Steel fibre reinforced alkali-activated geopolymer concrete slabs subjected to natural gas explosion in buried utility tunnel

Meng, Qingfei; Wu, Chengqing; Hao, Hong; Li, Jun; Wu, Pengtao; Yang, Yekai; Wang, Zhongqi

doi:10.1016/j.conbuildmat.2020.118447

Cited by 65 publications

(17 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In another example of a structural application of an AABC based on a FA/ GGBFS calcium-rich binder, Meng et al (2020) analyzed the response of slabs composed of this material to a natural gas explosion. In relation to the components of the mixture, and besides the inclusion of the FA/GGBFS matrix, the researchers also added silica fumes to the binder.…”

Section: Ggbfs and Fa As Precursorsmentioning

confidence: 99%

Structural performance of waste-based reinforced alkali-activated concrete

Miraldo

Lopes

Pacheco-Torgal

et al. 2022

Handbook of Advances in Alkali-Activated Concrete

View full text Add to dashboard Cite

Section: Ggbfs and Fa As Precursorsmentioning

confidence: 99%

Structural performance of waste-based reinforced alkali-activated concrete

Miraldo

Lopes

Pacheco-Torgal

et al. 2022

Handbook of Advances in Alkali-Activated Concrete

View full text Add to dashboard Cite

“…The geopolymer concrete beam-column joints were tested to have better ductility, greater energy absorptivity, and higher toughness with the inclusion of steel fibers. Since steel-fiber-reinforced alkali-activated geopolymer concrete can achieve higher mechanical performance and produce less carbon emission as compared to the conventional concrete, it is considered to be a potential construction material solution for the buried tunnel subjected to gas explosion threatening [ 26 ]. In another study, Alrshoudi et al [ 27 ] added glass and carbon-fiber-reinforced polymers to high-strength geopolymer concrete to enhance its compressive strength and ductility.…”

Section: Introductionmentioning

confidence: 99%

Durability Performance of Geopolymer Concrete: A Review

Wong

2022

Polymers

View full text Add to dashboard Cite

Geopolymer concrete is produced from the geopolymerization process, in which molecules known as oligomers integrate to form geopolymer networks with covalent bonding. Its production expends less thermal energy and results in a smaller carbon footprint compared to Ordinary Portland Cement (OPC) concrete. It requires only an alkaline activator to catalyze its aluminosilicate sources such as metakaolin and fly ash, to yield geopolymer binder for the geopolymerization to take place. Because of its eco-friendly technology and practical application, current research interest is mainly concentrated on the endurance of geopolymer concrete to resist heat and chemical aggressions. As such, it is pertinent for this review article to provide critical insight into the recent progress in research on the durability of geopolymer concrete. One significant outcome of the review is that the admixture of geopolymer concrete could be blended with additives such as micro-silica and fibers such as polypropylene fibers, to enhance its durability. The review on the durability aspects of geopolymer concrete showed that it had high compressive strength at an optimal elevated temperature, low to medium chloride ion penetrability, and high resistance to acid attack and abrasion. This makes geopolymer concrete a viable candidate to replace OPC concrete in the construction industry.

show abstract

“…With the overexploitation of fossil energy and the increasingly grave environmental problems, natural gas, as an alternative clean energy, has been widely used in industrial production and daily life. − The main component of natural gas is methane, accounting for about 85%. , However, methane is also flammable and explosive with a minimum ignition energy of 0.3 mJ . Therefore, in the processes of chemical production, storage, transportation, and utilization, when a gas leak occurs, it is extremely easy to cause gas explosions, and even induce more severe secondary explosions and multiple explosion accidents, which would result in huge economic and property losses, and personal casualties. − Among them, environmental parameters after explosions are a prerequisite for evoking secondary explosions . To prevent, weaken, and investigate derivative disasters such as secondary explosions, it is necessary to conduct in-depth research on the variation of environmental parameters of gas explosions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ignition Energy on Environmental Parameters of Gas Explosion in Semiclosed Pipeline

Qiao

Min

et al. 2022

ACS Omega

View full text Add to dashboard Cite

In the processes of chemical production, storage, transportation, and utilization, when a gas explosion occurs, the postexplosion environmental parameters (environmental pressure, environmental temperature, and environmental humidity) are significant prerequisites for inducing secondary explosions and other derivative disasters. To investigate the variation and explore the influence of the law of ignition energy on gas explosions, experiments in a semiclosed pipeline under different ignition energies were performed. The results showed that there appeared a relatively obvious air backflow phenomenon at the opening end of the pipeline after gas explosions. The response relationship between the environmental pressure peak and ignition energy fit better with the linear function. Ignition energy had a comparatively large impact on environmental temperature. More specifically, when the ignition power was 275 W, the beginning moment of rise of the temperature was the earliest, the pressure rise rate was the fastest, the temperature peak was the highest, and the temperature rise range after explosions was the largest, respectively, 3.05 s, 14.3 °C/s, 32.8 °C, and 8.66%. However, there was no strong causal relationship between ignition energy and environmental humidity. The research contributes to understanding the changing tendencies of environmental parameters during the whole process of gas explosions and analyzes the effect law of ignition energy on environmental parameters. Meanwhile, it can provide support to prevent and weaken secondary explosions and other derivative disasters and improve the safety production capacity of the chemical industry.

show abstract

Steel fibre reinforced alkali-activated geopolymer concrete slabs subjected to natural gas explosion in buried utility tunnel

Cited by 65 publications

References 48 publications

Structural performance of waste-based reinforced alkali-activated concrete

Structural performance of waste-based reinforced alkali-activated concrete

Durability Performance of Geopolymer Concrete: A Review

Effect of Ignition Energy on Environmental Parameters of Gas Explosion in Semiclosed Pipeline

Contact Info

Product

Resources

About