PENGARUH PEMANFAATAN ABU SEKAM PADI PADA BATA BETON RINGAN FOAM TERHADAP KUAT TEKAN, BERAT JENIS, DAN DAYA SERAP AIR SEBAGAI SUPLEMEN BAHAN AJAR MATA KULIAH TEKNOLOGI BETON (PADA MAHASISWA SEMESTER III PTB FKIP UNS)
Authors: Wahyuni Ari Sri , Habsya Chundakus , Sunarsih Ernawati Sri 
Published: April 2018

xt-stroke-width: 0px; "&gt; <!--EndFragm--><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>The purposes of this research were to, (1) determine the influence of rice husk ash as</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>smooth aggregate partial substitute and foam variation towards compressive strength,</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>density, and absorption of lightweight foam concrete brick, (2) determine the percentage of</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>rice husk ash as smooth aggregate partial substitute and foam variation to achieve the</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>compressive strength which fulfilled SNI No. 03 – 0349 – 1989, (3) determine the</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>percentage of rice husk ash as smooth aggregate partial substitute and foam variation to</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>achieve the density lightweight concrete which fulfilled SNI No. 03 – 0349 – 1989, (4)</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>determine the percentage of rice husk ash as smooth aggregate partial substitute and foam</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>variation to achieve the absorption which fulfilled SNI No. 03 – 0349 – 1989, (5) produce</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>course material supplement of concrete technology on the influence of using rice husk ash in</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>lightweight foam concrete brick toward compressive strength, density, and absorption.</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 absorption of lightweight foam concrete bricks, (2) independent variables: the substitute</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>of smooth aggregate to rice husk ash with variation 0%, 25%, 35%, and 45% and foam</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>variation 0,2 and 0,3 of concrete volume.</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 rice husk ash and</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>foam was strongly influence towards the compressive strength, density, and absorption of</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>lightweight foam concrete bricks, (2) There was no percentage of rice husk ash and foam to</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>achieve the compressive strength of lightweight foam concrete brick which fulfilled SNI No.</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>03 – 0349 – 1989, (3) All percentages of rice husk ash and foam variation produced the</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>density value of lightweight foam concrete brick which fulfilled SNI No. 03 – 0349 – 1989, (4)</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>All percentages of rice husk ash and foam variation produced the absorption value of</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>lightweight foam concrete brick which fulfilled SNI No. 03 – 0349 – 1989, (5) the output</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>course materials was a course materials supplement about the influence of the use rice husk</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>ash as partly smooth agregate substitute of lightweight foam concrete brick to compressive</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>strength, density, and absorption.</em><br /><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><strong><em>Keywords: </em></strong><span style="font-size: 12pt; color: #000000; font-style: normal; font-variant: normal;"><em>rice husk ash, foam, lightweight foam concrete bricks.</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></span></span>