FIELD: transport building, in particular concrete block for lining of highway constructions, preferably headings.
SUBSTANCE: claimed block is formed from concrete mixture containing (kg/m3 concrete mixture): cement - 300-370; granite chip of grade 5-10 mm and 10-20 mm in ratio of 1:1.8-2.35, respectively, - 1100-1210; quartz sand of grade from 0.16 to 5 mm containing the next total knocking (mass %) 2.5 mm - 3.2-6.0; 1.2 mm - 12.8-16.2; 0.6 mm - 35.8-54.1; 0.3 mm - 70.4-89.3; 0.16 mm - 100 - 650-750; granite sand from screening with particle size up to 5 mm - 60-75; milled quartz sand with specific surface of 2200-3500 cm2/g as filler - 30-100; water - 125-143.3; and superplasticizer - 0.8-1.0 % calculated as cement mass.
EFFECT: block of improved strength, freeze-resistance, water impermeability, and crack resistance.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| REINFORCED CONCRETE BLOCK OF PRECAST LINING FOR HIGHWAY TUNNELS | 2004 |
|
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| REINFORCED CONCRETE PRODUCT FOR SURFACE AND UNDERGROUND STRUCTURES | 2008 |
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| CONCRETE MIX AND ADDITIVE TO CONCRETE MIX | 2000 |
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| SELF-COMPACTING CONCRETE MIXTURE | 2016 |
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| METHOD FOR PREPARATION OF CONCRETE MIX FOR REINFORCED CONCRETE STRUCTURES | 2022 |
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| BUILDING COMPOSITION AND POWDERED ADDITIVE FOR BUILDING COMPOSITION (LIGNOPAN) | 2004 |
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RU2272008C1 |
