激发剂对脱硫石膏-粉煤灰砖的性能影响
|
摘要
以电厂排放的固体废弃物脱硫石膏、粉煤灰为主要原料,压制成型制备砖材,研究了激发剂对其物理力学性能的影响。研究结果表明:随着激发剂掺量的增加,脱硫石膏-粉煤灰砖的强度先升高后降低。粉煤灰掺量为40%,激发剂掺量为1%,脱硫石膏-粉煤灰砖在龄期14 d时,其抗压强度为6.99 MPa,同时其软化系数为0.75。
The desulfurized gypsum which is a kind of solid waste from a power plant and fly ash are used as the main raw materials, and the bonding bricks are made by pressing and molding. The effects of alkaline activator on the physical and mechanical properties of desulphurization gypsum-fly ash brick were studied. The results show that: The strength of desulphurized gypsum-fly ash brick first rises and then decreases with the increase of the amount of activator. When the amount of fly ash is 40%, the dosage of activator is 1%, the compressive strength of the desulphurized gypsum-fly ash brick is 6.99 MPa at the age of 14 days, while the softening coefficient of it is 0.75.
The desulfurized gypsum which is a kind of solid waste from a power plant and fly ash are used as the main raw materials, and the bonding bricks are made by pressing and molding. The effects of alkaline activator on the physical and mechanical properties of desulphurization gypsum-fly ash brick were studied. The results show that: The strength of desulphurized gypsum-fly ash brick first rises and then decreases with the increase of the amount of activator. When the amount of fly ash is 40%, the dosage of activator is 1%, the compressive strength of the desulphurized gypsum-fly ash brick is 6.99 MPa at the age of 14 days, while the softening coefficient of it is 0.75.
引文
[1]徐博,张璐,冯峰.脱硫石膏代替天然石膏生产空心砌块的研究[J].河南建材,2015(5):19-21.
[2]伍勇华,姚源,南峰,等.脱硫石膏-粉煤灰-水泥胶凝体系强度及耐久性能研究[J].硅酸盐通报,2014,33(2):315-320.
[3] CAO Z, CAO Y D, ZHANG J S, et al. Preparation and characterization of high-strength calcium silicate boards from coal-fired industrial solid wastes[J]. Metallurgy and Materials, 2015, 22(8):892-899.
[4]SMADIMM,HADDADRH, AKOUR AM.Potentialuseof phosphogypsum in concrete[J]. Cement&Concrete Research, 1999,29(9):1419-1425.
[5]周可友,潘亮,郎营.复合激发剂对脱硫石膏-粉煤灰胶结材抗压强度的影响[J].混凝土与水泥制品,2011(12):68-71.
[6]雷东移,郭丽萍,李东旭.原状脱硫石膏基水硬性胶凝材料体系的力学性能[J].东南大学学报(自然科学版),2018,48(1):157-164.
[7]马月文,林海燕,阳勇福,等.高强耐水脱硫石膏基胶结材的研制[J].新型建筑材料,2012,39(8):56-58.
[8]伍勇华,姚源,南峰,等.脱硫石膏-粉煤灰-水泥胶凝体系强度及耐久性能研究[J].硅酸盐通报,2014,33(2):315-320.
[9]陈瑜,高英力,王盛铭.粉煤灰-脱硫石膏双掺砂浆实验研究与应用[J].长沙理工大学学报(自然科学版),2010,7(2):75-80.
[2]伍勇华,姚源,南峰,等.脱硫石膏-粉煤灰-水泥胶凝体系强度及耐久性能研究[J].硅酸盐通报,2014,33(2):315-320.
[3] CAO Z, CAO Y D, ZHANG J S, et al. Preparation and characterization of high-strength calcium silicate boards from coal-fired industrial solid wastes[J]. Metallurgy and Materials, 2015, 22(8):892-899.
[4]SMADIMM,HADDADRH, AKOUR AM.Potentialuseof phosphogypsum in concrete[J]. Cement&Concrete Research, 1999,29(9):1419-1425.
[5]周可友,潘亮,郎营.复合激发剂对脱硫石膏-粉煤灰胶结材抗压强度的影响[J].混凝土与水泥制品,2011(12):68-71.
[6]雷东移,郭丽萍,李东旭.原状脱硫石膏基水硬性胶凝材料体系的力学性能[J].东南大学学报(自然科学版),2018,48(1):157-164.
[7]马月文,林海燕,阳勇福,等.高强耐水脱硫石膏基胶结材的研制[J].新型建筑材料,2012,39(8):56-58.
[8]伍勇华,姚源,南峰,等.脱硫石膏-粉煤灰-水泥胶凝体系强度及耐久性能研究[J].硅酸盐通报,2014,33(2):315-320.
[9]陈瑜,高英力,王盛铭.粉煤灰-脱硫石膏双掺砂浆实验研究与应用[J].长沙理工大学学报(自然科学版),2010,7(2):75-80.