Effect of various superplasticizers on rheological properties of cement paste and mortars

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Cement and Concrete Research; (United States)

DOI:https://doi.org/10.1016/0008-8846(94)90055-8· OSTI ID:7283891

Masood, I; Agarwal, S K ^[1]

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1. Central Building Research Institute, Roorkee (India)

The effect of eight commercial superplasticizers including one developed from Cashew Nut Shell Liquid (CNSL) at CBRI on the rheological properties viz. viscosity and flow of cement paste and mortars have been investigated. The viscosity measurements have been made at various shear rates (5--100 rpm). It is found that at higher rates (100 rpm) even with the low concentration of superplasticizers (0.1), the viscosity of the cement paste is more or less the same as that obtained with 0.6 % dosages of SPs at lesser shear rates. The effect of split addition (delayed addition) of superplasticizers on viscosity of cement paste and 1:3 cement sand mortar have also been studied. A decrease in viscosity due to split addition has been observed in the cement paste and there is an increase of 15--20 % in flow of mortars.

• OSTI ID: 7283891
• Journal Information: Cement and Concrete Research; (United States), Journal Name: Cement and Concrete Research; (United States) Vol. 24:2; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

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ADDITIVES
BUILDING MATERIALS
CEMENTS
FOOD INDUSTRY
INDUSTRIAL WASTES
INDUSTRY
MATERIALS
MORTARS
PLASTICIZERS
VISCOSITY
WASTE PRODUCT UTILIZATION
WASTES