Recycling of water quenched slag and silica sand tailing for the synthesis of an eco-friendly permeable material

Liu, Jianlei; Shi, Xiaoxin; Zou, Qiong; Zhao, Tangjin; Zheng, Jie; Liu, Taoyong; Han, Lei; Ke, Yanxiong; Wang, Qikun

doi:10.1016/j.conbuildmat.2022.129310

Cited by 8 publications

(1 citation statement)

References 53 publications

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“…The characteristics of raw materials used are shown in Table 1. Aggregate is the quartz sand produced by Ling Shou County Yongshun Fruit Products Processing Co., Ltd., Lingshou, China, and it has high activity [31]. The waterreducing, defoamer, and calcium formate early strength agents were produced by Shanghai Ying Shirt Material Co., Ltd., Shanghai, China.…”

Section: Raw Materialsmentioning

confidence: 99%

Research into Preparation and Performance of Fast-Hardening RPC Mixed with Straw

et al. 2023

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Based on its characteristics of early strength, good toughness, and excellent mechanical and impact resistance, steel fiber-reinforced fast-hardening reactive powder concrete (RPC) is expected to become an alternative material used in the rapid repair of marine concrete structures. However, the steel fibers have also caused corrosion problems in coastal environments. To make doped fiber fast-hardening RPC more adaptable for use in ocean engineering, this study prepares fast-hardening RPC mixed with straw and studied the effects of straw content and curing age on its slump flow, setting time, and mechanical performance (flexural strength, compressive strength, and flexural toughness). The effects of straw addition on the compactness and hydration products of fast-hardening RPC were studied through macro- (ultrasonic analysis) and micro-scopic analysis (electron microscopy scanning and X-ray diffraction patterns). The straw content mentioned in this paper refers to the percentage of straw in relation to RPC volume. The results showed that straw reduced the fluidity of RPC slurry by 10.5–11.5% compared to concrete without straw, and it accelerated the initial setting of RPC slurry. When the straw content accounted for 1% of RPC volume, the setting rate was the fastest, with a increasing rate being 6–18%. Compared to concrete without straw, the flexural and compressive strength of fast-hardening RPC was enhanced by 3.7–30.5%. When the content was either 3% or 4%, the mechanical properties improved. Moreover, when the straw content accounted for 4% of RPC volume, the flexural toughness was the highest, with the increase rate being 21.4% compared to concrete without straw. Straw reduces the compactness of fast-hardening RPC.

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Section: Raw Materialsmentioning

confidence: 99%

Research into Preparation and Performance of Fast-Hardening RPC Mixed with Straw

et al. 2023

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From Joint Research Project (JRP) to Joint Research Center (JRC): A 10-Years Cooperation in Efficient Utilization of Mineral Resources

Zhu,

Han,

Zhang

et al. 2024

China-Africa Science, Technology and Innovation Collaboration

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The global mineral resource development field is facing with common problems such as increasing mining depth, declining resource quality, tightening environmental constraints, and increasing security challenges. The development and utilization technology of mineral resources is in urgent need of innovation. As leading mining countries, starting from the joint research project (JRP) to the establishment of the China–South Africa Joint Research Center for Exploitation and Utilization of Mineral Resources (JRC), China and South Africa have cooperated in depth for over 10 years and made fruitful achievements. The fields of cooperation involve mining, mineral processing, automatic control of mineral processing, comprehensive utilization of tailings, waste catalyst recovery and lithium-ion battery materials. With support of Chinese and South African governments, the two sides jointly held over 10 academic seminars, exchanged more than 20 visiting scientists, introduced 7 South African experts to work in China, and were authorized dozens of patents.

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Microstructure Characteristics and Possible Phase Evolution of the Coal Gangue-Steel Slag Ceramics Prepared by the Solid-State Reaction Methods

Liu,

Wang,

et al. 2024

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Recycling of water quenched slag and silica sand tailing for the synthesis of an eco-friendly permeable material

Cited by 8 publications

References 53 publications

Research into Preparation and Performance of Fast-Hardening RPC Mixed with Straw

Research into Preparation and Performance of Fast-Hardening RPC Mixed with Straw

From Joint Research Project (JRP) to Joint Research Center (JRC): A 10-Years Cooperation in Efficient Utilization of Mineral Resources

Microstructure Characteristics and Possible Phase Evolution of the Coal Gangue-Steel Slag Ceramics Prepared by the Solid-State Reaction Methods

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