碳纤维建筑节能保温砂浆的制备及其性能研究

TQ177.68; 为了获得优异保温性能和高强度的节能保温砂浆,以普通硅酸盐水泥P.O 42.5作为基质材料,通过在砂浆中添加适量的碳纤维作为增强材料,以此制备了碳纤维建筑节能保温砂浆,研究了碳纤维的掺杂量对保温砂浆的力学性能、收缩率及保温性能的影响,并建立了保温砂浆导热系数和表观密度的关系式.结果表明,随着碳纤维掺杂量的增大,保温砂浆的表观密度先降低后轻微升高,稠度、抗压强度和抗折强度均先升高后降低.在28 d龄期,当碳纤维的掺杂量为0.5％(质量分数)时,保温砂浆中网状结构的致密性最好,抗压强度和抗折强度均达到最大值,分别为46.1和6.8 MPa,其中抗折强度提高了 23.64％,改善效...

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Published in功能材料 Vol. 54; no. 12; pp. 12136 - 12141
Main Authors 赵云丽, 侯风, 崔二江
Format Journal Article
LanguageChinese
Published 郑州工业应用技术学院建筑工程学院,郑州 451100%江苏海洋大学土木与海港工程学院,江苏连云港 222005%湖南科技大学土木工程学院,湖南湘潭 411201 30.12.2023
Subjects
力学性能
thermal insulation performance
carbon fiber
thermal insulation mortar
保温性能
碳纤维
建筑节能
shrinkage rate
保温砂浆
building energy efficiency
mechanical properties
收缩率
Online AccessGet full text
ISSN1001-9731
DOI10.3969/j.issn.1001-9731.2023.12.018

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Abstract TQ177.68; 为了获得优异保温性能和高强度的节能保温砂浆,以普通硅酸盐水泥P.O 42.5作为基质材料,通过在砂浆中添加适量的碳纤维作为增强材料,以此制备了碳纤维建筑节能保温砂浆,研究了碳纤维的掺杂量对保温砂浆的力学性能、收缩率及保温性能的影响,并建立了保温砂浆导热系数和表观密度的关系式.结果表明,随着碳纤维掺杂量的增大,保温砂浆的表观密度先降低后轻微升高,稠度、抗压强度和抗折强度均先升高后降低.在28 d龄期,当碳纤维的掺杂量为0.5％(质量分数)时,保温砂浆中网状结构的致密性最好,抗压强度和抗折强度均达到最大值,分别为46.1和6.8 MPa,其中抗折强度提高了 23.64％,改善效果高于抗压强度.随着碳纤维掺杂量的增大,保温砂浆的收缩率持续降低,导热系数先降低后增大,当碳纤维的掺杂量为0.5％(质量分数)时,保温砂浆的导热系数达到最低值为0.0583 W/(m·K),保温性能最佳.通过拟合保温砂浆的导热系数和表观密度发现两者为线性相关,方程的拟合度为98.4％.综合可知,碳纤维的最佳掺杂量为0.5％(质量分数).
AbstractList TQ177.68; 为了获得优异保温性能和高强度的节能保温砂浆,以普通硅酸盐水泥P.O 42.5作为基质材料,通过在砂浆中添加适量的碳纤维作为增强材料,以此制备了碳纤维建筑节能保温砂浆,研究了碳纤维的掺杂量对保温砂浆的力学性能、收缩率及保温性能的影响,并建立了保温砂浆导热系数和表观密度的关系式.结果表明,随着碳纤维掺杂量的增大,保温砂浆的表观密度先降低后轻微升高,稠度、抗压强度和抗折强度均先升高后降低.在28 d龄期,当碳纤维的掺杂量为0.5％(质量分数)时,保温砂浆中网状结构的致密性最好,抗压强度和抗折强度均达到最大值,分别为46.1和6.8 MPa,其中抗折强度提高了 23.64％,改善效果高于抗压强度.随着碳纤维掺杂量的增大,保温砂浆的收缩率持续降低,导热系数先降低后增大,当碳纤维的掺杂量为0.5％(质量分数)时,保温砂浆的导热系数达到最低值为0.0583 W/(m·K),保温性能最佳.通过拟合保温砂浆的导热系数和表观密度发现两者为线性相关,方程的拟合度为98.4％.综合可知,碳纤维的最佳掺杂量为0.5％(质量分数).
Abstract_FL In order to obtain excellent insulation performance and high-strength energy-saving insulation mortar,a carbon fiber building energy-saving insulation mortar was prepared using ordinary Portland cement P.O 42.5 as the matrix material and adding an appropriate amount of carbon fiber as the reinforcing material in the mor-tar.The effect of carbon fiber doping on the mechanical properties,shrinkage rate,and insulation performance of insulation mortar was studied,and the relationship between thermal conductivity and apparent density of in-sulation mortar was established.The results showed that with the increase of carbon fiber doping amount,the apparent density of insulation mortar first decreased and then slightly increased,while the consistency,com-pressive strength,and flexural strength all increased and then decreased.At the age of 28 d,when the doping a-mount of carbon fiber was 0.5 wt％,the compactness of the network structure in the insulation mortar was the best,with the compressive strength and flexural strength reaching their maximum values of 46.1 and 6.8 MPa,respectively.Among them,the flexural strength had increased by 23.64％,and the improvement effect was higher than the compressive strength.As the amount of carbon fiber doping increased,the shrinkage rate of in-sulation mortar continues to decreased,and the thermal conductivity first decreased and then increased.When the doping amount of carbon fiber was 0.5 wt％,the thermal conductivity of the insulation mortar reached the lowest value of 0.0583 W/(m·K),indicating the best insulation performance.By fitting the thermal conductiv-ity and apparent density of insulation mortar,it was found that they are linearly correlated,with a fitting de-gree of 98.4％.Overall,the optimal doping amount for carbon fibers is 0.5 wt％.
Author 崔二江
侯风
赵云丽
AuthorAffiliation 郑州工业应用技术学院建筑工程学院,郑州 451100%江苏海洋大学土木与海港工程学院,江苏连云港 222005%湖南科技大学土木工程学院,湖南湘潭 411201
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Author_FL CUI Erjiang
ZHAO Yunli
HOU Feng
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Issue 12
Keywords 力学性能
thermal insulation performance
carbon fiber
thermal insulation mortar
保温性能
碳纤维
建筑节能
shrinkage rate
保温砂浆
building energy efficiency
mechanical properties
收缩率
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Publisher 郑州工业应用技术学院建筑工程学院,郑州 451100%江苏海洋大学土木与海港工程学院,江苏连云港 222005%湖南科技大学土木工程学院,湖南湘潭 411201
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Title 碳纤维建筑节能保温砂浆的制备及其性能研究
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