粉煤灰掺量为50%的大掺量粉煤灰混凝土(HVFAC),在标准养护、同条件养护和变温养护,不掺加膨胀剂和防水剂的条件下,其强度、应变和收缩等性能均能满足中央电视台(CCTV)新台址建设工程主楼C40P8大体积混凝土工程的要求。这有效地解决了厚度为10.8m基础底板的温差裂缝和最高温度低于65℃的问题。 With high content of fly ash fly ash concrete (HVFAC) with 50% fly ash, its strength, strain and shrinkage under the condition of standard curing, same condition curing and variable temperature curing without expansion agent and waterproofing agent Performance can meet the CCTV new site construction project main building C40P8 mass concrete project requirements. This effectively solves the problem of the temperature difference cracks of the base plate with a thickness of 10.8 m and the maximum temperature of less than 65 ° C.