High workability concrete for piling works - a comparative study
Citation
Asian Architect & Contractor, v.15, no.7, 1985, pp. 42-47
Abstract
(1) Synopsis
(2) Introduction
(3) Method
(a) Materials
(b) Laboratories
(c) Initial mix design
(d) Subsequent procedures
(e) Mixing procedure
(i) Conventional concrete
(ii) Superplasticised concrete
(f) Admixture dosage
(4) Discussion of results
(a) Plastic density
(b) Temperature
(c) Setting and stiffening times
(d) Rate and capacity of bleeding
(e) Water addition
(f) Air content
(g) Compressive strength
(5) Benefits of the superplasticiser system
(a) Benefits to the concrete supplier
(i) Balling of cement and fines
(ii) Increased load size
(iii) Quality control
(b) Benefits to the contractor
(i) Full capacity truck loads may be delivered to site by the concrete supplier
(ii) The flexibility of site addition of the superplasticiser
(iii) Longer slump retention
(iv) Longer retardation in stiffening and setting times
(v) High workability flowing concrete
(vi) No additional costs
(c) Benefits to the specifier or client
(i) Reduction in free water content
(ii) Increased strengths at all ages
(iii) Extended stiffening and setting times
(iv)Lower air contents
(v) Greater quality assurance
(6) Conslusions
(7) Appendix I
(a) Suggested specification for tremie concrete for piling works
(8) Appendix II
(a) Site supervision of superplasticised tremie concrete - a check list
Description
Type
Article
Format
Date
1985
Language
en