Structural |
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Structural |
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- Portland cement, fine aggregate (sand) and water are combined into a pumpable structural grout.
- Structural grout has a typical mix water/cement ratio of 0.65 to 0.75. Excess water is expelled through the fabric, allowing a substantial reduction in the water/cement ratio of the in-place grout, thereby increasing its strength and durability.
- Excess mixing water expelled through the permeable fabric will reduce the volume of 27 cubic feet (0.76 cubic meters) of fluid structural grout to 25 cubic feet (0.71 cubic meters) of hardened grout.
- Structural grout consistency should be in the 9-11 second range when passed through the 0.75 inch (19 mm) orifice of the standard flow cone described in ASTM C 939. Tests utilizing a concrete slump cone are not appropriate.
- Pozzolan grade fly ash may be substituted for up to 35% of the cement as an aid to pumpability. Mixes designed with 5% to 8% air content will improve the pumpability of structural grout and the freeze-thaw resistance of hardened concrete.
| Material | Mix Proportions lb/yd3 (kg/m3) | After Placement lb/yd3 (kg/m3) |
| Cement | 750-850 (445-504) | 805-915 (478-543) |
| Sand | 2120-2030 (1258-1205) | 2290-2190 (1359-1299) |
| Water | 540-555 (320-329) | 460-470 (273-279) |
| Air | As Required | As Required |
| Products | Customer Service or Technical Support |