Special cementing material for preparing wear-resistant ultra-high performance concrete
A cementitious material and ultra-high-performance technology, applied in the field of concrete, can solve the problems of low strength, high flexural strength, low strength, etc., and achieve the effect of promoting strong bonding, improving bonding performance, and improving wear resistance.
Active Publication Date: 2021-08-31
TIANJIN CEMENT IND DESIGN & RES INST
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Abstract
The invention discloses a special cementing material for preparing wear-resistant ultra-high performance concrete. The special cementing material is prepared by uniformly dry-mixing the following raw materials in parts by weight: 65-75 parts of Portland cement clinker powder, 20-30 parts of high-iron and high-belite sulphoaluminate cement clinker powder, and 5-10 parts of gypsum powder. The proportioning parameters of the high-iron and high-belite sulphoaluminate cement clinker comprises the alkalinity coefficient Cm value is 1.2-1.4, the fCaO is 3-5%, and the fSO3 is 2-3%; and the mineral comprises 45-50% of C2S mineral, 20-26% of mineral, 20-25% of C4AF mineral, 3-5% of CaSO4 mineral, and 2-4% of fCaO mineral. The wear resistance of the special cementing material is remarkably improved by 40% compared with that of Portland cement, and reliable technical support is provided for improving the wear resistance of the wear-resistant UHPC material.
Application Domain
Solid waste management
Technology Topic
AluminateHigh performance concrete +5
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PUM
Property | Measurement | Unit |
Specific surface area | 400.0 ~ 450.0 | m²/kg |
Specific surface area | >= 20000.0 | m²/kg |
Particle size | 1.0 | mm |
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