本文關(guān)鍵詞：煤矸石混凝土抗硫酸鹽侵蝕試驗研究　出處：《非金屬礦》2016年01期 　論文類型：期刊論文

  更多相關(guān)文章： 煤矸石混凝土 抗硫酸鹽侵蝕 干濕循環(huán) 抗壓強度

【摘要】：針對煤矸石混凝土結(jié)構(gòu)耐久性問題,制作煤矸石混凝土立方體試件,進行抗硫酸鹽侵蝕試驗,研究了粉煤灰摻量、水膠比和干濕循環(huán)次數(shù)對煤矸石混凝土耐久性的影響。結(jié)果表明:煤矸石混凝土抗壓強度隨干濕循環(huán)次數(shù)增加呈先升高后降低的趨勢;干濕循環(huán)15次時,煤矸石混凝土抗壓強度耐蝕系數(shù)與粉煤灰摻量呈負相關(guān),與水膠比關(guān)系不大;干濕循環(huán)大于30次時,煤矸石混凝土抗壓強度耐蝕系數(shù)與粉煤灰摻量呈正相關(guān),與水膠比呈負相關(guān),相關(guān)顯著性強弱表現(xiàn)為干濕循環(huán)90次干濕循環(huán)60次干濕循環(huán)30次。煤矸石混凝土抗硫酸鹽侵蝕能力能滿足一般建筑物要求,這為煤矸石混凝土應(yīng)用提供了試驗依據(jù)。
[Abstract]:Aiming at the durability problem of coal gangue concrete structure, the cubic specimen of coal gangue concrete was made, the sulfate corrosion resistance test was carried out, and the amount of fly ash was studied. The effect of water-binder ratio and dry-wet cycle times on the durability of coal gangue concrete. The results show that the compressive strength of coal gangue concrete increases first and then decreases with the increase of dry and wet cycles. When dry and wet cycles are 15 times, the corrosion resistance coefficient of coal gangue concrete compressive strength is negatively related to the content of fly ash, but not related to the ratio of water to binder. When the dry and wet cycles are more than 30 times, the corrosion resistance coefficient of coal gangue concrete compressive strength is positively correlated with the content of fly ash, and negatively correlated with the water-binder ratio. The correlation significant performance is 90 times dry and wet cycle 60 times dry and wet cycle 30 times. Coal gangue concrete sulfate corrosion resistance ability can meet the general building requirements. This provides the test basis for the application of coal gangue concrete.
【作者單位】： 遼寧工程技術(shù)大學土木與交通學院;
【基金】：國家自然科學基金(51008148、51274111) 遼寧省教育廳基金(L2013137)
【分類號】：TU528;TD849.5
【正文快照】： 阜新市作為較早的煤炭生產(chǎn)基地,開采歷史久,矸石存量大,廢棄矸石于露天條件下堆存形成“矸石山”,不僅占據(jù)農(nóng)田,且自燃時會產(chǎn)生大量CO、SO2和氮氧化物等有害氣體[1-4]。在混凝土生產(chǎn)過程中,采用自燃煤矸石替代碎石制備自燃煤矸石混凝土,是解決資源浪費和環(huán)境污染的一條重要途，

本文編號：1360530