Mechanical Behavior of Natural Hydraulic Lime Mortars

Garijo, Lucía; Zhang, XiaoXin; Ruiz, Gonzalo; Ortega, José-Fernán Martínez; Yu, RenaC.

doi:10.5772/intechopen.80852

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…The average value of the fracture energy, calculated as the area under the stress versus crack opening displacement curve from peak stress up to displacement corresponding to 1% of the peak stress, is

= 7.50 N/m with a CV of 24%. This value is coherent with the experimental results obtained on hydraulic mortars in [ 37 , 38 ].…”

Section: Methodssupporting

confidence: 92%

A Bi-Modulus Material Model for Bending Test on NHL3.5 Lime Mortar

2023

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The research provides an innovative contribution to the interpretation of three-point and four-point bending tests on mortars by employing a bi-modulus material model, which assumes an asymmetric constitutive law, i.e., different elastic moduli in tension and in compression. To this aim, Euler–Bernoulli and Timoshenko bi-modulus beam models are defined, and the related displacement fields are reported for three-point loading, and provided for the first time for the four-point bending layout. A wide experimental campaign, including uni-axial tensile and compressive tests, three-point and four-point bending tests, and on notched specimens three-point tests for mode-I fracture energy, has been carried out on lime mortar specimens exploiting traditional contact (CE-DT) and contactless (DIC) measurement systems. Experimental results provided the values of tensile and compressive mechanical characteristics, which are employed to validate estimations of the analytical model. The tension-to-compression moduli ratio experimentally observed is on average 0.52. Experimental outcomes of the DIC analysis proved the bi-modulus behaviour during the four-point bending tests showing visible shifting of the neutral axis. The bi-modulus analytical model provides closer results to the experimental ones for the slender specimens subjected to four-point bending.

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= 7.50 N/m with a CV of 24%. This value is coherent with the experimental results obtained on hydraulic mortars in [ 37 , 38 ].…”

Section: Methodssupporting

confidence: 92%

A Bi-Modulus Material Model for Bending Test on NHL3.5 Lime Mortar

2023

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“…More detail information about the description of the previous mechanical tests can be found in (Garijo et al, 2018;Garijo, 2019;Garijo et al, 2017Garijo et al, , 2020Garijo et al, , 2019.…”

Section: Tests In a Hardened Statementioning

confidence: 99%

The Influence of Dosage and Production Process on the Physical and Mechanical Properties of Air Lime Mortars

Garijo

Zhang

Ruiz

et al. 2020

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. This paper studies the influence of five different factors affecting the dosage and production process of seven types of air lime mortars on their physical and mechanical properties. Such factors comprise the water/lime ratio, the aggregate type and size, the material of the mold and the curing conditions. Moreover, some physical and mechanical properties, not usually measured on air lime mortars, are obtained, such as open porosity, splitting tensile strength, fracture energy and elastic modulus measured through prisms. The results show that under the three different water/lime ratios tested, the material experiences a structural weakening. Ambient curing conditions were more favorable for air lime mortars than high humid ones. Moreover, it is observed that fabrication with wooden molds provided higher mechanical properties as they absorbed the free water, although this effect was probably local. Air lime mortar with an aggregate size of 2 mm had lower consistency in a fresh state as finer sands were more water demanding and the mechanical properties of this mortar were slightly lower than those of mortar with aggregate sizes of 0/4 mm. Furthermore, using limestone aggregates improved the continuity between the lime and the matrix. This fact resulted in higher mechanical properties of the mortars with limestone aggregates in comparison to those with river sand when maintaining the same water/lime ratios. This study can suppose a further step in the improvement of the dosage methodology of air lime mortars.

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