UHPC aggregate - river sand
UHPC aggregate - river sand：
- It acts as a skeletal filler to occupy voids between coarse aggregates, optimizing the particle packing density of UHPC and reducing the usage of cementitious materials.
- It enhances the workability of the fresh UHPC mix, improving its fluidity and moldability while preventing segregation or bleeding.
- It contributes to the mechanical properties of hardened UHPC, such as compressive strength and flexural strength, by forming a dense internal structure with cement paste and fibers.
- It helps control shrinkage of UHPC during hydration, reducing the risk of cracks and improving the material’s dimensional stability.
UHPC aggregate - river sand’characters：
It has a smooth and rounded particle shape (formed by long-term water erosion), which reduces friction between particles and improves the workability of UHPC without excessive water addition.
It features uniform particle size distribution, ensuring good packing efficiency and avoiding gaps that weaken the UHPC structure.
It has low impurity content (e.g., clay, silt, organic matter < 1%), which prevents adverse effects on the hydration of cementitious materials and the bond between aggregates and paste.
It offers stable chemical properties, being inert and non-reactive with UHPC’s cementitious components (such as Portland cement, silica fume), ensuring long-term durability of the material.
It has moderate water absorption (usually 1–3%), which helps regulate the water-cement ratio in the mix and improves the interfacial adhesion between sand particles and cement paste.
It has a smooth and rounded particle shape (formed by long-term water erosion), which reduces friction between particles and improves the workability of UHPC without excessive water addition.
It features uniform particle size distribution, ensuring good packing efficiency and avoiding gaps that weaken the UHPC structure.
It has low impurity content (e.g., clay, silt, organic matter < 1%), which prevents adverse effects on the hydration of cementitious materials and the bond between aggregates and paste.
It offers stable chemical properties, being inert and non-reactive with UHPC’s cementitious components (such as Portland cement, silica fume), ensuring long-term durability of the material.
It has moderate water absorption (usually 1–3%), which helps regulate the water-cement ratio in the mix and improves the interfacial adhesion between sand particles and cement paste.
Please make sure your contact information is correct. Your message will be sent directly to the recipient(s) and will not be publicly displayed. We will never distribute or sell your personal information to third parties without your express permission.
