scholarly journals Carbonized Biomass as a bonding agent for Non-Load Bearing CHB Production

2021 ◽  
Vol 06 (05) ◽  
Author(s):  
Sally Grace B. OSORIO ◽  
Keyword(s):  
Compressive Strength ◽  
Ultimate Compressive Strength ◽  
Bonding Agent ◽  
Weight Density ◽  
Volume Weight ◽  
Compressive Strength Test ◽  
The Difference ◽  
One Way Anova ◽  
Carbonized Biomass ◽  
Better Than

One‌ ‌of‌ ‌the‌ ‌most‌ ‌prominent‌ ‌construction‌ ‌materials‌ ‌for‌ ‌walls‌ ‌in‌ ‌the‌ ‌Philippines‌ ‌is‌ ‌the‌ ‌concrete‌ ‌hollow‌ ‌blocks‌ ‌or‌ ‌CHB‌ ‌due‌ ‌to‌‌ their lower cost‌ ‌than‌ ‌other‌ ‌available‌ ‌materials‌ ‌and‌ ‌the‌ ‌ease‌ ‌of‌ ‌production‌ ‌and‌ ‌installation.‌ To manage our energy and resources, including waste, carbonized‌ ‌biomass‌ ‌as‌ ‌a‌ ‌bonding‌ ‌agent‌ ‌for‌ ‌CHB‌ ‌production was studied to ‌aid‌ ‌in‌ ‌the‌ ‌country's growing‌ ‌need‌ ‌for‌‌construction materials‌ ‌. On-site fabricated CHB with several percent of carbonized biomass (CB) as substitutes for sand (0%, 20%, and 50% CB), including commercial CHB, are subjected to volume, weight, density determination, and ultimate compressive strength test. The gathered data undergo analysis through one-way ANOVA to determine the difference among the gathered compressive strength of CHB produced with different percentages of carbonized biomass. Cost analysis was also done to determine the costs and profitability of the CHB. As a result, the CHB with carbonized biomass as bonding agent produced CHB with low density, ultimate compressive strength better than commercially available CHB (with proper curing applied), and can be more profitable with increasing the carbonized biomass content.

scholarly journals Effects of various liquid-to-powder ratios on the compressive strength of calcium enriched mixture: Original research

2021 ◽  
Vol 15 (2) ◽  
pp. 129-132
Author(s):  
Mohammad Forough Reyhani ◽  
Sheida Hosseinian Ahangarnezhad ◽  
Negin Ghasemi ◽  
Amin Salem Milani
Keyword(s):  
Compressive Strength ◽  
Testing Machine ◽  
Original Research ◽  
Significance Level ◽  
Cem Cement ◽  
Universal Testing ◽  
Demineralized Water ◽  
Compressive Strength Test ◽  
The Mean ◽  
One Way Anova

Background. Calcium-enriched mixture (CEM) cement has been introduced and marketed as a biomaterial for use in furcal perforation repair and apexogenesis procedures, in which the compressive strength that indicates the material’s resistance against crushing is of utmost importance. This study evaluated the effect of various liquid-to-powder ratios on CEM cement’s compressive strength. Methods. One gram of the cement was mixed with 0.5, 0.34, and 0.25 mL of demineralized water and transferred to stainless steel molds (6 and 4 mm in height and diameter, respectively). Five cells in the mold were considered for each group. The compressive strength test was conducted using the universal testing machine after incubating for seven days under 95% humidity at 37°C. One-way ANOVA was applied for data analysis at P≤0.05 significance level. Results. The mean compressive strength in the liquid-to-powder ratios of 0.5, 0.34, and 0.25 were 3.4456, 3.2960, and 3.3485, respectively, with no significant differences between them. Conclusion. Under this study’s limitations, changing the liquid-to-powder ratio did not affect CEM cement’s compressive strength.

scholarly journals PENGARUH CANGKANG KEMIRI SEBAGAI PENGGANTI AGREGAT KASAR TERHADAP SIFAT MEKANIK BETON (EFFECT OF CANDLENUT SHELL AS SUBTITUTE COARSE AGGREGATE TO THE MECHANICAL PROPERTIES OF CONCRETE)

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Mixture ◽  
Construction Technology ◽  
Concrete Compressive Strength ◽  
Coarse Aggregates ◽  
Volume Weight ◽  
Compressive Strength Test

Concrete construction technology is directed to be sustainable and ecofriendly. The waste of the candlenut shell as a substitute for the coarse aggregate of concrete mixture is known that the candlenut shell has a hard texture so it may be used as a substitute for coarse aggregates in concrete. The purpose of the research was to determine the effect of Candlenut shell as a substitute of coarse aggregate on physical properties (slump test, bleeding, segregation, volume weight) and mechanical properties (compressive strength and tensile strength) of concrete using Candlenut shell as replacement material of the coarse aggregate. The variation of the research was percentage of the Candlenut shell in the concrete mixture, that was 0%, 25%, 50%, 75% and 100% to the coarse aggregate volume in the concrete mixture. Number of specimens in reseach was each 5 pieces each variation. Testing of mechanical properties of concrete (compressive strength and tensile strength) was performed at 28 days. Testing of the concrete for compressive strength test and tensile strength on age 28 days. Concrete using candlenut shell as a substitute of coarse aggregates has decreased compressive strength respectively 11.72 MPa (37.71%) for 25% candlenut shell; 15.54 MPa (50.00%) for 50% candlenut shell; 18.35 MPa (59.02%) for 75% candlenut shell; And 18,85 MPa (60,66%) for 100% candlenut shell from of the 0% candlenut shell with compressive strength of 31.08 Mpa. Concrete using for 25% candlenut shell as a substitute for coarse aggregates decreased tensile strength respectively of 0.95 MPa (28.70%) for 25% candlenut shell; 1.21 MPa (36.56%) for 50% candlenut shell; 1.27 MPa (38.37%) for 75% candlenut shell; And 1.40 MPa (42.30%) for 100% candlenut shell from of the 0% candlenut shell with the tensile strength of BN of 3.31 MPa. The decrease in the value of compressive strength and tensile strength is strongly influenced by the increasing percentage of Candlenut shells on concrete

scholarly journals PENGGUNAAN PASIR GALIAN (MATERIAL LOKAL) DI KABUPATEN MERAUKE – PAPUA SEBAGAI KOMPONEN PENYUSUN MORTAR

2021 ◽  
Vol 25 (1) ◽  
pp. 57
Author(s):  
Stanley Larson
Keyword(s):  
Compressive Strength ◽  
Construction Materials ◽  
Clay Particles ◽  
Volume Weight ◽  
Delivery Times ◽  
Organic Impurities ◽  
Compressive Strength Test ◽  
Interior Walls ◽  
Local Materials

One of the infrastructure developments by the Indonesian government is in Merauke Regency. However, the availability of high-quality materials must be imported from outside, which results in high prices and long delivery times. Alternative construction materials continue to be sought and developed, such as the use of local materials. The aim of this research is to determine which sand is the best as mortar mixture. This mortar study used 3 (three) sands from quarries in Merauke, namely Onggari-1, Bupul-5, and Senayu. The ratio of mortar constituent between cement and sand is 1:2 with FAS 0.4, with 5x5x5 cm test object. The properties of each sand tested in original condition while the mortar compressive strength test was carried out at the age of 8 days, 14 days and 28 days. The mortar also will be tested for volume weight, specific gravity, and water absorption. The analysis results showed Onggari-1 met most of all the properties specifications for concrete with clay particles less than 5%, low organic impurities, and well-graded. The compressive strength achieved by Onggari-1 was the highest at 38,45 MPa, followed by Senayu at 26,01 MPa and Bupul-5 at 19,44 MPa at the age of 28 days. The highest increase in quality of each sand occurred at the age of 14 days. Sand from Senayu and Bupul-5 need maintenance in the form of washing the sand and repairing the gradation. Overall, all sands can be used as masonry work that bear large loads such as exterior and interior walls.

scholarly journals KEKUATAN TEKAN MATERIAL SPOILER MOBIL BERBASIS KOMPOSIT ROTAN EPOKSI

POROS ◽  
2018 ◽  
Vol 16 (1) ◽  
Author(s):  
Agustinus Purna Irawan
Keyword(s):  
Compressive Strength ◽  
Product Development ◽  
Free Market ◽  
Strength Test ◽  
Reinforced Composites ◽  
Test Results ◽  
Compressive Strength Test ◽  
The Difference ◽  
Strength Difference

This study aims to obtain the compressive strength of the material of a car spoiler product that was developed using materials from rattan fiber epoxy reinforced composites material. The car spoiler products are car accessories that also function as one of the equipment related to aerodynamics. The study was conducted by making test samples of rattan fiber epoxy reinforced composites and compared with the compressive strength of plastic spoiler materials obtained from the free market. The testing standard used is the compressive strength test of ASTM D 695. Based on the test results obtained compressive strength of spoiler made of plastic is 47.68 ± 1.37 MPa and rattan fiber epoxy reinforced composites material is 43.49 ± 4.21 MPa, with a compressive strength difference of 8.8%. The compressive strength of modeling results obtained a compressive strength of 47.97 MPa. This result is quite good and the difference is quite small, so the results of the study can be used as a reference for further product development.

scholarly journals Study on the Properties and Mechanisms of a Cement-Stabilized Aggregate Mixture With Vibration Mixing

2021 ◽  
Vol 8 ◽  
Author(s):  
Ping Li ◽  
Di Wei ◽  
Dongmei Zhang ◽  
Jianping Xiong ◽  
Sheng Xu
Keyword(s):  
Compressive Strength ◽  
Transition Zone ◽  
Unconfined Compressive Strength ◽  
Great Influence ◽  
Drying Shrinkage ◽  
Influence Mechanism ◽  
Compressive Strength Test ◽  
Interface Transition Zone ◽  
Mixing Method ◽  
Better Than

In order to understand the influence of the vibration mixing method on the performance of cement-stabilized aggregate mixture (CSAM), in this study, an unconfined compressive strength test, drying shrinkage test and the influence of gradation characteristics on compressive strength were used to systematically analyze the performance of CSAM based on vibration mixing. At the same time, the influence mechanism of vibration mixing on the interface transition zone of cement aggregate was analyzed by use of a scanning electron microscope (SEM), and the influence of the mixing method on cement dispersion uniformity was studied by the ethylene diamine tetraacetic acid (EDTA) titration method. The results show that 7 days of unconfined compressive strength and crack resistance of the CSAM with vibration mixing is better than those of the ordinary mixing, and the aggregate grade has a great influence on the compressive strength of the CSAM. Vibration mixing can improve the micro-water-cement ratio uniformity of CSAM and significantly improve the bonding condition of the interface transition zone between cement paste and aggregate, thus enhancing the structural compactness of CSAM. The dispersion uniformity of cement under the vibration mixing is better than that of ordinary mixing.

scholarly journals THE DIFFERENCE ON COMPRESSIVE STRENGTH AND DIMENSIONAL CHANGE OF COMMERCIALLY TYPE III GYPSUM COMPARED TO RECYCLE GYPSUM TYPE III TO PRODUCE WORKING CAST

2016 ◽  
Vol 19 (2) ◽  
pp. 121-127
Author(s):  
Siti Wahyuni ◽  
Haslinda Z Tamin ◽  
Harry Agusnar
Keyword(s):  
Compressive Strength ◽  
Laboratory Experiment ◽  
Manufacturing Process ◽  
Calcium Sulfate ◽  
Dimensional Change ◽  
Type Iii ◽  
Significant Difference ◽  
The Difference ◽  
Recycled Gypsum ◽  
One Way Anova

Gypsum is derived from pure calcium sulfate dehydrate which is a common material that is commonly used in denture manufacturing process. This study aimed to know the difference on compressive strength and dimensional change of commercially type III gypsum compared to recycle type III gypsum to produce working cast. The type of research is laboratory experiment. A total of 40 samples for each test is divided into five groups which consists of commercial type III gypsum,  pure recycled type III gypsum, pure recycled type III gypsum with 10%, 20%, 30% type III commercial gypsum. The difference on compressive strength and dimensional change between the groups was analyzed using one way ANOVA and is them tested with LSD test. The result showed that there was a significant difference (p<0,05) between compressive strength and dimensional change of commercial type III gypsum compared to pure recycled type III gypsum and pure recycled type III gypsum with 10%, 20% and 30% type III commercial gypsum. In conclusion, addition of 30% commercial gypsum in recycled gypsum the compressive strength was higher than other recycled gypsum types.  

scholarly journals THE EFFECT OF ADDITION OF GREEN GLASS POWDER ON THE STRENGTH OF CONE BLOCK PRESSING

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Rachmat Mudiyono
Keyword(s):  
Compressive Strength ◽  
Glass Powder ◽  
Block Structure ◽  
Silica Content ◽  
Strength Test ◽  
Conventional Model ◽  
Compressive Strength Test ◽  
Green Glass ◽  
The Difference

<p class="abstract">At this time the manufacture of products using waste has been developed. One of them is a cone block. In this study, the addition of green glass powder material will be carried out in order to determine the effect on the quality of the cone block. The addition of green glass powder aims to determine the difference in compressive strength against the conventional model cone block. The silica content contained in green glass powder is in the form of pozzolanic substances, a substance in the form of a cement-like content and can replace cement. This study modified the cone block with a mixture of green glass powder from a percentage of 8%, 10% and 15%.</p>Penbased on previous research which states that the addition of more than 10% silica will affect the cone block structure. Tests carried out on cone blocks, namely the compressive strength test. The results of the cone block research on the compressive strength test, in general, the mixed cone block of 8%, 10% and 15% compressive strength decreased due to the slowing of the binding process due to the reduction of the cement element except for the cone block aged 14 days with a mixture percentage of 8% which had an increase.

scholarly journals EFFECT OF CANDLENUT SHELL AS SUBTITUTE COARSE AGGREGATE TO THE MECHANICAL PROPERTIES OF CONCRETE

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Mixture ◽  
Construction Technology ◽  
Concrete Compressive Strength ◽  
Coarse Aggregates ◽  
Volume Weight ◽  
Compressive Strength Test

Concrete construction technology is directed to be sustainable and ecofriendly. The waste of the candlenut shell as a substitute for the coarse aggregate of concrete mixture is known that the candlenut shell has a hard texture so it may be used as a substitute for coarse aggregates in concrete. The purpose of the research was to determine the effect of Candlenut shell as a substitute of coarse aggregate on physical properties (slump test, bleeding, segregation, volume weight) and mechanical properties (compressive strength and tensile strength) of concrete using Candlenut shell as replacement material of the coarse aggregate. The variation of the research was percentage of the Candlenut shell in the concrete mixture, that was 0%, 25%, 50%, 75% and 100% to the coarse aggregate volume in the concrete mixture. Number of specimens in reseach was each 5 pieces each variation. Testing of mechanical properties of concrete (compressive strength and tensile strength) was performed at 28 days. Testing of the concrete for compressive strength test and tensile strength on age 28 days. Concrete using candlenut shell as a substitute of coarse aggregates has decreased compressive strength respectively 11.72 MPa (37.71%) for 25% candlenut shell; 15.54 MPa (50.00%) for 50% candlenut shell; 18.35 MPa (59.02%) for 75% candlenut shell; And 18,85 MPa (60,66%) for 100% candlenut shell from of the 0% candlenut shell with compressive strength of 31.08 Mpa. Concrete using for 25% candlenut shell as a substitute for coarse aggregates decreased tensile strength respectively of 0.95 MPa (28.70%) for 25% candlenut shell; 1.21 MPa (36.56%) for 50% candlenut shell; 1.27 MPa (38.37%) for 75% candlenut shell; And 1.40 MPa (42.30%) for 100% candlenut shell from of the 0% candlenut shell with the tensile strength of BN of 3.31 MPa. The decrease in the value of compressive strength and tensile strength is strongly influenced by the increasing percentage of Candlenut shells on concrete.

Study on the Strength and Acid Alkali Erosion of Improved MSW

2013 ◽  
Vol 405-408 ◽  
pp. 187-190 ◽  
Author(s):  
Lin Liu ◽  
Peng Fei Wu ◽  
Jin Diao Jiang
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Unconfined Compressive Strength ◽  
Strength Test ◽  
Curing Agent ◽  
Alkaline Environment ◽  
Compressive Strength Test ◽  
Better Than

Improving MSW with help of the curing agent mixed with cement, fly ash and gypsum. The unconfined compressive strength test is carried out in different conservation age on the improved MSW; Analyzing the increasing mechanism of improved MSW combined with the method of SEM/EDS. Simulating acid alkaline environment with the liquor of H2SO4 and NaOH and studying the rule of acid and alkali erosion of improved materials. The result of experiment show that improved MSW which contain cement, fly ash and gypsum is better than it only mixed with cement; The strength of improved MSW mixed with cement is better than it only have cement ,and improve more in lye.

scholarly journals Karakteristik Beton Mutu 16,9 MPa Mengunakan 1% Kawat Bendrat dengan Variasi Panjang

2021 ◽  
Vol 5 (3) ◽  
pp. 317-329
Author(s):  
Tri Mulyono
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Unit Weight ◽  
Length Variation ◽  
Split Tensile Strength ◽  
Concrete Material ◽  
Volume Weight ◽  
Research Questions ◽  
The Difference ◽  
Level Of Significance

The research aimed to determine the characteristics of the 16.9 MPa, using steel fibers (bendrat wire) with lenght variations in the concrete mixture 1% by volume-weight of the concrete. This research is an explanatory research with research questions are: how significant is the difference, and what are the characteristics. The total population of each treatment is 12 specimens with a sample of 5 specimens for compressive strength and 4 specimens for split tensile strength for each given treatment which is a random sample, specifically: A (reference concrete); B, C, D, and E for concrete with length variation an expressed as L/D fiber ratio of 50; 62.5; 75 and 87.5. The concrete material meets the standard. At the level of significance 0,05 indicates that the test data are normal distribution and uniform and the characteristics of concrete between reference concrete and concrete fiber different variance values. The unit weight between the reference concrete and the fiber concrete is slightly identical. The slump value decreases with increasing L/D fiber ratio. The concrete characteristics increase up to an L/D fiber ratio of 75. It generates a compressive strength of 19.47% of the design and 16.60% of the reference concrete (17,316 MPa). The split tensile strength is 2,753 MPa (22.29% higher than the design 2,251 MPa) and 18.83% of the reference concrete (2,317 MPa). The flexural strength was 3.638 MPa (18.01% of the 3.083 MPa design) and 1.97% of the reference concrete (3.144 MPa).

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