Journal of Building Materials and Structures
Volume 1, Numéro 1, Pages 23-29

Excess Paste Method To Formulate A Self-compacting Concrete

Authors : Mebrouki Abdelkader . Bendani Karim . Bouhamou Nasreddine . Belas Nadia .


On the basis of the principle that a concrete is composed of a liquid phase (paste) and a solid phase (aggregates with fixed gravel/sand ratio), the concrete self-compacting properties come necessarily from those of the paste. The present work is the continuity of a first phase of the testing already conducted, which resulted in obtaining an optimal self-compacting cement paste composition. This paste will be used to prepare a self-compacting concrete (SCC), while passing from the scale of the cement paste to that of the concrete, by injecting wet aggregate to the self-compacting paste. The excess paste theory was used to determine the thickness of the paste coating each aggregate with a given diameter of constituting granular skeleton, then generalized for the determination of the quantity of total paste allowing the flow of the concrete by decreasing frictions between the grains of its granular skeleton. This approach was also experimentally validated. The influence of the granular distribution was minimized by the use of the approach based on the determination of the average diameter of the aggregates. This required the determination of a homothetic factor “k” similar for all concretes with different aggregate grading. Formulation of a self-compacting concrete passes initially by the determination of a sufficient quantity of paste allowing its flow without frictions between its aggregates and to balance the mixture by the quantity of water retained by the aggregates. The self-compacting concrete characteristics would come from those of the cement paste which composes it.


Self-compacting concrete; Excess paste method; Homothetic; Compactness; Formulation

Fresh And Hardened Properties Of Self-compacting Concrete With Different Mineral Additions And Fibers

Haddadou Naima .  Chaid Rabah .  Ghernouti Youcef .  Adjou Naima .  Bouzoualegh Malik . 
pages 41-50.

The Effect Of Hybrid Steel Fiber On The Properties Of Fresh And Hardened Self-compacting Concrete

Haddadou Naima .  Chaid Rabah .  Ghernouti Youcef .  Adjou Naima . 
pages 65-76.

Strength And Durability Of Low-impact Environmental Self-compacting Concrete Incorporating Waste Marble Powder

Boukhelkhal Aboubakeur .  Azzouz Lakhdar .  Benabed Benchaa .  Belaïdi Akram Salah Eddine . 
pages 31-41.

The Effect Of Paste Volume And Concrete Properties On Size Independent Fracture Energy

Danhash Ghoson .  Kousa Mayada .  Wardeh George . 
pages 58-72.