本文關(guān)鍵詞：膠凝材料對高強(qiáng)混凝土孔隙和抗壓強(qiáng)度的影響　出處：《硅酸鹽通報(bào)》2014年11期 　論文類型：期刊論文

  更多相關(guān)文章： 微硅粉 粉煤灰 減水劑 抗壓強(qiáng)度 孔隙率

【摘要】：本文主要研究了不同替代量的微硅粉對普通混凝土和粉煤灰混凝土的孔隙和抗壓強(qiáng)度的影響。利用了SEM、EDS、粒度分布儀和金相顯微鏡分別分析了凝膠材料的微觀形貌、成份及混凝土的表面孔隙。結(jié)果表明,在普通混凝土和粉煤灰混凝土中加入微硅粉和減水劑,制備的高強(qiáng)混凝土28 d最大抗壓強(qiáng)度相比于普通硅酸鹽水泥混凝土分別提高了37%和48%。摻入微硅粉后,粉煤灰混凝土比普通混凝土7 d早強(qiáng)性的提高更明顯。早期的吸水率比終期的吸水率大很多,這表明微硅粉和粉煤灰在混凝土中的火山灰反應(yīng)是從養(yǎng)護(hù)7 d后才開始起明顯作用。
[Abstract]:This paper mainly studies the influence of different amount of micro silica instead of ordinary concrete and fly ash porosity and compressive strength. The use of SEM, EDS, particle size analyzer and microscope respectively analyzed the morphology of gel material, surface composition and concrete. The results show that adding silica fume and superplasticizer in common concrete and fly ash concrete, compared to high strength concrete prepared with 28 d maximum compressive strength than that of Portland cement concrete were increased by 37% and 48%. doped in silica fume, fly ash concrete is more obvious than that of ordinary concrete 7 d early strength improved. Early absorption rate is much higher than the rate of the final water. That volcano ash reaction micro silica fume and fly ash in concrete is from the maintenance after 7 d began to play significant role.

【作者單位】： 昆明理工大學(xué)材料科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金(51262016)
【分類號(hào)】：TU528
【正文快照】： Effect of Cementitious Materials on the Pore andCompressive Strength of High Strength ConcreteNI Cheng-lin,TAN Hong-lin,ZHOU Xiao-jun,YANG Ying-xiang,XIANG Chao(Kunming University of Science and Technology,Institute of Material Science and Engineering,Ku

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 鐵生年;姜子炎;汪長安;姜雄;;微波酸浸提高微硅粉純度工藝研究[J];人工晶體學(xué)報(bào);2013年10期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳寶t，

本文編號(hào)：1372199