文档介绍：摅要
对水泥混凝±中存程蛉碱及蒸危害人们已经鹰了较充分的认识。到毽前为止,憾界各濑发现了大量韵AAR破坏的事例,|盘泓经成为时承泥漫凝±建筑锈及梅传黔破坏藏影璃菸耐久瞧鹩忍释艨西孛袋严重酌~ 种。随着人们对濑凝土建构筑物耐久性要求的进~步提商,对水泥混凝士中趋胶结俸瘸鼹承漉豹毽戆瞧提窭了薮的簧求。鲡秘降低永混中碱鳓含量?如何提高水泥的性能?从而减轻水泥中碱的危害,抑制碱骨料反应对混凝土的破辐,褒摄亳建梅筑物耐久缝静丽鬟孪减轻茹l:境受赫戏为露静入捐瞀蘧关心静润题。本文以实际生产为研究对壤,就低械水泥热料的生产,利照工业废浚涮备离褴能复合低碱承泥两方面进行了试验研究。
逶过试验磺究发现,趱硅低碱骖岩配辩魏裹碱牯±醚料两方案靛生辩经 1400"C煅烧后,熟料中的f-Ca0均在l-o%以下。且远低予这个数。因此这掰个方寨懿生辩曩浇缝鼙然有优育安,餐均可竣谈为是爨嶷豹,簸控裁熬辩中碱含量的角度出发,高髓低碱砂岩配料掇然易烧性略羞,但仍不失为~个好熬配辩方案;离疆惫辕移簧配辩方案静簸毽控镪参数为:采震“三高”配方,,熟料的硅酸率2,6,,生料的细度接瀚在280 m2/kg。潋土静结论在实际豹工程应用中都得劐了证实;复合低
碱水泥各缌分不网的细度对其物理力学性髋的影噙是不一样靛,对鼍二其早嬲(3d)强度,影响的因素依次为熟料,粉煤灰,磷渣。而其后期(28d)强度影璃懿因素依次为磷渣,熬辩,粉煤获。复舍永泥的三静圭要或静静缨波的最佳控制参数是:熟料细度420 m2/kg,粉煤灰细度450 m2,l(g。磷渣细魔 500 i1"12是媛;褰温滚烧磷虿鬻、饔锈耪爨获等改{鲎外髓凌鹣热入,瓣复合水泥性能都有不同程度的作用。特别是高钙粉煤灰的加入,在细磨的条件下, 对掺有磷潦靛复台水泥静筚期强瘦肖疆显的改善作用。通避与普通稚酸盐水
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溅在水化热、初期水化产物、碱嚣料反应及磁久燃方匾的对比碰筑,证实复台诋碱承泥在瞧熊上箕霄优越谯。磷渣、粉煤获释工、监废渣的加入辩抑制碱嚣料反应提藏漫凝土的耐久性,降低承淀产品驰坯境负群其有积掇的意义。
蓑键键;蔽夤辍魔寝低藏熟辩复合低溅求淀磷渣粉漾获
ABSTRACT
People had sufficient cognition tO alkali that iS in cement—concrete and its harm。So far,the large numbers exarnpte of AAR has been discovered in many countries the world,AAR has already became to a kind of most serious Cause
that destroy the building ponent of cement concrete and affect its wear. Along with people improve the request of concrete building’S weal',the new request of performance of cement that has cementation fancfionary in cement· can take from content of alkali in cement?HOW can
improve performance of cement?Accordingly abate bane of alkali in cement, restrain breach of AAR inside concrete,improve the wear of building and abate circumstance's burthen has became the problem that been regarded at large by people paper takes practice production for our studying object,and
carries through two aspects of researches about production of low-alkali cement clinker and the high pound low-alkali cement make use of industry waste residue.
Through the researches,We found that raw material ofhiigh silicon low alkali posi