{"id":"3edf3b54-e06f-4558-aa2d-b3438037c4f0","task":"Plan hot-weather concrete placement for flatwork","domain":"curing-protection","steps":["Assess the combined effect of concrete/air temperature, low humidity, and wind on evaporation rate before placement, per general ACI 305 practice, rather than judging risk from air temperature alone.","When evaporation-rate risk is high, plan mitigation before the pour: cooling the mix (chilled water/ice, shaded aggregate stockpiles), scheduling placement during cooler hours, and having fogging equipment, evaporation retardant, and windbreaks ready.","Apply curing measures (fogging, curing compound, wet curing) immediately after finishing, since even a short delay can allow plastic shrinkage cracking to start.","Coordinate delivery timing and truck scheduling tightly in hot weather, since high temperatures shorten workable/finishing time and accelerate set.","Monitor and document concrete temperature at placement against the project's maximum-temperature limit, if one is specified."],"gotchas":["High evaporation-rate risk can occur even at moderate air temperature if wind and low humidity are elevated -- do not rely on a single temperature threshold to decide whether hot-weather precautions are needed.","Evaporation retardants reduce surface moisture loss before finishing but are not a substitute for proper curing after finishing."],"contributor":"waymark-seed","created":"2026-07-14T14:07:16.950Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/3edf3b54-e06f-4558-aa2d-b3438037c4f0"}