Correlation between Compressive Strength of Concrete Using Schmidt Rebound Hammer and Universal Testing Machine of Concrete (Replacement of Cement with C.E.T.P Sludge)

2020 ◽  
pp. 170-174
Author(s):  
Neelabh Singh ◽  
Anantha Singh T. S. ◽  
Niragi Dave ◽  
Satvik Pratap Singh ◽  
Pranjal Chaudhary ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Testing Machine ◽  
Rebound Hammer ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Schmidt Rebound Hammer ◽  
Compressive Strength Of Concrete

scholarly journals Comparison of Microleakage and Compressive Strength of Different Base Materials

2021 ◽  
Vol 48 (2) ◽  
pp. 168-175
Author(s):  
Eunyeong Jang ◽  
Jaesik Lee ◽  
Soonhyeun Nam ◽  
Taeyub Kwon ◽  
Hyunjung Kim
Keyword(s):  
Methylene Blue ◽  
Compressive Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Base Material ◽  
Methylene Blue Solution ◽  
Universal Testing Machine ◽  
Base Materials ◽  
Universal Testing ◽  
Blue Solution

This study compared the microleakages and compressive strengths of various base materials.<br/>To evaluate microleakages, 50 extracted permanent premolars were prepared. The teeth divided into 5 groups of 10 each according to the base materials. Cavities with a 5.0 mm width, 3.0 mm length, and 3.0 mm depth were formed on the buccal surfaces of the teeth. After filling the cavities with different base materials, a composite resin was used for final restoration. Each specimen was immersed in 2% methylene blue solution and then observed under a stereoscopic microscope (× 30). To evaluate the compressive strength, 5 cylindrical specimens were prepared for each base material. A universal testing machine was used to measure the compressive strength.<br/>The microleakage was highest in the Riva light cure<sup>TM</sup> group and lowest in the Biodentine<sup>TM</sup> and Well-Root<sup>TM</sup> PT groups. For the compressive strengths, in all groups, acceptable strength values for base materials were found. The highest compressive strength was observed in the Fuji II LC<sup>TM</sup> group and the lowest strength in the Well-Root<sup>TM</sup> PT group.

scholarly journals THE EFFECT OF VOLUME VARIATION OF SILVER NANOPARTICLE SOLUTION TOWARDS THE POROSITY AND COMPRESSIVE STRENGTH OF MORTAR

2016 ◽  
Vol 5 (2) ◽  
pp. 140
Author(s):  
W.S.B. Dwandaru ◽  
H.S.A Tina ◽  
A. Andreyani
Keyword(s):  
Compressive Strength ◽  
Silver Nanoparticle ◽  
Building Materials ◽  
Testing Machine ◽  
X Ray Diffraction ◽  
X Ray ◽  
Universal Testing Machine ◽  
Volume Variation ◽  
Universal Testing ◽  
The World

As the world is growing rapidly, people need better building materials such as mortar. The aim of this research is to determine the effect of adding silver nanoparticle solution towards the porosity and compressive strength of mortar. This research was started by making silver nanoparticle solution from nitrate silver (AgNO3). The solution is then characterized using Uv-Vis spectrophotometer. 5 mM silver nanoparticle is added in the process of mortar production with volume variation of the silver nanoparticle solution. The porosity, compressive strength, and the content of mortar were determined by digital scale, universal testing machine, and X-ray diffraction, respectively. For silver nanoparticle solution volumes of (in mL) 0, 5, 10, 15, 20, and 25 the porosity obtained are (in %) 20.38, 19.48, 19.42, 18.9, 17.8, and 17.5, respectively. The best increase in compressive strength is obtained for (in MPa) 29,068, 29,308, and 31,385, with nanoparticle solution volumes of (in mL) 5, 10, and 15 Keywords: mortar, silver nanoparticle, compressive strength

scholarly journals Pengaruh penambahan aluminium oksida terhadap kekuatan tarik dan tekan basis gigi tiruan resin akrilik polimerisasi panasThe effect of addition of aluminium oxide on the tensile and compressive strength of a heat-polymerised acrylic resin denture base

2018 ◽  
Vol 30 (3) ◽  
pp. 189
Author(s):  
Actara Rahmadita ◽  
Dwi Tjahyaning Putranti
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Testing Machine ◽  
Base Material ◽  
Aluminium Oxide ◽  
Acrylic Resin ◽  
Strength Test ◽  
Denture Base ◽  
Universal Testing Machine ◽  
Universal Testing

Pendahuluan: Resin akrilik polimerisasi panas (RAPP) merupakan bahan basis gigi tiruan yang paling banyak digunakan, namun memiliki sifat kekuatan tarik dan tekan yang rendah, sehingga diperlukan modifikasi dengan penambahan bahan penguat pada RAPP berupa aluminium oksida (Al2O3) atau alumina. Tujuan penelitian untuk menganalisi pengaruh penambahan aluminium oksida pada bahan basis gigi tiruan RAPP terhadap kekuatan tarik dan tekan. Metode: Jenis penelitian eksperimental laboratoris. Sebanyak 25 sampel berbentuk flat dumbbell shaped berukuran 60x12x3,9 (mm) untuk uji kekuatan tarik dan 25 sampel  berbentuk balok dengan ukuran 10x10x4 (mm) untuk uji kekuatan tekan. Pencampuran bubuk resin-aluminium oksida konsentasi 0,5%, 1,5%, 2,5% dan 3,5% dengan cairan resin dilakukan secara manual. Sampel direndam dalam air dan dimasukkan ke dalam inkubator. Uji dilakukan menggunakan universal testing machine dengan beban 1000N dan kecepatan crosshead 1mm/menit. Data dianalisis dengan uji ANOVA satu arah dan uji LSD. Hasil: Nilai kekuatan tarik kelompok kontrol dan keempat kelompok perlakuan penambahan aluminium oksida 0,5%, 1,5%, 2,5 %, 3,5% berturut turut adalah 50,867 MPa, 47,895 MPa, 45,107 MPa, 42,476 MPa, dan 39,753 MPa; sedangkan nilai kekuatan tekan kelompok kontrol dan keempat kelompok perlakuan penambahan aluminium oksida 0,5%, 1,5%, 2,5%, 3,5% berturut turut adalah 88,267 MPa, 106,085 MPa, 122,283 MPa, 135,367 MPa, dan 156,571 MPa. Penambahan bubuk aluminium oksida pada RAPP dapat menurunkan kekuatan tarik dan meningkatkan kekuatan tekan secara signifikan (p=0,0001 (p<0,05)), seiring dengan meningkatnya jumlah konsentrasi aluminium oksida yang ditambahkan. Simpulan: Penambahan aluminium oksida pada bahan basis gigi tiruan resin akrilik polimerisasi panas berpengaruh terhadap kekuatan tarik dan tekan.Kata kunci: Resin akrilik polimerisasi panas, aluminium oksida, kekuatan tarik, kekuatan tekan. ABSTRACT            Introduction: Heat-polymerised acrylic resin (HPAR) is the most widely used denture base material but has a low tensile and compressive strength thus modification is needed by adding reinforcement in the form of aluminium oxide (Al2O3) or alumina. The research objective was to analyse the effect of adding aluminium oxide on the tensile and compressive strength of HPAR denture base material. Methods: An experimental laboratory research was conducted towards the total of 25 samples in the form of flat dumbbell shape sized 60 x 12 x 3.9 mm for the tensile strength test, and 25 samples in the form of blocks with the size of 10 x 10 x 4 mm for the compressive strength test. The mixture of powdered aluminium oxide resin with the concentrations of 0.5%, 1.5%, 2.5%, and 3.5% with a liquid resin was carried out manually. The sample was then immersed in the water and put in an incubator. The test was performed using a universal testing machine with 1000 N loads and 1 mm/minute crosshead speed. Data obtained were analysed using the one-way ANOVA and LSD test. Result: The tensile strength values of the control group and all four treatment groups added with 0.5%, 1.5%, 2.5%, and 3.5% aluminum oxide were 50.867 MPa, 47.895 MPa, 45.107 MPa, 42.4476 MPa and 39.753 MPa respectively, while the compressive strength values were 88.267 MPa, 106.085, 122.283 MPa, 135.367 MPa, and 156.571 MPa consecutively. Addition of aluminium oxide powder to the HPAR can significantly reduce the tensile and compressive strength (p = 0.0001 (p < 0.05)) along with increasing concentration. Conclusion: Addition of aluminium oxide towards the HPAR denture base affected its tensile and compressive strength.Keywords: Heat-polymerised acrylic resin, aluminium oxide, tensile strength, compressive strength.

scholarly journals Utilization of Construction Waste Tiles as a Replacement for Fine Aggregates in Concrete

2017 ◽  
Vol 7 (5) ◽  
pp. 1930-1933 ◽  
Author(s):  
A. A. Adekunle ◽  
K. R. Abimbola ◽  
A. O. Familusi
Keyword(s):  
Compressive Strength ◽  
Testing Machine ◽  
Partial Replacement ◽  
Construction Waste ◽  
Universal Testing Machine ◽  
Coarse Aggregates ◽  
Universal Testing ◽  
Fine Aggregates ◽  
Concrete Production

Ceramic wastes are found to be suitable for usage as substitution for fine and coarse aggregates in concrete production. This study is an investigation into the utilization of waste tiles as partial replacement for fine and coarse aggregates in concrete. The control mix and other mixes containing cement, water, granite and partial replacement for sand with crushed tiles (in 5%, 10%, 15% and 20% proportions) were cast, cubed, cured and crushed. Also, another mix containing cement, water, sand and partial replacement of granite with crushed tiles (in 25%, 50% and 75% proportions) were cast, cubed, cured and crushed. The specimens were tested for their respective compressive strengths using the Universal Testing Machine (UTM) on the 7th, 14th, 21st and 28th days of curing. At 28 days, the compressive strength value of 5% of fine-waste tiles replacement was 20.12 N/mm2 while that of 10%, 15% and 20% were 14.24 N/mm2, 11.04 N/mm2 and 10.12 N/mm2 respectively. Moreover, at 28 days, the compressive strength of 25% of coarse-waste tiles replacement shows an increase to 22.45 N/mm2 while that of 50% and 75% were 18.4 N/mm2 and 12.2 N/mm2 respectively. Thus it can be concluded that fine aggregates can be substituted at 5% waste tiles while coarse aggregates can be substituted at 25% waste tiles.>/p>

scholarly journals Komparasi Pengujian Mutu Beton dengan Menggunakan Metode SNI 03-4430-1997 dan SNI 1974-1990 dalam Kegiatan Pengabdian Masyarakat di Laboratorium Struktur dan Bahan Konstruksi Universitas Brawijaya

2018 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Sugeng Hendik ◽  
Dhino Teguh
Keyword(s):  
Compressive Strength ◽  
Testing Machine ◽  
Strength Test ◽  
Sample Type ◽  
Destructive Test ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Compressive Strength Test ◽  
Non Destructive ◽  
Test Result

ABSTRAK Penelitian ini adalah penelitian eksperimental yang dilakukan di laboratorium, untuk mengetahui perbandingan pengukuran kekuatan beton pada kegiatan pengabdian masyarakat di Laboratorium Struktur dan Bahan Konstruksi Fakultas Teknik Universitas Brawijaya. Pengukuran kekuatan beton bisa menggunakan metode merusak dan tidak merusak. Tujuan dari penelitian ini untuk mendapatkan konstanta pengali nilai hasil pengujian Hammer Test, sehingga hasilnya bisa mendekati hasil pengujian dengan menggunakan Mesin Uji Tekan. Adapun variabel penelitian adalah jenis sampel dan metode pengujian. Jumlah sampel untuk setiap umur beton adalah 20 silinder dan 20 kubus, sehingga total adalah 40 buah sampel beton, setelah itu dilakukan pengujian kekuatan dengan menggunakan metode non destruktif dan dengan bahan yang sama dilakukan pengujian kuat tekan dengan metode destruktif. Hasil penelitian ini menunjukkan bahwa pengujian dengan menggunakan hammer test nilainya lebih rendah dibandingkan dengan pengujian dengan Compression Machine dan didapatkannya konstanta pengali sebesar 0,88. Sehingga dengan menggunakan nilai hasil pengujian dengan alat hammer test estimasi kekuatan beton bisa diukur terlebih dahulu tanpa menggunakan metode Destruktif Kata-kata kunci : pengujian merusak dan tidak merusak, mesin uji tekan, uji kekerasan ABSTRACT This research is experimental research conducted at laboratory, to find the comparison of strength measurement of concrete in Community Service Activities at Laboratory of Structures and Construction Materials can use the method of destructive and non-destructive. The main purpose of this research is to get the value of multiplier constant from the test result of Hammer Test, so the result can come near to the test result by using Compression Machine. The research variable are; sample type (cube of 15 x 15 and cylinder of 15 x 30), testing method (hammer test vs Universal testing machine). The number of concrete cylinder sample (Ø 15 cm x 30cm) for each concrete age is 20 of cylinder and 20 of cube, so the total is 40 pcs of concrete sample, after that, compressive strength test is performed by using method of non-destructive and by the same materials, compressive strength test is performed by using method of destructive. The result of this research is prove that value test by using Hammer Test is lower that using Compression Machine and the obtained of multiplier constant is 0.88. So by using value of test result with hammer test, estimation of concrete strength can be measured in advance without using method of destructive. Keywords : destructive test, non-destructive test, universal testing machine, hammer test

scholarly journals UJI PENGARUH SALIVA BUATAN TERHADAP KEKUATAN TEKAN SEMEN IONOMER KACA TIPE II YANG DIRENDAM DALAM MINUMAN ISOTONIK

e-GIGI ◽  
2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Dwi Cahya Fitriyana ◽  
D. H. C. Pangemanan ◽  
Juliatri .
Keyword(s):  
Compressive Strength ◽  
Artificial Saliva ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Type Ii ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Significant Difference ◽  
Post Hoc ◽  
One Way Anova

Abstract: The immersion of GIC type II in acid drink like isotonic drink could reduce the compressive strength (CS) of GIC type II. This is due to the matrix degradation process of  GIC in acid condition. But on the other hand, there is artificial saliva that can neutralize this condition. Purpose: Purpose of this study was to evaluate the effect of artificial saliva on compressive strength of GIC type II immersed in isotonic drink. Method: The GIC specimens of 6mm x 6mm x 12mm (length x width x depth) were immersed for 24 hours in water, 24 hours in isotonic drink, 24 hours in isotonic drink and continue with 72 hours in artificial saliva, 48 hours in isotonic drink, and 48 hours in isotonic drink and continue with 144 hours in artificial saliva. The compressive strength was determined using Universal Testing Machine with a crosshead speed of 0.5 mm/min. Statistical analysis was performed by one-way ANOVA and post-hoc LSD test ( = 0.05). Result: Statistic test shows significant difference of CS (p<0,05). Conclusion: conclusion of this study artificial saliva gives effect to the rising of the compressive strength of GIC type II immersed in isotonic drink. Keywords: Isotonic drink, artificial saliva, compressive strength, Glass Ionomer Cement       type II.  Abstrak: Perendaman SIK tipe II dalam minuman asam seperti minuman isotonik dapat mengurangi kekuatan tekan SIK tipe II. Hal ini disebabkan proses degradasi matriks SIK pada kondisi asam. Namun di sisi lain, saliva buatan yang dapat menetralkan kondisi ini. Tujuan: untuk untuk mengetahui pengaruh saliva buatan terhadap kekuatan tekan SIK yang direndam dalam minuman isotonik. Metode: Spesimen SIK tipe II berukuran 6mm x 6mm x 12 mm (panjang x lebar x tinggi) direndam selama 24 jam dalam air, 24 jam di dalam minuman isotonik, 24 jam di dalam minuman isotonik dan lanjutkan dengan 72 jam pada saliva buatan, 48 jam di minuman isotonik, dan 48 jam di minum isotonik dan lanjutkan dengan 144 jam dalam saliva buatan. Kekuatan tekan diukur menggunakan Universal Testing Machine dengan kecepatan 0,5 mm / min. Analisis statistik dilakukan dengan one-way ANOVA dan post-hoc uji LSD ( = 0,05). Hasil: Uji statistik menunjukkan perbedaan yang signifikan dari kekuatan tekan (p <0,05). Simpulan: terdapat pengaruh saliva buatan terhadap kekuatan tekan SIK tipe II yang direndam dalam minuman isotonik. Kata kunci: minuman isotonik, saliva buatan, kekuatan tekan, Semen Ionomer Kaca tipe II.

scholarly journals Mechanical Properties of the Composite Material consisting of β-TCP and Alginate-Di-Aldehyde-Gelatin Hydrogel and Its Degradation Behavior

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1303
Author(s):  
Michael Seidenstuecker ◽  
Thomas Schmeichel ◽  
Lucas Ritschl ◽  
Johannes Vinke ◽  
Pia Schilling ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Protein Concentration ◽  
Failure Load ◽  
Testing Machine ◽  
Experimental Period ◽  
Flow Chamber ◽  
Degradation Behavior ◽  
Gelatin Hydrogel ◽  
Universal Testing

This work aimed to determine the influence of two hydrogels (alginate, alginate-di-aldehyde (ADA)/gelatin) on the mechanical strength of microporous ceramics, which have been loaded with these hydrogels. For this purpose, the compressive strength was determined using a Zwick Z005 universal testing machine. In addition, the degradation behavior according to ISO EN 10993-14 in TRIS buffer pH 5.0 and pH 7.4 over 60 days was determined, and its effects on the compressive strength were investigated. The loading was carried out by means of a flow-chamber. The weight of the samples (manufacturer: Robert Mathys Foundation (RMS) and Curasan) in TRIS solutions pH 5 and pH 7 increased within 4 h (mean 48 ± 32 mg) and then remained constant over the experimental period of 60 days. The determination surface roughness showed a decrease in the value for the ceramics incubated in TRIS compared to the untreated ceramics. In addition, an increase in protein concentration in solution was determined for ADA gelatin-loaded ceramics. The macroporous Curasan ceramic exhibited a maximum failure load of 29 ± 9.0 N, whereas the value for the microporous RMS ceramic was 931 ± 223 N. Filling the RMS ceramic with ADA gelatin increased the maximum failure load to 1114 ± 300 N. The Curasan ceramics were too fragile for loading. The maximum failure load decreased for the RMS ceramics to 686.55 ± 170 N by incubation in TRIS pH 7.4 and 651 ± 287 N at pH 5.0.

Study on Characteristics of Ultrasonic Velocity for the Concrete under Stress

2013 ◽  
Vol 438-439 ◽  
pp. 220-223 ◽  
Author(s):  
Ling Zhang ◽  
Chun Ling Yan
Keyword(s):  
Ultimate Strength ◽  
Ultrasonic Velocity ◽  
Ultrasound Examination ◽  
Testing Machine ◽  
Strength Level ◽  
Growth Trend ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Three Stages ◽  
The Relationship

Cube concrete (150×150×150mm) of five ages (7, 14, 21, 28 and 35 days) under different stress conducted the ultrasound examination by non-metallic detector and universal testing machine. The results show that the relationship curve of the stress and the ultrasonic velocity can be divided into three stages, the smooth straight stage, the linear deceleration stage and the attenuation destruction stage from the load beginning to the ultimate strength for the same age. There is a growing trend about the ultrasonic velocity with the increase of the age to concrete samples of C10 and C20 in the same loading; however, the overall growth trend of the velocity is not obvious to concrete samples of C30, C35, C40 and C45. It also shows that the relationship curve of strength level and the velocity can be divided into two distinct stages, the sharply increasing stage (C10-C30) and the fluctuating stage (C30-C45). Simultaneously, the paper further illustrates and explains the reasons to appear these stages and the phenomena.

Dynamic and Quasi-Static Compressive Deformation Behaviour of Polyimide Foam at Various Elevated Temperature

2014 ◽  
Vol 566 ◽  
pp. 158-163 ◽  
Author(s):  
A. Yosimoto ◽  
Hidetoshi Kobayashi ◽  
Keitaro Horikawa ◽  
Keiko Watanabe ◽  
Kinya Ogawa
Keyword(s):  
Compressive Strength ◽  
Room Temperature ◽  
Deformation Behaviour ◽  
Testing Machine ◽  
Negative Temperature ◽  
Strain Rates ◽  
Compression Tests ◽  
Hopkinson Pressure Bar ◽  
Universal Testing ◽  
Pressure Bar

In order to clarify the effect of strain rate and test temperature on the compressive strength and energy absorption of polyimide foam, a series of compression tests for the polyimide foam with two different densities were carried out. By using three testing devices, i.e. universal testing machine, dropping weight machine and sprit Hopkinson pressure bar apparatus, we performed a series of compression tests at various strain rates (10-3~103s-1) and at several test temperatures in the range of room temperature to 280 ̊C. At over 100 s-1, the remarkable increase of flow stress was observed. The negative temperature dependence of strength was also observed.

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