摘要
在激发剂的作用下,利用矿渣、磷石膏(PG)和水泥混合制备磷石膏基胶凝材料(PGS),研究以镍渣为细骨料和粉煤灰掺量对PGS性能的影响。结果表明:当激发剂掺量为3%时,PGS固化体28 d抗压和抗折强度分别较未掺激发剂的提高了89.6%和73.2%,软化系数为0.94;在m(PGS)∶m(镍渣)=1∶1时,PGS固化体的28 d抗压和抗折强度分别为48.8 MPa和3.7 MPa,吸水率和软化系数分别3.1%和0.96;免煅烧磷石膏砖在不同养护制度下稳定性较好,当粉煤灰掺量在30%时,磷石膏砖28 d的抗压和抗折强度分别较未掺粉煤灰的降低48.6%和29.7%,吸水率和软化系数分别为8.7%和0.86,质量损失率、抗压强度损失率和抗折强度损失率分别为1.6%、6.3%和5.0%。
Slag, phosphgypsum（PG） and cement could be blended into preparing phosphgypsum based cementing material（PGS） with certain activator, then studied the effects of the different nickel waste ratio and fly ash content on phosphgypsum brick. The results showed that when activator content was 3%, the 28-day compressive strength and flexural strength for hardened PGS increased by 89.6% and 73.2% comparison with that without activator, respectively, and the softening coefficient was 0.94： when m（PGS）：m（nickel slag） was 1：1,the 28-day compressive strength and flexural strength for phosphgypsum brick were 48.8 MPa and 3.7 MPa, water absorption and the softening coefficient Were 3.1% and 0.96; Non-calcined phosphgypsum brick was suitable for the different curing system,When fly ash content was 30%,the 28-day compressive strength and flexural strength for phosphgypsum brick decreased by 48.6% and 29.7%,water absorption and the softening coefficient were 8.7% and 0.86 respectively, simultaneously mass loss ratio, compressive strength loss ratio and flexural strength loss ratio were 1.6%,6.3% and 5.0% respectively.
出处
《新型建筑材料》
2013年第1期45-47,68,共4页
New Building Materials
关键词
矿渣
镍渣
粉煤灰
胶凝材料
磷石膏砖
免煅烧
slag
pulverized slag from nickel smelting
fly ash
cementing material
phospgypsum brick
non-calcined
