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Updated: Jul 5, 2025

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests
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Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests

Published on: March 7, 2025

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用颗粒化技术对水泥复合材料中二氧化碳封存的性能评估

Jeong-Bae Lee1, Jun-Hyeong Kim2, Byeong-Gi Min1

  • 1Department of Civil Engineering, Daejin University, 1007 Hoguk-ro, Pocheon-si 11159, Republic of Korea.

Materials (Basel, Switzerland)
|January 11, 2024
PubMed
概括

提高水泥复合材料中二氧化碳 (CO2) 的吸收对于水泥行业至关重要. 这项研究发现,虽然涂层氧化颗粒 (CCHG) 是有前途的,但使用高炉渣 (BFS) 和飞灰 (FA) 由于它们的填充剂和波佐兰效应,会对二氧化碳封存产生负面影响.

关键词:
二氧化碳是二氧化碳的一种物质.混凝土复合材料:混凝土复合材料是混凝土的复合材料.涂层涂层是一种涂层.颗粒化的颗粒化方法封存是一种封存.

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The fineness of cement directly influences the rate of hydration, as the hydration begins at the surface of the cement particles. In addition to hydration, the fineness of cement is vital for various properties of concrete including workability, gypsum requirement, and long-term behavior. The fineness of cement is represented in terms of the specific surface of cement which is typically measured in square meters per kilogram, with several methods available for this determination.
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Carbonation Shrinkage01:24

Carbonation Shrinkage

Atmospheric CO2 penetrates the concrete's pores and, in the presence of moisture, forms carbonic acid, which then reacts with calcium hydroxide in the hydrated cement, forming calcium carbonate. This process reduces the concrete's volume and is termed carbonation shrinkage.
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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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