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因再生粗骨料来源的多途径,RAC(再生混凝土)棱柱体抗压强度将不同。为探索不同粗骨料来源RAC棱柱体抗压强度之间的差异性,选取最具典型代表性的旧房拆迁、高强桩基、市政工程、科学研究等四种不同粗骨料来源的废混凝土,经破碎加工成四种再生粗骨料,分别选取25%、50%、75%和100%四种取代率,同时掺入粉煤灰、硅微粉两种矿物掺合料,采用正交试验法,配置成四种不同粗骨料来源的RAC,测其棱柱体抗压强度,经比较与分析,得到再生粗骨料取代率和矿物掺合料是影响RAC棱柱体抗压强度的两个重要因素,再生粗骨料来源对RAC轴心抗压强度的影响不显著。
The RAC (Recycled Concrete) prismatic compressive strength will be different due to the multiple sources of recycled coarse aggregate. In order to explore the difference between the compressive strength of the different types of coarse aggregate RAC prismatic materials, select the most typical representative of the demolition of old houses, high-strength pile, municipal engineering, scientific research and other four different sources of coarse aggregate waste concrete , Were crushed into four kinds of recycled coarse aggregate, were selected 25%, 50%, 75% and 100% substitution rate of four, while mixing flyash, silica powder two mineral admixture, using orthogonal test Method, configured as four different sources of coarse aggregate RAC, measured the prismatic compressive strength, by comparison and analysis, get the replacement rate of recycled coarse aggregate and mineral admixtures are two of the impact of the compressive strength of the RAC prismatic Important factors, the source of recycled coarse aggregate RAC axial compressive strength of the impact is not significant.