Experimental investigation on hysteric loading characteristics of fly ash as fractional substitute of cement in reinforced concrete beam‐column connection at curing of 90 days

2021 ◽  
Author(s):  
Sayan Kumar Shaw ◽  
Satyaki Ghosh ◽  
Abhijeet Dey ◽  
Arjun Sil
Keyword(s):  
Experimental Investigation ◽  
Reinforced Concrete ◽  
Fly Ash ◽  
Concrete Beam ◽  
Reinforced Concrete Beam

Application of Fly Ash-Based Geopolymer for Structural Member and Repair Materials

2014 ◽  
Vol 92 ◽  
pp. 74-83 ◽  
Author(s):  
Wanchai Yodsudjai
Keyword(s):  
Reinforced Concrete ◽  
Fly Ash ◽  
Concrete Beam ◽  
Setting Time ◽  
Reinforced Concrete Beam ◽  
Structural Member ◽  
Steel Reinforcement ◽  
Flexural Behavior ◽  
Fundamental Properties ◽  
Repair Materials

The applications of using fly ash-based geopolymer as a structural member and a repair materials in reinforced concrete structure was conducted. The optimum mix proportion of fly ash-based geopolymer concrete using for structural beam and fly ash-based geopolymer mortar using for repair material were developed. The flexural behavior of fly ash-based geopolymer reinforced concrete and the durability aspect namely the corrosion of steel reinforcement were investigated using the electrical acceleration. For the repair purpose, the fundamental properties; that is, compressive strength, flexural strength, bonding strength between fly ash-based geopolymer mortar and mortar substrate, setting time and chloride penetration were investigated. Also, the durability of conventional reinforced concrete beam repaired by the fly ash-based geopolymer mortar comparing with the comercial repair mortar was investigated. The behavior of the fly ash-based geopolymer reinforced concrete beam was similar to that of the conventional reinforced concrete beam; however, the corrosion of the steel reinforcement of the fly ash-based geopolymer reinforced concrete beam was higher than that of the conventional reinforced concrete beam. The fundamental properties of the fly ash-based geopolymer mortar were not different from that of the commercial repair materials; however, the durability of the reinforced concrete beam repaired by the fly ash-based geopolymer mortars performed a little lower than that of repaired with the commercial repair motar and also the control reinforced concrete with no repair. As a result, even there will be still a need of improvement there was a good tendency for using the fly ash-based geopolymer as the structural member and the repair materials.

scholarly journals Evaluation of Shear-Critical Reinforced Concrete Beam Blended with Fly Ash

2020 ◽  
Vol 506 ◽  
pp. 012041 ◽  
Author(s):  
M Mooy ◽  
A Tambusay ◽  
I Komara ◽  
W Sutrisno ◽  
Faimun ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Fly Ash ◽  
Concrete Beam ◽  
Reinforced Concrete Beam

scholarly journals Flexural performance of reinforced concrete beams made with locally sourced fly ash

2021 ◽  
Vol 15 (2) ◽  
pp. 38-50
Author(s):  
Nguyen Van Chinh
Keyword(s):  
Reinforced Concrete ◽  
Fly Ash ◽  
Portland Cement ◽  
Concrete Beam ◽  
Concrete Beams ◽  
Reinforced Concrete Beam ◽  
Reinforced Concrete Beams ◽  
Flexural Performance ◽  
Steel Bars ◽  
Cracking Pattern

The paper investigates the flexural performance of reinforced concrete beams in which fly ash from Vinh Tan power station was used to replace original Portland cement in the proportions of 0%, 10%, 20% and 40% by weight. Twelve reinforced concrete beams with the dimensions of 100×150 mm in cross section and 1000 mm in length were cast and cured in water. These beams were flexurally tested under 4 points bending at 28 days, 56 days and 90 days. Load deflection curves, first cracking load, yielding of steel bars, ultimate load, and cracking pattern of the reinforced concrete beams are used to investigate the performance of the control and fly ash beams at 28 days, 56 days and 90 days. The results show that locally sourced fly ash does not affect the load and deflection curves. Fly ash reduced slightly the flexural strength of reinforced concrete beams at 90 days when 40% of fly ash was used to replaced Portland cement. Keywords: fly ash; reinforced concrete beam; flexural performance; load; deflection.

scholarly journals Structural Behaviour Fly ash and Ferrochrome ash Based Geopolymer Concrete with Recycled Aggregate

2019 ◽  
Vol 8 (4) ◽  
pp. 9329-9335
Keyword(s):  
Reinforced Concrete ◽  
Fly Ash ◽  
Carbon Footprint ◽  
Concrete Beam ◽  
Coarse Aggregate ◽  
Reinforced Concrete Beam ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Geopolymer Concrete ◽  
Structural Behaviour

Recycled aggregates are the construction demolition wastes which can be used in concrete industry to reduce the carbon footprint of the environment. This paper deals with the structural behaviour of reinforced concrete beam made with different percentages of recycled aggregate as coarse aggregate on a novel geopolymer concrete consist of fly ash and ferrochrome ash as binder. Structural behaviour of RCC beam with 10% and 20% recycled aggregate in geopolymer concrete are studied and compared to the 100% natural coarse aggregate. Experimental results revealed that the up to 10% replacement of recycled aggregate can achieve strength equal to control concrete and it can be the recommended percentage of RCA for concrete industry.

Sign in / Sign up

Export Citation Format

Share Document