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Polycarboxylate superplasticizers (PCEs) present a class of cement dispersants which exhibit a comb or brush-like structure. They consist of a trunk chain holding carboxylate groups and of pendant chains which are made of polyethylene or polyethylene/polypropylene glycols. Since their invention in 1981, several types of PCE products have been introduced and are manufactured commercially.

The PCE products include:

1 MPEG ¨C type PCEs
2 APEG ¨C type PCEs
3 HPEG-type PCEs
4. IPEG ¨C type PCEs
5. PAAM ¨C type PCEs

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