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曾志勇¹ , 馬書山² , 楊淑娟² , 張    勇² , 楊    飛³

( 1. 臺州學院 ，浙江 臺州 318000;

2. 浙江理工大學先進紡織材料與制備技術教育部重點實驗室 ，浙江 杭州 310018 ;

3. 浙江宇博新材料有限公司 ，浙江 臺州 318000)

摘   要： 為提高建筑垃圾再生微粉的利用率，通過不同種類的發劑以及機械研磨處理來激發再生微粉的活性，制備水泥膠砂試體，以抗壓強度、28 d 活性指數以及微觀結構為評價依據，研究不同種類、不同摻量激發劑對再生微粉活性的激發效果。結果表明： 化學激發劑及機械球磨處理均可提高再生微粉的活性 ，在28 d 齡期時， 化學激發劑中 4%Na2 SO4 激發效果最好，4%CaCl2 的激發效果最差，機械球磨處理中，90 min 為最佳處理時間。從微觀角度觀察到再生微粉經過激發劑和機械球磨處理之后，其制成的膠砂試體結構變得更加平整和密實。

關鍵詞： 再生微粉； 化學激發； 機械球磨； 活性指數

中圖分類號： TU521. 2      

文獻標志碼： A      

文章編號： 1005-8249 (2023) 05-0043-08

DOI : 10. 19860/j.cnki.issn1005-8249.2023.05.007

ZENG Zhiyong ¹ , MA Shushan² , YANG Shujuan² , ZHANG Yong ² , YANG Fei³

( 1. Taizhou University , Taizhou 318000 , China;

2. Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of Education ,

Zhejiang Sci-Tech University , Hangzhou 310018 , China;

3. Zhejiang Yubo New Material Co. ，Ltd. ，Taizhou 318000 , China)

Abstract：In order to improve the utilization rate of recycled construction waste micronized powder, the activity of recycled micronized powder was stimulated by different kinds of excitants and mechanical grinding treatment, and cementitious sand specimens were prepared to study the stimulation effect of different kinds and dosing of excitants on the activity of recycled micronized powder based on compressive strength, 28d activity index and microstructure. The results showed that both chemical exciter and mechanical ball milling treatment could improve the activity of regenerated micronized powder, and at the age of 28d, 4% Na2SO4 in chemical exciter had the best excitation effect and 4% CaCl2 had the worst excitation effect, and 90 minutes in mechanical ball milling treatment was the best treatment time. From the microscopic point of view, it was observed that the structure of the colloidal specimens made of recycled micronized powder became more flat and dense after the treatment of exciter and mechanical ball milling.

Keywords：regenerated micronized powder; chemical excitation; mechanical ball milling; activity index

?基金項目： 浙江省重點研發計劃項目  (2021 C03160) 。

作者簡介： 曾志勇  ( 1981 —) , 男 ，博士 ，講師 ，主要從事 先進水泥基材料的制備與性能研究 、新型建材與環境材料的研發 工作。

收稿日期： 2022-08-08