Physical-Mechanical Properties of Cement Composite Building Materials with the Use of Waste of CWB Production

2017 ◽  
Vol 749 (6) ◽  
pp. 7-9
Author(s):  
N.V. KUZNETSOVA ◽  
◽  
O.S. BARINOVA ◽  
Keyword(s):  
Mechanical Properties ◽  
Building Materials ◽  
Cement Composite

REKAYASA SEMEN KOMPOSIT LIMBAH SERUTAN BAMBU SEBAGAI BAHAN ALTERNATIF PERKERASAN JALAN (PAVING BLOCK)

2017 ◽  
Vol 14 (1) ◽  
pp. 20 ◽  
Author(s):  
Eratodi IGLB ◽  
Ariawan Putu
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Building Materials ◽  
Concrete Slab ◽  
Mass Density ◽  
Physical And Mechanical Properties ◽  
Cement Composite ◽  
Modulus Of Rupture ◽  
Composite Cement ◽  
Waste Mixture

Rigid concrete pavement is a pavement needed on a special typical load area and alsoneeded a low maintenance. Problems arise when there is limited sand material available and the costis also expensive. Solutions developed in this research apply cement composite materials mixedwith bamboo shavings waste hence building materials that are lightweight, environmentally friendlyand has the character of a concrete class were obtained. This cement composite material hasadvantages in utilization of bamboo shaving waste and therefore reduces environmental pollution.The purpose of this research were to engineer alternative paving materials in the form of pavingblock made of bamboo shaving waste mixture composite cement. This research has obtained theoptimum physical and mechanical properties of the composite cement material and paving block at aspecific mixture composition. The physical and mechanical properties that are tested on pavingblock samples had five compositions variation of cement (S): sand (P): and bamboo fibre (B) of1:6:0; 1:4.5:1.5; 1:3:3; 1:1.5:4.5; and 1:0:6 respectively with catalyst of CaCl2 as much as 3 %volume. The results have showed that the physical properties of the concrete slab have optimumwater content of 16.67 % at variation of 1:4.5:1.5 and optimum mass density of 0.550 kg/m3 atvariation of 1:3:3. The mechanical properties test of the concrete slab have showed meancompressive strength of 19.8 MPa, mean Modulus of Rupture (MOR) of 16.40 MPa and meanModulus of Elasticity (MOE) of 11,500 MPa respectively at variation of 1:4.5:1.5. Optimum wearresistance value at variation of 1:3:3 on average were 0.698 mm/min. The physical properties testresults for the paving block had mean water content of 6.77 % and mean mass density of 0.761kg/m3 respectively at variation of 1:3:3. The value of mean MOR, mean MOE and mean wearresistance were 27.16 MPa, 11,583 MPa and 0.864 mm/min respectively for variation of 1:3:3. Abstrak: Perkerasan jalan beton merupakan perkerasan yang dibutuhkan pada area bertipikal bebankhusus dan low maintenance. Permasalahan penggunaan beton muncul ketika ketersediaan bahanpasir terbatas dan harganya mahal. Solusi yang dikembangkan dalam penelitian ini menerapkanbahan komposit semen dengan limbah serutan bambu sehingga diperoleh bahan bangunan yangringan, ramah lingkungan dan memiliki karakter sekelas beton. Bahan semen komposit ini memilikikeuntungan dalam pendayagunaan limbah serutan bambu sehingga ikut mengurangi pencemaranlingkungan. Tujuan penelitian ini adalah membuat rekayasa komponen bahan alternatif perkerasanjalan dalam bentuk paving block dari semen komposit campuran bahan limbah serutan bambu.Penelitian ini mendapatkan sifat fisika dan mekanika optimum bahan semen komposit dan pavingblock pada komposisi campuran tertentu. Sifat fisika dan mekanika yang diuji pada benda uji pavingblock dengan 5 variasi perbandingan semen(S): pasir(P): dan serat bambu(B), yaitu 1:6:0; 1:4,5:1,5;1:3:3; 1:1,5:4,5 dan 1:0:6 dengan katalis CaCl2 sebanyak 3% volume. Hasilnya menunjukkan sifatfisika papan semen memiliki nilai optimum kadar air 16,67% pada variasi 1:4,5:1,5 dan berat jenisoptimum 0,550 kg/m3 pada variasi 1:3:3. Hasil uji sifat mekanika papan semen yaitu kuat tekan rataratasebesar 19,8 MPa, Modulus of Repture (MOR) rata-rata sebesar 16,40 MPa dan Modulus ofElasticity (MOE) rata-rata sebesar 11.500 MPa pada variasi 1:4,5:1,5. Nilai ketahanan aus optimumpada variasi 1:3:3 rata-rata sebesar 0,698 mm/menit. Hasil uji sifat fisika paving block dengan kadarair rata-rata 6,77% dan kerapatan rata-rata 0,761 kg/m3 pada variasi 1:3:3. Nilai rata-rata MOR,MOE dan ketahanan aus masing-masing sebesar 27,16 MPa, 11.583 MPa, dan 0,864 mm/menit padavariasi 1:3:3.Kata kunci : Serutan bambu, semen komposit, paving block.

Polymer-Based Repair Mortar Containing Waste Perlite Powder

2021 ◽  
Vol 898 ◽  
pp. 73-79
Author(s):  
Radek Hermann ◽  
Jakub Hodul ◽  
Aleš Jakubík
Keyword(s):  
Mechanical Properties ◽  
Bonding Strength ◽  
Building Materials ◽  
Expanded Perlite ◽  
High Bonding Strength ◽  
Repair Mortar ◽  
Very High

This paper deals with the problematics of utilization of waste perlite from production of expanded perlite in polymer-based material. The goal of this paper is to develop repair mortar containing as high amount of waste perlite as possible as substitution for filler. The resulting mortar exhibits very high physical-mechanical properties such as high bonding strength to a large variety of building materials. The microstructure and the re-dispersibility of filler were also studied.

Study of the Effect of PP and LDPE Thermoplastic Binder Addition on the Mechanical Properties and Physical Properties of Particulate Composites for Building Material Application

2019 ◽  
Vol 964 ◽  
pp. 115-123
Author(s):  
Sigit Tri Wicaksono ◽  
Hosta Ardhyananta ◽  
Amaliya Rasyida ◽  
Feisha Fadila Rifki
Keyword(s):  
Mechanical Properties ◽  
Compression Strength ◽  
Building Materials ◽  
Construction Material ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Waste Recycling ◽  
Plastic Waste ◽  
Particulate Composites ◽  
Water Absorbability

Plastic waste is majority an organic material that cannot easily decomposed by bacteria, so it needs to be recycled. One of the utilization of plastic waste recycling is become a mixture in the manufacture of building materials such as concrete, paving block, tiles, roof. This experiment purpose to find out the effect of addition of variation of LDPE and PP thermoplastic binder to physical and mechanical properties of LDPE/PP/Sand composite for construction material application. In this experiment are using many tests, such are SEM, FTIR, compression strength, density, water absorbability, and hardness. the result after the test are the best composition of composite PP/LDPE/sand is 70/0/30 because its have compression strength 14,2 MPa, while density value was 1.30 g/cm3, for the water absorbability is 0.073%, and for the highest hardness is 62.3 hardness of shore D. From the results obtained, composite material can be classified into construction materials for mortar application S type with average compression strength is 12.4 MPa.

scholarly journals Mechanical Properties of Concrete with Various Water-Cement Ratio After High Temperature Exposure

2019 ◽  
Vol 2 (2) ◽  
pp. 126-136
Author(s):  
M.I Retno Susilorini ◽  
Budi Eko Afrianto ◽  
Ary Suryo Wibowo
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
High Temperature ◽  
Modulus Of Elasticity ◽  
Building Materials ◽  
Heating Process ◽  
High Temperature Exposure ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Temperature Exposure

Concrete building safety of fire is better than other building materials such as wood, plastic, and steel,because it is incombustible and emitting no toxic fumes during high temperature exposure. However,the deterioration of concrete because of high temperature exposure will reduce the concrete strength.Mechanical properties such as compressive strength and modulus of elasticity are absolutely corruptedduring and after the heating process. This paper aims to investigate mechanical properties of concrete(especially compressive strength and modulus of elasticity) with various water-cement ratio afterconcrete suffered by high temperature exposure of 500oC.This research conducted experimental method and analytical method. The experimental methodproduced concrete specimens with specifications: (1) specimen’s dimension is 150 mm x 300 mmconcrete cylinder; (2) compressive strength design, f’c = 22.5 MPa; (3) water-cement ratio variation =0.4, 0.5, and 0.6. All specimens are cured in water for 28 days. Some specimens were heated for 1hour with high temperature of 500oC in huge furnace, and the others that become specimen-controlwere unheated. All specimens, heated and unheated, were evaluated by compressive test.Experimental data was analyzed to get compressive strength and modulus of elasticity values. Theanalytical method aims to calculate modulus of elasticity of concrete from some codes and to verifythe experimental results. The modulus elasticity of concrete is calculated by 3 expressions: (1) SNI03-2847-1992 (which is the same as ACI 318-99 section 8.5.1), (2) ACI 318-95 section 8.5.1, and (3)CEB-FIP Model Code 1990 Section 2.1.4.2.The experimental and analytical results found that: (1) The unheated specimens with water-cementratio of 0.4 have the greatest value of compressive strength, while the unheated specimens with watercementratio of 0.5 gets the greatest value of modulus of elasticity. The greatest value of compressivestrength of heated specimens provided by specimens with water-cement ratio of 0.5, while the heatedspecimens with water-cement ratio of 0.4 gets the greatest value of modulus of elasticity, (2) Allheated specimens lose their strength at high temperature of 500oC, (3) The analytical result shows thatmodulus of elasticity calculated by expression III has greater values compares to expression I and II,but there is only little difference value among those expressions, and (4)The variation of water-cementratio of 0.5 becomes the optimum value.

scholarly journals Influence of nanocellulose on the hydration process of Portland cement and concrete properties

2020 ◽  
Vol 17 (5) ◽  
pp. 155-160
Author(s):  
V. I. Khirkhasova ◽  
Keyword(s):  
Mechanical Properties ◽  
Portland Cement ◽  
Physical And Mechanical Properties ◽  
Cement Composite ◽  
High Density ◽  
Strength Characteristics ◽  
New Method ◽  
Concrete Properties ◽  
Hardening Process ◽  
Study Results

The paper deals with modification of cement composite and concrete with nanocellulose in low and high density. The author presents the study results of the influence of nanocellulose on the cement composite hardening process, as well as the physical and mechanical properties of heavy concrete. The influence of the used additive on the rheological and strength characteristics of concrete is revealed. A new method is proposed to improve the material performance.

scholarly journals Using scanned images to estimate salt formation on the surface of cement composites

Vestnik MGSU ◽  
2020 ◽  
pp. 1523-1533
Author(s):  
Vladimir T. Erofeev ◽  
Victor V. Afonin ◽  
Tatiana F. Elchishcheva ◽  
Marina M. Zotkina ◽  
Irina V. Erofeeva
Keyword(s):  
Building Materials ◽  
Control Sample ◽  
Cement Composite ◽  
Operating Conditions ◽  
Cement Composites ◽  
High Humidity ◽  
Grayscale Image ◽  
Salt Formation ◽  
Scanned Images ◽  
Composite Samples

Introduction. An engineering method is proposed for assessing salt formation on the surface of cement composites exposed to adverse operating conditions. The technique is based on the histogram method used to determine the dominant brightness of the half-tone image of scanned cement composites. The criterion for ranking composites is a relative dimensionless value –– a metric obtained by comparing the brightness of a grayscale image with the brightness level of white. Materials and methods. We selected three types of compositions of composites in the amount of 21 items; each of them contains three samples –– a control sample and samples exposed to high humidity and positive temperatures for 15 and 45 days. Each composition is represented by a scanned raster image of the sample surface. The images are further subjected to digital processing using a software program written in the C++ programming language and the OpenCV technical vision library. This allows you to use the available methods and classes to develop algorithms to solve the problem in question and to convert a full-color RGB image to a grayscale image. Such images are used to analyze histograms, which determine the dominant level of brightness to determine the numerical metric for quantifying the salt formation on the surface of cement composite samples on the basis of their scanned images. Results. A description of the software algorithm, used to detect salt formation on the surface of cement composite specimens that have passed performance tests under high humidity conditions at positive temperatures, is presented. The method of ranking cement composite samples using the values of their dominant brightness relative to the brightness of control samples is shown. The comparative analysis of the study is presented in the form of numerical data and explanatory diagrams. Conclusions. Software modeling is employed to demonstrate the expediency of the methodology for the assessment of salt formation on the surface of cement composites and other building materials prone to salt formation.

scholarly journals Physical and Mechanical Properties of Wood-Cement Composite with Lignocellulosic Grading Waste Variation

2014 ◽  
Vol 4 (2) ◽  
pp. 69-72 ◽  
Author(s):  
Ronquim Renato Marini ◽  
Ferro Fabiane Salles ◽  
Icimoto Felipe Hideyoshi ◽  
Campos Cristiane Inácio ◽  
Bertolini Marília da Silva ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Cement Composite

scholarly journals Physical and Mechanical Properties of Cemented Ash-Based Lightweight Building Materials with and without Pumice

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Neslihan Doğan-Sağlamtimur ◽  
Adnan Güven ◽  
Ahmet Bilgil
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Building Material ◽  
Building Materials ◽  
Physical And Mechanical Properties ◽  
Mixing Ratio ◽  
Lightweight Material ◽  
Important Input ◽  
Axial Compressive Strength ◽  
International Companies

Pumice, cements (CEM I- and CEM II-type), waste fly and bottom ashes (IFA, GBA, and BBA) supplied from international companies were used to produce lightweight building materials, and physical-mechanical properties of these materials were determined. Axial compressive strength (ACS) values were found above the standards of 4 and 8 MPa (Bims Concrete (BC) 40 and 80 kgf/cm2 class) for cemented (CEM I) pumice-based samples. On the contrary, the ACS values of the pumice-based cemented (CEM II) samples could not be reached to these standards. Best ACS results (compatible with BC80) from these cemented lightweight material samples produced with the ashes were found in 50% mixing ratio as 10.6, 13.2, and 20.5 MPa for BBA + CEM I, GBA + CEM II, and IFA + CEM I, respectively, and produced with pumice were found as 8.4 MPa (same value) for GBA + pumice + CEM II (in 25% mixing ratio), BBA + pumice + CEM I (in 100% mixing ratio), and pumice + IFA + CEM I (in 100% mixing ratio), respectively. According to the results, cemented ash-based lightweight building material produced with and without pumice could widely be used for constructive purposes. As a result of this study, an important input to the ecosystem has been provided using waste ashes, whose storage constitutes a problem.

Properties of Spanish Broom Fiber Reinforced Concrete

2021 ◽  
Vol 322 ◽  
pp. 72-77
Author(s):  
Sandra Juradin ◽  
Ivica Boko ◽  
Ivanka Netinger Grubeša ◽  
Dražan Jozić ◽  
Silvija Mrakovčić ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Building Materials ◽  
Tap Water ◽  
Reinforce Concrete ◽  
Climatic Conditions ◽  
Fiber Reinforced Concrete ◽  
Hardened Concrete ◽  
Fiber Reinforced ◽  
Plant Fibers

Building materials based on renewable resources such as plant fibers are increasingly needed, especially if the plant is local and easily accessible. One such plant is the Spanish broom, a typical shrub of the Mediterranean region. In this work, Spanish broom fibers were used for the first time to reinforce concrete. Four mixtures were made: a reference mixture and three mixtures reinforced with 3 cm long fibers, in the amount of 0.5% of the total volume. Cement CEM I 42.5R, crushed limestone aggregate (D = 16 mm), and tap water were used for all the mixtures and in equal quantities. Four mortar mixtures were also made: standard mortar and 3 fiber-reinforced mortars. The mortar is reinforced with fibers of the same length and quantity as the concrete. The fibers were obtained by maceration of Spanish broom in solutions of 8%, 10%, and 15% NaOH. The quality and mechanical properties of the cellulose fibers depend on the geographical and climatic conditions and the fiber extraction procedures so the aim of this study was to evaluate the influence of different chemical pre-treatments of the fibers on the mechanical properties of the concrete. The properties of the fresh mix were determined using the flow method. Hardened concrete was tested for compressive and flexural strength and dynamic modulus of elasticity. Compressive and flexural strengths were determined on cement mortars. The results obtained on concrete were compared with those obtained on the mortar. It was concluded that the quality of composite materials is more influenced by the quality of the placement than by fiber treatment.

Cellulose Fibres as a Reinforcing Element in Building Materials

2017 ◽  
Author(s):  
Viola Hospodarova ◽  
Nadezda Stevulova ◽  
Vojtech Vaclavik ◽  
Tomas Dvorsky ◽  
Jaroslav Briancin
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Compressive Strength ◽  
Building Materials ◽  
Reference Sample ◽  
Physical And Mechanical Properties ◽  
Natural Fibre ◽  
Cement Composites ◽  
Cellulose Fibres ◽  
Cellulosic Fibres

Nowadays, construction sector is focusing in developing sustainable, green and eco-friendly building materials. Natural fibre is growingly being used in composite materials. This paper provides utilization of cellulose fibres as reinforcing agent into cement composites/plasters. Provided cellulosic fibres coming from various sources as bleached wood pulp and recycled waste paper fibres. Differences between cellulosic fibres are given by their physical characterization, chemical composition and SEM micrographs. Physical and mechanical properties of fibre-cement composites with fibre contents 0.2; 0.3and 0.5% by weight of filler and binder were investigated. Reference sample without fibres was also produced. The aim of this work is to investigate the effects of cellulose fibres on the final properties (density, water absorbability, coefficient of thermal conductivity and compressive strength) of the fibrecement plasters after 28 days of hardening. Testing of plasters with varying amount of cellulose fibres (0.2, 0.3 and 0.5 wt. %) has shown that the resulting physical and mechanical properties depend on the amount, the nature and structure of the used fibres. Linear dependences of compressive strength and thermal conductivity on density for plasters with cellulosic fibres adding were observed.

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