Analysis of Influence of Foaming Mixture Components on Structure and Properties of Foam Glass

Karandashova, N. S.; Гольцман, Б. М.; Yatsenko, E. A.

doi:10.1088/1757-899x/262/1/012020

Cited by 21 publications

(14 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Glass fiber is widely used in cement materials, which do not show a considerable improvement in sound absorption, but it improves sound reflection well due to the creation of a dense and low-porous structure [ 128 , 132 , 133 , 134 , 135 ]. Although significant studies have investigated FGC, very few characterized its open and closed porosity in detail [ 136 , 137 , 138 ]. The majority of the available research focused only on the partially closed, open porosity, closed porous with high density, or open porosity with lower-density FCs [ 139 , 140 , 141 ].…”

Section: Type Of Concretesmentioning

confidence: 99%

Acoustic Properties of Innovative Concretes: A Review

et al. 2021

View full text Add to dashboard Cite

Concrete is the most common building material; therefore, when designing structures, it is obligatory to consider all structural parameters and design characteristics such as acoustic properties. In particular, this is to ensure comfortable living conditions for people in residential premises, including acoustic comfort. Different types of concrete behave differently as a sound conductor; especially dense mixtures are superior sound reflectors, and light ones are sound absorbers. It is found that the level of sound reflection in modified concrete is highly dependent on the type of aggregates, size and distribution of pores, and changes in concrete mix design constituents. The sound absorption of acoustic insulation concrete (AIC) can be improved by forming open pores in concrete matrices by either using a porous aggregate or foam agent. To this end, this article reviews the noise and sound transmission in buildings, types of acoustic insulating materials, and the AIC properties. This literature study also provides a critical review on the type of concretes, the acoustic insulation of buildings and their components, the assessment of sound insulation of structures, as well as synopsizes the research development trends to generate comprehensive insights into the potential applications of AIC as applicable material to mitigate noise pollution for increase productivity, health, and well-being.

show abstract

Section: Type Of Concretesmentioning

confidence: 99%

Acoustic Properties of Innovative Concretes: A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Generally, a liquid foaming agent has the advantage of easily dissipating among the fine particles of glass waste, as unlike to a solid agent. The glycerol (C3H8O3) embedded in the powder mixture decomposes in the oxidizing atmosphere of the oven releasing a wide spectrum of compounds between CO2 and pure carbon and also hydroxyl compounds (Karandashova et al, 2017). The thermal decomposition of glycerol is a complex process, which is initiated at low temperatures (below 200 ºC) and occurs in several stages up to about 850 ºC (Dou et al, 2008).…”

Section: Methodsmentioning

confidence: 99%

“…Initially added to the solid powder mixture together with the liquid foaming agent and water, the "water glass" slows down the decomposition of glycerol and intensifies the glass particles sintering. The water addition favors the formation at about 800 C of the so-called "water gas" containing hydrogen and carbon monoxide, which contributes to the foaming process of the glass (Karandashova et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

Foam Glass Gravel Experimentally Made in a 10 kW-Microwave Oven

Paunescu¹,

Axinte

Cosmulescu³

2021

JLMA

View full text Add to dashboard Cite

Abstract The experimental manufacture of foam glass gravel from glass waste has been quantitatively extended by increasing the power of the microwave oven from 0.8 to10 kW, the authors' interest being focused on the quality of the foamed product. The work equipment was rather improvised, the existing used oven not being adequate except to small extent for the requirements of the experiment, but it allowed obtaining a product similar to those industrially manufactured by conventional techniques. Using a recipe previously tested on the 0.8 kW-microwave oven composed of 1 wt.% glycerol as a liquid foaming agent together with 8 wt.% water glass as an enveloping agent and 8 wt.% water as a binder, the main features of the foam glass gravel lumps were: bulk density of 0.22 g/cm3, porosity of 88.9%, thermal conductivity of 0.057 W/m·K, compressive strength of 5.9 MPa and pore size between 0.10-0.30 mm. The specific energy consumption was negatively influenced by the excessive internal volume of the oven, but even under these conditions its value was relatively low (between 1.53-1.69 kWh/kg).

show abstract

“…Due to the peculiarities of carbon as a foaming agent, its use in oven without oxidizing atmosphere is difficult, being necessary the introduction of materials with the role of enveloping the fine carbon particles to prevent its premature oxidation [11]. Small-scale experiments have shown that alkaline phosphates (especially, sodium phosphate-Na3PO4 and potassium phosphate-K3PO4) used in foaming processes of glass waste have a role of foam stabilizer [12].…”

Section: Introductionmentioning

confidence: 99%

Microwave Manufacture of Glass Foam by Combined Use of Graphite and Calcium Carbonate as Foaming Agents

Paunescu¹,

Axinte²,

Drăgoescu³

et al. 2021

JESR

View full text Add to dashboard Cite

The paper presents experimental results obtained in the manufacturing process of high-strength glass foam by combined use of two solid foaming agents (calcium carbonate and graphite) in variable weight ratios. The originality of the work is applying the unconventional microwave heating method, unlike the conventional techniques currently used in similar industrial processes. The optimal experimental variant, composed of 89.1 % glass waste, 0.9% calcium carbonate, 1 % graphite and other additives, was sintered at 828 ºC with a very low energy consumption (0.73 kWh/kg). The main characteristics of the optimal product were apparent density of 0.39 g/cm3, thermal conductivity of 0.088 W/m·K and compressive strength of 3.6 MPa, being usable in fields that requires resistance to mechanical stress and relatively difficult environmental conditions.

show abstract

Analysis of Influence of Foaming Mixture Components on Structure and Properties of Foam Glass

Cited by 21 publications

References 15 publications

Acoustic Properties of Innovative Concretes: A Review

Acoustic Properties of Innovative Concretes: A Review

Foam Glass Gravel Experimentally Made in a 10 kW-Microwave Oven

Microwave Manufacture of Glass Foam by Combined Use of Graphite and Calcium Carbonate as Foaming Agents

Contact Info

Product

Resources

About