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<p>An unique methodology of estimating the heat transfer in the prisms made of structural concrete blocks and cellular concrete blocks with inside plaster coatings is proposed. A continuous heat flow was applied to the outer side of the prisms under the active artificial conditions with a temperature varying within the range 65 ± 2°C during four hours of testing. The heat transfer tests revealed a higher heat flow in the uncoated prisms composed of structural concrete blocks, compared to that in the prisms composed of cellular concrete blocks and covered on their outside with 0.5 cm of roughcast and 2.0 cm of plaster. It was established that the heat transfer in the prisms with an inside coating decreases with increase in the thickness of their plaster coating. Specifically, the prisms composed of cellular concrete blocks with a 2.0-cm inside gypsum coating exhibited a lower heat flow compared to that in such prisms coated with 1.0 cm and 1.5 cm of gypsum. Experimental studies showed a significant decrease in the internal temperature of the prisms composed of structural concrete blocks (by approximately 2.82°C) on application of a 1.0-cm plaster layer to them, A further decrease in this temperature (by 3.13°C) was observed when the thickness of the inside plaster coating of such prisms was increased to 2.0 cm, and an even more significant decrease (by 4.33°C) was achieved when an outside ceramic coating was applied to them in addition to their 2.0-cm inside plaster. However, the best result has been obtained when the prisms composed of cellular concrete blocks with a 1.0-cm inside plaster coating were compared with those with a 2.0-cm inside plaster coating and an outside ceramic coating, and the temperature difference was 3.6°C.</p>

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Characteristics of the Heat Transfer in Traditional Structural Block Prisms and in Cellular Concrete Blocks in Buildings

  • 期刊论文

  • 发表日期：

    2026年6月30日

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  • M. P. Q. Silva,
  • N. B. Lima,
  • P. R. L. Souza,
  • H. C. B. Nascimento,
  • R. C. Manta,
  • B. S. Teti,
  • R. F. Silva,
  • R. M. C. M. O. Carvalho,
  • J. M. F. Mota,
  • L. B. T. dos Santos,
  • N. B. D. Lima

摘要

An unique methodology of estimating the heat transfer in the prisms made of structural concrete blocks and cellular concrete blocks with inside plaster coatings is proposed. A continuous heat flow was applied to the outer side of the prisms under the active artificial conditions with a temperature varying within the range 65 ± 2°C during four hours of testing. The heat transfer tests revealed a higher heat flow in the uncoated prisms composed of structural concrete blocks, compared to that in the prisms composed of cellular concrete blocks and covered on their outside with 0.5 cm of roughcast and 2.0 cm of plaster. It was established that the heat transfer in the prisms with an inside coating decreases with increase in the thickness of their plaster coating. Specifically, the prisms composed of cellular concrete blocks with a 2.0-cm inside gypsum coating exhibited a lower heat flow compared to that in such prisms coated with 1.0 cm and 1.5 cm of gypsum. Experimental studies showed a significant decrease in the internal temperature of the prisms composed of structural concrete blocks (by approximately 2.82°C) on application of a 1.0-cm plaster layer to them, A further decrease in this temperature (by 3.13°C) was observed when the thickness of the inside plaster coating of such prisms was increased to 2.0 cm, and an even more significant decrease (by 4.33°C) was achieved when an outside ceramic coating was applied to them in addition to their 2.0-cm inside plaster. However, the best result has been obtained when the prisms composed of cellular concrete blocks with a 1.0-cm inside plaster coating were compared with those with a 2.0-cm inside plaster coating and an outside ceramic coating, and the temperature difference was 3.6°C.