Development of an eco-friendly ultra-high performance concrete based on waste basalt powder for Sichuan-Tibet Railway

Li, Yirui; Zeng, Xiaohui; Zhou, Junliang; Shi, Ye; Umar, Hussaini Abdullahi; Long, Guangcheng

doi:10.1016/j.jclepro.2021.127775

Cited by 48 publications

(15 citation statements)

References 57 publications

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“…Thus, the substitution of the magnetite fine aggregate increases the friction among particles in a MUHPC mixture and causes a decrease in fluidity. Usually, when a UHPC’s fluidity is higher than 180 mm, it can be considered as a high-mobility concrete [ 32 , 36 ]. Notably, the fluidity values of the MUHPC mixtures were only slightly reduced, and even MUHPC with 100% replacement ratio can retain its high fluidity, which is important for applications in practical engineering construction.…”

Section: Resultsmentioning

confidence: 99%

“…The excellent performance of UHPC is, in part, due to its highly compact packing design. Good gradation makes it dense and low porosity makes it able to effectively resist the attack of harmful media, which is an important aspect in maintaining its high durability [ 35 , 36 ]. Due to the high cement content (900–1100 kg/m 3 ) in UHPC, the water binder ratios of UHPC are generally in the range of 0.18–0.3 [ 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Han

et al. 2022

Materials

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Nuclear technology benefits humans, but it also produces nuclear radiation that harms human health and the environment. Based on the modified Andreasen and Andersen particle packing model for achieving a densely compacted cementitious matrix, a new magnetite ultra-high-performance concrete (MUHPC) was designed using magnetite fine aggregate as a substitute for river sands with 0%, 20%, 40%, 60%, 80%, and 100% replacement ratios. The comprehensive properties of the developed MUHPC were tested and evaluated. These properties were fluidity, static and dynamic compressive strengths, high-temperature performance, antiradiation behaviors, hydration products, and micropore structures. Experimental results indicate that the developed MUHPC has high work performance and static and dynamic mechanical properties. The gamma ray shielding performance of MUHPC substantially improves with increased magnetite fine aggregate. Corresponding with 100% magnetite fine aggregate substitution, the linear attenuation coefficient of MUHPC is enhanced by 56.8% compared with that of ordinary concrete. Magnetite addition does not change the type of cement hydration products but improves the micropore structures of MUHPC and effectively reduces its total porosity and average pore diameter, thereby contributing to its mechanical and radiation shielding properties. The compressive strength and linear attenuation coefficient of the MUHPC can reach 150 MPa and 0.2 cm−1, respectively. In addition, the MUHPC also exhibits superior mechanical and radiation shielding performance at elevated temperatures (<400 °C). Finally, high strength and antiradiation performance support the use of MUHPC in radiation protection materials in the future.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Han

et al. 2022

Materials

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“…Li et al. [ 90 ] also found that about 4 and 19 % of embodied carbon dioxide emissions was saved at 25 and 30 % PC replacement with Waste Basalt Powder (WBP). The results revealed a decrease in embodied carbon dioxide emissions upon increasing the WBP content in the concrete mix without compromising the concrete compressive strength.…”

Section: Resultsmentioning

confidence: 99%

Effects of cashew nutshell ash on the thermal and sustainability properties of cement concrete

Oyebisi

Olutoge

Oyaotuderekumor

et al. 2022

Heliyon

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“…Tunnel waste rock is usually piled up in nearby dumps for landfill, which is not conducive to sustainable development. The crushed stone and stone powder in tunnel waste rock can be recycled to produce artificial sand [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…The scarcity of river sand resources in eastern China has restricted the development of local engineering construction. However, tunnel slag disposal resources are abundant, and tunnel slag machine-made mortar and concrete are relatively little used in engineering practice [ 8 , 37 ]. In addition, due to the fluctuation of stone powder content during the production of machine-made sand, there are fewer studies on the influence of sand quality changes on the properties of mortar and concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Properties of Mortar and Concrete Made with Tunnel Slag Machine-Made Sand

Tang

W²,

Liu

et al. 2022

Materials

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Machine-made sand is gradually replacing natural sand to achieve sustainable development. Experimental studies and gray-correlation analysis were used to study the properties of tunnel slag machine-made mortar and concrete. The properties of machine-made mortar with different stone powder content were analyzed through experiments. By analyzing the performance of machine-made sand concrete with equal amounts of cement replaced by stone powder, the optimum replacement ratio is obtained. Gray-correlation analysis was used to compare the degree of influence of fineness modulus and stone powder content on the performance of concrete. Scanning electron microscopy (SEM) and X-ray diffractometry (XRD) were used to analyze the microstructure of tunnel slag sand concrete. The test results showed that the flexural and compressive strengths of the machine-made sand concrete were greater than the standard sand with the same stone powder content. The 28-day flexural and compressive strengths had a maximum difference of more than 30%. The best stone powder content of the machine-made mortar is in the range of 5% to 8%. When the replacement cement content of stone powder is about 6%, the mechanical and working properties of machine-made sand concrete achieve the optimal state. The lower the stone powder content, the closer the mechanical and working properties of machine-made sand concrete and river sand concrete. The correlation between the performance of machine-made sand concrete and fineness modulus is the largest. When the stone powder content is low, it has almost no effect on the compressive strength of concrete. The results point out the direction for the quality control of tunnel slag machine-made sand concrete.

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Development of an eco-friendly ultra-high performance concrete based on waste basalt powder for Sichuan-Tibet Railway

Cited by 48 publications

References 57 publications

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Effects of cashew nutshell ash on the thermal and sustainability properties of cement concrete

Experimental Study on the Properties of Mortar and Concrete Made with Tunnel Slag Machine-Made Sand

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