Flame retarding and smoke suppressing mechanisms of nano composite flame retardants on bitumen and bituminous mixture

Xia, Wenjing; Wang, Siwen; Xu, Tao; Jin, Guanglai

doi:10.1016/j.conbuildmat.2020.121203

Cited by 27 publications

(6 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Commercially available passive fire protection materials include cementitious coating mortar (i.e., perlite cement), fire retarder (ammonium polyphosphate), intumescent paints, fiber garment wrapping (i.e., aramid fiber), polymer-modified bitumen, etc. [ 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Use of Cement Mortar Incorporating Superabsorbent Polymer as a Passive Fire-Protective Layer

et al. 2022

View full text Add to dashboard Cite

Concrete structures, when exposed to fire or high temperatures for a certain time, could suffer partial damage or complete structural failure. Passive fire-protective coating materials are an alternative way to prevent or delay damage to concrete structures resulting from fire. Superabsorbent polymer (SP) is a synthetic material known for its ability to absorb and retain a large volume of water within itself. With this unique property, the SP exhibits great potential for use as a passive fire protection material. Although several studies have been carried out to investigate the effect of SP as a surface coating material for fire protection, very few have been investigated on the potential use of SP mixed with mortar as a passive fire-protective layer. The objective of this study is to introduce the use of SP in plastering mortar as a fire-protective layer for concrete subjected to temperatures up to 800 °C. This study is divided into two parts: (1) investigating the properties of cement mortar mixed with SP at 0.5% (CONC/SP-0.5) and 1.0% (CONC/SP-1.0) by weight of cement, and (2) investigating the potential use of SP mortar as a plastering layer for concrete subject to high temperatures. The experimental results showed that the density and compressive strength of SP mortar decreases with increasing SP dosages. From the heat exposure results, SP mortar exhibited lower strength loss due to the ability to mitigate moisture through its interconnected pore system. As for the use of SP mortar as a plastering layer, the results demonstrated the concrete specimen plastered with SP mortar had a lower temperature at the interface and core than that plastered with plain mortar. This led to a reduced strength loss of 20.5% for CONC/SP-0.5 and 17.2% for CONC/SP-1.0.

show abstract

Section: Introductionmentioning

confidence: 99%

Use of Cement Mortar Incorporating Superabsorbent Polymer as a Passive Fire-Protective Layer

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Furthermore, any unreacted sodium silicate in the sample can react with generated CO 2 (Na 2 SiO 3 + CO 2 + H 2 O = H 2 SiO 3 + Na 2 CO 3 ), serving as a CO 2 reservoir during combustion. The lower CO 2 content in the system results in reduced gas phase combustion reactions and decreased smoke release [ 47 ].…”

Section: Resultsmentioning

confidence: 99%

A Novel Flame-Retardant, Smoke-Suppressing, and Superhydrophobic Transparent Bamboo

Su,

Yang,

Wan

et al. 2024

Research

View full text Add to dashboard Cite

Silica glass, known for its brittleness, weight, and non-biodegradable nature, faces challenges in finding suitable alternatives. Transparent wood, made by infusing polymers into wood, shows promise but is hindered by limited availability of wood in China and fire risks associated with its use. This study explores the potential of utilizing bamboo, which has a shorter growth cycle, as a valuable resource for developing flame-retardant, smoke-suppressing, and superhydrophobic transparent bamboo. A 3-layered flame-retardant barrier, composed of a top silane layer, an intermediate layer of SiO 2 formed through hydrolysis-condensation of Na 2 SiO 3 on the surface, and an inner layer of Na 2 SiO 3 , has been confirmed to be effective in reducing heat release, slowing flame spread, and inhibiting the release of combustible volatiles, toxic smoke, and CO. Compared to natural bamboo and other congeneric transparent products, the transparent bamboo displays remarkable superiority, with the majority of parameters being notably lower by an entire order of magnitude. It achieves a long ignition time of 116 s, low total heat release (0.7 MJ/m 2 ), low total smoke production (0.063 m 2 ), and low peak CO concentration (0.008 kg/kg). Moreover, when used as a substrate for perovskite solar cells, the transparent bamboo displays the potential to act as a light management layer, leading to a marked efficiency enhancement of 15.29%. The excellent features of transparent bamboo make it an enticing choice for future advancements in flame-retardant glasses and optical devices.

show abstract

“…LDHs show a high level of smoke suppression which can be seen in the paper published by Xia, W. et al (2021) through the analysis of the smoke production rate (SPR), total smoke production (TSP), total smoke release (TSR) and the production of CO and CO 2 . All of these parameters were reduced, especially TSR, which was decreased by 67.2% at the combustion stage, indicating lowering of toxic smoke production [ 220 ]. Bensadoun, F. et al (2011) used 3 wt.% MMT as nanofiller in the environmentally friendly resin and got a reduction of 66% in smoke density [ 221 ].…”

Section: Flame Retardant Chemistrymentioning

confidence: 99%

Progress in Biodegradable Flame Retardant Nano-Biocomposites

2021

View full text Add to dashboard Cite

This paper summarizes the results obtained in the course of the development of a specific group of biocomposites with high functionality of flame retardancy, which are environmentally acceptable at the same time. Conventional biocomposites have to be altered through different modifications, to be able to respond to the stringent standards and environmental requests of the circular economy. The most commonly produced types of biocomposites are those composed of a biodegradable PLA matrix and plant bast fibres. Despite of numerous positive properties of natural fibres, flammability of plant fibres is one of the most pronounced drawbacks for their wider usage in biocomposites production. Most recent novelties regarding the flame retardancy of nanocomposites are presented, with the accent on the agents of nanosize (nanofillers), which have been chosen as they have low or non-toxic environmental impact, but still offer enhanced flame retardant (FR) properties. The importance of a nanofiller’s geometry and shape (e.g., nanodispersion of nanoclay) and increase in polymer viscosity, on flame retardancy has been stressed. Although metal oxydes are considered the most commonly used nanofillers there are numerous other possibilities presented within the paper. Combinations of clay based nanofillers with other nanosized or microsized FR agents can significantly improve the thermal stability and FR properties of nanocomposite materials. Further research is still needed on optimizing the parameters of FR compounds to meet numerous requirements, from the improvement of thermal and mechanical properties to the biodegradability of the composite products. Presented research initiatives provide genuine new opportunities for manufacturers, consumers and society as a whole to create a new class of bionanocomposite materials with added benefits of environmental improvement.

show abstract

Flame retarding and smoke suppressing mechanisms of nano composite flame retardants on bitumen and bituminous mixture

Cited by 27 publications

References 33 publications

Use of Cement Mortar Incorporating Superabsorbent Polymer as a Passive Fire-Protective Layer

Use of Cement Mortar Incorporating Superabsorbent Polymer as a Passive Fire-Protective Layer

A Novel Flame-Retardant, Smoke-Suppressing, and Superhydrophobic Transparent Bamboo

Progress in Biodegradable Flame Retardant Nano-Biocomposites

Contact Info

Product

Resources

About