In practice, concrete is mixed at a wide range of temperatures and also remains in service at different temperatures. There are some special problems involved in concreting in hot weather, arising both from a higher temperature of the concrete and, in many cases, from an increased rate of evaporation from the fresh mix. These problems concern the mixing, placing and curing of the concrete. Hot-weather concreting is not so much an unusual or a specialized process; rather, it requires taking certain recognized measures to minimize or control the effect of high ambient temperature, high temperature of the concrete, low relative humidity, high wind velocity, and high solar radiation. What is required on each construction project where any one or more of the above conditions exist is to develop appropriate techniques and procedures and to follow them rigorously.
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