— The waste had to be sun-dried for 24 h. The eggshell waste was ground into a fine powder and sieved through 150 µm sieve to allow for particle size homogeneity. Blast furnace slag is a waste material obtained from the production process of iron in a blast furnace. It was also sieved through 150 µm sieve to obtain a fine powder. 2.3.
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— Compared with traditional steel pipe concrete, steel-tube-steel-slag-powder-UHPC beam has high toughness, high elasticity, low shrinkage, and other excellent …
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— The applications of steel slag powder and steel slag aggregate in ultra-high performance concrete (UHPC) were investigated by determining the fluidity, nonevaporable water content, and pore structure of paste and the compressive strength of concrete and by observing the morphologies of hardened paste and the concrete fracture surface. The …
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— In view of the performance requirements of mass ultra-high performance concrete (UHPC) for the Pang Gong bridge steel cable tower in China, the UHPC incorporating of steel slag powder and hybrid expansive agents is optimized and prepared. The effects of steel slag powder and hybrid expansive agents on the hydration …
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— An eco-friendly UHPC was designed by the modified Andreasen and Andersen packing model and prepared with cement partially replaced by steel slag powder (SSP) and glass powder (GP) at a fixed mass ratio of 2:1. An improved strengths and resistance to drying shrinkage was obtained with a combined replacement of SSP and …
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— High-volume slag and ITP can be used to produce high performance green concrete. Abstract The effect of gypsum on the properties of composite binder containing high-volume slag and iron tailing powder was studied by measuring compressive strength, hydration heat, bound water content, hydration products, pore structure and morphology.
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— Slag reactivity in cementitious materials depends on achieving powder finesse. • One hour of high energy milling is sufficient to use slag as substitute to cement. • Conventional milling has negative impact on mechanical performance of cement paste. • High energy milled slag improves mechanical performance of cement paste.
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Slag powder is commonly used as a supplementary cementitious material in the production of concrete, enhancing its strength, durability, and overall performance. It can replace a portion of Portland cement, reducing CO2 …
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— The cementitious materials used in this study include P·O42.5R cement from Sichuan Yadong Cement Co., Ltd., lithium powder and grain slag from Meishan Huaqing Building Materials Sales Co., Ltd., the chemical composition, particle size distribution and mineral composition of the cementing materials are shown in Table 1 …
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— 1. Introduction. Ultra high performance concrete (UHPC) is a new type of concrete with the 28-day compressive strength in excess of 150 MPa (in China, compressive strength over 100 MPa) and has already been used in construction projects all over the world, especially containing the landmark projects [1], due to its ultra high …
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— Used in combination with Super-plasticizer admixture, steel slag powder can lead to economical high performance concrete for highway pavements with enhanced durability and reduced cement content. The properties of steel slag cement and concrete with different types of steel slag and different dosage of admixtures are studied in this …
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DOI: 10.1016/j.conbuildmat.2023.132358 Corpus ID: 259527624; Development of sustainable ultra-high-performance concrete containing ground granulated blast furnace slag and glass powder: Mix design investigation
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— Use of glass powder (GP) for ultra high performance concrete (UHPC) •. Effect of heating curing and water curing on performance of UHPC. •. 20% GP is …
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An eco-friendly UHPC was designed by the modified Andreasen and Andersen packing model and prepared with cement partially replaced by steel slag powder (SSP) and glass powder (GP) at a fixed mass ratio of 2:1.
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The development of self-compacting concretes with electric arc furnace slags is a novelty in the field of materials and the production of high-performance concretes with these characteristics is a further achievement. To obtain these high-strength, low-permeability concretes, steel slag aggregates and cupola slag powder are used. To prove the …
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— Local river sand (RS) with a fineness modulus of 2.84, density of 2.66 g/cm 3, and WA of 0.53% was used as the fine aggregate.The coarse aggregates included crushed stone (CA) and SS, which were obtained directly from a steel factory in Central Vietnam (chemical composition shown in Table 1).The physical properties of the coarse …
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— To address these challenges, this paper aimed to prepare high-performance composite blast furnace slag powder (CBFS) by incorporating red mud (RM), fly ash (FA), desulfurization gypsum (DG) and BFS, guided by the synergistic effects and the theory of medium-calcium systems.
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— Section snippets Materials. The slag used in this study was blast furnace slag, which occurred as waste material in iron and steel production. The specific surface area and specific gravity of slag, which was used as raw material in the production of geopolymer concrete, were 3996 cm 2 /g and 2.86 g/cm 3, respectively.The specific …
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— In this study, cement, lithium powder and grain slag were selected for compounding design with the aim of developing high performance cement-lithium powder-grain slag composite cementitious materials (CLG). Based on Mixture Design, 13 mixing ratios were designed and used to study the effect of CLG on the workability, mechanical …
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— This study is carried out to investigate the influence of steel slag powder (SSP) and expansive agents (EA) on the performance of UPHC, and then evaluate the feasibility of using the two minerals in …
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— To address these challenges, this paper aimed to prepare high-performance composite blast furnace slag powder (CBFS) by incorporating red mud (RM), fly ash …
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— This article uses steel slag powder and recycled concrete aggregates to prepare controlled low-strength materials (CLSM). The study investigates the influence …
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— Influence of K + and CO 3 2− in activator on high-temperature performance of alkali-activated slag-ceramic powder binary ... They found that geopolymer samples with SiO 2 /Al 2 O 3 = 2.25–3.00 exhibited good performance at high ... the authors found very limited information regarding the application of WCP to alkali-activated slag at high ...
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— By substituting phosphorous slag powder for a part of cement and keeping the water-binder ratio at about 0.14, UHPC specimens whose content of mineral admixtures, including phosphorous slag powder ...
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— Design and assessment of eco-friendly ultra-high performance concrete with steel slag powder and recycled glass powder. Author links open overlay panel Jing Xu a b, Peimin Zhan a, Wei Zhou a, ... Development of ultra-high-performance concrete using glass powder – Towards ecofriendly concrete. Constr. Build. Mater., 125 (2016), pp. 600-612.
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— The applications of steel slag powder and steel slag aggregate in ultra-high performance concrete (UHPC) were investigated by determining the fluidity, nonevaporable water content, and pore …
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— Finally, steel slag powder is introduced to further reduce the consumption of cement and the effect of SS powder was analyzed. The primary conclusions are as follows: ... Utilization of steel slag in ultra-high performance concrete with enhanced eco-friendliness. Constr. Build. Mater., 214 (2019), pp. 28-36, …
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— The interfacial properties of reactive powder concretes (RPCs), other known as ultra-high performance concrete (UHPC), containing steel slag powder and ultra fine fly ash are studied in this paper.
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DOI: 10.1016/j.powtec.2023.118356 Corpus ID: 257062528; Design and assessment of eco-friendly ultra-high performance concrete with steel slag powder and recycled glass powder
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— This study investigated the influences of ultrafine fly ash (UFA) and ultrafine slag powder (USL) on the compressive strengths, autogenous shrinkage, phase assemblage, and microstructure of magnesium potassium phosphate cement (MKPC). The findings indicate that the aluminosilicate fractions present in both ultrafine fly ash and …
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— Used in combination with Super-plasticizer admixture, steel slag powder can lead to economical high performance concrete for highway pavements with enhanced …
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