapathy ◽  
Amar Patnaik
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Red Mud ◽  
Synergistic Effects ◽  
Bamboo Fiber ◽  
Industrial Wastes ◽  
Epoxy Composites ◽  
Void Content ◽  
Filler Materials ◽  
Fiber Reinforced

In order to obtain the favoured material properties for a particular application, it is important to know how the material performance changes with the filler content under given loading conditions. In this study, a series of bamboo fiber reinforced epoxy composites are fabricated using conventional filler (aluminium oxide (Al2O3) and silicon carbide (SiC) and industrial wastes (red mud and copper slag) particles as filler materials. By incorporating the chosen particulate fillers into the bamboo-fiber reinforced epoxy, synergistic effects, as expected are achieved in the form of modified mechanical properties. Inclusion of fiber in neat epoxy improved the load bearing capacity (tensile strength) and the ability to withstand bending (flexural strength) of the composites. But with the incorporation of particulate fillers, the tensile strengths of the composites are found to be decreasing in most of the cases. Among the particulate filled bamboo-epoxy composites, least value of void content are recorded for composites with silicon carbide filling and for the composites with glass fiber reinforcement minimum void fraction is noted for red mud filling. The effects of these four different ceramics on the mechanical properties of bamboo- epoxy composites are investigated and the conclusions drawn from the above investigation are discussed.

Preparation and Mechanical Properties of Polyethylene-Portland Cement Composites

2009 ◽  
Vol 1242 ◽  
Author(s):  
Rivas-Vázquez L.P. ◽  
Suárez-Orduña R. ◽  
Valera-Zaragoza M. ◽  
Máas-Díaz A. De la L. ◽  
Ramírez-Vargas E.
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Portland Cement ◽  
Plastic Waste ◽  
Cement Composites ◽  
Compression Tests ◽  
Standard Samples ◽  
Cement Ratio ◽  
Reinforcing Fibers ◽  
Waste Polyethylene

ABSTRACTThe effects of waste polyethylene aggregate as admixture agent in Portland cement at different addition polyethylene/cement ratios from 0.0156 to 0.3903 were investigated. The reinforced samples were prepared according the ASTM C 150 Standard (samples of 5 × 5 × 5 cm). The reinforcing fibers were milling at a size of 1/25 in diameter, form waste and used them to evaluate the effects in mechanical properties in cement-based composites. The evaluation of polyethylene as additive was based on results of density and compression tests. The 28-day compressive strength of cement reforced with plastic waste at a replacement polyethylene/cement ratio of 0.0468 was 23.5 MPa compared to the control concrete (7.5 MPa). The density of cement replaced with polyethylene varies from 2.114 (0% polyethylene) to 1.83 g/cm3 by the influence of polyethylene.

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