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• CPC composites designed for structural repair of high-value infrastructures are presented. • Fracture properties and other mechanical properties of CPC composites are determined. • Synergistic relationships between rubber particles and fibres in CPC matrix are presented. • Failure modes of CPC composites are presented. • Bonding relationships between the inert inclusions and the CPC matrix are discussed. Calcium phosphate cement (CPC) is a wollastonite-based inorganic cement that hardens at room temperature to a brittle cementitious material with low fracture behaviour. Recycled rubber aggregates from end-of-life tyres were incorporated up to 17.5 wt% into the CPC matrix to produce high-strength composites with improved strain capacities for structural repair purposes. Furthermore, the effects of 0.75% and 1.5% volume fibre content (V f) of macro polypropylene, amorphous metallic and recycled carbon fibres on the flexural behaviour of CPC were studied. The synergy between the rubber aggregates and the selected corrosion-resistant fibres in improving the fracture properties of the plain CPC was investigated. The changes in other mechanical properties of CPC such as modulus of rupture, compressive and splitting tensile strength due to the inert inclusions (i.e. rubber aggregates and/or fibres) were determined. It was found that increasing the quantity of inert inclusions in the cement matrix improved the fracture energy of the plain CPC. Incorporating 1.5% V f of macro polypropylene, amorphous metallic, and recycled carbon fibres into the CPC matrix produced cementitious composites with fracture energies that were 11.8 times, 63.4 times, and 75.8 times that of plain cement, respectively. For the rubberised fibre-reinforced CPC composites, a positive synergistic relationship was observed between rubber aggregates and macro polypropylene fibres while a negative synergistic relationship was found between rubber aggregates and the other fibres (amorphous metallic and recycled carbon fibres). The rubber aggregates decreased the flexural, compressive and splitting tensile strengths of the plain CPC, while the fibre inclusions improved these properties. [ABSTRACT FROM AUTHOR]

• Rubberized cement-based composites are suitable materials for pavements. • The composites have higher strain capacity and low propensity for cracking. • Rubberized roller/self-compacted concretes were used for pavements. • Field applications confirmed the applicability of the composites in pavements. • Future considerations for rubberized cement-based pavements were discussed. Properties of rubberized cement-based composites have been investigated and the up-to-date research findings have demonstrated the practical feasibility of using the materials for large surface applications. Despite the detrimental effect in some mechanical properties, beneficial characteristics known as improved strain capacity, low propensity for restrained shrinkage cracking, high freeze-thaw resistance, better sound insulation, etc. make such composites relatively interesting for pavements such as road dedicated for low traffic volume, base or sub-base courses, or overlays. This review paper focuses on advantageous properties of rubberized cement-based materials and potential for pavement applications including rigid pavements, semi-flexible pavements, block pavers, cement-treated bases/sub-bases, and thin bonded overlays. General conclusions and further possible considerations to popularize the use of rubber aggregates in pavements as one of the most relevant solutions to recycle end-of-life rubber tires are also presented. [ABSTRACT FROM AUTHOR]

Abstract: Investigations on concrete creep are often limited to the compression behavior due to the difficulty of performing tensile tests on cement-based materials. This paper describes the experimental setup developed to achieve direct tensile and bending concrete creep. The precautions taken to obtain relevant data are described. For comparison, tensile, flexural and compressive basic creep test were conducted in parallel. Although the approach is still controversial, the basic creep strain was determined by subtracting the shrinkage strain and instantaneous strain from the total strain. Results available for specimens subjected to 50% of the strength in tension or in compression are presented. The final discussion compares the basic creep under the different types of loading. [Copyright &y& Elsevier]