New Technology of Bulky Concrete Maintenance Temperature Automatic Regulate and Control for Resist Crack HE Pei-ling(Departement of Structure Engineer, Nanjing Institute of Technology, Nanjing 211167,China)The article aimed at bulky concrete that was easy to lead crack in high quantity of heat, discussed the crack mechanism and opened harmfulness. Put forward that water flooding in puddle for retain hot and store water on top face, then cover on side for curing; bed store water on top face, then bed cover on side for curing; hang fiber cloth with high temperature resistant; waterproof and seal up set hot steam or wind technology; measure automatic regulate and control in maintenance temperature.bulky concrete; control; crack