- 摘 要
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(1 西安理工大學(xué)土木建筑工程學(xué)院， 西安 710048；2 陜西中輕輕工業(yè)工程院有限公司， 西安 710048)
［摘要］為研究玄武巖纖維摻量對混凝土耐久性能的影響規(guī)律，將分別含有0%，0.05%，0.1%，0.2%，0.3%的纖維摻量混凝土試塊（100mm×100mm×100mm）置于pH=3的硫酸溶液中進行腐蝕試驗。對各摻量混凝土試塊的腐蝕發(fā)展情況追蹤觀察，分析了腐蝕環(huán)境中玄武巖纖維混凝土孔隙率及離子濃度的變化規(guī)律；同時，對侵蝕后玄武巖混凝土的抗壓強度進行了試驗研究。試驗結(jié)果表明：加入0.1%纖維的混凝土耐酸腐蝕性能得到了較大提升，與普通混凝土相比，抗壓強度提高40%以上；但過量摻入纖維，反而起到不利作用。
［關(guān)鍵詞］玄武巖纖維； 耐久性； 硫酸腐蝕； 力學(xué)性能； 抗壓強度
中圖分類號：TU375文獻標識碼：A文章編號：1002-848X(2020)15-0091-05
Research on influence of basalt fiber addition on concrete durability under sulfuric acid environment
WANG Zhenshan1, XING Lixin1, WU Bo2, LIU Yun1, TIAN Jianbo1
(1 School of Civil Engineering and Architecture, Xi′an University of Technology, Xi′an 710048, China;2 China Light Industry Shaanxi Engineering Co.， Ltd., Xi′an 710048, China)
Abstract:In order to study the influence of basalt fiber addition on durability of concrete, the concrete test block (100mm×100mm×100mm) containing 0%, 0.05%, 0.1%, 0.2%, 0.3% basalt fiber, was respectively put in sulfuric acid solution of pH=3 for immersion corrosion test. The corrosion development of concrete samples with different amount of basalt fiber was followed up and observed, the variation law of porosity and ion concentration of basalt fiber reinforced concrete in corrosion environments were analyzed, and the compressive strength of basalt fiber reinforced concrete after erosion was studied by experiment at the same time. The results of the tests indicate: the acid corrosion resistance of concrete with 0.1% fiber is greatly improved, compared with common concrete, the compressive strength is increased more than 40%, but mixing excessive fiber has adverse effects.
Keywords:basalt fiber; durability; sulfuric acid corrosion; mechanical property; compressive strength
*國家自然科學(xué)基金 (51608441)，陜西省自然科學(xué)基礎(chǔ)研究計劃（青年人才項目）（2017JQ5032），中國博士后科學(xué)基金面上資助項目（2017M613174）， 陜西省住房和城鄉(xiāng)建設(shè)廳建設(shè)科技計劃項目（2016-K91）。
作者簡介：王振山，博士，副教授， Email：wangdayuwang@126.com。
