Circular concrete filled steel tubes made of eco-concrete with limestone fines added as cementitious paste replacement

Cai, Yancheng; Kwan, A.K.H.; Li, L.G.

doi:10.1016/j.istruc.2020.08.044

Cited by 12 publications

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The coarse aggregate of ecological pervious concrete is generally selected from a single particle size of 10 mm to 20 mm of high-quality basalt or limestone [25]. Therefore, the Upper Devonian Rongxian Group ((D 3r ) limestone was selected to ensure its strength.…”

Section: Introductionmentioning

confidence: 99%

Performance of Ecological Pervious Concrete Prepared with Sandstone/Limestone-Mixed Aggregates

et al. 2023

View full text Add to dashboard Cite

To understand the performance of ecological pervious concrete prepared with mixed sandstone/limestone aggregates, limestone and sandstone were used as two aggregates. The sandstone-to-limestone volume ratio was calculated in 0 : 1, 0.25 : 0.75, 0.5 : 0.5, 0.75 : 0.25, and 1 : 0 in coarse aggregate to prepare ecological pervious concrete specimens. The compressive test, water permeability test, cooling test, evaporation test, alkaline test, and scanning electron microscope (SEM) tests were carried out with qualified compressive strength as the indicator to determine the optimum sandstone-to-limestone volume ratio for the ecological pervious concrete. The results show that the water permeability, cooling property, and evaporation property of the ecological pervious concrete increase with the sandstone content. When the sandstone-to-limestone volume ratio is less than 0.32 : 0.68 (the substitution rate of sandstone for limestone in ecological pervious concrete is 32%), the strength of ecological pervious concrete meets the requirements of 5 MPa and achieves the best permeability coefficient of 9 mm/s. This realizes the full use of net water storage and cooling capacity of the ecological pervious concrete and makes the ecological pervious concrete meet the construction requirement of slope protection in sponge cities in the south.

show abstract

Section: Introductionmentioning

confidence: 99%