In this paper the usability of a quarry dust limestone powder in concrete applications substituted for fly ash as mineral admixture is investigated.

为了有效利用石粉资源，本文对石灰岩石粉代替粉煤灰作混凝土矿物掺合料的可用性进行了研究。

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The fly ash series dry mixing mortar powder has been developed by using low quality of fly ash.

利用低品质粉煤灰研制出粉煤灰系列干拌砂浆粉。

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The collection capacity of heavy metal ions by porous powder made from fly—ash is studied.

用实验的方法研究了用粉煤灰制取多孔粉末材料对重金属离子的富集能力。

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