Validation of alternative methodologies by using capillarity in the determination of porosity parameters of cement-lime mortars

被引：17
作者：
Marvila, Markssuel T. [1 ]
de Azevedo, Afonso R. G. [2 ]
Ferreira, Ruan L. S. [3 ]
Vieira, Carlos Mauricio F. [1 ]
de Brito, Jorge [4 ]
Adesina, Adeyemi [5 ]
机构：
[1] State Univ Northern Rio Janeiro, Adv Mat Lab, LAMAV, UENF, Av Alberto Lamego,2000,Campos Goytacazes, BR-28013602 Rio De Janeiro, Brazil
[2] State Univ Northern Rio Janeiro, Civil Engn Lab, LECIV, UENF, Av Alberto Lamego,2000,Campos Goytacazes, BR-28013602 Rio De Janeiro, Brazil
[3] Fed Inst Educ, Sci & Technol Pernambuco, Civil Construct Dept, BR-55200000 Pesqueira, Brazil
[4] Univ Lisbon, Inst Super Tecn, CERIS, Av Rovisco Pais, P-104901 Lisbon, Portugal
[5] Dept Civil & Environm Engn, Windsor, ON, Canada
来源：
MATERIALS AND STRUCTURES | 2022年 / 55卷 / 01期
关键词：
Capillarity; Darcy's law; Porosity; Cement; Water absorption; Percolation; PORE STRUCTURE; DARCYS-LAW; FLOW; SUSTAINABILITY; CONSTRUCTION; POROSIMETRY; SLUDGE; WASTE; SLAG;
D O I：
10.1617/s11527-021-01877-6
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The capillary mechanisms in mortars were investigated in this study by using different cement-lime mortar compositions commonly used in coatings and repair mortars. Two types of natural sand (maximum diameter of 1.2 and 2.4 mm) were used in water absorption by capillarity, water absorption by immersion and boiling, and mercury intrusion porosimetry tests. The results obtained were validated by Darcy's Law for water flow in a porous medium. Findings from this study showed that mixed-binder mortars of 1:1:6 and 1:2:9 (cement: lime: sand), and cement mortars 1:3 (cement: sand) exhibited a direct relationship with the results obtained by Darcy's law. Hence, such a method can be used in determining the percentile of capillary pores in mortars. Results from this study also showed that lime mortars with a composition of 1:3 (lime: sand) do not comply with Darcy's law due to the intrinsic properties of the binder, such as hygroscopicity.
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页数：15
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