玻化微珠作为混凝土骨料的吸声性能研究
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摘要
为研究玻化微珠作为轻集料对混凝土吸声性能的影响,试验采用引气剂发泡,经试验确定玻化微珠的掺量为20%,在此基础上进一步探索水灰比、掺和料对混凝土吸声性能的影响。试验表明:随着水灰比增大,混凝土的吸声性能先增大后降低,水灰比为0. 5时平均吸声系数为52. 3%;引气剂的掺量为0. 3%时平均吸声系数为53. 1%;掺入0. 2%的聚丙烯纤维时,能有效促进混凝土内部形成连通的孔隙进而提高混凝土的吸声性能,混凝土的平均吸声系数达到了55. 6%。
Air entraining agent was used to study the influence of vitrified microbeads as light aggregate on the sound absorption performance of concrete. The dosage of vitrified microbeads was determined to be 20% by experiment. And on this basis,the influence of water-cement ratio and admixture on the sound absorption performance of concrete was further explored. The results showed that with the increase of water-cement ratio,the sound absorption coefficient of concrete increased first and then decreased,the average sound absorption coefficient was 52. 3% when the water-cement ratio was0. 5,and the average sound absorption coefficient was 53. 1% when the content of entraining agent was 0. 3%. The addition of 0. 2% polypropylene fiber can effectively promote the formation of connected pores in the concrete and improve the sound absorption performance of the concrete. The average sound absorption coefficient of the concrete was up to55. 6%.
Air entraining agent was used to study the influence of vitrified microbeads as light aggregate on the sound absorption performance of concrete. The dosage of vitrified microbeads was determined to be 20% by experiment. And on this basis,the influence of water-cement ratio and admixture on the sound absorption performance of concrete was further explored. The results showed that with the increase of water-cement ratio,the sound absorption coefficient of concrete increased first and then decreased,the average sound absorption coefficient was 52. 3% when the water-cement ratio was0. 5,and the average sound absorption coefficient was 53. 1% when the content of entraining agent was 0. 3%. The addition of 0. 2% polypropylene fiber can effectively promote the formation of connected pores in the concrete and improve the sound absorption performance of the concrete. The average sound absorption coefficient of the concrete was up to55. 6%.
引文
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[3] Gupta Alok,Gupta Anant,Jain Khushbu,et al. Noise Pollution and Impact on Children Health[J]. Indian journal of pediatrics,2018,85(4):300-306.
[4] Peters J L,Zevitas C D,Redline S,et al. Aviation Noise and Cardiovascular Health in the United States:a Review of the Evidence and Recommendations for Research Direction[J]. Current Epidemiology Reports,2018(136):1-13.
[5] Angel M Dzhambov,Mariya P Tokmakova,Penka D Gates,et al. Is Community Noise Associated with Metabolic Control in Patients with Cardiovascular Disease?[J]. Acoustics Australia,2017,45(1):61-75.
[6] Mccord M J,Macintyre S,Bidanset P,et al. Examining the spatial relationship between environmental health factors and house prices[J].Journal of European Real Estate Research,2018,11(3):353-398.
[7]秦旭朝.降噪排水多孔水泥混凝土材料性能及路面结构设计研究[D].西安:长安大学,2011.
[8]蔡静平.膨胀玻化微珠的表面改性及其复合板材研究[D].武汉:武汉纺织大学,2012.
[9]王玉.基于一体化节能材料的建筑节能与造价分析[J].居舍,2018(28):186.
[10]张泽平,杨晓晶,李建宇.玻化微珠保温砂浆的绿色评价[J].建筑节能,2008,36(8):44-46.
[11]高建明.多孔混凝土的吸声性能研究//中国硅酸盐学会混凝土与水泥制品分会.中国硅酸盐学会混凝土与水泥制品分会七届二次理事会议暨学术交流会论文集[C].中国硅酸盐学会混凝土与水泥制品分会:中国硅酸盐学会,2007:5.
[12]周栋梁,张志强,李付刚,等.水泥基复合多孔吸声材料的制备方法和性能[J].噪声与振动控制,2008,28(4):136-137,140.
[13]赵晶,刘茜,刘军.透水性道路混凝土吸声性能研究[J].低温建筑技术,2016,38(2):10-13
[14]胡少鹏.水泥基吸声降噪复合材料的制备与性能研究[D].石家庄:石家庄铁道大学,2016.
[15]段祖荣.玻化微珠保温砂浆防水性能的研究[D].长沙:湖南大学,2014.
[16]庄梓豪,黄远洋.加气混凝土制品的吸声特性研究[J].新型建筑材料,2012,39(4):81-83.
[17]彭龙贵,杨晓凤,田进,等. PMI/石膏纤维高频吸声材料的半互穿制备与性能分析[J].砖瓦,2013(11):5-8.
[18]张立,盛美萍.低频宽带共振吸声结构与原理[J].陕西师范大学学报(自然科学版),2005,33(2):59-61.
[19]全明,李玉香,陈万涛.矿渣集料制备水泥基铁路声屏障的研究[J].混凝土与水泥制品,2017(1):80-83.