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Updated: Jun 28, 2025

Expression of Cementitious Pore Solution and the Analysis of Its Chemical Composition and Resistivity Using X-ray Fluorescence
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Expression of Cementitious Pore Solution and the Analysis of Its Chemical Composition and Resistivity Using X-ray Fluorescence

Published on: September 23, 2018

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通过MicroXRF成像检查的低克林克剂工程水泥复合材料的硫酸盐耐受性

Connor Szeto1, Kimberly E Kurtis1

  • 1School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.

Journal of microscopy
|April 10, 2024
PubMed
概括

使用石灰石加粘土水泥 (LC3) 和飞灰的工程水泥复合材料 (ECC) 显示出出色的硫酸盐耐受性. 与传统的波特兰水泥 (PC) 相比,这些可持续材料提供了增强的耐用性和减少的环境影响.

关键词:
LC3 LC3 LC3 的意思是什么意思外部硫酸盐攻击聚烯纤维的使用再利用的灰可以回收.

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Sulfate Attack on Concrete

Sulfate attack on concrete is a deterioration process characterized by a whitish discoloration beginning at the edges and corners, accompanied by cracking and spalling. This phenomenon occurs when sulfates react with the components of hardened concrete, forming compounds like calcium sulfate and calcium sulfoaluminate which occupy more space than the substances they replace, causing the concrete to expand and disrupt.
Sulfates from sources like soil, groundwater, or industrial effluents...
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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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Microcracking in Concrete

Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
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Portland cement comes in several types, each with distinct properties and applications based on their chemical composition and hydration characteristics:
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The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
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