中文字幕欧美日韩_欧美日本一区_麻豆亚洲av熟女国产一区二_鲁丝一区二区三区_男人的天堂av网_男女猛烈激情xx00免费视频_日本香蕉视频在线观看_色姑娘综合av_亚洲伊人久久综合_日韩精品视频免费专区在线播放

PDF全文閱讀

陳思豫1  ,  石恩華1  ,  周永貴1  ,  李    欣2  ,  盧   亞2

( 1 .  航天宏圖信息技術股份有限公司 ，北京 100195 ;  2.  北京建筑大學 土木與交通工程學院 ，北京 100044)

摘   要 ：為提升建筑垃圾資源化利用水平 ，開展物理發泡工藝制備再生微粉泡沫混凝土的研究。固定再生 微粉摻量為膠凝材料總量的 10% 。分析再生微粉泡沫混凝土 X 射線衍射圖 ，揭示了水膠比對再生微粉泡沫混凝 土強度的影響規律 ，分析了摻入膠粉和纖維對再生微粉泡沫混凝土性能的提升效果。結果表明：再生微粉泡沫 混凝土的抗折和抗壓強度隨著水膠比的減小而增大 ，整體規律與普通混凝土相似 ，但增幅更大 ；膠粉 、纖維的 加入可以改善泡沫混凝土中孔徑的分布 ，使試件的小孔占比增多 ，對再生微粉泡沫混凝土抗壓強度及抗折強度 均有提高。結論可為相關工程提供參考。

關鍵詞：再生微粉 ；泡沫混凝土 ；孔結構 ；力學性能

中圖分類號：TU55           文獻標志碼：A        

    

文章編號： 1005- 8249   (2025)  03- 0043- 06 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .03 .008

CHEN Siyu ¹,SHI Enhua¹, ZHOU Yonggui ¹, LI Xin², LU Ya²

(1. Hangtian Hongtu Information Technology Co., Ltd., Beijing 100195, China；

2. Beijing University of Architecture and Civil Engineering, School of Civil and Transportation Engineering, Beijing 100044, China）

Abstract：In order to improve the level of resource utilization of construction waste, the research on the preparation of recycled micro-powder foam concrete by physical foaming process was carried out. The amount of fixed recycled fine powder is 10 % of the total amount of cementitious materials. The X-ray diffraction pattern of recycled micro-powder foam concrete was analyzed, and the influence of water-binder ratio on the strength of recycled micro-powder foam concrete was revealed. The effect of adding rubber powder and fiber on the performance of recycled micro-powder foam concrete was analyzed. The results show that the flexural and compressive strength of recycled micro-powder foam concrete increase with the decrease of water-binder ratio, and the overall law is similar to that of ordinary concrete, but the increase is greater. The addition of rubber powder and fiber can improve the distribution of pore size in foam concrete, increase the proportion of small pores in the specimen, and improve the compressive strength and flexural strength of recycled fine powder foam concrete.

Keywords: recycled powder; foam concrete; pore structure; mechanical properties

基金項目：鄭州市自然資源和規劃局鄭州多要素城市地質調 查項目 建筑垃圾現狀調查與資源化利用研究（ 鄭財招標采購-  2020 - 475) 。

作者簡介： 陳思豫  (1989—) ,   男 ，碩士 ， 工程師 ，研究方 向 ：建筑垃圾資源化應用等。

收稿日期：2024 - 07 - 03