[1]张鑫玉,冯　威,孙　啸,等.自密实混凝土内掺淤泥的生态护坡材料[J].郑州大学学报(工学版),2025,46(03):90-96.[doi:10.13705/j.issn.1671-6833.2024.06.018]
　ZHANG Xinyu,FENG Wei,SUN Xiao,et al.Ecological Slope Protection Material with Self-compacting Concrete Incorporated with Silt[J].Journal of Zhengzhou University (Engineering Science),2025,46(03):90-96.[doi:10.13705/j.issn.1671-6833.2024.06.018]
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自密实混凝土内掺淤泥的生态护坡材料()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
46
期数:
2025年03期
页码:
90-96
栏目:
出版日期:
2025-05-13

文章信息/Info

Title:
Ecological Slope Protection Material with Self-compacting Concrete Incorporated with Silt
文章编号:
1671-6833(2025)03-0090-07
作者:
张鑫玉1;  冯　威2;  孙　啸1;  赵云鹏1;  芦　浩3
1.河海大学 水利水电学院,江苏 南京 210098;2.中国能源建设集团浙江省电力设计院有限公司,浙江 杭州 310012;3.南京水利科学研究院材料结构研究所,江苏 南京 210029
Author(s):
ZHANG Xinyu1;  FENG Wei2;  SUN Xiao1;  ZHAO Yunpeng1;  LU Hao3
1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; 2.China Energy Engineering Group Zhejiang Electric Power Design Institute Company, Hangzhou 310012, China; 3. Institute of Material Structure, Nanjing Hydraulic Research Institute, Nanjing 210029, China
关键词:
淤泥;  自密实混凝土;  生态护坡;  工作性;  强度;  孔隙结构
Keywords:
silt;  self-compacting concrete;  ecological slope protection;  workability;  strength;  pore structure
分类号:
TV431
DOI:
10.13705/j.issn.1671-6833.2024.06.018
文献标志码:
A
摘要:
针对预制生态砖护坡现场人工拼装劳动力需求大、转运损耗高等难题,同时考虑淤泥废弃物的资源化利用,提出了一种利用淤泥取代水泥胶凝材料制备自密实混凝土(SCC)作为非结构生态护坡替代预制生态砖护坡,从而起到降本增效的作用。首先,分析了淤泥的物理化学性质;其次,研究了淤泥掺量对工作性能、力学性能和孔隙结构的影响规律。结果表明:单掺淤泥使SCC工作性能下降,为满足SCC规范和施工要求,需相应增加减水剂用量。力学性能与淤泥掺量呈反相关,28 d抗压强度、劈拉强度和弹性模量均降低;淤泥的掺入影响SCC的孔结构,导致累积孔体积和孔隙率的增加。研究结果表明:内掺10%淤泥的SCC在坍落扩展度为700 mm的情况下,强度可达到C30,验证了其作为生态护坡材料的可行性。
Abstract:
Aiming at the problems of large labor demand and high transport loss in manual assembly of prefabricated ecological brick slope protection site, and considering the resource utilization of silt waste, a method of using silt as a cementitious material to prepare self-compacting concrete (SCC) for non-structural ecological slope protection was proposed. This approach replaced prefabricated ecological bricks and could reduce costs while increasing efficiency. In this study, the physicochemical properties of silt were analyzed and the effects of silt admixture on working properties, mechanical properties, and pore structure was investigated. The results indicated that the working performance of SCC declined with the addition of silt. To meet SCC specifications and construction requirements, the amount of water reducing agent increased correspondingly with the increase in silt mixing. The mechanical properties of the material decreased as the amount of silt increases. Specifically, the 28-day compressive strength, split tensile strength, and modulus of elasticity were all reduced. This was due to the effect of silt on the pore structure of SCC, which led to an increase in cumulative pore volume and porosity.The results of this study showed that SCC with 10% silt incorporated could reach the strength of C30 at a slump extension of 700 mm, which verified its feasibility as an ecological slope protection material.

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更新日期/Last Update: 2025-05-22