PENGARUH PENAMBAHAN FLY ASH TERHADAP KUAT TEKAN, BERAT JENIS, DAN DAYA HAMBAT PANAS BATA BETON RINGAN FOAM SEBAGAI SUPLEMEN BAHAN AJAR MATA KULIAH TEKNOLOGI BETON PADA MAHASISWA SEMESTER III PTB JPTK UNS
Authors: Ngarifin Ngarifin , Habsya Chundakus , Rahmawati Anis 
Published: April 2018

<span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>The purposes of this research were, (1) determine the effect of fly ash added with</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>variations of 0%, 10%, 20%, 30% and foam added with variation 30% and 40% on</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>compressive strength, density, and thermal resitance of lightweight foam concrete bricks, (2)</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>determine the percentage of fly ash and foam that produces thermal resistance that satisfied</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>required compressive strength on lightweight foam concrete bricks SNI 03-2847-2002. (3)</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>determine the percentage of fly ash and foam added that produces minimal density</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>lightweight foam concrete bricks, and (4) produce supplement teaching materials obtained in</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>the course of concrete technology on the effect of the fly ash addition to the compressive</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>strength, density, and thermal resistance of lightweight foam concrete bricks.</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>This research used experimental method and data analysis techniques used regression</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>analysis. Variables in the study were (1) dependent variables: compressive strength, density,</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>and thermal resistance of lightweight foam concrete bricks, (2) independent variables: the fly</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>ash addition with variations 0%, 10%, 20%, and 30% to the needs of fine aggregate and</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>variations addition of foam 30% and 40% of the concrete volume with the water and foam</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>agent ratio = 1:40.</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>Based on the results of the study concluded that, (1) variation of the addition of fly</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>ash and foam was strongly influencing the compressive strength, density, and thermal</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>resistance of lightweight foam concrete bricks, (2) thermal resistance with concluded</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>compressive strength on lightweight foam concrete bricks SNI 03-2847-2002 produced from</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>30% of the concrete volume foam added with the percentage fly ash added of 10%, 20%, and</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>30% of fine aggregate respectively were 27.6 kg /cm</em><span style="font-size: 8pt; color: #000000; font-style: normal; font-variant: normal;"><em>2</em><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>; 29.3 kg/cm</em><span style="font-size: 8pt; color: #000000; font-style: normal; font-variant: normal;"><em>2</em><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>; and 35.0 kg/cm</em><span style="font-size: 8pt; color: #000000; font-style: normal; font-variant: normal;"><em>2</em><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>, (3) the</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>minimal density of lightweight foam concrete bricks produced on the percentage of fly ash</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>addition of 0% (without the fly ash addition) with 40% foam addition of the concrete volume</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>that was 855.565 kg/m</em><span style="font-size: 8pt; color: #000000; font-style: normal; font-variant: normal;"><em>3</em><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>, (4) produced tecahing materials in the form of supplements teaching</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>materials about the effect of the fly ash addition to the compressive strength, density, and</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>thermal resistance of lightweight foam concrete bricks.</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><strong>Keywords: </strong><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>fly ash, foam, lightweight foam concrete brick, compressive strength, density,</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>thermal resistance.</em></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /></span></span></span></span></span></span></span></span></span></span>