Pengaruh Resin Epoksi Terhadap Mortar Polimer Ditinjau dari Kuat Tekan, Kuat Tarik Belah, Daya Serap Air dan Scanning Electron Microscope

Abstract

Polymer mortar is a material formed through the process of building a composite concrete and
building polymers. Polymer mortar development efforts have been conducted in developed
countries. Until now the development of polymer mortar is still underway to reduce the use of the
semen, in order to anticipate the global warming. One of them is by using a polymer adhesive
cement replacement material so produced a powerful mortal in a shorter time.
On research was created mortal polymers without cement, fine aggregate and epoxy resin as the
binder of concrete. The composition of the raw materials of polymer mortar made with a
comparison between aggregate and epoxy resins, with her blend of 20%, 25% .30%, 35%, 40% (%
of the total weight of the aggregate). Mortar has been mold then dried in an oven at a temperature
of 600 C for 24 hours. Parameters measured include: water absorption, compressian strength,
tensile strength, and microstructure analysis using a Scanning Electron Microscope (SEM). The
observations suggest that the optimum condition of polymer mortar obtained on composition: 65%
of the aggregate (aggregate) and 35% epoxy resin (% of weight of fine aggregate). In this state of
polymer mortar characteristics obtained as follows: water absorption = 3,57%, compressian
strength = 6.80 MPa, and tensile strength = 1.75 Mpa. The microstructure of the polymer concrete
analyzed using SEM. Result showed that pore size distribution was uneven, and wisps of epoxy
resin ≤ 30 μm.
Keywords: compressian strength, tensile strength, water absorption, Scanning Electron
Microscopy (SEM), polymer mortal.