ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Role of Lignosulfonates as Superplasticizers

Author(s): M. R. Rixom and J. Waddicor

Publication: Symposium Paper

Volume: 68

Issue:

Appears on pages(s): 359-380

Keywords: admixtures; air entrainment; compressive strength; drying shrinkage; heat of hydration; lignin and derivatives; lignosulfonate; mechanical properties; mix proportioning; physical properties; plasticizers; water-reducing agents; workability.

DOI: 10.14359/6481

Date: 1/1/1981

Abstract:
The paper describes the assessment and application of the Tattersall two point workability test and a multipoint heat of hydration apparatus in a research project to develop a super-plasticizer based on lignosulphonates. The significance of vari-ables such as ionic type, molecular weight, and degree of sulpho-nation is presented. The application of these variables to produce a suitable lignosulphonate has resulted in a superplasti-cizer which is compared with melamine and naphthalene based pro-ducts. The paper concludes that a superplasticizer based on the new lignosulphonate material is suitable for the production of flowing concrete in terms of dosage requirement, workability extension, price, and compressive strength development.