Mechanical Performance and Microstructure of High Strength Concrete Using Nano-Silica

2021 ◽  
pp. 781-792
Author(s):  
Syed Danish Hasan ◽  
Mohd Moonis Zaheer ◽  
Amman Ahmad
Keyword(s):  
High Strength Concrete ◽  
Mechanical Performance ◽  
High Strength ◽  
Nano Silica ◽  
Strength Concrete

Application of Inorganic Cohesive Glue in Concrete Repair

2010 ◽  
Vol 168-170 ◽  
pp. 945-948
Author(s):  
Shu Hua Liu
Keyword(s):  
High Strength Concrete ◽  
Mechanical Performance ◽  
High Strength ◽  
Concrete Repair ◽  
Repair Work ◽  
Strength Concrete ◽  
Original Specimen ◽  
Better Than

The properties of inorganic cohesive glue and its appliance to repairing ordinary and high strength concrete were studied in this paper. Inorganic cohesive glue not only has high strength, but also has equivalent coefficient of expansion with that of concrete and steel. The mechanical performance of inorganic cohesive glue is better than that of concrete, and other performances are similar to those of concrete. In the concrete repair work, it can mend the ruinate concrete well, and the strength of the repaired concrete is as high as or higher than that of original specimen.

scholarly journals Determination of time zero in high strength concrete containing superabsorbent polymer and nano-silica

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
T. A. Cunha ◽  
P. Francinete ◽  
M. A. Manzano ◽  
L. A. Aidar ◽  
J. G. Borges ◽  
...  
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Superabsorbent Polymer ◽  
Nano Silica ◽  
Strength Concrete ◽  
Time Zero

Experimental Research on Physical and Mechanical Properties of Steel Fiber High-Strength Concrete

2010 ◽  
Vol 168-170 ◽  
pp. 1061-1064 ◽  
Author(s):  
Yu Dong Wang ◽  
Xiao Chun Fan
Keyword(s):  
High Strength Concrete ◽  
Bending Strength ◽  
Steel Fiber ◽  
Mechanical Performance ◽  
Physical And Mechanical Properties ◽  
Drying Shrinkage ◽  
High Strength ◽  
Engineering Practice ◽  
Strength Concrete ◽  
Mix Proportion

Based on experiment, the mix proportion matching with the design and construction requirements is obtained. It meets with the requirement of pump structure on the basis of meeting the strength requirement. On this basis, the basic physical and mechanical performance is studied and the conclusion is that steel fiber high-strength concrete has excellent resistance to splitting, bending and drying shrinkage. The splitting strength and bending strength of steel fiber high-strength concrete named CF60-2 is respectively 38.7% and 56.8% higher than that of plane concrete named C60. The drying shrinkage rate of CF60-2 is 45.5% lower than that of C60 in three days. The results have an important guiding significance to steel fiber high-strength concrete in theoretical and engineering practice.

scholarly journals Study on Mix Proportion Optimization of C50 High Strength Concrete

2021 ◽  
Vol 2101 (1) ◽  
pp. 012068
Author(s):  
Yunhua Wang ◽  
Fanji Cai ◽  
Qiong Wang ◽  
Dongfeng Li ◽  
Pan Guo
Keyword(s):  
Fly Ash ◽  
High Strength Concrete ◽  
Mechanical Performance ◽  
High Strength ◽  
Economic Costs ◽  
Engineering Technology ◽  
Strength Concrete ◽  
Mix Proportion ◽  
C 50 ◽  
Selection Of

Abstract With the progress of engineering technology, C50 high-strength coagulation came into being for the needs of actual engineering. This research mainly focuses on the selection of cement varieties and admixtures of C 50 high-strength concrete, so as to realize the optimization research of the mix ratio of C 50 high-strength concrete. The results show that ordinary P.O 42.5 and fly ash admixture can increase the mechanical performance of concrete. However, the concrete compressive strength with the mixed admixture of fly ash and mineral powder is even lower than that without any admixture. On the premise of meeting actual engineering needs, the optimization of the mix ratio of high-strength concrete can not only achieve sustainable development, but also save investment in project economic costs.

Performance of sustainable high strength concrete with basic oxygen steel-making (BOS) slag and nano-silica

2019 ◽  
Vol 25 ◽  
pp. 100791 ◽  
Author(s):  
Seyed Alireza Zareei ◽  
Farshad Ameri ◽  
Nasrollah Bahrami ◽  
Parham Shoaei ◽  
Hamid Reza Moosaei ◽  
...  
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Nano Silica ◽  
Basic Oxygen ◽  
Strength Concrete ◽  
Steel Making

scholarly journals Effects of Plastic Waste on the Heat-Induced Spalling Performance and Mechanical Properties of High Strength Concrete

Materials ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3262
Author(s):  
Abrahão Bernardo Rohden ◽  
Jessica Regina Camilo ◽  
Rafaela Cristina Amaral ◽  
Estela Oliari Garcez ◽  
Mônica Regina Garcez
Keyword(s):  
Mechanical Properties ◽  
High Strength Concrete ◽  
Mechanical Performance ◽  
High Strength ◽  
Plastic Waste ◽  
Polypropylene Fibers ◽  
Strength Concrete ◽  
Polymer Melting ◽  
Computed Tomography Images ◽  
X Ray Computed

This paper investigates a potential application of hard-to-recycle plastic waste as polymeric addition in high strength concrete, with a focus on the potential to mitigate heat-induced concrete spalling and the consequent effects on the mechanical properties. The waste corresponds to soft and hard plastic, including household polymers vastly disposed of in landfills, although technically recyclable. Mechanical and physical properties, cracking, mass loss, and the occurrence of spalling were assessed in high strength concrete samples produced with either plastic waste or polypropylene fibers after 2-h exposure to 600 °C. The analysis was supported by Scanning Electron Microscopy and X-Ray Computed Tomography images. The plastic waste is composed of different polymers with a thermal degradation between 250 to 500 °C. Polypropylene (PP) fibers and plastic waste dispersed in concrete have proved to play an essential role in mitigating heat-induced concrete spalling, contributing to the release of internal pressure after the polymer melting. The different morphology of plastic waste and polypropylene fibers leads to distinct mechanisms of action. While the vapor pressure dissipation network originated by polypropylene fibers is related to the formation of continuous channels, the plastic waste seems to cause discontinuous reservoirs and fewer damages into the concrete matrix. The incorporation of plastic waste improved heat-induced concrete spalling performance. While 6 kg/m3 of plastic increased the mechanical performance after exposure to high temperature, the incorporation of 3 kg/m3 resulted in mechanical properties comparable to the reference concrete.

Mechanical performance of high strength concrete made from high volume of Metakaolin and hybrid fibers

2017 ◽  
Vol 140 ◽  
pp. 203-209 ◽  
Author(s):  
Hamdy K. Shehab El-Din ◽  
Ahmed S. Eisa ◽  
Baligh H. Abdel Aziz ◽  
Ahmed Ibrahim
Keyword(s):  
High Strength Concrete ◽  
Mechanical Performance ◽  
High Strength ◽  
High Volume ◽  
Hybrid Fibers ◽  
Strength Concrete
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