Concrete, useful to produce steel reinforced concrete railway sleepers, comprises cement, water, fine particles, flowing agent, fine aggregates, and coarse aggregate, which is partially recycled from the concrete?keyword=Concrete, useful to produce steel reinforced concrete railway sleepers, comprises cement, water, fine particles, flowing agent, fine aggregates, and coarse aggregate, which is partially recycled from the concrete专利查询检索|Concrete, useful to produce steel reinforced concrete railway sleepers, comprises cement, water, fine particles, flowing agent, fine aggregates, and coarse aggregate, which is partially recycled from the concrete?keyword=Concrete, useful to produce steel reinforced concrete railway sleepers, comprises cement, water, fine particles, flowing agent, fine aggregates, and coarse aggregate, which is partially recycled from the concrete专利申请-路标网

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