After a series of tests, a kind of C30concrete containing40%blending powdered coal ash has been prepared. It has been used in practical projects and achieved good economical and social benefits.
通过一系列的试验,研制出掺量达40%的C30粉煤灰混凝土,并成功地应用于实际生产,取得了较好的经济效益和社会效益。
After a series of tests, a kind of C30concrete containing40%blending powdered coal ash has been prepared. It has been used in practical projects and achieved good economical and social benefits.
通过一系列的试验,研制出掺量达40%的C30粉煤灰混凝土,并成功地应用于实际生产,取得了较好的经济效益和社会效益。
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