Slag uses in making an ecofriendly and sustainable concrete: A review

The effect of steam curing regimes on the chloride resistance and pore size of high–strength green concrete

Flexural behavior of glass fiber-reinforced recycled aggregate concrete and its impact on the cost and carbon footprint of concrete pavement

Effect of mix proportion on the structural and functional properties of pervious concrete paving mixtures

Sustainable concrete: Potency of sugarcane bagasse ash as a cementitious material in the construction industry

Asphalt pavement recycling has become a common practice across the globe and has been successfully employed in construction of new pavements. While several studies considered utilization of reclaimed asphalt pavement (RAP) aggregates for flexible and rigid pavements, very few attempted its possibility for roller compacted concrete pavements (RCCP). Additionally, studies on the possibility of enhancing the proportion of RAP for RCCP are very scanty. The present study is an attempt to increase the potential of RCCP mixes containing 50% RAP (dust contaminated & stiffened asphalt coated: 50RAP via including various industrial and agricultural wastes such as Silica Fume, Fly ash, and Sugarcane ash as partial replacement of conventional cement. It was observed that the inclusion of the stated admixtures had an insignificant effect on the density of the fresh RCCP mixes, however, increased the moisture demand considerably. In fact, the results firmly indicated the potential of silica fume for RAP-RCCP blends, as, it not only enhanced the physical and mechanical properties, but found to improve the durability of RCCP mixes considerably. Also, utilization of silica fume was found to be economical & environmentally friendly amongst all wastes: with reduced initial construction cost & CO2 emissions by up to 8.4% & 9.7%. As far as the other industrial wastes are concerned, 15% fly ash could also be utilized for producing sustainable RCCP mixes, whereas, higher dosage of fly ash (30%) and sugarcane ash (10 & 15%) may be employed as base layer material of conventional concrete pavements.

Utilization of industrial and agricultural wastes for productions of sustainable roller compacted concrete pavement mixes containing reclaimed asphalt pavement aggregates

This study discusses the effect of utilizing coarse reclaimed asphalt pavement (RAP) aggregates as a replacement to natural coarse aggregates (NCAs) for the production of pervious concrete ...

Reclaimed Asphalt Pavement as a Substitution to Natural Coarse Aggregate for the Production of Sustainable Pervious Concrete Pavement Mixes

Pervious concrete is regarded as an environmentally sustainable pavement material for its storm water management and urban heat island mitigation abilities. PC has an open graded structure with interconnected voids. The interconnected pore structure helps in reducing the storm water runoff issues, water logging, and hydroplaning in urban roads. The single sized aggregates mainly used in pervious concrete are prone to abrasion loss and lower structural capacity due to increased porosity. To increase the structural capacity and reduce abrasion losses, there is a need to study pervious concrete with modified gradations. The objective of this study was to investigate pervious concrete cylinders prepared using combinations of coarse aggregates (> 4.75 mm) compacted using four different compaction types and efforts. The compaction characteristics of eight different PC mixtures were studied to identify threshold values of compaction energies, which provided porosity within acceptable limits of pervious concrete. Further, the structural capacity and abrasion losses of PC mixtures were studied for two differently graded mixtures, which provided structural and functional performance characteristics of those PC mixtures. The structural capacity of PC mixtures was determined through compressive strength test that was highly dependent on aggregate size, water-to-cement ratio, aggregate gradation, and compaction effort. The functional properties of PC mixtures were determined using abrasion resistance, mainly influenced by compaction energy and aggregate-to-cement ratio. Low compaction energy and high aggregate-to-cement ratio led to lower abrasion resistance.

Effect of Compaction Type and Compaction Efforts on Structural and Functional Properties of Pervious Concrete

Pervious concrete is special class of concrete that has application in reducing stormwater runoff and mitigation of urban heat islands (UHIs). This paper studied the morphological and pore ...

Microstructural and Pore Skeleton Characteristics of Pervious Concrete Containing RAP Aggregates Using X-Ray Microcomputed Tomography and Scanning Electron Microscope

Surya Kant Sahdeo

Papers

Utilization of industrial and agricultural wastes for productions of sustainable roller compacted concrete pavement mixes containing reclaimed asphalt pavement aggregates

Effect of mix proportion on the structural and functional properties of pervious concrete paving mixtures

Reclaimed Asphalt Pavement as a Substitution to Natural Coarse Aggregate for the Production of Sustainable Pervious Concrete Pavement Mixes

Effect of Compaction Type and Compaction Efforts on Structural and Functional Properties of Pervious Concrete

Microstructural and Pore Skeleton Characteristics of Pervious Concrete Containing RAP Aggregates Using X-Ray Microcomputed Tomography and Scanning Electron Microscope