Effect of fiber content and stress–strength ratio on the creep of basalt fiber–reinforced alkali‐activated slag concrete

2021 ◽  
Author(s):  
Xianyu Zhou ◽  
Wenzhong Zheng ◽  
Yusheng Zeng ◽  
Chonghao Xu ◽  
Pang Chen
Keyword(s):  
Basalt Fiber ◽  
Fiber Content ◽  
Strength Ratio ◽  
Fiber Reinforced ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated

scholarly journals Impacts of Casting Scales and Harsh Conditions on the Thermal, Acoustic, and Mechanical Properties of Indoor Acoustic Panels Made with Fiber-Reinforced Alkali-Activated Slag Foam Concretes

Materials ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 825 ◽  
Author(s):  
Mastali Mohammad ◽  
Kinnunen Paivo ◽  
Karhu Marjaana ◽  
Abdollahnejad Zahra ◽  
Korat Lidija ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Comparative Study ◽  
Sound Absorption ◽  
Acoustic Properties ◽  
Recycled Aggregates ◽  
Fiber Reinforced ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Harsh Conditions ◽  
Alkali Activated

This paper presents experimental results regarding the efficiency of using acoustic panels made with fiber-reinforced alkali-activated slag foam concrete containing lightweight recycled aggregates produced by using Petrit-T (tunnel kiln slag). In the first stage, 72 acoustic panels with dimension 500 × 500 × 35 mm were cast and prepared. The mechanical properties of the panels were then assessed in terms of their compressive and flexural strengths. Moreover, the durability properties of acoustic panels were studied using harsh conditions (freeze/thaw and carbonation tests). The efficiency of the lightweight panels was also assessed in terms of thermal properties. In the second stage, 50 acoustic panels were used to cover the floor area in a reverberation room. The acoustic absorption in diffuse field conditions was measured, and the interrupted random noise source method was used to record the sound pressure decay rate over time. Moreover, the acoustic properties of the panels were separately assessed by impedance tubes and airflow resistivity measurements. The recorded results from these two sound absorption evaluations were compared. Additionally, a comparative study was presented on the results of impedance tube measurements to compare the influence of casting volumes (large and small scales) on the sound absorption of the acoustic panels. In the last stage, a comparative study was implemented to clarify the effects of harsh conditions on the sound absorption of the acoustic panels. The results showed that casting scale had great impacts on the mechanical and physical properties. Additionally, it was revealed that harsh conditions improved the sound properties of acoustic panels due to their effects on the porous structure of materials.

scholarly journals Stress-Strain Relationship of Steel Fiber Reinforced Alkali Activated Slag Concrete under Static Compression

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xiaohui Yuan ◽  
Huiting Guan ◽  
Yanyu Shi
Keyword(s):  
Damage Evolution ◽  
Steel Fiber ◽  
Strain Curve ◽  
Fiber Reinforced ◽  
Stress Strain Curve ◽  
Stress Strain ◽  
Alkali Activated Slag ◽  
Strain Relationship ◽  
Activated Slag ◽  
Alkali Activated

Stress-strain curve can accurately reflect the mechanical behavior of materials, and it is very important for structural design and nonlinear numerical analysis. Some cube and prism specimens were made to investigate the physical and mechanical properties of steel fiber reinforced alkali activated slag concrete (AASC); test results show that the strength, Young’s Elastic Modulus, and Poisson’s ratio all increase with the increase of steel fiber content. The steel fiber reinforced AASC shows an excellent postcracking behavior. Damage evolution parameter (D) was used to describe the formation and propagation of cracks, and continuum damage evolution model of steel fiber reinforced AASC was established by Weibull and Cauchy distribution. The establishing model can well describe the geometric characteristics of the key points of the concrete materials stress-strain curve. Finally, the accuracy of the model was verified by comparing the test stress-strain relationship curve of steel fiber reinforced AASC.

scholarly journals Effects of Aging on the Tensile Properties of Polyethylene Fiber-Reinforced Alkali-Activated Slag-Based Composite

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Jeong-Il Choi ◽  
Se-Eon Park ◽  
Su-Tae Kang ◽  
Bang Yeon Lee
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Tensile Properties ◽  
Fiber Reinforced ◽  
Alkali Activated Slag ◽  
Polyethylene Fiber ◽  
Activated Slag ◽  
Effects Of Aging ◽  
Effect Of Age ◽  
Alkali Activated

Information on the effect of age on the tensile behavior of fiber-reinforced alkali-activated slag-based composite is fairly limited. Therefore, the purpose of this study is to experimentally investigate the effect of age on the compressive strength and tensile properties of the fiber-reinforced alkali-activated slag-based composite. A binder including slag and alkali activators, chemical admixtures, and a reinforcing fiber were selected, and the mixture proportion was determined to make a fiber-reinforced alkali-activated slag-based composite with high ductility. Compressive strength and tensile strength tests were performed, and values were measured at 3, 5, 7, 14, 28, and 90 days. Test results showed that the compressive strength increased as the age increased. Although the first-cracking strength increased like the compressive strength, the increases of tensile strength and tensile strain capacity were not significant compared with those of compressive strength and first-cracking strength.

scholarly journals High strength fiber reinforced one-part alkali activated slag composites from industrial side streams

2022 ◽  
Vol 319 ◽  
pp. 126124
Author(s):  
Priyadharshini Perumal ◽  
Hoang Nguyen ◽  
Valter Carvelli ◽  
Paivo Kinnunen ◽  
Mirja Illikainen
Keyword(s):  
High Strength ◽  
Fiber Reinforced ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
High Strength Fiber ◽  
Alkali Activated
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