Effect of waste foundry sand and glass fiber on mechanical properties and fire resistance of high-strength concrete

2020 ◽  
Vol 33 ◽  
pp. 1733-1740
Author(s):  
Amrullah Abdul Rahim Zai ◽  
Sandeep Salhotra
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Fire Resistance ◽  
High Strength Concrete ◽  
High Strength ◽  
Foundry Sand ◽  
Strength Concrete ◽  
Waste Foundry Sand

Behavior of Densified Normal Strength Concrete under Elevated Temperature

2009 ◽  
Vol 405-406 ◽  
pp. 405-408 ◽  
Author(s):  
Bo Ming Zhao ◽  
Gai Fei Peng ◽  
Ting Yu Hao
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Fire Resistance ◽  
High Strength Concrete ◽  
High Strength ◽  
Polymer Fiber ◽  
Normal Strength Concrete ◽  
Strength Concrete ◽  
Normal Strength ◽  
Spalling Test

This paper presents an experimental investigation on fire resistance of densified normal strength concrete (DNSC), at water/binder (W/B) ratios of 0.45, 0.36, and 0.32, of which compressive strength of 28-days ranged from 42.5 MPa to 56.3 MPa. The results of the spalling test reveal that DNSC encountered explosive under high temperature. Polymer fiber can be used to improve fire resistance of DNSC. DNSC subjected to high temperature lost its mechanical properties in a similar manner to that of high-strength concrete.

Re-usage of waste foundry sand in high-strength concrete

2010 ◽  
Vol 30 (8-9) ◽  
pp. 1705-1713 ◽  
Author(s):  
Yucel Guney ◽  
Yasin Dursun Sari ◽  
Muhsin Yalcin ◽  
Ahmet Tuncan ◽  
Senayi Donmez
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Foundry Sand ◽  
Strength Concrete ◽  
Waste Foundry Sand

scholarly journals MECHANICAL PROPERTIES OF HIGH STRENGTH CONCRETE AT HIGH TEMPERATURES

2008 ◽  
Vol 73 (624) ◽  
pp. 341-347 ◽  
Author(s):  
Masashi MATSUDO ◽  
Hirokazu NISHIDA ◽  
Takahiro OHTSUKA ◽  
Takeo HIRASHIMA ◽  
Takeo ABE
Keyword(s):  
Mechanical Properties ◽  
High Temperatures ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete

Comparison Analysis on the Mechanical Properties of HSC and NSC after the Action of High Temperatures

2014 ◽  
Vol 1014 ◽  
pp. 49-52
Author(s):  
Xiao Ping Su
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
High Temperatures ◽  
High Strength Concrete ◽  
Elasticity Modulus ◽  
Strain Curve ◽  
Peak Stress ◽  
High Strength ◽  
Peak Strain ◽  
Strength Concrete

With the wide application of high strength concrete in the building construction,the risk making concrete subject to high temperatures during a fire is increasing. Comparison tests on the mechanical properties of high strength concrete (HSC) and normal strength concrete (NSC) after the action of high temperature were made in this article, which were compared from the following aspects: the peak stress, the peak strain, elasticity modulus, and stress-strain curve after high temperature. Results show that the laws of the mechanical properties of HSC and NSC changing with the temperature are the same. With the increase of heating temperature, the peak stress and elasticity modulus decreases, while the peak strain grows rapidly. HSC shows greater brittleness and worse fire-resistant performance than NSC, and destroys suddenly. The research and evaluation on the fire-resistant performance of HSC should be strengthened during the structural design and construction on the HSC buildings.

scholarly journals Effect of Locally Available Wheat Straw Ash in Developing High Strength Concrete

2021 ◽  
pp. 19-28
Author(s):  
Muhammad Armaghan Siffat ◽  
Muhammad Ishfaq ◽  
Afaq Ahmad ◽  
Khalil Ur Rehman ◽  
Fawad Ahmad
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Wheat Straw ◽  
High Strength Concrete ◽  
High Strength ◽  
Optimum Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Strength Concrete ◽  
Straw Ash

This study is supervised to assess the characteristics of the locally available wheat straw ash (WSA) to consume as a substitute to the cement and support in enhancing the mechanical properties of concrete. Initially, after incineration at optimum temperature of 800°C for 0.5, the ash of wheat straw was made up to the desirable level of fineness by passing through it to the several grinding cycles. Subsequently, the X-ray fluorescence (XRF) along with X-ray diffraction (XRD) testing conducted on ash of wheat straw for the evaluation its pozzolanic potential. Finally, the specimens of concrete were made by consuming 10% and 20% percentages of wheat straw ash as a replacement in concrete to conclude its impact on the compressive strength of high strength concrete. The cylinders of steel of dimensions 10cm diameter x 20cm depth were acquired to evaluate the compressive strength of high strength concrete. The relative outcomes of cylinders made of wheat straw ash substitution presented the slight increase in strength values of the concrete. Ultimately, the C-100 blends and WSA aided cement blends were inspected for the rheology of WSA through FTIR spectroscopy along with Thermogravimetric technique. The conclusions authenticate the WSA potential to replace cement in the manufacturing of the high strength concrete.

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