[1]谭波,林奕安,张磊,等.低收缩砂岩洞渣水稳材料的制备及性能分析[J].华侨大学学报(自然科学版),2025,(2):168-175.[doi:10.11830/ISSN.1000-5013.202411004]
　TAN Bo,LIN Yian,ZHANG Lei,et al.Preparation and Performance Analysis of Low-Shrinkage Sandstone Cave Slag Water-Stabilized Materials[J].Journal of Huaqiao University(Natural Science),2025,(2):168-175.[doi:10.11830/ISSN.1000-5013.202411004]
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低收缩砂岩洞渣水稳材料的制备及性能分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
期数:
2025年第2期
页码:
168-175
栏目:
出版日期:
2025-03-20

文章信息/Info

Title:
Preparation and Performance Analysis of Low-Shrinkage Sandstone Cave Slag Water-Stabilized Materials
文章编号:
1000-5013(2025)02-0168-08
作者:
谭波1; 2;  林奕安1; 2;  张磊3;  黎官福1; 2;  邹可轩1; 2;  陈平1; 2
1. 桂林理工大学 土木工程学院, 广西 桂林 541004;2. 桂林理工大学 广西绿色建材与建筑工业化重点实验室, 广西 桂林 541004;3. 中交路桥南方工程有限公司, 北京 101100
Author(s):
TAN Bo1; 2;  LIN Yian1; 2;  ZHANG Lei3; LI Guanfu1; 2;  ZOU Kexuan1; 2;  CHEN Ping1; 2
1. School of Civil Engineering, Guilin University of Technology, Guilin 541004, China; 2. Guangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Guilin 541004, China; 3. Road and Bridge South Engineering Limited Company, Beijing 101100, China
关键词:
级配设计;  水稳材料;  粉煤灰;  力学性能;  收缩性能
Keywords:
gradation design;  water-stabilized material;  fly ash;  mechanical performance;  shrinkage performance
分类号:
U414
DOI:
10.11830/ISSN.1000-5013.202411004
文献标志码:
A
摘要:
针对砂岩洞渣水稳材料强度偏低、收缩量大的问题,通过逐级填充法结合i法设计级配和掺入粉煤灰来制备低收缩水稳材料,并通过开展力学试验、干缩试验和干湿循环收缩试验研究其性能规律。试验结果表明:当粗、细集料质量比为65∶35时,混合料具有较强的力学性能;掺入粉煤灰的混合料早期强度偏低,后期强度会提高,龄期60 d时,其力学性能明显优于试件S1的混合料,最佳粉煤灰掺量(质量分数)为9%,掺量为9%的粉煤灰比未掺粉煤灰混合料的干缩应变降低了41%,干缩系数降低了48%;试件在经历干湿循环后,当次干湿循环的收缩应变都大于0次干湿循环时的收缩应变,掺入粉煤灰可以降低干湿循环作用的影响。
Abstract:
In order to solve the problem of lower strength and high shrinkage of sandstone cave slag water-stabilized materials, the low-shrinkage water-stabilized materials were prepared by step-by-step filling method, combining with the i-method designing gradation and mixing fly ash, and the performance were investigated by mechanical tests, dry-shrinkage tests, and dry-wet cycle shrinkage tests. The results of the experiment show that, when the mass ratio of coarse aggregates to fine aggregates is 65∶35, the mixture has stronger mechanical performance. The early strength of the mixture mixed with fly ash is lower, the late strength increases. The mixture performance is significantly better than those of the piece S1 at age 60 d, the optimal mixing amount of fly ash(mass fraction)is 9%. Comparing to mixture with no fly ash, 9% fly ash decreases the dry shrinkage strain by 41%, and the dry shrinkage coefficient by 48%. After dry-wet cycle, the shrinkage strain of second dry-wet cycle is greater than the shrinkage strain without dry-wet cycle, and the mixing fly ash reduces the dry-wet cycle effects.

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备注/Memo

备注/Memo:
收稿日期: 2024-11-08
通信作者: 谭波(1977-),男,教授,博士,主要从事路基路面工程及新型建筑材料的研究。E-mail:bbsz2004@163.com。
基金项目: 国家自然科学基金资助项目(52062009)https://hdxb.hqu.edu.cn/
更新日期/Last Update: 2025-03-20