<p>Supply and use of water reducing chemical admixture in concrete, complying ASTM C-494 Type-A of approved brand/origin/ manufacturer and supplied by only manufacturer's authorised dealer with certificate of origin. The admixture is to reduce quantity of mixing water required for normal workability and to maintain low water- cement (W/C) ratio, for improved concrete quality assurance. [PWD 07.19.1]<br>&nbsp;</p>