装配式建筑用钢纤维增强泡沫混凝土填充墙性能研究
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摘要
目前装配式建筑大力发展,填充墙在框架、框架-剪力墙和框筒结构中充当分割空间的功能,其必须具有质轻、力学性能优良、保温隔热和隔声降噪的功能。泡沫混凝土具有较多的孔隙,其能够有效吸收噪声,同时复配钢纤维,能够极大提高其力学性能。研究了钢纤维掺量和长度对钢纤维-泡沫混凝土力学性能和降噪保温隔热性能的影响。结果表明:当钢纤维掺量为4%,长度为40 mm时,钢纤维-泡沫混凝土具有优良的力学性能;在夏季代表温度40℃下具有良好的隔热性能,内外墙温差达到5.6℃,同时具有良好的保温性能和隔声性能。
At present,with the development of prefabricated architecture,the infilled wall acts as the function of dividing space in frame,frame-shear wall and frame-tube structure,which must have the functions of light weight,excellent mechanical performance,heat insulation and noise insulation. Foamed concrete has more pores,it can effectively absorb noise,and the composite steel fiber can greatly improve its mechanical properties. In this experiment,the effects of steel fiber content and length on the mechanical properties and noise reduction and thermal insulation properties of steel fiber-foamed concrete were studied. The re-sults show that when the content of SF is 4% and the length of SF is 40 mm,it has excellent mechanical properties,good cooling and heat insulation performance at 40 ℃ in summer,which can effectively reduce internal and external wall temperature difference by 5.6 ℃ and have good thermal insulation performance and sound insulation performrance,achieve the function of noise reduction.
At present,with the development of prefabricated architecture,the infilled wall acts as the function of dividing space in frame,frame-shear wall and frame-tube structure,which must have the functions of light weight,excellent mechanical performance,heat insulation and noise insulation. Foamed concrete has more pores,it can effectively absorb noise,and the composite steel fiber can greatly improve its mechanical properties. In this experiment,the effects of steel fiber content and length on the mechanical properties and noise reduction and thermal insulation properties of steel fiber-foamed concrete were studied. The re-sults show that when the content of SF is 4% and the length of SF is 40 mm,it has excellent mechanical properties,good cooling and heat insulation performance at 40 ℃ in summer,which can effectively reduce internal and external wall temperature difference by 5.6 ℃ and have good thermal insulation performance and sound insulation performrance,achieve the function of noise reduction.
引文
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[2]闫莉媛.浅析预制装配式建筑结构特点和发展应用前景[J].建材与装饰,2016(37):25-27.
[3]聂建国,陶慕轩,黄远,等.钢-混凝土组合结构体系研究新进展[J].建筑结构学报,2010,31(6):71-80.
[4]周明杰,王娜娜,赵晓艳,等.泡沫混凝土的研究和应用最新进展[J].混凝土,2009(4):104-107.
[5]陈兵,刘睫.纤维增强泡沫混凝土性能试验研究[J].建筑材料学报,2010,13(3):286-290.
[6]潘志华,陈国瑞,李东旭,等.现浇泡沫混凝土常见质量问题分析及对策[J].新型建筑材料,2004,31(1):4-7.
[7]杨长辉,王磊,田义,等.碱矿渣泡沫混凝土性能研究[J].硅酸盐通报,2016,35(2):555-560.
[8]田雨泽,刘继红,胡君一,等.现浇泡沫混凝土自保温复合墙体的工程应用研究[J].新型建筑材料,2014,41(12):23-25.
[9]牛云辉,卢忠远,严云,等.泡沫混凝土整体现浇墙体工程应用研究[J].新型建筑材料,2011,38(3):25-29.
[10]刘秋美,李彩玉,杨江红,等.聚丙烯纤维增强磷渣粉煤灰泡沫混凝土性能的试验研究[J].新型建筑材料,2017,44(5):113-115.
[11]陈慧.中国避暑型与避寒型宜人气候的地域类型及其时空特征研究[D].南京:南京信息工程大学,2015.