New test methods to determine water absorption by capillarity. Experimental study in masonry mortars

2022 ◽  
Vol 319 ◽  
pp. 125988
Engerst Yedra ◽  
Daniel Ferrández ◽  
Carlos Morón ◽  
Pablo Saiz
2019 ◽  
Vol 56 (6) ◽  
pp. 532-540 ◽  
Seong-Rak Cho ◽  
Eun-Jin Oh ◽  
Cheol-Hee Kim ◽  
Jae-Man Lee ◽  
Sung-Pyo Kim

2019 ◽  
Vol 4 (1) ◽  
pp. 1-10
Arfiani Nur ◽  

Abstrack The background of this research is that Borax is a chemical compound called sodium tetraborate (NaB407 10 H20). If dissolved in water it will become hydroxide and boric acid (H3B03). Borax is often misused as an additional ingredient not permitted in foods that are adapted to Permenkes RI No. 1168 / Menkes / Per / X / 1999 concerning food ingredients. The purpose of this study was to determine the content of borax in meatballs in the district of Bulukumba. This type of research is a laboratory experimental study using qualitative test methods. The sample of this study was that curcumin paper did not produce changes in color on curcumin paper, the color of curcumin paper remained yellow indicating that the sample did not contain hazardous borax.

Elena Pop ◽  

The paper presents a theoretical and experimental study of experimental methods for the determination of deformability. Thus we determined the degree of deformation of copper wire by testing to traction, the fragility by means of fragility testing and the elongation of the spire sample. The experimental attempts have highlighted the fact that the properties of materials are determined with the help of the experimental methods. These The indicated test methods show the deformability of the material in the process ofplastic deformation and they are representative of physical simulation attempts.

2013 ◽  
Vol 750-752 ◽  
pp. 64-69
Hai Xia Yu ◽  
Chong Rong Fang ◽  
Man Ping Xu ◽  
Rong Qiang Tang

Laminate floor coverings, with fiberboard in the middle layer, are hygroscopic which caused potential dimension instability. The paper tested thickness swelling (TS) and water absorption (WA) of 10 commercial laminate floors (LF) according to G/T 18102-2007 (GB/T) and LY/T 1611-2011(LY/T) and analyzed correlation between them. The results show that TS obtained by the GB/T method differed significantly from LY/T methods at the initial 14 days. 7d-TS and 7d-WA values of test specimen measuring 50 by 50mm both correlated well with internal bond (IB). For both kinds of test methods, the moisture content almost reached saturation at 28 days.

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