1. 湖北地矿建设工程承包集团有限公司,湖北,武汉,430050
2. 中国三峡建工(集团) 有限公司,四川,成都,610041
3. 深圳大学 土木与交通工程学院,广东,深圳,518060
4. 华中科技大学 土木与水利工程学院,湖北,武汉,430074
周永伟(1986–),男,高级工程师,硕士,主要研究方向为岩土工程,E-mail:ywzxmu@qq.com
蒲诃夫(1985–),男,教授,博士,主要研究方向为环境岩土工程,E-mail:puhefu@szu.edu.cn
纸质出版:2025
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周永伟, 刘金海, 蒲诃夫, 等. 絮凝−过滤−固化协同制备自密实流态固化土试验研究[J]. 广东工业大学学报, 2025, 42(2): 136–142.
Zhou Yongwei, Liu Jinhai, Pu Hefu, et al. An Experimental Study of the Synergistic Preparation of Self-compacting Fluid-like Solidified Soil by Flocculation-filtration-consolidation[J]. 2025, 42(2): 136-142.
周永伟, 刘金海, 蒲诃夫, 等. 絮凝−过滤−固化协同制备自密实流态固化土试验研究[J]. 广东工业大学学报, 2025, 42(2): 136–142. DOI: 10.12052/gdutxb.250025
Zhou Yongwei, Liu Jinhai, Pu Hefu, et al. An Experimental Study of the Synergistic Preparation of Self-compacting Fluid-like Solidified Soil by Flocculation-filtration-consolidation[J]. 2025, 42(2): 136-142. DOI: 10.12052/gdutxb.250025.
快速高效处理大量的高含水率泥浆已成为迫切的工程和环境问题,将其制备成自密实流态固化土是一种有效的资源化利用途径。通过室内试验探究了絮凝−过滤−固化协同制备自密实流态固化土的方法,分析了絮凝、过滤过程、固化剂掺量以及减水剂添加顺序和掺量等因素对固化土流动性和无侧限抗压强度的影响。研究结果表明,絮凝剂的使用能有效降低泥浆流动值,增强固化土的强度。过滤措施显著加快了自密实流态固化土的制备速度,1 h内即可达到所需流动性,且无侧限抗压强度是未过滤试样的2倍。掺加水泥可显著提高固化土的无侧限抗压强度,但对流动性影响不大。减水剂在絮凝剂和固化剂之后添加能够显著提升固化土的流动性,0.2%的掺量效果最佳。综上,使用絮凝−过滤−固化协同的处理方法能有效制备出流动性良好、孔隙率更低、强度更高的自密实流态固化土。
The urgent engineering and environmental challenge of efficiently processing large volumes of high-water-content sludge is addressed by transforming it into self-compacting flowable solidified soil
which serves as an effective resource utilization strategy. This study investigates the method of flocculation
filtration
and solidification in the laboratory preparation of self-compacting flowable solidified soil
analyzing the effects of the flocculation process
filtration process
admixture of solidifiers
and the addition of water-reducing agents on the fluidity and unconfined compressive strength of the solidified soil. Results indicate that the use of flocculants effectively reduces the flow value of the sludge and enhances the strength of the solidified soil. Filtration significantly accelerates the preparation of the self-compacting flowable solidified soil
achieving the desired fluidity within one hour and doubling the unconfined compressive strength compared with unfiltered samples. While the addition of cement significantly enhances the unconfined compressive strength of the solidified soil
it has a minimal impact on its fluidity. The optimal sequence for adding water reducers is after the flocculants and solidifiers
markedly improving the fluidity of the solidified soil
with a 0.2% dosage proving most effective. The comprehensive application of flocculation
filtration
and solidification processes successfully produces self-compacting flowable solidified soil with a lower porosity.
SONG D B, PU H F, ZHANG C X, et al . Experimental investigation on prefabricated horizontal drain-based vacuum dewatering-solidification combined method for treatment of dredged slurry[J ] . Chinese Journal of Geotechnical Engineering, 2023, 45(9): 1897-1906.
WU Y J, ZHOU Z, LU Y T, et al . Effects of pH value on stability, flocculation and consolidation characteristics of waste slurry[J ] . China Civil Engineering Journal, 2018, 51(9): 92-101.
PU H F, PAN Y F, DIBANGAR A, et al . Model test on dewatering of high-water-content dredged slurry by flocculation-horizontal vacuum two-staged method[J ] . Rock and Soil Mechanics, 2020, 41(5): 1502-1509.
LEI H Y, BAO Y L, FENG S X. Reinforcement effects and mechanisms of vacuum preloading combined with alkaline residue treatment on dredging sludge[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S2): 32-37.
HAO X J, WANG L, WANG H J, et al . Experimental and theoretical study on vacuum dewatering of waste shield clay slurry[J ] . Journal of Tongji University (Natural Science) , 2024, 52(9): 1409-1417.
LANG R Q, PEI L X, SUN L Q, et al . Experimental study on the flowability of freshly mixed solidified muds with different liquid limits[J ] . Rock and Soil Mechanics, 2023, 44(10): 2789-2797.
WANG W C, HUANG Y H, WANG S, et al . Experimental study on influence of plasticizer on fluidity of convection- solidified silt[J ] . Chinese Journal of G eotechnical Engineering, 2024, 46(8): 1605-1612.
DEVARAJ V, MANGOTTIRI V, BALU S. Sustainable utilization of industrial wastes in controlled low-strength materials: a review[J]. Environmental Science and Pollution Research, 2023, 30(6): 14008-14028.
ZHANG T, YUAN J, WANG W, et al . Efficient utilization of waste shield slurry and CDW fines to prepare eco-friendly controlled low-strength material[J ] . Journal of Cleaner Production, 2024, 444: 141343.
LING T C, KALIYAVARADHAN S K, POON C S. Global perspective on application of controlled low-strength material (CLSM) for trench backfilling-an overview[J]. Construction and Building Materials, 2018, 158: 535-548.
KALIYAVARADHAN S K, LING T, GUO M, et al . Waste resources recycling in controlled low-strength material (CLSM): a critical review on plastic properties[J ] . Journal of Environmental Management, 2019, 241: 383-396.
LEE K H, KIM J D. Performance evaluation of modified marine dredged soil and recycled in-situ soil as controlled low strength materials for underground pipe[J]. Journal of Civil Engineering, 2013, 17(4): 674-680.
TAN Z R, TAN H B, LYU Z L, et al . Effect of plasticizer type on properties of construction spoil based high-fluid backfill materials[J ] . Bulletin of the Chinese Society, 2022, 41(9): 3227-3233.
ZHANG Z M, FANG K, WANG Z J, et al . Zero discharge treatment technology for slurry and engineering properties of separated soil[J ] . Chinese Journal of Geotechnical Engineering, 2011, 33(9): 1456-1461.
XU Z H, ZHANG R J, XIAO H, et al . Study on formula and mechanism of chemical admixtures for slurry-like mud treated by physicochemical combined method[J ] . Construction and Building Materials, 2024, 419: 135434.
DU C L, PENG M G, LI Z W, et al . Experimental study on the effect of C-PAM and A-PAM on dewatering performance of waste mud[J ] . Journal of Physics: Conference Series, 2021, 2045(1): 012030.
WU S, LI X, JIANG P, et al . Dewatering characteristics of waste slurry from pipe jacking based on improved vacuum filtration method[J ] . Tunnelling and Underground Space Technology Incorporating Trenchless Technology Research, 2022, 130: 104727.
中华人民共和国住房和城乡建设部, 中国国家标准化管理委员会. 土工试验方法标准: GB/T 50123-2019[S]. 北京: 中国计划出版社, 2019.
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