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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.

Showing 1-5 of 21 Abstracts search results

Document: 

SP62-18

Date: 

January 1, 1979

Author(s):

D. Sadagopal, V. Ramakrishnan, William V. Coyle, and C. Besancon

Publication:

Symposium Papers

Volume:

62

Abstract:

This work presents the results of an experimental investigation to develop equations for estimating the potentional strength, modulus of elasticity, dry unit weight and pulse velocity of both regular and superplasticized concrete by using the Accerlerated Curing Method recommend by the American Society for Testing and Materials. A series of 24 concrete mixes (12 control and 12 superplasticized) were tested. The variables used were water-cement ratio, the initial temperature of concrete and air content.

DOI:

10.14359/17733

Document: 

SP62-19

Date: 

January 1, 1979

Author(s):

N.P. Mailvaganam

Publication:

Symposium Papers

Volume:

62

Abstract:

The trends in the rate of slump loss in superplasticized concrete due to the variation in temperature, concrete consistency, cement content and type, time of conventional admixtures in conjunction with the superplasticizer were determined.

DOI:

10.14359/17734

Document: 

SP62-10

Date: 

January 1, 1979

Author(s):

Richard C. Mielenz and James H. Sprouse

Publication:

Symposium Papers

Volume:

62

Abstract:

Four commercial high-range water-reducing admixtures based on naphthlanene-sulfonic acid-formaldehyde condensation products and two commerical admixtures of this type based on melamine-sulfonic acid formaldehyde condensates were investigated to determine their effect on the air-void system in fresh and hardened concrete.

DOI:

10.14359/17725

Document: 

SP62-11

Date: 

January 1, 1979

Author(s):

R.O. Lane and J.F. Best

Publication:

Symposium Papers

Volume:

62

Abstract:

An investigative program was conducted at the TVA Laboritories to determine the relative performance of several super water reducers. Both plain and fly ash concrete mixes were included to check the compatiabiilty of pozzolans with superplasticizers.

DOI:

10.14359/17726

Document: 

SP62-12

Date: 

January 1, 1979

Author(s):

V.M. Malhotra and D. Malanka

Publication:

Symposium Papers

Volume:

62

Abstract:

Superplasticizers are new types of water reducers which when added to concrete, cause large increases in its workability. The introduction of these water reducers has opened up new possibilites for concrete in construction. This report gives results of a laboratory investigation to determine the performance of superlasticizers in high-strength concrete with a water-cement ratio of 0.42.

DOI:

10.14359/17727

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