... superplasticizer, retarder, air entrainer and correction raw materials I.Product Overview HXB-I common pumping aid for concrete consists of superplasticizer, ... entrainer and correction raw materials. With addition of type HXB-I common pumping aid, the concrete properties can meet the ... by 20 to 30 percent, and the strength at 28 days increased further; 2,Pumping performance: Under the premise of the ...