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Publication
A new microbicidal pervious concrete pavement for hospital parking-lots: assessment of the modulus of elasticity
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Advisor(s)
Abstract(s)
In the coronavirus pandemic (COVID-19), it is important to articulate a safeguard against urban contamination originating from hospitals, mainly the tires of vehicles that travel in the hospital parkinglots and contaminating the various parts of the city through traffic on urban roads. With the purpose of disinfecting the pavement of hospital parking-lots to prevent diseases, this research proposes the use of a new pavement composed of pervious concrete with calcium hydroxide (Ca(OH)2) additive, i.e., lime powder. The well-known powder lime becomes a disinfectant with a microbicidal effect which increases the pH of the pavement, being a low cost and an abundant material. Studies have shown that this additive affects the mechanical strength of pervious concrete when added to its mixture. Accordingly, the objective of the study is to find a balance between mechanical strength and the ideal proportion of lime powder additive in the pervious concrete mixture through finite element prototypes subjected to vertical loads of 10,000 N with variation in the modulus of elasticity. The results of the structural simulations indicate the prototype with the best performance ratio is 1:0.8:4 (cement:Ca(OH)2:limestone), compressive strain of 15.70 kg/cm2, density of 1,971.42 kg/m3 and modulus of elasticity of 1,480.22 MPa, with demonstrates a satisfactory mechanical performance for the use of this new pavement in hospital parking-lots.
Description
Keywords
Calcium hydroxide Elasticity Lime powder Microbicidal pavement Pervious concrete
Citation
APA: de Oliveira, E. A., Debrah, J. K., Guerreiro, M. J. C. d. S., & Dinis, M. A. P. (2021). A new microbicidal pervious concrete pavement for hospital parking-lots: assessment of the modulus of elasticity. Procedia Environmental Science, Engineering and Management 8(2), 335-343. http://procedia-esem.eu/pdf/issues/2021/no2/4_36_deOliveira_21.pdf
Publisher
National Society of Environmental Science and Engineering (SNSIM)