Development of Environmentally Friendly and Economical Flood-Prevention Stones Based on the Sediments of the Yellow River.

IF 5 3区 化学 Q1 POLYMER SCIENCE Gels Pub Date : 2024-09-27 DOI:10.3390/gels10100622
Ying Liu, Hao Xiao, Yongxiang Jia, Yajun Lv, Li Dai, Chen Yang
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Abstract

The deposition of Yellow River sediment in the middle and lower reaches is a significant factor in the siltation of reservoirs and the occurrence of serious flooding along the river. The efficient and valuable utilization of Yellow River sediment has already become a key research topic in this field. In this study, we have employed Yellow River sediment as the primary material, in conjunction with commercially available slag, fly ash, and quicklime as the binder, to develop a novel type of artificial flood-prevention stone. Following a 28-day standard curing procedure, the highest compressive strength of the prepared artificial stone was recorded at 4.29 MPa, with a value exceeding 0.7 MPa under wet conditions. The results demonstrated that the prepared artificial stone met the specifications for artificial flood-prevention stones. The curing mechanism, as evidenced by analyses from SEM and XRD testing, indicated that the alkali excitation process in the binder, which produced C-A-S-H gel, was the key factor in enhancing the compressive strength of the specimens. Notably, an evaluation of the amount of CO2 emissions and the cost of the artificial stone concluded that the preparation process was both environmentally friendly and cost-effective.

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基于黄河泥沙开发环保经济型防洪石。
黄河泥沙在中下游的沉积是造成水库淤积和沿河发生严重洪涝灾害的重要因素。如何高效、有价值地利用黄河泥沙已成为该领域的重点研究课题。在这项研究中,我们以黄河泥沙为主要材料,结合市售的矿渣、粉煤灰和生石灰为粘合剂,开发了一种新型的人工防洪石。经过 28 天的标准固化程序,所制备的人造石材的最高抗压强度达到 4.29 兆帕,在潮湿条件下的抗压强度值超过 0.7 兆帕。结果表明,制备的人造石符合人造防洪石的规格要求。扫描电镜和 XRD 测试分析表明,固化机理表明,粘结剂中的碱激发过程产生了 C-A-S-H 凝胶,是提高试样抗压强度的关键因素。值得注意的是,对人造石的二氧化碳排放量和成本进行评估后得出结论,制备过程既环保又具有成本效益。
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来源期刊
Gels
Gels POLYMER SCIENCE-
CiteScore
4.70
自引率
19.60%
发文量
707
审稿时长
11 weeks
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