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王建華¹，賴益梁¹，劉剛¹，楊楓²，劉建新¹，李廣生¹

（1.華東勘測設計院（福建）有限公司，福建 福州 361005；2.福建理工大學土木工程學院，福建 福州 350108）

摘 要：用煤矸石粉部分替代粉煤灰制備混凝土用復合礦物摻合料，通過正交實驗研究煤矸石粉、粉煤灰、磷渣摻量對受檢膠砂抗折強度、抗壓強度、活性指數和強度增長比的影響。結果顯示，由于火山灰效應和微集料效應，煤矸石粉、粉煤灰、磷渣對水泥的水化存在較強相互作用，設計配合比適宜時，受檢膠砂的7和28 d活性指數及強度增長比均達到普通Ⅲ級復合礦物摻合料指標要求，表明用煤矸石粉部分替代粉煤灰制備混凝土用復合礦物摻合料完全可行，最優方案為煤矸石粉摻量25.0%、粉煤灰摻量62.5%、磷渣摻量12.5%。

關鍵詞：煤矸石粉；粉煤灰；復合摻合料；混凝土；磷渣；性能

中圖分類號：TU528.35              

文獻標志碼：A      

文章編號：1005-8249（2024）01-0018-05

DOI：10.19860/j.cnki.issn1005-8249.2024.01.004

 

WANG Jianhua¹，LAI Yiliang¹，LIU Gang¹，YANG Feng²，LIU Jianxin¹，LI Guangsheng¹

(1.East China Survey and Design Institute (Fujian) Co., Ltd., Fuzhou 361005, China;
2.School of Civil Engineering, Fujian University of Technology, Fuzhou 350108, China)

Abstract：The composite mineral admixtures for concrete were prepared by partially replacing fly ash with coal gangue powder. The effects of coal gangue powder, fly ash and phosphorus slag on the flexural strength, compressive strength, activity index and strength growth ratio of the tested mortar were studied through orthogonal experiments. The results showed that there was a strong interaction between gangue powder, fly ash and phosphorus residue on the hydration of cement, and when the design mix ratio is appropriate ,the 7-day and 28-day activity index and strength growth ratio of the tested gum sand reached the requirements of the ordinary grade III composite mineral admixture of composite admixture for concrete, indicating that it was completely feasible to prepare composite mineral admixture for concrete by replacing fly ash with gangue powder, and the optimal scheme is to add 25.0% coal gangue powder,62.5% fly ash,and 12.5% phosphorus slag.

Keywords: gangue powder, fly ash, composite admixtures, concrete, phosphorus residue;property

作者簡介：王建華，（1981），男，本科，高級工程師，主要研究方向：市政、建筑工程及建筑新材料。

收稿日期：2023-01-10