废弃玻璃经球磨机研磨成粉可作为水泥砂浆的原料.本文通过正交试验研究了废弃玻璃粉掺量(0、10 %、20 %、30 %)、水胶比(0.35、0.4、0.5、0.6)、胶凝总量(420、450、480、500kg/m3)和玻璃着色剂种类等因素对水泥砂浆的力学性能影响规律.结果表明,随着废弃玻璃粉掺量的增加,砂浆试块的抗压强度先增大后降低.最佳玻璃粉掺量为10 %,水胶比为0.4,胶凝总量为 450kg/m3;对废弃玻璃粉水泥砂浆强度影响最显著的因素为玻璃粉掺量,其次为水胶比,而胶凝材料总量和着色剂对强度的影响很小.废弃玻璃粉的火山灰活性效应不明显.利用废弃玻璃粉作为掺合料生产水泥砂浆是可行的.
The waste glass grinded by ball milling into fine powder can be taken as a material of the cement mortar.The compressive strength of cement mortar was investigated by means of orthogonal test, taken content of waste glass powder added (0, 10%, 20% and 30%), water/cement ratio (0.35, 0.4, 0.5 and 0.6), total amount of binding materials (420, 450, 480 and 500kg/m3) and the colorant as the factors.The results indicated that with increase of the waste glass powders, the compressive strength of the mortar increases at first and then decreases.The optimum composition obtained from the orthogonal tests is as follows: the glass powder is 10%, water-cement ratio is 0.4 and total amount of binding materials is 450kg/m3.The most remarkable factor influencing the compressive strength of the glass powder cement mortar is the glass powder, followed by the water-cement ratio.While total amount of binding material and the colorant just show a little impact.Effect of the pozzolanic activity for the glass powder is not evident.It is believed the waste glass powder is feasible to add into a cement mortar.
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