scholarly journals The Flexural Strength of Concrete Panels with Crystalline Ceramic Waste Aggregates

2020 ◽  
Vol 9 (3) ◽  
pp. 4122-4126
Keyword(s):  
Flexural Strength ◽  
Environmental Pollution ◽  
Test Method ◽  
Normal Concrete ◽  
Three Point Bending ◽  
Ceramic Waste ◽  
Concrete Panels ◽  
Panel Testing ◽  
Simple Support ◽  
Crystalline Ceramic

Increased development has an impact on increasing material requirements and environmental pollution due to waste. Material needs must consider the energy-saving aspects and the thought of useless material to be useful, one of which is a crystalline ceramic waste. The crystalline ceramic waste is very sharp and hard. The utilization of crystalline ceramic waste as a concrete panel material is very important to reduce environmental pollution. The purpose of this research was to utilize crystalline ceramic waste as a concrete panel material and test its flexural capacity. Panel testing was carried out on specimens measuring 30 mm x 400 mm x 800 mm assuming the panel as a deep beam on simple support. Testing is done by a three-point bending flexural test method. Loading is carried out monotonically until the panel collapses. From the results of the ceramic concrete panel test showed that the flexural strength increased by 31.89% compared to the flexural strength of normal concrete panels.

Relationship between Fiber Orientation and Flexural Strength in Ultra-High-Performance Fiber-Reinforced Concrete Panels

2014 ◽  
Vol 629-630 ◽  
pp. 71-78 ◽  
Author(s):  
Bo Zhou ◽  
Yuichi Uchida
Keyword(s):  
Reinforced Concrete ◽  
Flexural Strength ◽  
Fiber Orientation ◽  
High Performance ◽  
Fiber Reinforced Concrete ◽  
Bending Test ◽  
Fiber Reinforced ◽  
Three Point Bending ◽  
Concrete Panels ◽  
High Performance Fiber

In this study, the influence of fiber orientation on the flexural strength of ultra-high-performance fiber-reinforced concrete (UHPFRC) was examined. To this end, a circular UHPFRC panel measuring φ1,200 × 50 mm was cast from its center, and test specimens measuring 50 × 50 × 200 mm with 10 mm notches for three-point bending tests were cut from it with angles of 0, 30, 60 and 90° between the specimen axis and the radial direction of the panel. After the bending test, fiber orientation on the ruptured surfaces of the specimens was observed. The flexural strengths of the specimens cut at angles of 60, 30 and 0° were 80, 40 and 10% of that for the specimen cut at an angle of 90°. It was also found that the flexural strength of specimens cut from a rectangular panel cast from its center point depended on their original positions and orientation within the panel. Similar fiber orientation characteristics were found in the circular and rectangular panels.

scholarly journals Influence of the Sintering Type in Ceramics Blocks for Cad-Cam

2016 ◽  
Vol 18 (2) ◽  
pp. 91
Author(s):  
Martín Kreisler DDS, MSc, PhD ◽  
Osmir Oliveira DDS, MSc, PhD
Keyword(s):  
Solid State ◽  
Flexural Strength ◽  
Liquid State ◽  
Hardness Test ◽  
Test Method ◽  
Bending Test ◽  
Three Point Bending ◽  
Cad Cam ◽  
Ceramic Blocks ◽  
State Group

The aim of this study was to characterize the influence of the sintering type in the flexural strength and hardness of ceramic blocks for CAD-CAM.  Four type of ceramic blocks were selected and distributed according to the  type of sintering to be performed: Group G1 - In-Ceram® Alumina / liquid state; Group G2 - In-Ceram® AL / solid state; Group G3 - In-Ceram® Zircon / liquid state; Group G4 - In-Ceram® YZ / solid state. All blocks were cut in bar shape with dimensions of 25 x 5 x 2 mm.  and submitted to the three-point bending test and to the Vickers hardness test method.  The results, after statistical analysis, showed  that the average flexural strength of group G1 (351.7 MPa) and group G3 (356.3 MPa) were significantly lower than those of group G2 (421.9 MPa) and group G4 (758.4 MPa); as well as all hardness averages were significantly different, being higher for group G2 (1.936,6 HV) and group G4 (1.321,4 HV), when compared to group G1 (1.173,3 HV) and group G3 (1.094,6 HV).  It was concluded that the solid state sintering proved to be more efficient to obtain maximum densification of the ceramics blocks, resulting in high values of flexural strength and hardness.

scholarly journals Effect of Ceramic Waste Aggregate in Concrete to Reduce Environmental Pollution

2019 ◽  
Vol 9 (2) ◽  
pp. 3112-3117
Keyword(s):  
Environmental Pollution ◽  
Partial Replacement ◽  
Concrete Aggregate ◽  
Normal Concrete ◽  
Concrete Aggregates ◽  
Ceramic Waste ◽  
A Value ◽  
Compressive Strength Test ◽  
Aggregate Material ◽  
Percentage Porosity

The utilization of ceramic waste is one solution to reduce environmental pollution due to development waste. The aim of this study was to utilize ceramic waste as a concrete aggregate material. The test consisted of the mechanical properties test of ceramic waste aggregates and the compressive strength test of ceramic concrete. The variation of normal aggregate partial replacement with the aggregate of CWA is 0%, 25%, 50%, 75%, and 100%. The total number of specimens is 50 cylinders. From the results of material testing and ceramic concrete tests showed that ceramic waste aggregate can be used as concrete aggregates, especially for elements that accept compressive forces, shear forces, and in-plane forces. The X-ray test shows that CWA aggregate is not pozzolanic, so it can be used as a concrete aggregate to reduce environmental pollution. The percentage porosity of ceramic concrete is smaller than the porosity of normal concrete. The effect of partial replacement of normal aggregate with the CWA aggregate in concrete optimum at a value of 55% CWA aggregate.

scholarly journals Influence of the Sintering Type in Ceramics Blocks for Cad-Cam

2016 ◽  
Vol 18 (2) ◽  
pp. 91
Author(s):  
Martín Kreisler DDS, MSc, PhD ◽  
Osmir Oliveira DDS, MSc, PhD
Keyword(s):  
Solid State ◽  
Flexural Strength ◽  
Liquid State ◽  
Hardness Test ◽  
Test Method ◽  
Bending Test ◽  
Three Point Bending ◽  
Cad Cam ◽  
Ceramic Blocks ◽  
State Group

The aim of this study was to characterize the influence of the sintering type in the flexural strength and hardness of ceramic blocks for CAD-CAM.  Four type of ceramic blocks were selected and distributed according to the  type of sintering to be performed: Group G1 - In-Ceram® Alumina / liquid state; Group G2 - In-Ceram® AL / solid state; Group G3 - In-Ceram® Zircon / liquid state; Group G4 - In-Ceram® YZ / solid state. All blocks were cut in bar shape with dimensions of 25 x 5 x 2 mm.  and submitted to the three-point bending test and to the Vickers hardness test method.  The results, after statistical analysis, showed  that the average flexural strength of group G1 (351.7 MPa) and group G3 (356.3 MPa) were significantly lower than those of group G2 (421.9 MPa) and group G4 (758.4 MPa); as well as all hardness averages were significantly different, being higher for group G2 (1.936,6 HV) and group G4 (1.321,4 HV), when compared to group G1 (1.173,3 HV) and group G3 (1.094,6 HV).  It was concluded that the solid state sintering proved to be more efficient to obtain maximum densification of the ceramics blocks, resulting in high values of flexural strength and hardness.

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