Not sure if I will need to leave this job until the winter or not. I need to replace about 10ft of concrete on the drive into the yard as its all cracked. Its about 12ft wide. Milk lorry comes every 2nd day. If I poured it straight after the milk lorry came would it ever be fit for the lorry 48 hours later? Is there anything that can be added to the drastic to speed up drying?