Probabilistic Analysis of Reinforced Concrete Carbonation Depth

Abstract

<p align="justify"> <span style="font-family:'Times New Roman','serif';font-size:10pt;"><span style="font-family:Verdana;font-size:12px;">Concrete carbonation relates to the diffusion of CO</span>_{<span style="font-family:Verdana;font-size:12px;">2</span>}<span style="font-family:Verdana;font-size:12px;"> inthe atmosphere through the concrete pores and to the dissolution of the hydrates. A great deal of uncertainty still remains in this subject as a result of the random nature of the infiltration of these aggressive agents as well as the material and structural properties of reinforced concrete. Consequently, in or</span></span><span style="font-family:Verdana;font-size:12px;">der to determine the degradation of these structures with time, it is necessary to approach the subject from a probabilis</span><span style="font-family:Verdana;font-size:12px;">tic point of view that it considers the uncertainties involved with the geometrical dimensions of these structures, with the material characteristics and with the environment and the subsequent deterioration that it provokes.</span><span style="font-family:'Times New Roman','serif';font-size:10pt;"> </span><span style="font-family:Verdana;font-size:12px;">The aim of this paper is the </span><span style="font-family:'Times New Roman','serif';font-size:10pt;"><span style="font-family:Verdana;font-size:12px;">evaluation of carbonation depth (</span><i><span style="font-family:Verdana;font-size:12px;">Xc</span></i><span style="font-family:Verdana;font-size:12px;">)</span><span style="font-family:Verdana;font-size:12px;"> from a probabilistic analysis, </span></span><span style="font-family:Verdana;font-size:12px;">focusing specifically on the study of the randomness of the most influential parameters on the reinforced concrete carbonation.</span> </p

Probabilistic Carbonation Simulations in Concrete Based on Marble Powder

“…Carbonate quantity in the calcium silicate hydrates (CSH) depends on the degree of hydration of cement and the effective coefficient of diffusion of CO2 in carbonate zone. [10]…”

Influence of Additives on Reinforced Concrete Durability

“…Carbonation reaction can reduce pH of the concrete pore fluid up to pH < 9, wherein passivating layer of the steel reinforcement becomes unstable. [2] Chloride induced corrosion in contrast to carbonation causes localised depassivation of the steel reinforcement. [3] Carbonation has dual effect on the chloride diffusion: chemical and physical.…”