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蔡燕霞^{1 ,2 , 3} ,  羅    帥¹ ,  邱   偉⁴ ,  郜佳琦^{2 , 3} ,  薛曉杰⁴ ,  李立輝³

(1 .  河北工程大學(xué) 土木工程學(xué)院 ，邯鄲 056038 ;  2.  中路高科（北京） 公路技術(shù)有限公司 ，北京 100088 ;

3 .  交通運輸部公路科學(xué)研究院 ，北京 100088 ;  4.  廣州市高速公路有限公司 ，廣州 510000)

摘   要 ：為實現(xiàn)廢舊混凝土再生細(xì)骨料的高值化利用，研究了不同泡沫摻量、聚丙烯纖維摻量對再生細(xì)骨料泡沫混凝土的濕密度、流動度、抗壓強(qiáng)度等工作性能影響，結(jié)合多種擬合形式分析了泡沫摻量與抗壓強(qiáng)度之間的擬合關(guān)系。結(jié)果表明： 隨泡沫摻量的增加，再生細(xì)骨料泡沫混凝土的濕密度明顯下降、流動度減小、抗壓強(qiáng)度降低；對不同泡沫摻量的再生細(xì)骨料泡沫混凝土，聚丙烯纖維的摻入會對濕密度與流動度產(chǎn)生不同影響，對抗壓強(qiáng)度無明顯改善效果；根據(jù)有無聚丙烯纖維摻入，再生細(xì)骨料泡沫混凝土的泡沫摻量與強(qiáng)度最佳擬合形式分別為指數(shù)擬合和多項式擬合。

關(guān)鍵詞：再生細(xì)骨料 ；泡沫混凝土 ；抗壓強(qiáng)度 ；泡沫摻量 ；聚丙烯纖維

中圖分類號：U414           

文獻(xiàn)標(biāo)志碼：A            

文章編號： 1005- 8249   (2025)  01- 0001- 06 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .01 .001

CAI Yanxia^{1 , 2 , 3}  ,  LUO Shuai ¹  ,  QIU Wei⁴ ,  GAO Jiaqi², ³ ,  XUE Xiaojie⁴ ,  LI Lihui³

(1 . School of Civil Engineering ,  Hebei University of Engineering ,  Handan 056038 ,  China;

2. Beijing Zhonglu Gaoke Highway Technology Co.，Ltd. ，Beijing 100088 ,  China; 3 . Research Institute of Highway Ministry of Transport ,  Beijing 100088 ,  China;    4. Guangzhou Expressway Technology Co.，Ltd. ，Guangzhou 510000 ,  China)

Abstract：In order to achieve the high-value utilization of recycled fine aggregate from waste concrete, the study investigated the influence of different foam dosages and the presence of polypropylene fibers on the workability properties, such as wet density, flowability, and compressive strength of recycled fine aggregate foamed concrete. By combining various fitting forms, the relationship between foam dosage and compressive strength was analyzed. The research showed that with an increase in foam dosage, the wet density of recycled fine aggregate foamed concrete decreased significantly, while the flowability and compressive strength decreased. The addition of polypropylene fibers had different effects on the wet density and flowability of recycled fine aggregate foamed concrete with different foam dosages, but it did not have a significant improvement effect on compressive strength. According to the presence or absence of polypropylene fibers, the optimal fitting forms for the relationship between foam dosage and strength of recycled fine aggregate foamed concrete were exponential fitting and polynomial fitting, respectively

 Key words: recycled fine aggregates；foamed concrete；compressive strength；foam content；polypropylene fiber

基金項目： 國家自然科學(xué)基金(52178428) 。

作者簡介：蔡燕霞  (1984—) ,  女，博士，高級工程師，研究方向：道路結(jié)構(gòu)與材料。

通信作者： 羅   帥  (1994—) ,  男，碩士研究生，研究方向：路面結(jié)構(gòu)與材料。

收稿日期：2023 - 08 - 31