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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 西安理工大學(xué) 省部共建西北旱區(qū)生態(tài)水利國家重點實驗室, 西安 710048）
［摘要］通過常溫養(yǎng)護條件下活性粉末混凝土力學(xué)性能正交試驗，選用普通硅酸鹽水泥和超細礦渣粉作為主要膠凝材料，研究了水膠比、粉煤灰摻量、硅灰摻量、石英粉摻量、膠砂比、鋼纖維摻量和減水劑含量對活性粉末混凝土抗壓強度和抗折強度等基本力學(xué)性能的影響。試驗結(jié)果表明，水膠比、鋼纖維摻量和減水劑含量對活性粉末混凝土的力學(xué)性能影響最為顯著，粉煤灰摻量對改善活性粉末混凝土的抗壓和抗折性能效果最好。在此基礎(chǔ)上，以常溫養(yǎng)護條件下活性粉末混凝土的高強度為目標(biāo)，通過大量的力學(xué)試驗，得到優(yōu)化的最佳因素水平組合為水膠比0-18、粉煤灰摻量20%、硅灰摻量25%、石英粉摻量20%、膠砂比1∶1-0、鋼纖維摻量3-0%、減水劑含量2-0%。
［關(guān)鍵詞］活性粉末混凝土； 常溫養(yǎng)護； 抗壓強度； 抗折強度； 正交試驗
中圖分類號：TU502+.6文獻標(biāo)識碼：A文章編號：1002-848X(2019)06-0092-06
Orthogonal test study on mechanical properties of reactive powder concrete under room temperature curing condition
Kou Jialiang1,2, Chen Junhao1, Zhang Haobo1,2
（1 School of Civil Engineering and Architecture, Xi′an University of Technology, Xi′an 710048, China；2 State Key Laboratory of Eco-hydraulics in Northwest Arid Region， Xi′an University of Technology, Xi′an 710048, China）
Abstract:Through orthogonal test of mechanical properties of reactive powder concrete under room temperature curing condition, ordinary Portland cement and superfine slag powder were selected as main cementing materials. The effects of water-cement ratio, fly ash content, silica fume content, quartz powder content, cement-sand ratio, steel fiber content and water reducer content on the compressive strength and flexural strength of reactive powder concrete were studied. The test results show that water-cement ratio, steel fiber content and water reducing content have the most significant effect on the mechanical properties of reactive powder concrete, and fly ash content has the best effect on improving the compressive and flexural properties of reactive powder concrete. On this basis, aiming at the high strength of reactive powder concrete cured at room temperature, through a large number of mechanical tests, the optimum combination of factors was obtained as follows: water-cement ratio of 0-18, fly ash content of 20%, silica fume content of 25%, quartz powder content of 20%, cement-sand ratio of 1∶1-0, steel fiber content of 3-0%, and water reducer content of 2-0%.
Keywords:reactive powder concrete; room temperature curing; compressive strength; flexural strength; orthogonal test
*國家自然科學(xué)基金資助項目(51408487)，中國住建部科學(xué)技術(shù)資助項目(2014-K2-037)，中國博士后科學(xué)基金第56批面上資助項目(2014M562437)，陜西省自然科學(xué)基金資助項目(2014JQ7292)，陜西省教育廳專項科學(xué)研究計劃資助項目(14JK1516)，陜西省博士后科學(xué)基金資助項目，西安市建設(shè)科技項目(SJW2015-09)，西安理工大學(xué)科學(xué)研究計劃資助項目(118-211403)。作者簡介：寇佳亮，博士，副教授， Email: jialiangkou0918@163.com。
