Aminobenzenesulfonic acid super - plasticizer is selected though cement paste test , which be provided with high water - reducing property , low slump loss and good compatibility with cement . according to the request of super high early strength , admixture rf is obtained though tests to compare performances of different accelerators and admixtures . experimental research and analysis are carried out on coarse aggregate ' s grain - size effect and composite aggregate ' s bulk - density to take sensitivity of coarse aggregate into account 通過水泥凈漿試驗比較選擇了減水率高、坍落度損失小、與水泥適應性好的氨基苯磺酸鹽高效減水劑;針對超早強的性能要求,試驗比較了不同早強劑及早強性摻合料的性能表現(xiàn),研制了早強性能顯著、與高效減水劑和水泥相容性較好的rf摻合料;考慮到修補混凝土對粗集料粒徑的敏感性,對粗集料粒徑效應及混合集料堆積密度進行試驗研究與分析;并對修補混凝土的抗折、抗壓、新老界面粘結強度以及抗凍性等進行了試驗研究。