謝洪陽1,董建軍1,戴宜文1,鄧 勇1,鄧明偉2
謝洪陽,董建軍,戴宜文,等.再生微粉泡沫混凝土的配合比設計[J].混凝土與水泥制品,2022(7):87-91.
XIE H Y,DONG J J,DAI Y W,et al.Mix Proportion Design of Foamed Concrete with Recycled Micropowder[J].China Concrete and Cement Products,2022(7):87-91.
再生微粉泡沫混凝土的配合比設計
謝洪陽1,董建軍1,戴宜文1,鄧 勇1,鄧明偉2
謝洪陽,董建軍,戴宜文,等.再生微粉泡沫混凝土的配合比設計[J].混凝土與水泥制品,2022(7):87-91.
XIE H Y,DONG J J,DAI Y W,et al.Mix Proportion Design of Foamed Concrete with Recycled Micropowder[J].China Concrete and Cement Products,2022(7):87-91.
摘 要:通過正交試驗研究了氣泡群摻量、再生微粉摻量、水料比和羥丙基甲基纖維素醚(HPMC)摻量對再生微粉泡沫混凝土性能的影響,并結合功效系數法確定了再生微粉泡沫混凝土的最優配合比。采用SEM和XRD探究了再生微粉泡沫混凝土的微觀結構。結果表明:再生微粉泡沫混凝土的抗壓強度隨著氣泡群摻量、再生微粉摻量的增加呈下降趨勢,隨著水料比的增加呈先上升后下降的趨勢,隨著HPMC摻量的增加呈上升趨勢;再生微粉泡沫混凝土的最優配合比為氣泡群摻量4%、再生微粉摻量30%、水料比0.6、HPMC摻量0.07%;再生微粉泡沫混凝土抗壓強度的提升主要歸因于孔隙細化和HPMC減少了連通孔的產生。
Abstract: The effects of bubbles content, recycled micropowder content, water-material ratio and HPMC content on the properties of foamed concrete with recycled micropowder were studied by orthogonal test, and the optimal mix proportion was determined combined with the efficacy coefficient method. The microstructure of foamed concrete with recycled micropowder was investigated by SEM and XRD. The results show that the compressive strength of foamed concrete with recycled micropowder decreases with the increase of the content of bubbles and recycled micropowder, increases first and then decreases with the increase of the water-material ratio, and increases with the increase of the content of HPMC. The optimal mix proportion of foamed concrete with recycled micropowder is 4% of bubbles, 30% of recycled micropowder, 0.6 of water-material ratio and 0.07% of HPMC. The improvement of the compressive strength of foamed concrete with recycled micropowder is mainly attributed to the pore refinement and HPMC reducing the generation of connected pores.
版權所有:中國混凝土與水泥制品網 蘇ICP備10086386號 網站建設:中企動力 蘇州