Abstract
This study highlights an investigation of using construction waste materials, i.e., Ahlat stone powder and marble powder, in fabricating interlocked paving stones. In this study, the durability and freeze-thaw strength of concrete paving stones produced from Ahlat stone powder and marble powder were increased by the special curing method. Six different types of paving stones were fabricated for study and were subjected to two different curing regimes. Tests of water absorption, splitting tensile strength, surface abrasion, and freeze-thaw were carried out for the specimens. In 3 days and at 20 ± 5°C of water curing, the splitting tensile strength was 3.7 MPa, the surface abrasion value was 9.8 cm3/50 cm2, and the freeze-thaw value was 0.39 kg/m2 for those interlocked paving stones produced from Ahlat stone powder. After special combined curing, these improved to 3.9 MPa, 17.2 cm3/50 cm2, and 0.63 kg/m2, respectively. Accordingly, for interlocked paving stones produced from marble powder, in 3 days and at 20 ± 5°C water curing, the splitting tensile strength, surface abrasion, and freeze-thaw were 3.9 MPa, 7.9 cm3/50 cm2, and 0.34 kg/m2, respectively. After special combined curing, these values improved to 4.1 MPa, 14.8 cm3/50 cm2, and 0.57 kg/m2, respectively. The findings of this study validate increase in durability and freeze-thaw strength of concrete paving stones with special curing.
Highlights
Concrete paving stones, which are widely used in urban roads, pavement, and recreation areas [1], are fabricated by mixing cement, aggregate, water, and additives in certain ratios [2]. e history of parquet road applications could be traced back to as early as the age of the Roman Empire [3]
Water absorption, splitting tensile strength, surface abrasion, and freeze-thaw tests of different types of interlocked paving stones were carried out, and the results were compared with reference-interlocked paving stone concrete under specification limits [21]. e results of this study indicated that waste materials, such as Ahlat stone powder and marble powder, can be potentially employed in the production of interlocked paving stones. e findings of this study validate increase in durability and freeze-thaw strength of concrete paving stones with special curing
The water absorption values of the new type of interlocked paving stones produced from Ahlat stone and marble powder were lower by approximately 5% and 20.34%, respectively, than that of RWC
Summary
Concrete paving stones, which are widely used in urban roads, pavement, and recreation areas [1], are fabricated by mixing cement, aggregate, water, and additives in certain ratios [2]. e history of parquet road applications could be traced back to as early as the age of the Roman Empire [3]. Interlocked paving stones offer many advantages, compared with concrete and asphalt pavements. Ird, the speed of production and the material capacities are higher. Fourth, they are readily accessible for traffic immediately after being laid on the road. A damaged surface can be repaired in a short time by provision of a new paving stone, preventing the occurrences of unwanted patch defects on the coating surfaces. Sixth, they can be produced in different colors and shapes, the variability and design flexibility. Concrete pavements may weaken over time due to corrosion, erosion, shrinkage, fatigue cracking, or the like [7]. ird, concrete pavements are believed to increase heat waves globally [8]
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