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| LYONS
MANUFACTURING, INC. |
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Construction Products Since 1957
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8900 Forney Road Dallas, Texas 75227-4505
Tel: 214/381-8100 Fax: 214/381-8158
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Tips For Hot Weather Applications
In applying repair mortars, hot weather is usually regarded as any
combination of weather factors, such as high air temperature, lower
relative humidity and wind, that can affect the repair mortar.
Repair mortars applied during these conditions can fail to perform
as expected and develop undesirable properties. Protective measures
will need to be taken on a windy day even when the air temperature
is not very high.
Following the below recommendations will help offset the effects of
hot weather conditions and will result in the repair material having
the desired characteristics.
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Work in the shade, if possible. Apply early in the morning and
late in the evenings to avoid direct sun. Protect the job from
wind, if necessary.
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Keep the repair material at a 70-75° F temperature. Keep the
repair material in the shade, out of the sun before mixing.
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Use cold water to cool off surfaces where material is to be
applied to get those surfaces as close as possible to the
temperature of the repair mortar.
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Chill the mixing liquid, if needed. Use ice water, if necessary
and appropriate.
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Mix the repair mortar as close to the repair area as possible
and place repair material immediately. Keep the time of mixing,
placing and finishing to a minimum. Do not over finish the material.
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Protect the material from rapid surface drying and beginning
curing after finishing.
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Refer to Hot Weather Concreting in ACI Manual of Concrete Practice
for more detailed information.
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