【摘要】：基于正交試驗(yàn),分析單方水泥用量、不同水膠比、再生粗骨料取代率及拉應(yīng)力狀態(tài)下不同應(yīng)力水平等各因素對再生混凝土路面磚的力學(xué)性能和抗碳化性能的影響,并用總功效系數(shù)法對配合比進(jìn)行優(yōu)化。試驗(yàn)數(shù)據(jù)表明:單方水泥用量、水膠比和再生粗骨料取代率是影響再生混凝土路面磚力學(xué)性能最顯著的因素;強(qiáng)度隨著單方水泥用量的降低而降低,隨著水膠比的增大而降低。再生粗骨料取代率在60%左右時(shí),抗碳化性能最好。用總功效系數(shù)法優(yōu)化,確定出最優(yōu)配合比,制備再生混凝土路面磚,滿足規(guī)范要求。
[Abstract]:Based on the orthogonal test, the effects of the amount of single-square cement, the ratio of water to binder, the substitution rate of recycled coarse aggregate and the stress level under tensile stress on the mechanical properties and carbonation resistance of recycled concrete pavement brick are analyzed. The mixture ratio was optimized by the method of total efficacy coefficient. The experimental data show that the most significant factors affecting the mechanical properties of recycled concrete pavement brick are the ratio of water to cement, the ratio of water to cement and the ratio of recycled coarse aggregate, and the strength decreases with the decrease of cement content and with the increase of the ratio of water to cement. When the substitution rate of recycled coarse aggregate is about 60%, the carbonation resistance is the best. The optimum mix ratio was determined by the method of total efficiency coefficient, and the recycled concrete pavement brick was prepared to meet the requirements of the code.
【作者單位】： 揚(yáng)州市職業(yè)大學(xué)土木工程學(xué)院;揚(yáng)州江海學(xué)院土木學(xué)院;
【基金】：揚(yáng)州市職業(yè)大學(xué)校級(jí)科研課題(11z11) 揚(yáng)州市科技計(jì)劃項(xiàng)目(YZ2013048-3)
【分類號(hào)】：TU522.1

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