Concrete suitable for internal pouring of steel latticed column and construction method of concrete

The invention relates to concrete suitable for internal pouring of a steel latticed column and a construction method of the concrete, and belongs to the technical field of concrete for buildings. The concrete suitable for being poured into the steel latticed column is prepared from the following components in parts by weight: 300 to 330 parts of Portland cement, 100 to 120 parts of fly ash, 730 to 750 parts of sand, 850 to 900 parts of pebbles, 30 to 50 parts of modified coal gangue, 12 to 20 parts of a composite additive, 0.15 to 0.2 part of an air entraining agent and 180 to 200 parts of water. The prepared concrete is good in fluidity, can be used for construction of structures with dense steel bars, narrow space and complex shapes, and is convenient to construct; the overall structure compactness is high, the volume stability is high, and curing shrinkage is reduced. 本发明涉及一种适用于钢格构柱内部灌注的混凝土及其施工方法，属于建筑用混凝土技术领域。本发明所述适用于钢格构柱内部灌注的混凝土，以重量份计，含有以下组分：硅酸盐水泥300-330份、粉煤灰100-120份、砂730-750份、石子850-900份、改性煤矸石30-50份、复合外加剂