以板岩为集料的混凝土中碱集料反应及其抑制

Alkali-aggregate Reaction in Slate Concrete and Its Inhibition Mechanism

用快速砂浆棒法确定了以板岩矿为集料的混凝土中存在着较严重的碱集料反应,设计了一系列实验,分析了其引起的原因。在混凝土中引入一定量的碎石型陶粒、LiOH和粉煤灰等均可有效地抑制其碱集料反应。分析发现碎石型陶粒表面大量的孔洞吸收碱集料反应产生的膨胀物质,从而抑制了碱集料反应的破坏。

Rapid Mortar Bar is used to determine slate concrete existing more serious alkali-aggregate reaction,so designed a series of experiments and made an analysis of its causes. Introducing a certain amount of concrete rubble type slate ceramic,Li OH and fly ash,etc.,may effectively inhibit the alkaliaggregate reaction. Analysis found that a lot of gravel-type ceramic surface pores absorb alkali-aggregate reaction expansion material,thus inhibiting the destruction of alkali aggregate reaction.