王麗霖1，林 雪2,3
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納米碳纖維改性混凝土的力學性能及微觀機理
Mechanical Properties and Micromechanism of Concrete Modified by Carbon Nanofibers
2020年1期 ? No.285 ? P51-54
納米碳纖維；抗壓強度；抗折強度；劈裂強度；改性機理
Carbon nanofiber; Compressive strength; Flexural strength; Splitting strength; Modification mechanism
2020年1期 No.285 P51-54
10.19761/j.1000-4637.2020.01.051.04
黑龍江省交通運輸廳重點科技項目（JTZD-20181826）
王麗霖1，林 雪2,3
1.鄭州工程技術學院土木工程學院，450000；2.東北林業大學工程技術學院，哈爾濱 150040；3.黑龍江東方學院，哈爾濱 150066
王麗霖,林雪.納米碳纖維改性混凝土的力學性能及微觀機理[J].混凝土與水泥制品,2020(1):51-54.
WANG L L, LIN X.Mechanical Properties and Micromechanism of Concrete Modified by Carbon Nanofibers [J].China Concrete and Cement Products,2020(1):51-54.
瀏覽量:
1000
納米碳纖維改性混凝土的力學性能及微觀機理
Abstract: Carbon nanofibers modified concrete was prepared with different dosage of carbon nanofibers. The compressive strength, flexural strength and splitting strength of the concrete were tested, and the modification mechanism was explored. The results show that the appropriate amount of carbon nanofibers can improve the mechanical properties of concrete. When the content of carbon nanofibers is 0.3%, the carbon nanofibers modified concrete has the best mechanical properties, among which the compressive strength, flexural strength and splitting strength are increased by 9.2%, 13.2% and 17.5% respectively compared with those of plain concrete. The SEM results show that carbon nanofibers can form a three-dimensional network structure inside concrete, thereby improving the micro-morphology of concrete, enhancing the toughness and integrity of concrete, filling the internal pore defects inside concrete, refining the pore diameter distribution, and consuming part of the fracture energy of concrete when it is destroyed.
英文名 :
Mechanical Properties and Micromechanism of Concrete Modified by Carbon Nanofibers
刊期 :
2020年1期 ? No.285 ? P51-54
關鍵詞 :
納米碳纖維；抗壓強度；抗折強度；劈裂強度；改性機理
Key words :
Carbon nanofiber; Compressive strength; Flexural strength; Splitting strength; Modification mechanism
刊期 :
2020年1期 No.285 P51-54
DOI :
10.19761/j.1000-4637.2020.01.051.04
文章編號 :
基金項目 :
黑龍江省交通運輸廳重點科技項目（JTZD-20181826）
作者 :
王麗霖1，林 雪2,3
單位 :
1.鄭州工程技術學院土木工程學院，450000；2.東北林業大學工程技術學院，哈爾濱 150040；3.黑龍江東方學院，哈爾濱 150066
王麗霖1，林 雪2,3
王麗霖,林雪.納米碳纖維改性混凝土的力學性能及微觀機理[J].混凝土與水泥制品,2020(1):51-54.
WANG L L, LIN X.Mechanical Properties and Micromechanism of Concrete Modified by Carbon Nanofibers [J].China Concrete and Cement Products,2020(1):51-54.
摘要
參數
結論
參考文獻
引用本文
摘要：采用不同摻量的納米碳纖維制備混凝土，測試了納米碳纖維改性混凝土的抗壓強度、抗折強度和劈拉強度，并對其改性機理進行了探究。結果表明，適量的納米碳纖維能夠提高混凝土的力學性能。當摻量為0.3%時，納米碳纖維改性混凝土的力學性能最優，其抗壓強度、抗折強度和劈拉強度相較于素混凝土分別提高了9.2%、13.2%和17.5%。SEM測試結果表明，納米碳纖維能夠在混凝土內部形成立體網狀結構，改善混凝土的微觀形貌特征，增強混凝土的韌性和整體性，填充混凝土內部的孔隙缺陷，細化孔徑分布，消耗混凝土破壞時的部分斷裂破壞能。
Abstract: Carbon nanofibers modified concrete was prepared with different dosage of carbon nanofibers. The compressive strength, flexural strength and splitting strength of the concrete were tested, and the modification mechanism was explored. The results show that the appropriate amount of carbon nanofibers can improve the mechanical properties of concrete. When the content of carbon nanofibers is 0.3%, the carbon nanofibers modified concrete has the best mechanical properties, among which the compressive strength, flexural strength and splitting strength are increased by 9.2%, 13.2% and 17.5% respectively compared with those of plain concrete. The SEM results show that carbon nanofibers can form a three-dimensional network structure inside concrete, thereby improving the micro-morphology of concrete, enhancing the toughness and integrity of concrete, filling the internal pore defects inside concrete, refining the pore diameter distribution, and consuming part of the fracture energy of concrete when it is destroyed.
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