廢玻璃粉鋼筋混凝土梁抗彎性能試驗(yàn)研究*
甘元初，曾超，柯國(guó)軍，李松
- 摘 要
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（南華大學(xué)城市建設(shè)學(xué)院， 衡陽(yáng) 421001）［摘要］通過(guò)試驗(yàn)對(duì)5根廢玻璃粉鋼筋混凝土梁和1根普通鋼筋混凝土梁的抗彎性能進(jìn)行對(duì)比，研究了廢玻璃粉鋼筋混凝土梁的破壞形態(tài)、極限承載力和變形，在不同廢玻璃粉摻量和配筋率情況下，分析了廢玻璃粉鋼筋混凝土梁與普通鋼筋混凝土梁的開(kāi)裂荷載、正截面承載力、跨中撓度和最大裂縫寬度的異同，并通過(guò)試驗(yàn)結(jié)果驗(yàn)證了規(guī)范相應(yīng)公式的適用性。結(jié)果表明：各試件具有相似的破壞形態(tài)；隨著廢玻璃粉摻量的增加，試件的極限承載力略微降低，跨中撓度略有增加；隨著配筋率的增大，試件的極限承載力顯著增加，跨中撓度顯著減小?！痘炷两Y(jié)構(gòu)設(shè)計(jì)規(guī)范》（GB 50010—2010）中極限承載力和最大裂縫寬度計(jì)算公式適用于廢玻璃粉鋼筋混凝土梁，但撓度公式需要乘以1.38才能適用于廢玻璃粉鋼筋混凝土梁。［關(guān)鍵詞］廢玻璃粉; 鋼筋混凝土梁; 抗彎性能中圖分類(lèi)號(hào)：TU375.1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2014)21-0078-04Experimental study on the flexural behaviour of waste glass powder reinforced concrete beamsGan Yuanchu, Zeng Chao, Ke Guojun, Li Song(School of Urban Construction, University of South China, Hengyang 421001, China)Abstract: The flexural behaviour of five waste-glass-powder reinforced concrete beams and one common reinforced concrete beam was compared by experiment. The failure mode，ultimate bearing capacity and deformation of the waste-glass-powder reinforced concrete beams were studied, and the differences of the cracking load, normal section bearing capacity, mid-span deflection and the biggest crack width between the waste-glass-powder reinforced concrete beams and the common reinforced concrete beam under different amounts of waste glass powder and reinforcement ratios were analyzed. At the same time, the code formulas were verified．The results show that the failure pattern of the waste-glass-powder concrete beams is similar to that of the common reinforced concrete beam; the ultimate bearing capacity decreases slightly, and the mid-span deflection increases slightly with the increase of the waste glass powder; but the ultimate bearing capacity increases obviously and the mid-span deflection decreases obviously with the increase of the reinforcement ratio．The formulas in the Code for design of concrete structures (GB 50010—2010) can be used to calculate the ultimate bearing capacity and the biggest crack width of the waste-glass-powder reinforced concrete beams, but the deflection formula needs to be multiplied by a coefficient 1.38 to be adjusted.Keywords: waste-glass-powder; reinforced concrete beam; flexural behaviour*國(guó)家自然科學(xué)基金資助項(xiàng)目（51378247），湖南省“十二五”重點(diǎn)學(xué)科（土木工程）支持項(xiàng)目，衡陽(yáng)市科學(xué)技術(shù)發(fā)展計(jì)劃項(xiàng)目（2011HKJ02）。通訊作者：曾超，碩士，Email：838748150@qq.com。參考文獻(xiàn)［1］曲超，高志揚(yáng)，劉數(shù)華，等．廢棄玻璃粉在活性粉末混凝土中的應(yīng)用研究［J］.混凝土，2011（8）:82-84．［2］楊醫(yī)博，文梓蕓．廢玻璃在混凝土中的應(yīng)用［J］.工業(yè)建筑，2002，32(7)：78-80．［3］FEDERICO L M，CHIDIAC S E．Waste glass as a supplementary cementitious material in concrete-critical review of treatment methods［J］.Cement ＆ Concrete Composites，2009，31(8):606-610.［4］柯國(guó)軍，柏紀(jì)平，譚大維．廢玻璃用于水泥混凝土的研究進(jìn)展［J］.南華大學(xué)學(xué)報(bào)：自然科學(xué)版，2010，24(3)：96-102.［5］楊鳳玲，嵇銀行，李玉壽，等．廢玻璃細(xì)骨料混凝土的試驗(yàn)研究［J］.混凝土，2011(9):81-83.［6］SHI CAIJUN，WU YANZHONG，RIEFLER CHRIS,et al. Characteristics and pozzolanic reactivity of glass powders［J］.Cement and Concrete Research，2005，35（5）：987-993.［7］王海娟，張義順，趙繼芬，等．利用廢舊玻璃粉細(xì)摻料制備混凝土實(shí)驗(yàn)研究［J］.河南理工大學(xué)學(xué)報(bào):自然科學(xué)版，2012，31(5)：608-612.［8］過(guò)鎮(zhèn)海，時(shí)旭東．鋼筋混凝土原理和分析［M］.北京：清華大學(xué)出版社，2003: 30-42.［9］周靜海，張微，劉愛(ài)霞．再生粗骨料混凝土梁抗彎性能研究［J］.沈陽(yáng)建筑大學(xué)學(xué)報(bào)：自然科學(xué)版，2008，24（5）: 762-767.
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