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通过对高掺量粉煤灰碾压混凝土的力学性能的测试和对其中粉煤灰掺量的影响及提高水泥标号对粉煤灰激发效果的机理分析 ,得出以下结论 :高掺量粉煤灰碾压混凝土的早期强度随粉煤灰掺量的提高呈下降趋势 ,但随龄期增长增幅增大 ;提高粉煤灰掺量有利于降低碾压混凝土的脆性 ;提高水泥标号对高掺量粉煤灰碾压混凝土的早期强度有利 ,但降低了抗折强度的后期增幅。
Through the test of the mechanical properties of high-volume fly ash roller compacted concrete and the influence on the content of fly ash and the analysis of the mechanism of cement mark on the excitation effect of fly ash, the following conclusions are drawn: High-volume pulverized coal The early strength of ash-rammed concrete decreases with the increase of fly ash content, but increases with the increase of age. Increasing the content of fly ash helps to reduce the brittleness of roller compacted concrete; The early strength of fly ash roller compacted concrete is favorable, but the later increase of the flexural strength is reduced.