Concrete is an artificial stone composed of cement, sand, gravel, water, and chemical additives.
After cement sets and hardens, it has a certain strength and durability.
Sand and gravel, as an important component of concrete, occupy a core position in the structural mechanical properties.
It accounts for about 70% of the total volume of concrete.
The particle size distribution, grading form, mud content, shape, and surface characteristics of sand and gravel all affect the packing density of aggregates, the bonding performance with cement slurry, and the mechanical properties of the interface transition zone.
This article aims to systematically analyze the specific impact of sand and gravel on the compressive strength of concrete from multiple dimensions, in order to provide strong support for the design and practice of high-performance concrete.
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