重晶砂掺量对抹灰隔声砂浆性能的影响研究  

Research on the effect of barite sand content on plastering sound insulation mortar properties

作　　者：申和庆 曹力强 叶武平 王小燕 梁瑞华 SHEN Heqing;CAO Liqiang;YE Wuping;WANG Xiaoyan;LIANG Ruihua(CABR Building Co.,Ltd.,Beijing 100013,China;CABR Materials Co.,Ltd.,Beijing 100013,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013 [2]建研建材有限公司,北京100013

出　　处：《混凝土与水泥制品》2024年第8期71-74,共4页China Concrete and Cement Products

基　　金：中国建筑科学研究院有限公司青年科研基金项目(20220122331030009)。

摘　　要：采用重晶砂等体积替代机制砂(0、20%、40%、60%、80%和100%),研究了重晶砂掺量对抹灰隔声砂浆干表观密度、分层度、抗压强度、抗折强度、拉伸黏结强度、空气声隔声量的影响。结果表明:采用重晶砂替代机制砂可有效提高砂浆的干表观密度,最大可达3040 kg/m^(3);随着重晶砂掺量的增加,分层度先增加后降低,抗折强度、抗压强度和拉伸黏结强度均逐渐降低;掺入重晶砂可提高轻质隔墙的空气声隔声量,当掺量为100%时,隔声效果最好,较空白组砂浆的空气声隔声量提高了3 dB,较裸墙提高了7 dB。The effects of barite sand replacing mechanism sand(0、20%、40%、60%、80%、100%)in equal volume on the dry apparent density,layering degree,compressive and flexural strength,tensile bonding strength and air sound insulation of plastering sound insulation mortar were studied.The results show that replacing mechanism sand with barite sand can effectively improve the dry apparent density of mortar,with a maximum dry apparent density of 3040 kg/m^(3).With the increase of barite sand content,the layering degree first increases and then decreases,and the flexural strength,compressive strength,and tensile bonding strength gradually decrease.Adding barite sand can improve the air sound insulation of lightweight partition walls.When the content is 100%,the sound insulation effect is the best,which is 3 dB higher than ordinary mortar insulation and 7 dB higher than bare panels of lightweight partition walls.

关 键 词：隔声砂浆 重晶砂 隔声量 抗压强度 

分 类 号：TU528.19[建筑科学—建筑技术科学]