Utilization of lithium nitrate to mitigate alkali–silica reaction of architectural glass mortar: Characteristics and mechanisms

Deng, Ziming

doi:10.1016/j.conbuildmat.2021.125433

Cited by 17 publications

(1 citation statement)

References 42 publications

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“…Box–Behnken design is an efficient experimental design method which can reduce the number of experiments, lower the experimental cost, shorten the experimental time and significantly improve the experimental efficiency under the premise of guaranteeing the amount of information, and the experimental method has been widely used in traditional fields such as chemistry [ 28 , 29 ], biology [ 30 , 31 ], medicine [ 32 , 33 ] and engineering [ 23 , 24 ]. With the continuous development of new materials in recent years, the method also has a promising application in emerging fields such as recycled concrete [ 34 , 35 ] and high-performance composites [ 3 , 15 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study Based on Box–Behnken Design and Response Surface Methodology for Optimization Proportioning of Activated Lithium Slag Composite Cement-Based Cementitious Materials

Shao,

Zha,

Zhou

et al. 2024

Materials

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Cement-based cementitious materials occupy a central position in the construction industry, but the problem of high carbon dioxide(CO2) emissions from cement production has attracted global attention. To meet this challenge, finding low-carbon alternative materials has become a top priority in the research of new building materials. At the same time, the problem of large amounts of lithium slag piling up needs to be solved, and resource utilization has become its potential way out. In this study, the volcanic ash activity of lithium slag was activated by composite activation means of high-temperature calcination and sodium silicate, and it was used as an alternative mix to cement. The Box–Behnken design and response surface method (BBD-RSM) was utilized to optimize the ratio of activated lithium slag composite cement-based cementitious materials, and high-performance new solid waste cementitious materials were prepared. The results show that activated lithium slag composite cementitious materials activated lithium slag exhibit excellent performance when activated lithium slag mass fraction is 7.3%, the sodium silicate dosage is 8.8%, and water–solid ratio is 0.6:1. The composite cementitious material under this ratio shows excellent performance, with fluidity 235.69 mm, gelation time 73.54 s, water evolution rate 1.123%, 3d and 28d compressive strengths, respectively, are 11.54 MPa and 22.9 MPa. Compared with ordinary Portland-cement-based cementing materials, the uniaxial compressive strength, modulus of elasticity, and tensile strength at break of activated lithium slag cementitious material solidified body were increased by 34.33%, 36.43%, and 34.98%, and the compressive deformation and tensile deformation were enhanced by 37.78% and 40%. This study not only provides a theoretical basis and experimental foundation for the preparation of new solid waste cementitious materials, but also provides a new solution for the reinforcement of crushed rock bodies in engineering practice, which is of great significance for promoting the low-carbon development of the construction industry.

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