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Updated: Jul 15, 2025

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
11:14

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

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基于性激活的混合水泥和建筑元素与飞灰和建筑和拆除废弃物中的硫酸盐

William Valencia-Saavedra1, Rafael A Robayo-Salazar1, Ruby Mejía de Gutiérrez1

  • 1Composites Materials Group (CENM), School of Materials Engineering, Universidad del Valle, Calle 13 #100-00, E44, Cali 760032, Colombia.

Materials (Basel, Switzerland)
|September 28, 2023
PubMed
概括

本研究展示了如何使用飞灰 (FA) 和建筑和拆除废弃物 (CDW) 用性激活来创建混合式水泥材料. 添加波特兰水泥 (OPC) 提高了强度,并允许在结构应用中进行室温固化.

关键词:
混凝土是什么意思 混凝土是什么意思建筑和拆除废物的废弃物.飞行灰飞行灰是什么意思混合活性水泥的混合活性水泥预制元件的预制元件再循环聚合物的回收.硫酸酸是一种硫酸.

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Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
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Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
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Portland blast-furnace cement is made by blending Portland cement clinker with granulated blast-furnace slag, which accounts for 25 to 65 percent of the cement's weight. Despite its similarities to ordinary Portland (Type I) cement in terms of fineness and setting times, its early strength is lower, though it achieves comparable strength later on. It's particularly suited for mass concrete structures and marine environments due to its lower heat of hydration and superior sulfate...
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Additives and Fillers in Concrete01:29

Additives and Fillers in Concrete

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