本文選題：陳積粉煤灰　切入點：物理性能　出處：《混凝土》2016年11期

【摘要】：粉煤灰加氣混凝土的迅猛發(fā)展,造成電廠新出產的粉煤灰資源短缺、供不應求。為此研究利用陳積的粉煤灰生產加氣混凝土顯得十分重要。從化學組成、礦物組成和微觀結構3方面對用于加氣混凝土的陳積粉煤灰物理性能進行分析�；瘜W組成方面:3個電廠的陳積粉煤灰均為低鈣粉煤灰;清鎮(zhèn)電廠、貴陽電廠和黔西電廠的陳積灰燒失量分別為10.14%、9.35%、6.32%,主要原因是陳積粉煤灰長期在露天堆存嚴重受潮及發(fā)生水化反應所致。礦物組成方面:對礦物組成進行X射線衍射分析,表明陳積粉煤灰與新粉煤灰的礦物組成基本一致。微觀結構方面:對礦物組成進行了激光共聚焦觀測,結果 3個電廠陳積粉煤灰顆粒表面均粗糙不平,主要原因為在露天堆存過程中,粉煤灰在雨水的侵蝕作用下發(fā)生了不同程度的化學反應,在表面生成了反應產物所致。
[Abstract]:With the rapid development of fly ash aerated concrete, the shortage of new fly ash resources in power plant, and the shortage of demand. Therefore, it is very important to study the production of aerated concrete by using old fly ash. The physical properties of aged fly ash used for aerated concrete were analyzed in three aspects of mineral composition and microstructure. In Guiyang Power Plant and Qianxi Power Plant, the burning loss of old ash is 10.14 / 9.35 and 6.32, respectively. The main reason is that the aged fly ash has been subjected to severe moisture and hydration reaction in the open air for a long time. The mineral composition is analyzed by X-ray diffraction. The results show that the mineral composition of the aged fly ash is basically the same as that of the new fly ash. In terms of microstructure, laser confocal observation of the mineral composition has been carried out, and the results show that the surface of the aged fly ash particles in three power plants is rough and rough. The main reason is that in the process of open-air storage, the chemical reaction of fly ash occurred in varying degrees under the action of Rain Water, and the reaction products were formed on the surface.
【作者單位】： 貴州師范大學材料與建筑工程學院;貴州源隆新型環(huán)保墻體建材有限公司;
【基金】：貴州省科技廳工業(yè)公關項目(黔科合GY字〔2014〕3008) 貴陽市工業(yè)公關項目(筑科合同【2012101】3-2號) 貴陽市白云區(qū)科學技術局(白科合同【2013】46號)
【分類號】：TU52
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本文編號：1696773