掺建筑垃圾水泥稳定碎石力学强度增长规律与预测模型

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (10): 3755-3764.

掺建筑垃圾水泥稳定碎石力学强度增长规律与预测模型

张宇¹, 蒋应军¹, 范江涛¹, 许晓平², 俞晓松²

1.长安大学特殊地区公路工程教育部重点实验室,西安 710064;
2.鸿翔环境科技股份有限公司,嘉兴 314400

收稿日期:2024-03-04 修订日期:2024-05-13 出版日期:2024-10-15 发布日期:2024-10-16
通信作者: 蒋应军,博士,教授。E-mail:jyj@chd.edu.cn
作者简介:张宇(1996—),男,博士研究生。主要从事道路材料方面的研究。E-mail:zyu@chd.edu.cn
基金资助:
陕西省创新能力支撑计划(2022TD-06);交通运输行业重点科技项目(2021-MS1-011);长安大学中央高校基本科研业务费专项资金资助(300102213401)

Mechanical Strength Growth Law and Prediction Model of Cement Stabilized Macadam with Construction Waste

ZHANG Yu¹, JIANG Yingjun¹, FAN Jiangtao¹, XU Xiaoping², YU Xiaosong²

1. Key Laboratory of Highway Engineering in Special Areas, Ministry of Education, Chang'an University, Xi'an 710064, China;
2. Hongxiang Environmental Technology Co., Ltd., Jiaxing 314400, China

Received:2024-03-04 Revised:2024-05-13 Published:2024-10-15 Online:2024-10-16

摘要/Abstract

摘要： 本文研究了建筑垃圾再生集料掺量对水泥稳定碎石(CSM)力学强度的影响,以强度最高或掺量最大为原则提出了再生集料最佳掺量和配比,并在最优掺量下研究了再生集料水泥稳定碎石(CSMRA)的力学强度增长规律,提出了CSRA力学强度的预测模型,并进行了可靠性验证。结果表明:CSRA抗压强度随再生细集料掺量增加先增大后减小,随再生粗集料掺量增加而降低,再生集料最大掺量为70%(质量分数);所建立的力学强度增长方程和预测模型的相关系数均大于0.98,预测值与实测值误差不大于14.0%,表明在确定水泥掺量、集料类型、矿料配比及7 d强度后,该模型可准确预测CSRA在其他养生龄期时的力学强度。

关键词: 建筑垃圾, 水泥稳定碎石, 力学强度, 增长规律, 预测模型

Abstract: The effect of dosage of recycled aggregate from construction waste on the mechanical strength ofcement stabilized macadam (CSM) was investigated, the optimal dosage and proportion of recycled aggregate were proposed based on the principle of the highest strength or the maximum dosage. The growth law of mechanical strength of cement stabilized macadam recycled aggregate (CSMRA) was investigated under the optimal dosage, a prediction model of mechanical strength of CSMRA was proposed, and the reliability of prediction was verified. The results show that the compressive strength of CSMRA increases and then decreases with the increase of recycled fine aggregate dosage, decreases with the increase of recycled coarse aggregate dosage, and the maximum dosage of recycled aggregate is 70% (mass fraction). The correlation coefficient of established mechanical strength growth equation and prediction model is more than 0.98, and the error between predicted value and measured value is no more than 14.0%. This indicates that the model can accurately predict the mechanical strength of CSMRA at other ages after determining cement dosage, aggregate type, mineral proportion and 7 d strength.

Key words: construction waste, cement stabilized macadam, mechanical strength, growth law, prediction model

中图分类号:

TV42

张宇, 蒋应军, 范江涛, 许晓平, 俞晓松. 掺建筑垃圾水泥稳定碎石力学强度增长规律与预测模型[J]. 硅酸盐通报, 2024, 43(10): 3755-3764.

ZHANG Yu, JIANG Yingjun, FAN Jiangtao, XU Xiaoping, YU Xiaosong. Mechanical Strength Growth Law and Prediction Model of Cement Stabilized Macadam with Construction Waste[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(10): 3755-3764.

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