CD Skripsi
Pembuatan Bata Ringan (Hebel) Dengan Penambahan Kapur (Cao)
ABSTRACT
Lightweight brick is a material obtained by inserting air bubbles into the
lightweight brick mixture, where the air droplets will maintain the bubble
structure in the curing process. The use of lightweight bricks can reduce
construction costs and make it easier to work with. This study aims to make
lightweight bricks with the addition of CaO as an additive to determine the effect
of adding CaO to compressive strength, density, porosity, water absorption, and
thermal resistance. The manufacture of lightweight bricks was carried out in
several stages, which are material preparation stage and the lightweight brick
making stage. At the material preparation stage, the ingredients in the form of
cement, aquadest, foaming agent, and lime were prepared beforehand and for the
sand it was baked at a temperature of 110 C for 2 hours to remove the water
content. Meanwhile, for the light brick making stage, the materials in the form of
foaming agent, cement, aquadest and lime were mixed using a stirrer at a speed of
200-400 rpm at room temperature until it became homogeneous after that the
mixture was molded on a 10x10x10 cm3 mold then left it for 14 days, the
acement:water ratio used in this study was 0.6 while the ratio of sand:cement was
2:1. From the results of the study it could be concluded that the addition of lime
(CaO) can reduce the compressive strength of lightweight bricks and can increase
the percentage value of porosity and water absorption of lightweight bricks where
the best results were obtained in the addition of 0% CaO with a compressive
strength value of 1.3 MPa at density 972 gram/m3 with the results of porosity and
water absorption of 4,413 % and 3,7087 %, respectively. Thermal resistance test
for sample addition of 1% CaO without immersion process at a temperature of
500°C reached a compressive strength of 0.4 Mpa.
Keywords: lightweight brick, CaO, additives
Tidak tersedia versi lain