Thermal Insulating and Constructive Foamed Concrete on a Composite Gypsum Binder

Chernyisheva, Natalia V.; Shatalova, S.; Drebezgova, Mariya; Lesnichenko, E.N.

doi:10.4028/www.scientific.net/msf.974.125

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…In addition, some waste additives affect the physical and mechanical properties of gypsum composites [8]. In several studies, the addition of gypsum was effective in increasing the compressive strength of foamed concrete and reducing the loss of strength due to thermal [9] [10].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Adding Gypsum and Lime on Lightweight Interlock Bricks with Merapi Sand as Fine Agregat

Rakhmawati,

Murtopo,

Sanviani

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Lightweight materials will reduce the earthquake forces received by the structure. Interlock lightweight brick is a new innovation in the building industry that functions as wall material. Utilization of local materials in Central Java-Yogyakarta, namely Merapi sand, needs to be developed to maximize its potential utilization as an aggregate of lightweight interlock brick. In many research, lime and gypsum as additives have been shown to improve the quality of concrete. This study aims to determine the characteristics of the addition of gypsum and lime as an added material for lightweight interlock bricks with fine aggregate of Merapi sand. The standard of test object and the test refers to SNI 8640-2018. The results showed that in dry weight all the mixed variations were categorized in the 900 kg/m3 and 1100 kg/m3 classes. All variations also complied with water absorption requirements in SNI 8640-2018, but only variations of 2.5% gypsum addition and 5% lime addition meet the compressive strength requirements. This mixture has the highest average of compressive strength value compared to other mixtures. Based on SNI 8640-2018 lightweight interlock bricks with the addition of 2.5% gypsum and 5% lime can be used as wall bricks.

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Section: Introductionmentioning

confidence: 99%

The Effect of Adding Gypsum and Lime on Lightweight Interlock Bricks with Merapi Sand as Fine Agregat

Rakhmawati,

Murtopo,

Sanviani

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…Modern trends in the development of building materials science are associated with the need to develop new energy-saving materials and products of porous and large-pore structures [1,2], including those based on gypsum binders and compositions based on them [3,4], which have high strength, low values of average density and thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Properties and Microstructure of Gypsum Stone with Synthetic and Protein Foaming Agents

Лукутцова

Pykin

Golovin

et al. 2020

Lecture Notes in Civil Engineering

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The influence of synthetic (Penostrom) and protein (Foam X) foaming agents on the physical and mechanical properties and microstructure of gypsum stone obtained by dry mineralization of low multiplicity foams (4-6) with high-strength separated gypsum was studied. When using foam based on the foaming agent Penostrom, the average density of gypsum stone is reduced to 430 kg/m 3 (by 3 times), the coefficient of thermal conductivity to 0.14 W/(mÁ°C ) (by 4 times), the compressive strength to 2.4 MPa (by 6 times). Foam based on foaming agent Foam X increases the compressive strength of gypsum stone to 17.5 MPa (by 1.2 times) with a slight increase in the average density (by 3%) and the coefficient of thermal conductivity (by 5%). It was found that the microstructure of gypsum stone with Penostrom is represented by largedispersed crystals of calcium sulfate dihydrate of plate-acicular morphology, meso pores (diameter 3.5-33 nm) with volume of 43•10 −3 cm 3 /g, macro pores (diameter 60-130 nm) with volume of 30•10 −3 cm 3 /g. The microstructure of gypsum stone with Foam X is characterized by the content of fine-dispersed, densely packed crystals CaSO 4 •2H 2 O of prismatic habitus, meso pores (diameter 3.5-33 nm) with volume of 57•10 −3 cm 3 /g, macro pores (diameter 60-130 nm) with volume of 19•10 −3 cm 3 /g.

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Compounding features of composite gypsum binders for porous composites in construction printing technologies

Чернышева

Shatalova

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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At this stage of development of construction technologies and widespread digitalization, one of the most promising and interesting areas of the Russian and international scientific community is construction printing. The main idea of construction printing is to create a finished product or structure with a single installation. The most important task now is to master printing with porous concrete to give structures the required thermal characteristics, without which additive construction cannot fully compete with conventional technologies in the construction of wall structures. One of the promising materials in this case is foam concrete, in which the rapid fixation of the porous structure and the given shape is provided by the use of a composite gypsum binder. The paper considers the possibility of moving away from traditional composition that include active mineral additives by using Portland cements with various mineral additives. The influence of the used foaming agent on the hardening process of the gyp-sum-Portland cement system with various mineral additives was studied. This solution is designed to simplify the technology, make it more attractive for small and medium-sized businesses, increase the compatibility of the binder with foaming agents, as well as its activity to ensure high mechanical performance of foam concrete.

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Thermal Insulating and Constructive Foamed Concrete on a Composite Gypsum Binder

Cited by 5 publications

References 10 publications

The Effect of Adding Gypsum and Lime on Lightweight Interlock Bricks with Merapi Sand as Fine Agregat

The Effect of Adding Gypsum and Lime on Lightweight Interlock Bricks with Merapi Sand as Fine Agregat

Properties and Microstructure of Gypsum Stone with Synthetic and Protein Foaming Agents

Compounding features of composite gypsum binders for porous composites in construction printing technologies

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