Research Article
Reduction of the Early Autogenous Shrinkage of High Strength Concrete
Table 4
Mix proportions of the composites.
| | Mixture | C1 | M1 | C2 | M2 | M3 | M4 | M5 | C3 | M6 |
| Fine aggregate 0–4 mm
(kg/m3) | 1130 | 1138 | 1138 | 1137 | 1126 | 1126 | 911 | 1138 | 911 |
| Coarse aggregate 4–16 mm
(kg/m3) | 752 | 758 | 758 | 757 | 750 | 750 | 758 | 758 | 758 |
| Lightweight aggregate 0–2 mm
(kg/m3) | — | — | — | — | — | — | 121 | — | — |
| Lightweight aggregate 2–4 mm
(kg/m3) | — | — | — | — | — | — | — | — | 121 |
| | Type of cement | RII | LH | RII | RII | RII | RII | RII | RI | RI |
| | Steel fibres (% by volume) | — | — | — | — | 0.75 | — | — | — | — |
| Polypropylene fibres
(% by volume) | — | — | — | — | — | 0.75 | — | — | — |
| Shrinkage-reducing admixture
(% by weight of the binder) | — | — | — | 5.00 | — | — | — | — | — |
| | Water-to-binder ratio | 0.40 | 0.40 | 0.36 | 0.36 | 0.36 | 0.36 | 0.36 | 0.36 | 0.36 |
| Naphthalene based superplasticizer
(% by weight of the binder) | — | — | 2.05 | 2.05 | 2.05 | 2.05 | 2.05 | 2.05 | 2.05 |
| Polycarboxylate based superplasticizer
(% by weight of the binder) | 3.70 | 3.70 | — | — | — | — | — | — | — |
|
|
Key: CEM I 52.5R (RI), CEM II/A-S 42.5R (RII), CEM I 42.5LH (LH).
|
