... superplasticizer, retarder, air entrainer and correction raw materials I.Product Overview HXB-I common pumping aid for concrete consists of superplasticizer, ... and correction raw materials. With addition of type HXB-I common pumping aid, the concrete properties can meet the ... the reference concrete, the slump of the concrete with HXB-I pumping aid is significantly increased by a net increase ≥ ...