Effect of a micro-copolymer addition on the thermal conductivity of fly ash mortars
Alejandro Duran-Herrera, Joana K. Campos-Dimas, P Valdez, Dale P. Bentz
In this study, a copolymer composed of hollow spherical particles with an average particle size of 90 µm was evaluated as a lightweight aggregate in Portland cement-fly ash mortars to improve the thermal conductivity (k) of the composite. Mortars were produced for three different water/binder ratios by mass (w/b), 0.4, 0.5 and 0.6. Optimized proportions were obtained for a minimum target compressive strength of 35 kgf/cm2 according to the requirements of Mexican standards for non-structural masonry units. Thermal conductivity was determined for dry and saturated samples through the transient plane technique with average results of 0.16 W/(m∙K) and 0.31 W/(m∙K) respectively, that in each case represent an increment of 23 % and a reduction of 33 % in comparison to an efficient Portland cement-based commercially available thermal insulator.
, Campos-Dimas, J.
, Valdez, P.
and Bentz, D.
Effect of a micro-copolymer addition on the thermal conductivity of fly ash mortars, Journal of Building Physics, [online], https://doi.org/10.1177/1744259115611650, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918452
(Accessed December 7, 2023)