Dry Cast Pavers & Slabs
Concrete Masonry Units
Segmental Retaining Wall Units
Manufactured Stone Veneer Units
Dosage Rate: RainBloc 80 admixture dosage rate will vary depending on the desired benefits.
For water repellency: dosage range is 3 - 6 fl.oz/cwt (200 - 400 mL/100kg) of cementitious materials, with typical dosage at 4 fl.oz/cwt (260 mL/100kg) of cementitious materials .
For efflorescence control: dosage range is 1.5 to 3 fl.oz/cwt (100 - 200 mL/100kg). Due to variations in local materials, jobsite conditions or applications, dosages outside the recommended range may be required. Please consult your Technical Services Representative for more information.
Recommended Addition Time: Add majority of the batch water upfront with the aggregates and cement. Prewet up to 75% of total water.
Add admixtures at least 15 seconds after the cement gate closes (do not add on dry cement).
Recommended Mix Time: after all the admixtures are added
Pan Mixer: 45 seconds minimum (1 minute optimal)
Ribbon Mixer: 2 minute minimum (3 minute optimal)
Freeze Protection: RainBloc 80 must be protected from freezing. Do not store at temperatures below 32°F (0°C). The admixture is not usable after it has frozen.
Shelf life: One year in original unopened container.