EVALUASI KUAT LEKAT DAN KUAT GESER PASANGAN BATA MERAH TERHADAP MUTU MATERIAL TEMBOKAN PADA RUMAH SEDERHANA DI DAERAH RAWAN GEMPA JAWA TIMUR (Studi Penelitian)

This research is expected to be used as one of the alternative alloys in the manufacture of paving blocks and several variations of pressing the mixture composition in accordance with the level of its ability to withstand shock loads (impact resistance) is needed or can contribute ideas for practitioners, researchers and educational institutions. This research was conducted laboratory Concrete Technology Department of Civil Engineering Faculty University of Malang and Industry paving blocks the King of Work-Tanggulangin berelokasi in Sidoarjo. Implementation of this research include 3 stages namely stacking paving material inspection FCA, FCA paving manufacture, testing resistance of shock (impact resistance) in accordance with standard ASTM D-1557, treatment with the test benba paving the way flush the FCA started since the day after the\ud printing of 28-day-old paving samapai . This study uses FCA paving type A (rectangular shape) with the size of paving blocks used is the width of 10.5 cm, length 21 cm, and height 6 cm. This study used a mixture of 6 variations: cement: sand: FCA with a ratio of 1:4:0, 1:4:3, 1:4:5, 1:8:0, 1:8:3, 1:8:5. printed with a variety of pressing 40 kg/cm2, 60 kg/cm2, 80 kg/cm2, 100 kg/cm2. This experiment is testing the shock resistance (impact resistance) interlocking paving blocks with an interlocking shapes: flat brick (stretcher bond), woven mats (basket weave). fish bone. (Hearing bond) From the results of the study appear in mind that the value of resistance of shock (impact resistance) maximum on the test result form interlocking paving FCA by 38 strokes at the first crack and the destruction of interlocking in a blow to 145 that occurred in the 1:4:0 mixture, pressing 100 kg/cm2 Fish Bones with interlocking shapes

Uji Kuat Tekan Paving Block Menggunakan Campuran Tanah Dan Kapur Dengan Alat Pemadat Modifikasi

Paving blocks are widely used as a public building construction, especially for paving roads,yards, sidewalks, parking lots, etc. The use of materials such as paving block the main constituentof cement and sand is relatively expensive. So in this study will provide another alternative tousing a mixture of soil and lime.Soil samples tested were from Kota Baru, South Lampung, with variations in the levels of themixture used is 0%, 5%, 10%, 15%, and 20% and the curing time for 14 days, as well as with thetreatment without burning and burning which will then be tested compressive strength and waterabsorption.The results showed that the compressive strength occurs at the most optimal mix of 15% and adecline in a mixture of 20%. The addition of lime percentage ≤15% resulted in the addition ofcompressive strength of paving blocks, while the addition of lime percentage of 20% resulted in adecrease in the compressive strength of the paving blocks. The compressive strength withoutburning still not meet the specifications of SNI 03-0691-1996, while paving blocks with burningthe lime content of 15% is already included in the classification of the quality of D. Waterabsorption test values not meet the specifications of paving blocks SNI 03-0691-1996 whichranges from 3%-10%

Pemanfaatan Limbah Serbuk Batu Marmer Dari Gunung Batu Naitapan Kabupaten Timor Tengah Selatan Pada Campuran Paving Block

Mining of marble stone at Naitapan Stone Mountain waste floured marble sawn stone. Marble powder is a lot of buried material and its utilization is still relatively small. Seeing its potential, waste marble powder can be pursued for use as an alternative building material that is as fine aggregate substitute for sand in the manufacture of paving blocks. Replacement of sand with powdered marble will certainly affect the physical properties of the paving blocks, so that the study sought to find out great compressive strength and water absorption of aggregate paving block that uses finely powdered marble. Study the specimen in the form of paving block with dimensions of 20 x 10 x 6 cm by 60 test specimens treated with 2 marble powder replacement that is 50% and 100% of the weight of the sand and using a pressing of 50 kg/cm2 on comparative variation mixture of 1:2, 1:4, 1:6, 1:8 and 1:10. To determine the quality of paving block, then do the testing compressive strength and water absorption at 28 days old. Based on research results obtained that by pressing the same, paving block with a 100% replacement of marble powder produces compressive strength value is higher than the replacement of paving blocks with 50% marble powder. Water absorption of produced paving blocks with 100% replacement of marble powder is smaller than the replacement of 50% marble powder. Higher value of compressive strength of paving blocks at 28 days with 100% replacement of marble powder amounted to 39,75 MPa, 34 MPa, 25 MPa, 20 MPa and 14 MPa respectively each participated in the mixture ratio 1:2, 1:4 , 1:6, 1:8 and 1:10. With the higher water absorption value respectively also for each mixture ratio is equal to 7%, 7,45%, 7,48%, 7,51% and 7,59%. While the value of compressive strength of paving blocks with replacement of 50% marble powder amounted to 38,75 MPa, 25,50 MPa, 15 MPa, 11 MPa and 10 MPa respectively each participated in the mixture ratio 1:2, 1:4, 1:6, 1:8 and 1:10. And large water absorption value respectively also for each mixture ratio amounted to 8,15%, 8,88%, 9,09%, 9,29% and 9,31%

Pemanfaatan Limbah Fly Ash Batubara untuk Pembuatan Paving Block Geopolimer dengan Variasi Konsentrasi NaOH dan Rasio Natrium Silika terhadap Natrium Hidroksida (Na2SiO3/NaOH)

Paving block geopolymer is a material synthesized through a polymerization process which can be used in the construction, especially of homes, buildings and roads. The objective of this research are to determine the effect of the concentration of NaOH and sodium silica to sodium hydroxide ratio (Na2SiO3 / NaOH) and characterization of geopolymer paving blocks made from coal ash. Paving block geopolymer prepared by mixing coal ash and fine aggregate and then added liquid activator (sodium hydroxide and sodium silica). Paving block pour into cube mould with size 5x5x5 cm3. Subsequently the mixture put at room temperature for 24 hours and then dried at curing temperature of 90 ° C for 24 hours. Characteristic of geopolymer paving blocks ie compressive strength, density, porosity, morphology and TCLP test were determined. The compressive strength of paving block geopolymer increase with concentration NaOH and sodium silica to sodium hydroxide ratio. The obtained of compressive strength of paving block geopolymer of 13,730 MPa at concentration NaOH 10M and increase to 19,068 Mpa at concentration NaOH 14 M. The highest density of paving block geopolymer is 2,17 gr/cm3 at concentration NaOH 14 M

Reducing Cement Contents of Paving Blocks by Using Mineral Waste and by-Product Materials

In the production of conventional paving blocks, it is usual to use a minimum of 210  kg/m3 of cement. However, when portland cement is produced, it impacts negatively on the environment due to carbon dioxide emissions. Therefore, this paper investigates the use of waste and by-product materials, such as run-of-station ash (ROSA), basic oxygen slag (BOS), ground granulated blast-furnace slag (GGBS), plasterboard gypsum (PG), and cement bypass dust (BPD) to reduce the amount of cement in paving blocks. The combinations of binary and ternary blends in different mixes are considered. Tensile strength, skid/slip and freeze/thaw resistance of paving blocks, verified that a cementitious mix containing ROSA up to 60%, GGBS up to 55%, BPD up to 25%, and plasterboard gypsum PG up to 5% by weight can replace portland cement without having any substantial impact on the strength or durability of the blocks. XRD and XRF tests of selected mixes have been presented and discussed. Concrete blocks prepared with OPC/GGBS/BPD can reduce cement content by up to 30% in comparison to the percent of cement used in factories

The use of bottom ash for replacing fine aggregate in concrete paving blocks

Bottom ash that results from coal burning for electrical generation is still much underutilized in Indonesia and it is necessary to increase the usage of this waste. The manufacture of paving blocks using bottom ash, which is normally associated with high water absorption due to its high porosity and carbon content, was examined in this study with the aim to increase the usage of this waste material. The study was done in three phases: (1) the mixture of cement and bottom ash passing sieves of 2 and 5 mm were done with ratios of 1:3, 1:4, and 1:5; from the best proportion, fly ash was used to replace the cement material from 10�80%, and (3) samples with 30% and 50% fly ash replacement ratios were used in combination with 5 mm and 10 mm sieved bottom ash. Compressive strength, water absorption, and abrasion resistance tests were conducted to assess the properties of the resultant paving block. From the result, bottom ash is used to replace natural sand in making paving blocks. By optimizing the particle packing density and using fly ash as a cement replacement, the compressive strength of paving blocks can exceed 40 MPa

Bata Beton (Paving Block) Geopolimer Dengan Variasi Konsentrasi Serat Sabut Kelapa

Paving blocks geopolymer concrete is a product of the research material mixture of coarse aggregate (gravel), fine aggregate (sand), fly ash, Na2SiO3 and NaOH. One of the problems is the use of paving blocks or cracks caused by tensile stress and urge that occurs, due to the traffic load exceeds his ability. By adding variety to the mix of coco fiber paving block, is expected to improve on the mechanical properties of the mixture is as strong compressive strength and bending. The aim of this study was to analyze the physical and mechanical properties of geopolymer paving block with coco fiber variations and to obtain optimum levels of coco fiber of compressive strength and flexural strength geopolymer paving block. The method used in this study is the experimental method is to make the test specimens in the form of paving blocks are added coconut coir fiber with a variation of 0%, 0.2%, 0.4%, 0.6% of the weight of the fly ash. With the addition of coconut fiber can decrease the compressive strength of the paving blocks on a variation of 0.2%, down by 7.2% of the variation of 0%. As for the increased variety of coco fiber can improve the flexural strength of paving blocks geopolymer on the variation of 0.2% increased by 37.55% of the variation of 0%. The optimum fiber content on bending strength can not be determined because of the test results obtained value of any variation of coconut fiber is still rising. Keywords: paving block, geopolymer, Coconut Coir Fiber, Compressive Strength, Strong Flexible, Fibre Optimum levels

Pemanfaatan Limbah Fly Ash Batubara untuk Pembuatan Paving Block Geopolimer dengan Variasi Temperatur Curing dan Rasio Larutan Aktivator terhadap Fly Ash

Paving blocks used as a construction material for roads, parking area, and city parks. The objectives of this research are to make paving blocks of coal fly ash as a raw material in the manufacturing paving blocks, investigate the effect of curing temperature and the ratio of liquid activator/fly ash on the characteristics of the paving block (compressive strength, porosity, density, crystallinity, and morphology) and testing Toxicity Characteristic Leaching Procedure (TCLP) paving block geopolymer. 247,5 gr of coal fly ash were mixed with 742,5 gr of aggregate (sand) and added 82,88 gr of liquid activator as well as 1,26 gr of superplasticizer inside the container. Then, the mixture was strirred and pour into cube mould with size 5x5x5 cm3, subsequently put at room temperature for 24 hours and dried at a curing temperature of 60 °C, 80 °C, 100 °C. The characteristics of were compressive strength, porosity, density, TCLP, crystallinity, and morphology determined. The result show that increasing curing temperature lead to increasing compressive strength and density while the porosity decreased. The compressive strength, porosity, and density of paving blocks were 19,73-49,33 MPa; 4,0-7,6%; 2,0-2,3 g/cm3; respectively and metal contents Zn, Pb, Cu, Cd were 3,591 mg/L; 1,577 mg/L; 1,079 mg/L; and 0,223 mg/L; respectively. The highes of compressive strength 49,33 MPa was obtained at paving blocks paper at the curing temperature of 100 °C and the ratio of liquid activator/fly ash of 0,7