Physical Properties of Rice Straw Composite Board Using Cementitious Materials

2020 ◽  
Author(s):  
Maria Crisella Dela Cruz
Keyword(s):  
Physical Properties ◽  
Rice Straw ◽  
Cementitious Materials ◽  
Composite Board ◽  
Straw Composite

Study on Technology of Manufacturing Veneer—Rice Straw Composite Board

2011 ◽  
Vol 239-242 ◽  
pp. 2407-2410
Author(s):  
Ya Zhe Jiang ◽  
Shi Cheng Zhang ◽  
Xing Zhen
Keyword(s):  
Rice Straw ◽  
Factors Affecting ◽  
Composite Board ◽  
Main Factors ◽  
Straw Composite

The main factors affecting the properties of veneer—rice straw composite board have been investigated, including the quality fraction ratio of SBR to PVA, spreading and the amount of PMDI. The results showed that: the ratio of SBR/PVA：80:20, spreading 15%, the amount of PMDI 20%( accounting for the weight of main agent). Using this adhesive the veneer—rice straw composite board could meet the requirement of GB/T 21723-2008.

scholarly journals Preparation and Performance of Wheat-straw Composite Board with Inorganic Adhesive

BioResources ◽  
2015 ◽  
Vol 11 (1) ◽  
Author(s):  
Jianzheng Qiao ◽  
Aijun Wang ◽  
Xingong Li
Keyword(s):  
Wheat Straw ◽  
Composite Board ◽  
And Performance ◽  
Straw Composite

scholarly journals Effect of Graphene Oxide Nanosheets on Physical Properties of Ultra-High-Performance Concrete with High Volume Supplementary Cementitious Materials

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1929 ◽  
Author(s):  
Yu-You Wu ◽  
Jing Zhang ◽  
Changjiang Liu ◽  
Zhoulian Zheng ◽  
Paul Lambert
Keyword(s):  
Graphene Oxide ◽  
Physical Properties ◽  
High Performance ◽  
High Performance Concrete ◽  
High Volume ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Ultra High Performance Concrete ◽  
Steam Curing ◽  
Slump Flow

Nanomaterials have been increasingly employed for improving the mechanical properties and durability of ultra-high-performance concrete (UHPC) with high volume supplementary cementitious materials (SCMs). Recently, graphene oxide (GO) nanosheets have appeared as one of the most promising nanomaterials for enhancing the properties of cementitious composites. To date, a majority of studies have concentrated on cement pastes and mortars with fewer investigations on normal concrete, ultra-high strength concrete, and ultra-high-performance cement-based composites with a high volume of cement content. The studies of UHPC with high volume SCMs have not yet been widely investigated. This paper presents an experimental investigation into the mini slump flow and physical properties of such a UHPC containing GO nanosheets at additions from 0.00 to 0.05% by weight of cement and a water–cement ratio of 0.16. The study demonstrates that the mini slump flow gradually decreases with increasing GO nanosheet content. The results also confirm that the optimal content of GO nanosheets under standard curing and under steam curing is 0.02% and 0.04%, respectively, and the corresponding compressive and flexural strengths are significantly improved, establishing a fundamental step toward developing a cost-effective and environmentally friendly UHPC for more sustainable infrastructure.

scholarly journals Curing characteristics tensile and physical properties of rice straw filled standard Malaysian rubber

2017 ◽  
Vol 908 ◽  
pp. 012071
Author(s):  
A Alnaid ◽  
N Z Noriman ◽  
O S Dahham ◽  
R Hamzah ◽  
T Adam ◽  
...  
Keyword(s):  
Physical Properties ◽  
Rice Straw ◽  
Curing Characteristics

scholarly journals Physical Properties of Biocontainers Used to Grow Long-term Greenhouse Crops in an Ebb-and-flood Irrigation System

HortScience ◽  
2013 ◽  
Vol 48 (6) ◽  
pp. 732-737 ◽  
Author(s):  
Stephanie A. Beeks ◽  
Michael R. Evans
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Rice Straw ◽  
Wood Fiber ◽  
Fungal Growth ◽  
Dairy Manure ◽  
Similar Amount ◽  
Coconut Fiber ◽  
Irrigation Interval ◽  
Plastic Containers

The physical properties of new 15.2-cm plastic and comparably sized bioplastic, solid ricehull, slotted ricehull, paper, peat, dairy manure, wood fiber, rice straw, and coconut fiber containers were determined. Additionally, the physical properties of these containers were determined after being used to grow ‘Rainier Purple’ cyclamen (Cyclamen persicum L.) in ebb-and-flood benches for 15 weeks in a greenhouse environment. The punch strength of new coconut fiber containers was the highest of the containers. The used plastic containers had strengths of 228.0, 230.5, and 215.2 N for the bottom, middle, and top zones, respectively. The used peat, dairy manure, and wood fiber containers had strengths of less than 15 N for each zone. Tensile strength of all new containers was 10 kg. The plastic, bioplastic, solid ricehull, slotted ricehull, paper, and coconut fiber containers had used strengths that were similar to plastic containers. Total water used for wood fiber containers was higher than plastic containers. Irrigation intervals for plastic containers were similar to bioplastic, solid ricehull, slotted ricehull, paper, and coconut fiber containers. The irrigation interval for plastic containers was 1.32 days and the wood fiber container had the shortest irrigation interval at 0.61 day. Container absorption for coconut fiber containers was 255 mL and was higher than plastic containers. Wood fiber container absorption was 141 mL and lower than plastic containers. Plastic, bioplastic, solid ricehull, and slotted ricehull containers had no visible algal or fungal growth. The wood fiber containers had 79% of the container walls covered with algae or fungi and the bottom and middle zones had 100% algae or fungi coverage. The bottom zone of rice straw, dairy manure, and peat containers also had 100% algae or fungi coverage. The bioplastic, solid ricehull, and slotted ricehull containers in this study proved to be good substitutes for plastic containers. These containers retained high levels of punch and tensile strength, had no algal and fungal growth, and required a similar amount of solution as the plastic containers to grow a cyclamen crop. The peat, dairy manure, wood fiber, and rice straw containers proved not to be appropriate substitutes for plastic containers because of the low used strengths, high percentage of algal and fungal coverage, and shorter irrigation intervals as compared with plastic containers.

scholarly journals Prediction of the Elastic Properties of the Clay-Rice Straw Composite by Numerical Homogenization Technique using Digimat

2019 ◽  
Vol 8 (4) ◽  
pp. 9906-9910
Keyword(s):  
Rice Straw ◽  
Elastic Properties ◽  
Volume Fraction ◽  
Numerical Approach ◽  
Reinforced Composites ◽  
Numerical Homogenization ◽  
Composite Microstructure ◽  
Homogenization Scheme ◽  
3D Composite ◽  
Straw Composite

This paper deals with numerical modelling of the elastic properties of the rice straw-clay composite. This composite material is currently attracting interest because of its low impact on the environment but also for economic reasons. Benefiting from the advantages of a promising building material, straw reinforced composites attract more attention. This work allowed to model the effect of the straw inclusions on the elastic properties of the composite by a numerical approach considering the aspect ratio, the volume fraction, the orientation and the distribution of the straw inclusions. The Mori-Tanaka homogenization scheme for the RVEs is done using Digimat-MF software and the 3D composite microstructure models are generated by the Digimat-FE software. This made it possible to calculate the effective elastic properties of the clay-rice straw composites by numerical simulation. An empirical linear correlation between the volume fraction of the inclusions and the Young's modulus has been proposed. The results obtained can help to better control the formulation of the composite in developing countries.

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