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  • Lightweight foamed concrete is usually prepared by introducing foaming agents such as hydrogen peroxide and plant surfactants into cement paste to form high pores and voids in the matrix. A foaming agent is a material that facilitates foam formation, such as a Surfactant or a blowing agent. Foaming agents are used extensively in air mist drilling to produce high, stable foams under various conditions. It reduces surface tension and is effective in fresh water and salt water. In this study, it wa What is foamed concrete?Lightweight foamed concrete is usually prepared by introducing foaming agents such as hydrogen peroxide and plant surfactants into cement paste to form high pores and voids in the matrix. A foaming agent is a material that facilitates foam formation, such as a Surfactant or a blowing agent. Foaming agents are used extensively in air mist drilling to produce high, stable foams under various conditions. It reduces surface tension and is effective in fresh water and salt wat Moreover, the content, shape, structure, and distribution of air pores in foam concrete mainly relied on the properties of prefabricated foams, cement pastes, and the interaction between foams and cement pastes. Previously, most of the research focused on improving the cement matrix in foam concrete to increase the stability of fresh foam concrete and optimize the air pore structures. Some scholars have also studied the influence of foaming agents on the properties of foamed concrete. D.K. Panes What is Foaming agent?The foaming agent is an indispensable component in the preparation of foam concrete by using prefabricated foams. This study used four types of foaming agents to prepare foam concrete. Effect of the foaming agent on the properties of fresh and hardened foam concrete, the interaction between the foaming agent and cement, and the gas–liquid interface in foam concrete were studied. It is observed that the interaction between foaming agents and cement played a more significant A disparity in the water release from the foam concrete samples was noticed for two types of foaming agents. The rapid outflow of water from the models was observed in the foam concrete with the protein foaming agent for the curing conditions applied in the tests. The water loss was reduced in the foam concrete with a synthetic foaming agent, and its rate was slower. It gives a preliminary diagnosis of potential shrinkage problems and the necessity of the special curing conditions ensuring a gen Not only does the density affect the compressive strength and thermal conductivity, but it also affects the foam concrete structure. The synthetic or protein nature of the foaming agent contributes to differences in air-void distribution and, as a result, the design of the foam concrete. Using protein-based foaming agents resulted in predominantly microscopic, regular-shaped voids that make the structure more uniform. Then, much better thermo-mechanical properties were obtained for the concrete The analysis of the thermal conductivity dependency on the density detects the linear fit as a best-fitting curve for the considered range of FC densities. The coefficients of the linear fit are depicted. Exceptionally high values of the coefficient of determination, R2, were achieved in the field of 0.96–0.99. Hence, the linear interpolation was confirmed as a realistic description of the thermal conductivity and density relation in the range of the tested FC densities. Of course, the comments Then, the cement type employed in foam concrete was compared regarding thermal conductivity. The obtained results for foam concrete with the considered Buildings 2022, 12, 1176 17 of 20 densities below 500 kg/m3 revealed the beneficial effect of CSA cement on thermal conductivity. Values in the range of 0.048–0.062 Wm−1K−1 were measured for CSA cement, while for OPC, thermal conductivity was between 0.052 and 0.07 Wm−1K−1 in the same density variation. Once again, the reason lies in the substant What is foaming agent?The foaming agent is an indispensable component in the preparation of foam concrete by using prefabricated foams. This study used four types of foaming agents to prepare foam concrete. Effect of the foaming agent on the properties of fresh and hardened foam concrete, the interaction between the foaming agent and cement, and the gas–liquid interface in foam concrete were studied. It is observed that the interaction between foaming agents and cement played a more significant This study aims to investigate the ultra-lightweight foam concrete of rarely studied density ranges (200–500 kg/m3), looking for the most favorable configuration of properties of such feasible insulating material: compressive strength and thermal conductivity. The conducted tests examined the influence of the density, synthetic, and protein foaming agents and binder type on the properties mentioned above. The wide range of the tested densities below 500 kg/m3 allowed for identifying properties a

Why is Lightweight foamed concrete

Lightweight foamed concrete is usually prepared by introducing foaming agents such as hydrogen peroxide and plant surfactants into cement paste to form high pores and voids in the matrix. A foaming agent is a material that facilitates foam formation, such as a Surfactant or a blowing agent. Foaming agents are used extensively in air mist drilling to produce high, stable foams under various conditions. It reduces surface tension and is effective in fresh water and salt water. In this study, it wa

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Why is concrete foaming

What is foamed concrete?Lightweight foamed concrete is usually prepared by introducing foaming agents such as hydrogen peroxide and plant surfactants into cement paste to form high pores and voids in the matrix. A foaming agent is a material that facilitates foam formation, such as a Surfactant or a blowing agent. Foaming agents are used extensively in air mist drilling to produce high, stable foams under various conditions. It reduces surface tension and is effective in fresh water and salt wat

More>>

Air pores in foam concrete

Moreover, the content, shape, structure, and distribution of air pores in foam concrete mainly relied on the properties of prefabricated foams, cement pastes, and the interaction between foams and cement pastes. Previously, most of the research focused on improving the cement matrix in foam concrete to increase the stability of fresh foam concrete and optimize the air pore structures. Some scholars have also studied the influence of foaming agents on the properties of foamed concrete. D.K. Panes

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Distribution of Air Pores in foam concrete

What is Foaming agent?The foaming agent is an indispensable component in the preparation of foam concrete by using prefabricated foams. This study used four types of foaming agents to prepare foam concrete. Effect of the foaming agent on the properties of fresh and hardened foam concrete, the interaction between the foaming agent and cement, and the gas–liquid interface in foam concrete were studied. It is observed that the interaction between foaming agents and cement played a more significant

More>>

The foam concrete samples was noticed for two types of foaming agents

A disparity in the water release from the foam concrete samples was noticed for two types of foaming agents. The rapid outflow of water from the models was observed in the foam concrete with the protein foaming agent for the curing conditions applied in the tests. The water loss was reduced in the foam concrete with a synthetic foaming agent, and its rate was slower. It gives a preliminary diagnosis of potential shrinkage problems and the necessity of the special curing conditions ensuring a gen

More>>

Affects the foam concrete structure

Not only does the density affect the compressive strength and thermal conductivity, but it also affects the foam concrete structure. The synthetic or protein nature of the foaming agent contributes to differences in air-void distribution and, as a result, the design of the foam concrete. Using protein-based foaming agents resulted in predominantly microscopic, regular-shaped voids that make the structure more uniform. Then, much better thermo-mechanical properties were obtained for the concrete

More>>

The considered range of foam concrete densities

The analysis of the thermal conductivity dependency on the density detects the linear fit as a best-fitting curve for the considered range of FC densities. The coefficients of the linear fit are depicted. Exceptionally high values of the coefficient of determination, R2, were achieved in the field of 0.96–0.99. Hence, the linear interpolation was confirmed as a realistic description of the thermal conductivity and density relation in the range of the tested FC densities. Of course, the comments

More>>

The cement type employed in foam concrete was compared

Then, the cement type employed in foam concrete was compared regarding thermal conductivity. The obtained results for foam concrete with the considered Buildings 2022, 12, 1176 17 of 20 densities below 500 kg/m3 revealed the beneficial effect of CSA cement on thermal conductivity. Values in the range of 0.048–0.062 Wm−1K−1 were measured for CSA cement, while for OPC, thermal conductivity was between 0.052 and 0.07 Wm−1K−1 in the same density variation. Once again, the reason lies in the substant

More>>

MANUFACTURING PROCESS OF FOAM CONCRETE

What is foaming agent?The foaming agent is an indispensable component in the preparation of foam concrete by using prefabricated foams. This study used four types of foaming agents to prepare foam concrete. Effect of the foaming agent on the properties of fresh and hardened foam concrete, the interaction between the foaming agent and cement, and the gas–liquid interface in foam concrete were studied. It is observed that the interaction between foaming agents and cement played a more significant

More>>

The ultra lightweight foam concrete of rarely studied density ranges

This study aims to investigate the ultra-lightweight foam concrete of rarely studied density ranges (200–500 kg/m3), looking for the most favorable configuration of properties of such feasible insulating material: compressive strength and thermal conductivity. The conducted tests examined the influence of the density, synthetic, and protein foaming agents and binder type on the properties mentioned above. The wide range of the tested densities below 500 kg/m3 allowed for identifying properties a

More>>

Thermal properties of foam concrete can be improved

Thermal properties of foam concrete can be improved by several types of additives, i.e., coir fiber, which applied resulted in higher heat capacity and lower thermal conductivity of the FC, as well as polypropylene fibers, which allowed for the reduction in the thermal conductivity and improved the mechanical properties of foam concrete. Moreover, the degree of thermal insulation in FC might be influenced by the mixture composition, such as aggregate type and mineral admixtures. Next, conductivi

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By products and wastes are utilized in geopolymer foam concrete

Furthermore, by-products and wastes are utilized in geopolymer foam concrete. Considering the mentioned properties, foam concrete may create an alternative for the commonly used materials such as extruded polystyrene (XPS) boards, which utilization results in unavoidable degradation due to long-term moisture infiltration. However, applying foam concrete as a thermal insulator requires the determination of the optimum parameters that balance the mechanical strength and insulating effect. Crucial

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