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粉煤灰在公路桥梁防撞护栏砼中的应用 ,不仅可以改善砼的和易性 ,提高密实性和减少制品表面麻面、气泡等缺陷 ,而且可以获得较好的经济、社会效益
The application of fly ash in bumper guardrail of highway bridge can not only improve the workability of concrete, improve the compactness and reduce defects such as pockmarks and bubbles on the surface of the product, but also obtain better economic and social benefits