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Updated: May 27, 2025

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method
06:26

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Published on: October 6, 2017

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大量填充复合材料的网络完整性:热稳定性,固化后硬度的发展和酸性软化

Mohammed Aldhafyan1,2, Abdel-Basit Al-Odayni2, Waseem Sharaf Saeed2

  • 1Restorative Dental Sciences Department, College of Dentistry, King Saud University.

Dental materials journal
|February 16, 2025
PubMed
概括

这项研究表明,酸性软化显著降低了散装复合材料的硬度. 酸暴露后硬度下降可以间接评估复合材料.

关键词:
大量填充复合材料的复合材料.交叉连接密度 交叉连接密度硬度 硬度 硬度 硬度聚合物网络完整性 聚合物网络完整性热重力测量分析分析

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Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials05:30

Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials

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Porosity in Cement Paste

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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Additives and Fillers in Concrete

Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
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