鎳礦渣地聚合物的制備及其增韌改性
發(fā)布時間:2018-05-28 23:56
本文選題:鎳渣 + 礦渣; 參考:《硅酸鹽通報》2017年07期
【摘要】:以工業(yè)固體廢渣-水淬鎳渣為主要原料,在堿激發(fā)劑作用下制備地聚合物。通過加入礦渣和纖維的方法對鎳渣地聚合物的力學性能進行優(yōu)化,并通過孔結構測試、斷面形貌分析等方法,對礦渣的增強作用和纖維的增韌作用進行研究。結果表明:礦渣的摻入有利于鎳渣地聚合物抗壓強度的提高和內部孔徑結構的改善。50℃養(yǎng)護7 d時,與鎳渣地聚合物相比,礦渣摻量為50%的鎳礦渣地聚合物的抗壓強度提高了209.7%,總孔隙率和最可幾孔徑尺寸分別降低了32.7%和53.1%。PP纖維的摻入能有效提高鎳礦渣地聚合物的韌性,當纖維摻量為1.6%時,50℃養(yǎng)護7 d的鎳礦渣地聚合物抗折強度和抗沖擊功分別較未摻纖維試樣提高了42.0%和114.3%,基體中纖維的拔出和拉斷消耗了荷載能量,提高了地聚合物的抗裂能力。
[Abstract]:The geopolymer was prepared from industrial solid waste residue and water quenched nickel slag under the action of alkali activator. The mechanical properties of nickel slag geopolymer were optimized by adding slag and fiber, and the reinforcing effect of slag and the toughening effect of fiber were studied by means of pore structure test and section morphology analysis. The results show that the addition of slag can improve the compressive strength of nickel slag polymer and the improvement of internal pore structure, compared with that of nickel slag ground polymer, when curing at .50 鈩,
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