scholarly journals Effect of Borosilicate Glass Wastes and Synthetic Silica on Cement Products Properties

2021 ◽  
Vol 15 (2) ◽  
pp. 312-318
Author(s):  
Galyna Kotsay ◽  
◽  
Aleksandra Brzóska ◽  
Keyword(s):  
Compressive Strength ◽  
Borosilicate Glass ◽  
Research Study ◽  
Soda Lime ◽  
Pozzolanic Activity ◽  
Soda Lime Glass ◽  
Test Results ◽  
Complex Additive ◽  
Cement Mortars ◽  
Glass Wastes

This paper presents the findings of research study on the effect of borosilicate glass wastes on properties of cement paste and mortar. The borosilicate glass contains three times less alkali than soda-lime glass and about 12 % of boron oxide, so pozzolanic activity of borosilicate glass is three times higher compared to soda-lime glass. In order to increase the pozzolanic activity of glass precipitated synthetic silica was used. Mathematical models were used in order to test the effect of synthetic silica on pozzolanic activity of borosilicate glass. Test results indicate that replacement of 1 % of borosilicate glass by synthetic silica increased the pozzolanic activity up to 9.4 mg CaO/g of additive. By adding 5 % of borosilicate glass instead of cement, the standard compressive strength is reduced by about 20 %. However, complex additive of borosilicate glass (2–5 %) and synthetic silica (0.5 %) increased initial compressive strength of cement mortars to 10 %.

scholarly journals Static Hardness Testing of Cement Mortars Containing Different Types of Recycled Construction Waste Powders

Solids ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 331-340
Author(s):  
Zoltán Gyurkó ◽  
Rita Nemes
Keyword(s):  
Compressive Strength ◽  
Indentation Test ◽  
Hardness Test ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Test Results ◽  
Depth Sensing ◽  
Static Hardness ◽  
Cement Mortars ◽  
Aerated Concrete

The present paper deals with the hardness of cement mortars prepared with recycled materials that are potential supplementary cementitious materials (SCM). Two potential SCMs (aerated concrete powder (ACP) and concrete powder) were investigated and compared with a reference (neat cement) sample and a sample containing metakaolin (MK). The long-term performance of the mortars was studied up to the age of one year. Based on the compressive strength tests at different ages, neither concrete powder nor ACP significantly decreases the compressive strength at a 10% substitution ratio. The samples were studied with two types of static hardness tests: the Brinell hardness test and the depth sensing indentation test at two different load levels. The hardness test results indicated that the standard deviation of the results is lower at a higher load level. In the case of metakaolin and concrete powder, the change in the compressive strength was observable in the hardness test results. However, in case of the ACP, the compressive strength decreased, while the hardness increased, which can be traced back to the filler effect of aerated concrete powder. Finally, using the DSI test, the hardness results were analyzed on an energy basis. The analysis highlighted that the change in the hardness is connected to the elastic indentation energy, while it is independent from the dissipated (plastic) indentation energy.

Experimental Investigation the Effect of Cleaning on the Optical and Mechanical Properties of PV Module Glasses

2020 ◽  
Vol 990 ◽  
pp. 291-295
Author(s):  
Nardia Zubir ◽  
Md. Hasanuzzaman ◽  
Nasrudin Abd Rahim
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Borosilicate Glass ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Glass Cover ◽  
Pv Module ◽  
Optical And Mechanical Properties ◽  
Glass Cleaning

Poor transmission of sunlight through the top glass cover is one of the major hindrances in realizing better performance from a PV module. Adoption of appropriate cleaning technique might enhance glass transmissivity to a good extent. In the present study, the effect of manual cleaning with nylon sponge, microfiber cloth and nylon brush on optical and mechanical properties of PV glass have been investigated for several samples of borosilicate and soda lime glasses. Examination of transmittance of the samples using UV-VIS NIR scanning spectrophotometer confirmed enhanced transmissivity. Borosilicate glass exhibited better performance in terms of transmissivity as compared to soda lime glass. Cleaning with nylon sponge shows the highest transmittance of 91.98% for borosilicate glass at 630 nm wavelength and that of 91.094% with soda lime at 525 nm wavelength.

Microscratch Analysis of The Adhesion Failure on Oxide Thin Films With Different Thickness

1996 ◽  
Vol 436 ◽  
Author(s):  
C. R. Ottermann ◽  
K. Bange ◽  
A. Braband ◽  
H. Haefke ◽  
W. Gutmannsbauer
Keyword(s):  
Thin Films ◽  
Chemical Vapour ◽  
Soda Lime ◽  
Fused Silica ◽  
Soda Lime Glass ◽  
Test Results ◽  
Glass Substrates ◽  
Adhesion Failure ◽  
Different Thickness ◽  
Deposition Techniques

AbstractAdhesion failures of Ti2 and Ta2O5 thin films deposited by reactive evaporation (RE), reactive ion plating (IP) and plasma impulse chemical vapour deposition (PICVD) on fused silica, AF 45, TEMPAX and soda-lime glass substrates are investigated by means of a micro-scratch tester. The oxide films possess thickness between 60 and 500 nm and show different mass densities depending on the deposition conditions. Scratch testing exhibits well pronounced detachment for thicker films on hard substrates. The clearance of the scratch signal is reduced with decreasing layer thickness or for softer substrate materials. The test results are also influenced by the various substrates and different chemical and mechanical properties of the films due to the alternate deposition techniques.

Effect of Corrosion Inhibitor on the Compressive Strength of Polymer-Modified Cement Mortars

2014 ◽  
Vol 692 ◽  
pp. 482-485
Author(s):  
Jae Eun Jeong ◽  
Keun Hyeok Yang ◽  
In Gu Yun
Keyword(s):  
Compressive Strength ◽  
Corrosion Inhibitor ◽  
Cement Mortar ◽  
Strength Development ◽  
Test Results ◽  
Initial Flow ◽  
Cement Mortars ◽  
Compressive Strength Development

This study examined initial flow and compressive strength development of polymer-modified cement mortar according to the addition of corrosion inhibitor. Test results showed that with the increase of the amount of corrosion inhibitor, the initial flow of mortars increased whereas compressive strength decreased. The strength development of mortar specimens could be reasonably predicted using the modified ACI 209 equations.

Effects of Waste Soda-Lime Glass Sand and Glass Fiber on Physical and Mechanical Properties of None-Autoclaved Aerated Concrete

2021 ◽  
Vol 1023 ◽  
pp. 141-146
Author(s):  
Inzhu Mukangali ◽  
Chang Seon Shon ◽  
Kirill Kryzhanovskiy ◽  
Di Chuan Zhang ◽  
Jong Ryeol Kim
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Physical And Mechanical Properties ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Test Results ◽  
Autoclaved Aerated Concrete ◽  
Glass Sand ◽  
Aerated Concrete ◽  
Compressive And Flexural Strengths

This paper investigates the combined effect of waste soda-lime glass sand and glass fiber on the physical and mechanical properties of none-autoclaved aerated concrete (NAAC). The use of both soda-lime glass sand and glass fiber can provide silica-rich materials in the aerated concrete and can enable the elimination of an autoclaved curing by enhancing the physical and mechanical properties in aerated concrete. In this study, a total of six mixture proportions were designed to evaluate these properties in NAAC. The mixture parameters included the partial substitutions of normal sand with soda-lime glass sand (0%, 15%, and 30%) and glass fiber (1%, 2%, and 3%). A series of tests were conducted to determine density, absorption, porosity, and both compressive and flexural strengths of the NAAC. Test results present that the increase of glass sand content leads to the increasing of both compressive and flexural strengths. Moreover, the combination of the use of glass sand with glass fiber also increases the strength up to 2 times (the mixture of 30% glass sand and 3% glass fiber). Furthermore, test results indicate the relatively good relationship between the density, porosity, and of NAAC with good accuracy.

Post-Deposition Sulfur Incorporation into CuInSe2 Thin Films

2001 ◽  
Vol 668 ◽  
Author(s):  
Jochen Titus ◽  
Hans-Werner Schock ◽  
Robert W. Birkmire ◽  
William N. Shafarman ◽  
Udai P. Singh
Keyword(s):  
Thin Films ◽  
Borosilicate Glass ◽  
Phenomenological Model ◽  
Film Surface ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Film Composition ◽  
Initial Film ◽  
Surface Phases ◽  
Post Deposition

ABSTRACTThe effect of initial film composition and substrate in the sulfurization of CuInSe2 was investigated. CuInSe2 films deposited on either soda-lime glass (SL) or Corning 7059® borosilicate glass (7059) substrates were reacted in flowing H2S for times from 1 to 8 hours. Films with Cu-rich composition, Cu/In > 1, reacted for 1 hour had nearly all the Se replaced by S. For Cu-poor films the incorporation of S was significantly reduced. In addition, in Cu-poor films on SL glass CuInS2 and NaInS2 were found at the film surface. These phases were not detected in films on 7059 substrates or in Cu-rich films. A phenomenological model is proposed to explain the formation of segregated surface phases in Cu-poor films on SL substrates.

scholarly journals Effect of Borosilicate Glass on Thermal Neutron Shielding Performance and Compressive Strength of Cement Mortar

2019 ◽  
Vol 9 (4) ◽  
pp. 763
Author(s):  
Jun-Cheol Lee ◽  
Hyeong-Gil Choi
Keyword(s):  
Compressive Strength ◽  
Thermal Neutron ◽  
Borosilicate Glass ◽  
Boron Content ◽  
Cement Mortar ◽  
Pozzolanic Reaction ◽  
Fine Aggregate ◽  
Replacement Ratio ◽  
Neutron Shielding ◽  
Cement Mortars

The effect of borosilicate glass on the thermal neutron shielding performance and the compressive strength of cement mortar was investigated. The borosilicate glass was used as a replacement material for fine aggregate in this study. The cement mortars were mixed by four different replacement ratios of borosilicate glass. The following tests were conducted with the cement mortar: (1) Compressive strength, (2) TG/DSC and (3) neutron shielding rate using 241Am–Be neutron source. Results indicated that the cement mortar with borosilicate glass showed higher compressive strength and higher thermal neutron shielding rate as the replacement ratio of borosilicate glass increased. The increase of the compressive strength and the thermal neutron shielding rate was associated with the pozzolanic reaction of borosilicate glass and the increase of boron content in cement mortar, respectively.

scholarly journals Analysis of Potential-Induced Degradation in Soda-Lime Glass and Borosilicate-Glass Cu(In,Ga)Se2 Samples

2019 ◽  
Vol 9 (1) ◽  
pp. 331-338 ◽  
Author(s):  
M. Carmen Alonso-Garcia ◽  
Peter Hacke ◽  
Stephen Glynn ◽  
Christopher P. Muzzillo ◽  
Lorelle M. Mansfield
Keyword(s):  
Borosilicate Glass ◽  
Soda Lime ◽  
Soda Lime Glass

scholarly journals Effect of Glass on pH-Dependent Stability of Typhoid Vaccine

1975 ◽  
Vol 2 (2) ◽  
pp. 85-88
Author(s):  
Robert J. Driesens
Keyword(s):  
United States ◽  
Borosilicate Glass ◽  
Soda Lime ◽  
United States Pharmacopeia ◽  
Ph Stability ◽  
Soda Lime Glass ◽  
Typhoid Vaccine ◽  
Ph Dependent ◽  
Saline Solutions ◽  
States Pharmacopeia

Vaccines made from the Ty-2 strain of Salmonella typhosa were tested periodically for stability of pH and of potency. The acetone-treated cultures prepared in buffered saline solutions retained potency beyond 30 months of storage at 0 to 5 C. Similar vaccines in unbuffered saline solutions lost potency coincident with increase of alkalinity. Vaccines packaged in United States Pharmacopeia borosilicate glass vials retained potency and pH stability, whereas those in Type III United States Pharmacopeia soda-lime glass vials were less stable.

scholarly journals Utilization of Waste Glass Powder in Cement Mortar

2021 ◽  
Vol 9 (1) ◽  
pp. 25
Author(s):  
Džigita Nagrockienė ◽  
Kęstutis Barkauskas
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Glass Powder ◽  
Physical And Mechanical Properties ◽  
Cement Industry ◽  
Waste Glass ◽  
Regression Equations ◽  
Test Results ◽  
Waste Glass Powder ◽  
Cement Mortars

Every year, millions of tons of waste glass are generated all over the world and disposed in landfills. Utilization of this waste by substituting a certain share of cement in cement mortars can contribute to the reduction of environmental pollution in two aspects: the utilization of waste and the reduction of the cement content in cement-based mortars. The cement industry is responsible for approximately 6% of global CO2 emissions. Seven different mortar mixes, containing between 0% and 30% of waste glass powder added by weight of cement, were analyzed. The following physical and mechanical properties of the mortar mixes were measured: compressive strength, flexural strength, and density. The test results revealed that waste glass powder can be used in small amounts in cement-based mortars to reduce the amount of cement and to utilize waste glass. A higher performance, modified cement-based mortar can be produced for civil engineering applications by replacing 5% with waste glass powder. The linear regression equations obtained illustrate the relationships between the density and compressive strength, and between density and flexural strength at 28 days.

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