Influence of Chemical Admixtures on Fresh and Hardened Properties of Prolonged Mixed Concrete

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Chemical admixture</td><td class="align_center">Composition</td><td class="align_center">Appearance</td><td class="align_center">Specific gravity at 25°C</td><td class="align_center">Recommended dosage range (% weight of cement)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">WR</td><td class="align_center">Lignosulfonate based</td><td class="align_center">Dark brown liquid</td><td class="align_center">1.17</td><td class="align_center">0.23–0.47</td></tr><tr><td class="align_left">SP1</td><td class="align_center">Sulfonated naphthalene polymer based</td><td class="align_center">Dark brown liquid</td><td class="align_center">1.24</td><td class="align_center">0.87–2.23</td></tr><tr><td class="align_left">SP2</td><td class="align_center">Polycarboxylic ether based</td><td class="align_center">Light brown liquid</td><td class="align_center">1.05</td><td class="align_center">0.42–1.26</td></tr><tr><td class="align_left">SP3</td><td class="align_center">Second-generation polycarboxylic ether polymer based</td><td class="align_center">Light brown liquid</td><td class="align_center">1.10</td><td class="align_center">0.55–1.32</td></tr><tr><td class="align_left">SP4</td><td class="align_center">Organic polymer based</td><td class="align_center">Dark brown liquid</td><td class="align_center">1.19</td><td class="align_center">0.71–1.31</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Properties and recommended ranges of dosage of chemical admixtures.

Advances in Materials Science and Engineering

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Table 1

Table 1: Influence of Chemical Admixtures on Fresh and Hardened Properties of Prolonged Mixed Concrete 