Abstracts Book - IMRC 2018

• SE2-P061
GEOTHERMAL WASTE THAT IMPROVE THE MECHANICAL
PROPERTIES OF THE PORTLAND CEMENT MORTARS
Victor Manuel Baez Angel 1 , Wilfrido Martinez Molina 1 , Hugo Luis Chávez García 1 , Elia Mercedes
Alonso Guzman 1 , Cindy Lara Gomez 1 , Luis Alberto Gonzalez Luna 1 , Sandra del Carmen Arguello
Hernandez 1 , Cipriano Bernabe Reyes 1
1 Universidad Michoacana de San Nicolás de Hidalgo, Civil Engineering Faculty, Mexico.
It is proposed to use geothermal silica (a waste derived from electricity
generation process by means geothermal energy) as an alternative to diminish
the comsuption of Portland cement (PC) in the elaboration of the mortars with
the aim of decreasing CO 2 emissions generated by cement production, which
cause environmental damage. Additionally, it is pretended to improve
mechanical properties of these mortars. Mortars with replacements of 5% of PC
by silica from geothermal plants of Cerro Prieto, Baja California and Los Azufres,
Michoacan were made. The aggregate was characterized according to Standard
NMX-C-111-ONNCCE-2004. Mortars were designed with a water/cementing ratio
of 0.65 and a flow of 110±5% taking into account the specifications of the
Standard ASTM-C-109. Mechanical properties of cubic (5cm), prismatic
(4x4x16cm), cylindrical (5x10cm) and briquets samples were evaluated by
means destructive tests such as compressive strength , bending, direct and
indirect tensile strength at ages of 14, 45 y 90 days. It is concluded that these
substitutions could be a replacement that diminish the amount of PC used in
the mortars without detriment of their physical properties, providing a
mechanical performance better than conventional mortars in the case of silica
from Los Azufres. Silica from Cerro Prieto does not present good values at early
ages. However, it is recommended to make tests at late ages.
Acknowledgment:
The authors wish to thank to “Luis Silva Ruelas” Materials Laboratory in the Civil
Engineering Faculty of the Universidad Michoacana de San Nicolas de Hidalgo,
PFCE-SEP, CIC-UMSNH and CONACYT for the sponsorship.
Keywords: waste, properties, mortars
Presenting authors email: eicvmba@gmail.com