In the current paper, effects of alkaline solution to binder ratio (Al/Bi) (i.e. 0.65, 0.75 and 0.85) on fracture parameters of steel fiber reinforced heavyweight geopolymer concrete (SFRHWGC) with different fiber volume fractions (V_f) (i.e. 0.5%, 1% and 1.5%) are investigated using work of fracture method (WFM) and size effect method (SEM). Moreover, relationship between each of the fracture parameters, the steel fiber volume fraction and the Al/Bi ratio is proposed in the form of a polynomial function. The results show that: (a) with increase in the steel fiber content, the fracture energy, the fracture toughness and the ductility increase significantly. (b) the effects of steel fiber content on the fracture parameters are more significant at higher ratios of the Al/Bi. (c) at V_f = 1.5%, the total fracture energy (G_F), the initial fracture energy (G_f) and the fracture toughness (K_IC) can be obtained approximately 95, 8 and 3 times that of control samples, respectively. (d) at V_f = 1.5%, the ductility indices such as the characteristic length (L_ch) and the effective size of the process zone (C_f) may be obtained approximately 24 and 8 times that of the control samples, respectively. (e) at a given volume fraction of steel fiber, as the Al/Bi ratio increases, the fracture energy and the fracture toughness reduce while the ductility increases. (f) at V_f = 1.5%, the ratios of the values of the fracture parameters such as G_F, G_f, K_IC, L_ch and C_f at Al/Bi = 0.85 to 0.65 are obtained equal to 0.84, 0.82, 0.71, 2.52 and 1.69, respectively. (g) as both the steel fiber content and the Al/Bi ratio increase, the G_F/G_f ratio increases. (h) the G_F/G_f ratio for the SFRHWGC is found to be equal to 35.21 ± 5.91%.

在当前的论文中，碱性溶液与粘结剂的比率（Al / Bi）（即0.65、0.75和0.85）对具有不同纤维体积分数（V _f）（即0.5）的钢纤维增强重型地质聚合物（SFRHWGC）的断裂参数的影响（％，1％和1.5％）使用断裂法（WFM）和尺寸效应法（SEM）的功进行研究。此外，以多项式函数的形式提出了各个断裂参数，钢纤维体积分数和Al / Bi比之间的关系。结果表明：（a）随着钢纤维含量的增加，断裂能，断裂韧性和延展性显着提高。（b）在较高的Al / Bi比下，钢纤维含量对断裂参数的影响更为显着。（c）在V _f ＝ 1.5％时，总断裂能（G _F），初始断裂能（G _f）和断裂韧性（K _IC）可分别获得约是对照样品的95倍，8倍和3倍。（d）在V _f  ＝ 1.5％时，可分别获得延展性指数，例如特征长度（L _ch）和处理区的有效尺寸（C _f），分别是对照样品的延展性指数的约24倍和8倍。（e）在给定的钢纤维体积分数下，随着Al / Bi比的增加，断裂能和断裂韧性降低，而延展性增加。（f）在V _f  = 1.5％时，断裂参数（例如G _F）的值之比得到Al / Bi ＝ 0.85至0.65时的G _f，K _IC，L _ch和C _f分别等于0.84、0.82、0.71、2.52和1.69。（g）随着钢纤维含量和Al / Bi比率的增加，G _F / G _f比率增加。（h）SFRHWGC的G _F / G _f比等于35.21±5.91％。