A simple optimized foam generator and a study on peculiar aspects concerning foams and foamed concrete

Falliano, Devid; Restuccia, Luciana; Gugliandolo, Enrico

doi:10.1016/j.conbuildmat.2020.121101

Cited by 30 publications

(11 citation statements)

References 35 publications

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“…As far as the literature reports in recent years are concerned, there have been no similar efforts made by scholars. Compared with commercial plant protein foaming agents, SRP-50 produced better foam concrete [ 7 , 46 ]. The reason may be that the effective component of the plant protein foaming agent is triterpenoid saponin, which is a non-ionic surfactant with good air-entraining performance.…”

Section: Resultsmentioning

confidence: 99%

“…Stable foam requires a high concentration of synthetic agents and of the amounts of foaming agents used [ 6 ]. Although the foaming ability of the protein foaming agent is lower than that of the synthetic foaming agent, it is much more stable in the performance that researchers are looking for [ 7 ]. In addition, protein foaming agents are also used for foam extinguishing agents due to their safety and environmentally friendly nature.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, protein foaming agents are also used for foam extinguishing agents due to their safety and environmentally friendly nature. As such, there has been a great deal of attention given to the development and improvement of concrete foaming agents, consisting of surfactants and proteins as the main components of the foaming agent [ 4 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Application of Foaming Agent Based on the Compound System of Short-Chain Fluorocarbon and Soybean Residue Protein

Song

Wang

et al. 2022

Materials

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This study provides a new idea for the design of an advanced foaming agent with soybean residue protein (SRP) as a potential protein source. In order to achieve the most effective foaming performance, we employed the novel approach of response surface methodology (RSM) to improve important process parameters in a hot-alkali experiment. The experimental results showed that the optimum reaction parameters of pH and temperature were pH 10.2 and 50.5 °C, respectively, which, when continued for 3 h, led to the highest foaming property of the SRP foaming agent (486 mL). Based on the scheme, we also designed an experiment whereby we incorporated 1.0g/L FS-50 into the SRP foaming agent (SRP-50) to achieve higher foaming capacity compared with the commercial foaming agent. This foaming agent was cheaper than commercial vegetable protein foaming agents (12 USD/L) at 0.258 USD/L. Meanwhile, the properties of foam concrete prepared using SRP-50 were studied in comparison with a commercial vegetable protein foaming agent (PS). The results demonstrated that the foam prepared using SRP-50 had better stability, and the displacement of the foam decreased by 10% after 10 min. During the curing period, the foam concrete possesseda compressive strength of 5.72 MPa after 28 days, which was an increase from 2.95 MPa before. The aperture of the foam ranged from 100 to 500 μm with the percentage increasing up to 71.5%, which indicated narrower pore-size distribution and finer pore size. In addition, the shrinkage of the foam concrete was also improved. These findings not only achieve the utilization of waste but also provide a new source for protein foaming agents.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation and Application of Foaming Agent Based on the Compound System of Short-Chain Fluorocarbon and Soybean Residue Protein

Song

Wang

et al. 2022

Materials

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“…The FC-1 foaming agent developed by our research group is employed, which is diluted to the targeted concentration (one fortieth of its original concentration) prior to use. The nature of the foaming agent significantly affects the properties of foamed concrete [ 22 ]. The characteristics regarding the foaming agent used in the experimental campaign are shown in Table 1 .…”

Section: Experiments Materials and Methodsmentioning

confidence: 99%

Pore Structure, Morphology, and Strength of Self-Compacting Foam Material Backfilled Behind the Underground Pipe-Wall of Yellow River

et al. 2020

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The backfill material for the underground pipe wall of Yellow River embankment was developed to avoid the high settlement and environmental damage caused by high filling and excavation. The interrelation between microstructure and compressive strength of the self-compacting foam backfill material with different water–binder ratios and density grades was investigated. The results indicated that the average pores size of the foam backfill material increased with increasing the water–binder ratio. Moreover, the compressive strength of the foam backfill material first increased and then decreased with continuously increasing the water–binder ratio. Based on the observation and the analysis of the computed tomography (CT) image, it can be found that the pore size of the foam backfill material decreased with the increment of the density grade. The overall findings demonstrated that the pore size and volume played an important role in affecting the performance of the foam backfill material used for the construction of the underground pipe wall of Yellow River embankment.

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“…A synthetic foaming agent is cheaper than a protein foaming agent. Concrete based on synthetic foaming agent has shorter durability [14] and lower strength [15] compared to concrete based on protein foaming agent. The protein foaming agent (vegetable based and animal based) has more suitable characteristics to produce foam concrete [14].…”

Section: Introductionmentioning

confidence: 99%

Combustibility of lightweight foam concrete based on natural protein foaming agent

Rybakov

Seliverstov²,

Usanova

et al. 2021

E3S Web Conf.

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There is an experimental study of samples of monolithic foam concrete “SOVBI” with a density of 205 kg /m3 (grade D200) for combustibility. The evaluation criteria are the following values of combustion characteristics: temperature increment in the furnace, duration of the stable flame burning, sample mass loss. The experimental results show the following values for foam concrete: temperature increment in the furnace of 2 °C, duration of the stable flame burning of 0 s, and sample mass of 24.4%. Thus, monolithic foam concrete with a density of 205 kg/m3 is noncombustible material. It is proposed to use monolithic foam concrete and other lightweight monolithic cellular foam concrete, as a structural fire protection for lightweight steel concrete structures. It, in turn, can increase the fire resistance of external walls and floor structure with the steel frame of cold-formed zinc-coated profiles.

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A simple optimized foam generator and a study on peculiar aspects concerning foams and foamed concrete

Cited by 30 publications

References 35 publications

Preparation and Application of Foaming Agent Based on the Compound System of Short-Chain Fluorocarbon and Soybean Residue Protein

Preparation and Application of Foaming Agent Based on the Compound System of Short-Chain Fluorocarbon and Soybean Residue Protein

Pore Structure, Morphology, and Strength of Self-Compacting Foam Material Backfilled Behind the Underground Pipe-Wall of Yellow River

Combustibility of lightweight foam concrete based on natural protein foaming agent

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