Evaluation of Portland limestone cements for use in concrete construction

The paper describes a study carried out to examine the performance of concrete produced using combinations of Portland cement (PC) and limestone (LS), covering compositions for Portland limestone cement (PLC) conforming to BS EN 197-1: 2000, and up to 45% LS. In particular, key engineering (mechanic...

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Bibliographic Details
Published in:Materials and structures 2007-06, Vol.40 (5), p.459-473
Main Authors: DHIR, R. K, LIMBACHIYA, M. C, MCCARTHY, M. J, CHAIPANICH, A
Format: Article
Language:English
Subjects:
Abrasion resistance
Applied sciences
Building materials
Buildings. Public works
Cement
Cement concrete constituents
Cements
Civil engineering
Concrete construction
Concretes
Concretes. Mortars. Grouts
Durability
Exact sciences and technology
General (composition, classification, performance, standards, patents, etc.)
Limestone
Materials
Portland cements
Product life cycle
Properties and test methods
Properties of anhydrous and hydrated cement, test methods
Stone
Strength
Studies
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Summary:The paper describes a study carried out to examine the performance of concrete produced using combinations of Portland cement (PC) and limestone (LS), covering compositions for Portland limestone cement (PLC) conforming to BS EN 197-1: 2000, and up to 45% LS. In particular, key engineering (mechanical) and durability properties of concrete were studied. The results indicate only minor differences in performance between PC and 15% PLC concretes of the same cement content and water/cement (w/c) ratio (cement = Portland cement + addition). However, there was an adverse effect with increasing LS content beyond 15% of the cement content for many properties. It is shown that for 35 N/mm^sup 2^ cube strength concrete the adjustment to w/c ratio to match the compressive strength of PC concrete was in the region of 0.08 for each 10% LS added (water curing at 20°C) above this level. Studies of permeation and concrete durability performance, including, initial surface absorption, carbonation resistance, chloride diffusion, freeze/thaw scaling and abrasion resistance, indicate that in general the test concretes followed single relationships with strength for most properties. Consideration is given to the practical implications of the main outcomes of the study.[PUBLICATION ABSTRACT]
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-006-9143-7