Hauv seem no cov kev ua kom txhob raug ntawm lub ntsiab hom ntawm superplasticizers (SPs), kuj tseem hu ua qib siab dej-txo admixtures, tau nthuav tawm.
Thawj ntu yog nplooj siab rau tej kua polymers, uas yog theej yas los sis nruab nrab dej-txo admixtures. Kev siv ntawm cov tsis zoo no tau rov qab mus txog xyoo 1930s. Txawm hais tias qhov ua tau zoo ntawm cov tshuaj pleev ib txwm muaj tsawg dua piv nrog cov hluavtaws, nws tsim nyog hais txog lawv vim lawv tseem siv dav hauv kev ua vaj tse – feem ntau vim tias lawv cov nqi tsim khoom tsawg.
Tom ntej no, cov kab hluavtaws polymers tau piav qhia. Cov qeb no suav nrog qee feem ntawm SPs feem ntau siv, xws li polynaphthalene sulphonates (PNS), polymelamine sulphonates (PMS) thiab vinyl copolymer. Muaj peev txheej ntau dua ntawm cov sib txuas no ua rau lawv zoo li SPs lossis cov dej siab tsim dej siab (hauv kev sib piv nrog lignosulphonates lossis lwm qhov qis-lossis nruab nrab ntawm cov dej xa dej). Lawv tau qhia nyob rau xyoo 1960 thiab feem ntau hu ua electrostatic dispersants, txawm hais tias qee qhov qhia muaj kev cuam tshuam cov kab mob tsis haum. Lawv ua rau nws muaj peev xwm los tsim cov kev ua tiav siab zoo li daim ntawv txhim khu kev ntseeg tam sim no siv hauv cov qauv ntau. Kev siv ntawm SPs raug soj ntsuam nrog hauv Tshooj 16 (Nkinamubanzi li al., 2016).
