Assessment of the durability of grout submitted to accelerated carbonation test

Martins, Roseli Oliveira Guedes; Alvarenga, Rita de Cássia Silva Sant'Ana; Pedroti, Leonardo Gonçalves; Oliveira, André Fernando de; Mendes, Beatryz Cardoso; Azevedo, Afonso Rangel Garcez de

doi:10.1016/j.conbuildmat.2017.10.111

Cited by 51 publications

(18 citation statements)

References 32 publications

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“…Carbonization test: Penetration of CO 2 in cementitious materials led to a reduction in pH and accelerated the corrosion of rebars, resulting in a shorter lifetime of constructions, which is a major concern in terms of practical applications [ 34 ]. In this study, the average carbonation depth was derived from Equation (2).…”

Section: Resultsmentioning

confidence: 99%

Mechanical Properties and Carbonation Durability of Engineered Cementitious Composites Reinforced by Polypropylene and Hydrophilic Polyvinyl Alcohol Fibers

Zhang

Yin

et al. 2018

Materials

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Herein, the mechanical properties and carbonation durability of engineered cementitious composites (ECC) were studied. For the cost-efficient utilization of ECC materials, different types of specimens were cast with polypropylene (PP) and hydrophilic polyvinyl alcohol (HPVA) fibers. The compressive strength, Poisson’s ratio, strength-deflection curves, cracking/post-cracking strength, impact index, and tensile strain-stress curves of two types of ECC materials, with differing fiber contents of 0 vol %, 1 vol %, 1.5 vol %, and 2 vol %, were investigated with the use of compressive tests, four-point bending tests, drop-weight tests, and uniaxial tensile tests. In addition, the matrix microstructure and failure morphology of the fiber in the ECC materials were studied by scanning electron microscopy (SEM) analysis. Furthermore, carbonation tests and characterization of steel corrosion after carbonization were employed to study durability resistance. The results indicated that for both PP fiber- and HPVA fiber-reinforced ECCs, the compressive strength first increases and then decreases as fiber content increases from 0 vol % to 2 vol %, reaching a maximum at 1 vol % fiber content. The bending strength, deformation capacity, and impact resistance show significant improvement with increasing fiber content. The ECC material reinforced with 2 vol % PP fiber shows superior carbonized durability with a maximum carbonation depth of only 0.8 mm.

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Section: Resultsmentioning

confidence: 99%

Mechanical Properties and Carbonation Durability of Engineered Cementitious Composites Reinforced by Polypropylene and Hydrophilic Polyvinyl Alcohol Fibers

Zhang

Yin

et al. 2018

Materials

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“…is leads to a relative error of 4.92% and 4.57%, respectively, which can be considered as very low. However, by using model 2, the resistance values increase to 5.8 MPa and 4.7 MPa for mortars REF116 and REF129, respectively, leading to relatively larger errors of 34.49% and 29.87% [27]. us, model 1 presents a better mathematical adjustment to the experimental data obtained.…”

Section: Analysis Of Excess Materials In the Samplementioning

confidence: 91%

Study of the Compressive Strength of Mortars as a Function of Material Composition, Workability, and Specimen Geometry

Marvila¹,

Azevedo²,

Alexandre³

et al. 2020

Modelling and Simulation in Engineering

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In the present work, the statistical dispersion of the mortar compressive strength as a function of the geometric parameters of the specimens as well as the effect of the mortar workability difference on the compressive strength was investigated. For this purpose, specimens were prepared for six types of mortars: two conventional mortars in the proportions of 1 : 1 : 6 and 1 : 2 : 9 of cement, hydrated lime, and sand, respectively, two with clay replacing lime, and two with marble waste in place of lime. The results confirm the difference between the results found for the two geometries due to the differences in the heights of the molding layers and show that the workability of the mortar modifies the resistance properties, especially in the cylindrical mold where the molding of the specimens is more complex. By comparing the differences between the destructive test results and those defined by the Finite Element Modeling (FEM) for conventional mortars, it was clear that the effect of excess material in the sample during the compression tests did not change the strength properties studied. This facilitates the performance of the assay as specimens may be used excessively on the side without the need for sample rectification.

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“…The carbonation chamber was developed in the Laboratory of Construction Materials of UFV in the research conducted by Martins et al 19 . The equipment has humidity and temperature sensors, in addition to a dehumidifier controlled by an Arduino system.…”

Section: Methodsmentioning

confidence: 99%

Durability of Concrete After Fire Through Accelerated Carbonation Tests

et al. 2019

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Degradation of mechanical properties and durability of reinforced concrete structures occur when they are subjected to fire situations, depending on the characteristics of the material, fire duration and the ways of fire extinguishing. Mechanical properties such as compressive strength, tensile strength and elasticity modulus are some examples of typically altered characteristics in concrete during high temperature exposure. Nevertheless, little is known about the advance of the carbonation front on fire-damaged concrete, which is a characteristic directly related to the durability of the structural system. For this purpose, the carbonation front was evaluated in specimens with characteristic strengths of 20 MPa and 35 MPa, subjected to high temperatures (200 °C, 500 ºC and 700 ºC) and different types of cooling (fast and slow). It was observed that the concrete durability is harmed by exposure to high temperatures and fast cooling. However, advance of the carbonation front was not verified in slow cooling situations.

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Assessment of the durability of grout submitted to accelerated carbonation test

Cited by 51 publications

References 32 publications

Mechanical Properties and Carbonation Durability of Engineered Cementitious Composites Reinforced by Polypropylene and Hydrophilic Polyvinyl Alcohol Fibers

Mechanical Properties and Carbonation Durability of Engineered Cementitious Composites Reinforced by Polypropylene and Hydrophilic Polyvinyl Alcohol Fibers

Study of the Compressive Strength of Mortars as a Function of Material Composition, Workability, and Specimen Geometry

Durability of Concrete After Fire Through Accelerated Carbonation Tests

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