Mechanical Behaviour and Thermal Conductivity of Mortars with Waste Plastic Particles

2011 ◽  
Vol 466 ◽  
pp. 115-120 ◽  
Author(s):  
Valeria Corinaldesi ◽  
Alida Mazzoli ◽  
Giacomo Moriconi
Keyword(s):  
Thermal Conductivity ◽  
Flexural Strength ◽  
Mechanical Behaviour ◽  
Rubber Particle ◽  
Limestone Powder ◽  
Unit Weight ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Thermal Insulating ◽  
Rubber Particles

In the present paper an investigation of mechanical behaviour and thermal conductivity of a lightweight building material containing either styrene butadiene rubber (SBR) or polyurethane (PU) waste particles is presented. Several mortar mixtures were prepared by replacing quartz sand with 0, 10 and 30% of either SBR or PU post-consumer plastics particles. The influence of rubber particle addition on fresh mortar behaviour, compressive and flexural strength of mortar as well as on mortar thermal conductivity was investigated. An optimization of mortar mixture proportions was carried out by adding a limestone powder as filler. The experimental investigation showed that the addition of rubber particles reduces both the material unit weight and the thermal conductivity. The thermal insulating effect of rubber particles indicates a promising potential for future developments. On the other hand, the addition of limestone powder produced higher thermal conductivity as well as higher compressive and flexural strength.

Thermal conductivity of styrene butadiene rubber compounds with natural rubber prophylactics waste as filler

1999 ◽  
Vol 35 (9) ◽  
pp. 1687-1693 ◽  
Author(s):  
N.S. Saxena ◽  
P. Pradeep ◽  
G. Mathew ◽  
S. Thomas ◽  
M. Gustafsson ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Natural Rubber ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Compounds ◽  
Styrene Butadiene

EFFECT OF POLYMER/CEMENT RATIO AND CURING REGIME ON POLYMER MODIFIED MORTAR PROPERTIES

2020 ◽  
Vol 15 (3) ◽  
pp. 177-193
Author(s):  
Daniel Hatungimana ◽  
Şemsi Yazıcı ◽  
Ali Mardani-Aghabaglou
Keyword(s):  
Flexural Strength ◽  
Ambient Temperature ◽  
Styrene Butadiene Rubber ◽  
Test Time ◽  
Void Content ◽  
Butadiene Rubber ◽  
The World ◽  
Water Curing ◽  
Curing Regime ◽  
Curing Regimes

ABSTRACT Cement is the most consumed building material in the world. However, cement manufacture is responsible for 5–7% of the world CO2 emissions. In this paper, cement was partially replaced by styrene-butadiene rubber (SBR) polymeric latex in order to reduce cement consumption. Besides, effects of SBR addition on the strength and physical properties of plain mortar exposed to three different curing regimes are presented. Three different curing regimes were applied to the 40 × 40 × 160 mm prismatic mortar specimens: (I): Specimens were cured in water until the test age (CW), (II): after demoulding, specimens were immersed in water for 2 days and kept in ambient temperature until the time of the test (2DWA) and (III) involved 2 days of water curing followed by 1 day in an oven at 50°C and subsequentely placing in ambient temperature until the test time (2W1OA). Results showed that combining 2 days of water curing followed by ambient temperature curing (2DWA) along with 3% SBR polymer content showed good performance in terms of compressive strength, water absorption and void content. Moreover, a good performance in terms of flexural strength was observed by combining 2W1OA curing regime with 2% SBR content. However, the detrimental effect of water curing regime (CW) in terms of compressive and flexural strength was also observed with the increase of SBR ratio.

Analysis of polymeric composite materials for frictional wear resistance purposes

2020 ◽  
pp. 096739112090395
Author(s):  
Badeea Majeed ◽  
Suleyman Basturk
Keyword(s):  
Thermal Conductivity ◽  
Wear Resistance ◽  
Impact Resistance ◽  
Polymeric Composite ◽  
Reinforcement Ratio ◽  
Steel Fibers ◽  
Basic Material ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Brake Pads

This research is about manufacturing brake pads from a polymeric composite material composed of domestic materials, which are cheaper and available in the market. An unsaturated polyester is used as the basic material. Styrene–butadiene rubber and montmorillonite clay materials available in the market are used as the fillers. The Kevlar fibers, the nylon, and the steel fibers are used as reinforcing materials to improve the mechanical properties. The Shore hardness, compressibility, thermal conductivity, impact, and wear resistance tests have been implemented. The results show that the hardness, compressive, and impact resistance of the samples increase with the increase of the reinforcement ratio by Kevlar fibers, nylon fibers, and steel fibers. The rate of wear decreases with the increase of reinforcement ratio. The thermal conductivity decreases with an increase in the reinforcement ratio by Kevlar fibers and nylon fibers while the thermal conductivity increases with an increase in the reinforcement ratio by Kevlar fibers and steel fibers. Compared to the commercial brake pads, high strength, high wear resistance, high impact resistance, high hardness, high compressive strength, low thermal conductivity, and low-cost brake pads have been proposed.

scholarly journals Increasing the thermal conductivity of styrene butadiene rubber: insights from molecular dynamics simulation

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 23394-23402 ◽  
Author(s):  
Xiuying Zhao ◽  
Bozhi Fu ◽  
Wenfeng Zhang ◽  
Haoxiang Li ◽  
Yonglai Lu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Dynamics Simulation ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Styrene Butadiene

It is very important to improve the thermal conductivity of styrene butadiene rubber (SBR) which can widen its application.

A Novel Method to Recycle Scrap Tires: High-Pressure High-Temperature Sintering

2002 ◽  
Vol 75 (5) ◽  
pp. 955-968 ◽  
Author(s):  
Jeremy E. Morin ◽  
Drew E. Williams ◽  
Richard J. Farris
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Temperature ◽  
Rubber Particle ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Scrap Tires ◽  
Vulcanized Rubber ◽  
High Pressure High Temperature ◽  
Styrene Butadiene

Abstract High-pressure high-temperature sintering (HPHTS) is a novel recycling technique that makes it possible to recycle vulcanized rubber powders made from waste rubber (namely scrap tires) through only the application of heat and pressure. A brief look into the mechanism of sintering will be presented along with information about the influence of molding variables, such as time, temperature, pressure and rubber particle size on the mechanical properties of the produced parts. One of the most interesting observations is that powders of every crosslinked elastomer attempted sintered together via this technique, including silicone rubber (SI), sulfur cured [natural rubber (NR), ethylene-propylene-diene rubber (EPDM), styrene-butadiene rubber (SBR)], peroxide cured butadiene rubber (BR), and fluoroelastomers (FKM). Early work on sintered rubber made from commercially available rubber powder had a modulus of 1 to 2 MPa, strength of 4 to 7 MPa and an elongation at break of 150–250%. Recently, in-house ground samples of SBR have had sintered values over 9.5 MPa strength and 275% elongation, or greater than 60% retention of the original properties. Many of these mechanical properties are comparable with industrially manufactured rubbers, and it is believed that recycled rubbers produced via HPHTS offer the potential to replace virgin rubber in numerous applications.

scholarly journals Improvement The Mechanical Properties of Styrene Butadiene Rubber By Using Silica Fume

2017 ◽  
Vol 2 (12) ◽  
pp. 31
Author(s):  
Ali Abed Salman
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Silica Fume ◽  
Polymeric Materials ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Materials Used ◽  
Styrene Butadiene

Styrene butadiene rubber (SBR) is considered to be one of the greatest important polymeric materials used as a bond, so we discussed in this study to improve its properties .This study covers the effect of silica fume on mechanical properties of styrene butadiene rubber reinforced with silica fume. The composites were prepared with (1 to 3 wt. %) of silica fume particles .The results had indicated  that the tensile strength and flexural strength are improved by (11.6% and 13.5%) respectively at 2 wt% and the hardness is  improved by (9.3%) at 3wt%.

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