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³í¹®¸í ´Ü¸é ȸº¹¿ë Áß·® ¸ð¸£Å¸¸£¸¦ »ç¿ëÇÑ Ã¶±ÙÄÜÅ©¸®Æ® ½½·¡ºêÀÇ À½¾Ð ¹× Áøµ¿ Ư¼º / Sound Pressure and Vibration Characteristics of Reinforced Concrete Slab with Heavy Weight Mortar for Cross-section Recovery
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¼ö·Ï»çÇ× Çѱ¹°Ç¼³¼øȯÀÚ¿øÇÐȸ ³í¹®Áý, Vol.12 No.3 (2024-09)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(298) ÃÑÆäÀÌÁö(8)
ISSN 2288-3320
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ÁÖÁ¦¾î ÄÜÅ©¸®Æ® ½½·¡ºê; Áß·® ¸ð¸£Å¸¸£; ½½·¡±×; Áøµ¿ Ư¼º ; Concrete slab; Heavy-weight mortar; Slag; Vibration properties
¿ä¾à1 º» ³í¹®Àº ö±ÙÄÜÅ©¸®Æ® ½½·¡ºêÀÇ ¹Ù´Ú Ãæ°ÝÀ½À» °³¼±Çϱâ À§ÇÑ ±âÃÊ¿¬±¸ÀÌ´Ù. ½Ã°ø¿¡ ÀÇÇØ µÎ²²ÀÇ Â÷ÀÌ°¡ ¹ß»ýÇÏ´Â °æ¿ì¸¦ °í·ÁÇÏ¿©Ã¶±ÙÄÜÅ©¸®Æ® ½½·¡ºêÀÇ ´Ü¸éÀ» ¸ð¸£Å¸¸£·Î ȸº¹½ÃÄ×À» °æ¿ì Â÷À½ Ư¼ºÀÇ º¯È­¸¦ ºÐ¼® ÇÏ¿´´Ù. ºÐ¼® ´ë»ó ÁÖÅÃÀº Æò¸éÇü½ÄÀÌ ´Ù¸¥84 type¿Í 59 typeÀÇ 2Á¾·ù·Î ÇÏ¿´À¸¸ç, ö±ÙÄÜÅ©¸®Æ® ½½·¡ºê À§¿¡ ´Ü¸éÀ» ȸº¹Çϱâ À§ÇØ Áß·®¸ð¸£Å¸¸£·Î ´Ü¸é ȸº¹¿ë ¸ð¸£Å¸¸£½Ã°øÇÒ ¶§¸¦ ö±ÙÄÜÅ©¸®Æ® ½½·¡ºê ´Üµ¶°ú ÀÏ¹Ý ¸ð¸£Å¸¸£·Î ´Ü¸é ȸº¹¿ë ¸ð¸£Å¸¸£ ½Ã°øÇÑ °æ¿ì¿Í ºñ±³ÇÏ¿© Áøµ¿°¡¼Óµµ·¹º§°ú À½¾ÐÀÇÂ÷À̸¦ ÃøÁ¤ÇÏ¿´´Ù. ¸ð¸£Å¸¸£¸¦ Ÿ¼³ ÈÄ ½½·¡ºê¿¡ ´ëÇØ Áøµ¿°¡¼Óµµ ·¹º§À» ÃøÁ¤ÇÑ °á°ú, 84 type 63 Hz¿¡¼­ CS ¸ð¸£Å¸¸£°¡ 66.4 dB, ES ¸ð¸£Å¸¸£°¡ 66.1 dB·Î ÀÏ¹Ý ¸ð¸£Å¸¸£¿¡ ºñÇØ 2 dB ÀÌ»ó ³·°Ô ³ªÅ¸³µ´Ù. ¶ÇÇÑ Ã¶±ÙÄÜÅ©¸®Æ® ½½·¡ºê ´Üµ¶°ú ºñ±³ÇÒ ¶§ CS ¸ð¸£Å¸¸£°¡ 5.5 dB, ES ¸ð¸£Å¸¸£°¡ 4.6 dBÀÌ Àú°¨µÇ¾î ºñ±³Àû ¿ì¼öÇÑ °ªÀ» º¸¿´´Ù. ¹Ù´ÚÃæ°ÝÀ½ À½¾ÐÀº °á°úÀÇ °æ¿ì, 84B typeÀÌ63 Hz¿¡¼­ CS ¸ð¸£Å¸¸£¿Í ÀÏ¹Ý ¸ð¸£Å¸¸£°¡ 67.3 dB·Î À¯»çÇÏ°Ô ³ªÅ¸³µÀ¸¸ç, ö±ÙÄÜÅ©¸®Æ® ½½·¡ºê ´Üµ¶ ´ëºñ Àú °¨·®Àº CS ¸ð¸£Å¸¸£°¡ 3.6 dB, ES ¸ð¸£Å¸¸£°¡ 2.7 dB, ÀÏ¹Ý ¸ð¸£Å¸¸£°¡ 1.4 dB Àú°¨µÇ¾ú´Ù. ö±ÙÄÜÅ©¸®Æ® ½½·¡ºêÀÇ µÎ²²¸¦ º¸»óÇϱâ À§ÇÏ¿© ¸ð¸£Å¸¸£¸¦Å¸¼³ÇÔÀ¸·Î¼­ Áøµ¿°¡¼Óµµ·¹º§ ¹× ¹Ù´ÚÃæ°ÝÀ½Àº °¨¼ÒÇÏ¿´À¸¸ç, µ¿Á¦·Ã ½½·¡±× ÀÜ°ñÀ縦 »ç¿ëÇÑ Áß·®¸ð¸£Å¸¸£¸¦ »ç¿ëÇÒ °æ¿ì »ó´ëÀûÀ¸·Î ¿ì¼öÇÑ ¼º´ÉÀ» ¹ßÇöÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
¿ä¾à2 This paper is a basic study to improve floor impact noise of reinforced concrete slabs. Considering the case where thickness differences occur due to construction, changes in sound insulation characteristics were analyzed when the cross section of a reinforced concrete slab was restored with mortar. The houses subject to analysis were divided into two types, 84 type and 59 type, with different floor plans. When pre-mortaring was done with heavy mortar to restore the cross section on the reinforced concrete slab, the case was when pre-mortaring was done with the reinforced concrete slab alone and with general mortar. Compared with, the difference between vibration acceleration level and sound pressure was measured. As a result of measuring the vibration acceleration level of the slab after pouring the mortar, the CS mortar was 66.4 dB and the ES mortar was 66.1 dB at 84 type 63 Hz, which was more than 2 dB lower than that of regular mortar. In addition, compared to the reinforced concrete slab alone, CS mortar was reduced by 5.5 dB and ES mortar was reduced by 4.6 dB, showing relatively excellent values. As for the floor impact sound pressure, the 84B type was similar at 63 Hz for CS mortar and general mortar at 67.3 dB, and the reduction compared to the reinforced concrete slab alone was 3.6 dB for CS mortar, 2.7 dB for ES mortar, and 2.7 dB for general mortar was reduced by 1.4 dB. By pouring mortar to compensate for the thickness of the reinforced concrete slab, the vibration acceleration level and floor impact noise were reduced, and when a heavy mortar using copper smelting slag fine aggregate was used, relatively excellent performance was found.
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DOI https://doi.org/10.14190/JRCR.2024.12.3.298