人工砂骨料砂浆孔隙结构及力学特征研究

doi:10.11896/cldb.25020126

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Abstract With the gradual consumption of natural sand, artificial sand has been widely concerned to replace natural sand as building aggregate. In this work, nuclear magnetic resonance (NMR) technique is used to analyze the pore structure distribution characteristics of five kinds of aggregate graded mortar, and fractal theory is introduced to characterize them. The correlation between aggregate grading characteristics and multi-scale parameters of mortar is studied. The results show that with the increase of aggregate specific surface area, the total porosity of mortar decreases gradually, while the compressive strength and elastic modulus increase gradually. Water-saturated mortar is mainly composed of micropores and movable fluid pores. The formation of pore structure and the change of mechanical characteristics are influenced by both specific surface area and aggregate packing density, among which the strength is mainly influenced by the strength of aggregate itself and the strength of interfacial transition zone.

Key words： aggregate grading cement mortar pore structure mechanical characteristics fractal dimension

Published: 25 February 2026 Online: 2026-02-13

CLC number:

TU525

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	Articles by authors
	LIU Yao
	DENG Hongwei
	JIANG Zhen
	WANG Peng
	YU Songtao

Cite this article:

LIU Yao,DENG Hongwei,JIANG Zhen, et al. Pore Structure and Mechanical Strength Characteristics of Artificial Sand Aggregate Mortar[J]. Materials Reports, 2026, 40(4): 25020126-7.

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https://www.mater-rep.com/EN/10.11896/cldb.25020126 OR https://www.mater-rep.com/EN/Y2026/V40/I4/25020126

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