OPTIMUM PERFORMANCE OF STABILIZED EDE LATERITE AS AN ALTERNATIVE CONSTRUCTION MATERIAL

Laterite samples from Ede area with particle components of 19.7% clay, 32.8% silt and 47.5% sand was stabilized with combined cement, lime and bitumen and test for Compressive strength, Linear Shrinkage, Permeability and Water Absorption. The stabilizers were mixed with laterite soil in different ratios and percentage. The laterite carried 90% which is constant while the three stabilizers shared the remaining 10% in varying form. After 28 days of curing, laterite stabilizer with 90% of laterite, 8% of cement, 1% lime and 1% bitumen (LCLB1) possessed compressive strength of 2.01N/mm2. It Water Absorption Capacity was 3.05%. LCLB4 stabilizer (90% laterite, 6% cement, 2% lime and 2% bitumen) has the same compressive strength with LCLB1 stabilizer but with a high Water Absorption Capacity of 4.2%. The stabilizer of 90% laterite, 3.33% cement, 3.33% lime and 3.33% of bitumen (LCLB8) has the lowest compressive strength of 0.74N/mm2 and the highest Water Absorption Capacity of 5.39%. The results shows that LCLB1 stabilizer is a better stabilizer for strength and blocks made from laterite stabilized with it stand a good alternative to sand Crete blocks in building constructions. The combination of these stabilizers in order to determine a most economical volume combination for optimum performance is highly possible and economical.

Download Full-text

Villus-like nanocomposite hydrogels with a super-high water absorption capacity

Journal of Materials Chemistry A ◽

10.1039/d0ta03907a ◽

2020 ◽

Vol 8 (25) ◽

pp. 12613-12622

Author(s):

Xiaosai Hu ◽

Qiao Wang ◽

Qing Liu ◽

Zongjin Li ◽

Guoxing Sun

Keyword(s):

Water Absorption ◽

High Water ◽

Absorption Capacity ◽

Water Absorption Capacity ◽

Nanocomposite Hydrogels ◽

High Water Absorption

Villi-like structure greatly improved the water absorption capability of super water absorbing hydrogels (SAH).

Download Full-text

GENOTYPE RECOGNITION IN PEAS BY WATER IMBIBITION OF SEEDS

Canadian Journal of Plant Science ◽

10.4141/cjps66-091 ◽

1966 ◽

Vol 46 (5) ◽

pp. 545-551 ◽

Cited By ~ 1

Author(s):

H. H. Marshall

Keyword(s):

Water Absorption ◽

Seed Weight ◽

Sugar Content ◽

High Water ◽

Absorption Capacity ◽

Water Absorption Capacity ◽

Water Imbibition ◽

High Water Absorption ◽

Immature Seeds ◽

Pea Seeds

Significant differences in the water absorption capacity of mature pea seeds were found between lines or varieties within and between each of four genetically different seed types, round, wrinkled, "new" wrinkled, and "double" wrinkled. The differences in water absorption were positively correlated with sugar content of immature peas. They were also negatively correlated with seed weight in lines with the genes for new wrinkled.Peas with both classical (rr) and the genes for new wrinkled have high water absorption indices and small seeds. Immature seeds contain from 14.6 to 17.0% sugar or about 1% more than classical wrinkled varieties.

Download Full-text

4-(6-Aminohexyl) amino-4-oxo-2-butenoic acid as a novel hydrophilic monomer for synthesis of cellulose-based superabsorbents with high water absorption capacity

Carbohydrate Polymers ◽

10.1016/j.carbpol.2020.116959 ◽

2020 ◽

Vol 250 ◽

pp. 116959

Author(s):

Negar Etminani-Isfahani ◽

Zahra Mohammadbagheri ◽

Abbas Rahmati

Keyword(s):

Water Absorption ◽

High Water ◽

Absorption Capacity ◽

Water Absorption Capacity ◽

High Water Absorption ◽

Butenoic Acid ◽

Hydrophilic Monomer

Download Full-text

Cellulose Nanofibrils/Xyloglucan Bio-Based Aerogels with Shape Recovery

Gels ◽

10.3390/gels7010005 ◽

2021 ◽

Vol 7 (1) ◽

pp. 5

Author(s):

Samuel Mandin ◽

Samuel Moreau ◽

Malika Talantikite ◽

Bruno Novalès ◽

Jean-Eudes Maigret ◽

...

Keyword(s):

Water Absorption ◽

Shape Recovery ◽

Cellulose Nanofibrils ◽

High Water ◽

Absorption Capacity ◽

Absorption Properties ◽

High Affinity ◽

High Water Absorption ◽

Freezing Procedure ◽

The Impact

Bio-based aerogels containing cellulose nanofibrils (CNFs) are promising materials due to the inherent physical properties of CNF. The high affinity of cellulose to plant hemicelluloses (xyloglucan, xylan, pectin) is also an opportunity to develop biomaterials with new properties. Here, we prepared aerogels from gelled dispersions of CNFs and xyloglucan (XG) at different ratios by using a freeze-casting procedure in unidirectional (UD) and non-directional (ND) manners. As showed by rheology analysis, CNF and CNF/XG dispersions behave as true gels. We investigated the impact of the freezing procedure and the gel’s composition on the microstructure and the water absorption properties. The introduction of XG greatly affects the microstructure of the aerogel from lamellar to cellular morphology. Bio-based aerogels showed high water absorption capacity with shape recovery after compression. The relation between morphology and aerogel compositions is discussed.

Download Full-text

Comparison of Bio and Eco-technologies with Chemical Methods for Pre-treatment of Flax Fibers: Impact on Fiber Properties

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501400900407 ◽

2014 ◽

Vol 9 (4) ◽

pp. 155892501400900 ◽

Cited By ~ 2

Author(s):

Sabela Camano ◽

Nemeshwaree Behary ◽

Philippe Vroman ◽

Christine Campagne

Keyword(s):

Water Absorption ◽

Fiber Bundle ◽

Glass Fibers ◽

Fiber Surface ◽

Pectate Lyase ◽

High Water ◽

Absorption Capacity ◽

Water Absorption Capacity ◽

Flax Fibers ◽

The Impact

Flax fibers, available as fiber bundles, are commonly used as fiber reinforcement in composite materials as a substitute for glass fibers. Pre-treatments are often necessary for improving fiber-resin adhesion, and also to facilitate fiber elementarization, and to improve fiber ability to be implemented in mechanical processes limiting fiber damages. This paper focuses on the impact of biotechnologies (effect of 2 different enzymes: a pectate lyase and a laccase) and of an ecotechnology (ultrasound with ethanol), compared to classical chemical pre-treatments (using aqueous NaOH and ammonia) on the final flax fiber bundle properties, before and after a carding process. Fiber surface properties (wettability and/or zeta potential values), fiber elementarization and mechanical properties vary with the type of treatment (chemical nature of product and conditions used). Fibers elementarised using pectate lyase and ultrasound/ethanol have a hydrophilic surface and a high water absorption capacity, and are also of highest quality in terms of increased fineness. Treatment with NaOH yields the poorest fiber bundle tenacity. Laccase enzyme yields long thick hydrophobic fibers having very low water absorption capacity, and the most neutral surface charge. Properties of flax fibers can be easily monitored using different pre-treatments resulting in fibers which would be suited for various final applications.

Download Full-text

Study of the Impact of Rice Straw Particle Size on the Mechanical and Thermal Properties of Straw Lime Concretes

10.4028/www.scientific.net/cta.1.361 ◽

2022 ◽

Author(s):

Youssef El Moussi ◽

Laurent Clerc ◽

Jean-Charles Benezet

Keyword(s):

Thermal Conductivity ◽

Particle Size ◽

Compressive Strength ◽

Thermal Properties ◽

Water Absorption ◽

Rice Straw ◽

Absorption Capacity ◽

Mechanical And Thermal Properties ◽

Water Absorption Capacity ◽

The Impact

The use of bio-based concretes performed with lignocellulosic aggregates constitute an interesting solution for reducing the energy consumption, greenhouse gas emissions and CO2 generated by the building sector. Indeed, bio-based materials could be used as an alternative of traditional materials such as expended polystyrene and mineral resources (e.g. glass and rock wools) for insulation. Furthermore, these bio-based concretes are known for their interesting insulation properties, indeed they allow to enhance thermal properties of buildings and enables moisture management which lead to design efficient building materials. For this purpose, bio-based concrete using rice straw as aggregate are studied in this present work. The impact of the characteristics of rice straw particle (particle size distribution, bulk density, and water absorption capacity, etc.) on both the mechanical and thermal properties of the bio-based concrete are investigated. Five formulations of rice straw concrete are examined, compared and then classified in terms of insulation properties and mechanical properties. The assessments are based on the measurement of density and thermal conductivity. The variation of compressive strength in function of the characteristics (mean particle length) of rice straw particle are assessed and discussed. The investigation covers also the porosity and density. Tests are also carried out on agricultural by-products with a view to highlight their chemical, physical and structural proprieties. The results show that the use of large particles with low water absorption capacity induce lighter concretes with the density between 339 and 505 kg/m3 and lead to a high compressive strength with a high mechanical deformability. Furthermore, it appears that an increase in the average length of rice straw particle lead to decrease of thermal conductivity of bio-based concretes. It varies from 0.062 to 0.085 W/(m.K).

Download Full-text

Estimation of Water Absorption Capacity of Hardened Concrete with Recycled Aggregate Based on Experimental Determination

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.732.411 ◽

2015 ◽

Vol 732 ◽

pp. 411-414 ◽

Cited By ~ 2

Author(s):

Tereza Pavlů ◽

Magdaléna Šefflová

Keyword(s):

Water Absorption ◽

Negative Impact ◽

High Water ◽

Absorption Capacity ◽

Recycled Concrete ◽

Construction And Demolition Waste ◽

Recycled Aggregate ◽

Hardened Concrete ◽

Water Absorption Capacity ◽

Demolition Waste

Recycled construction and demolition waste, especially recycled concrete, is able to use as an aggregate for concrete. The high water absorption capacity (WA) of recycled aggregate has a negative impact of concrete mix workability and influences the water-cement ratio. This paper presents results of experimental measurement of WA of recycled aggregate and recycled concrete. Series of concrete samples with various replacement ratios of natural aggregate and recycled aggregate were prepared for this study. The main aim of this study is to analyze the influence of recycled aggregate WA, and mixture ratios on the WA of hardened concrete (HC). Regression model to estimate the WA of hardened concrete is presented.

Download Full-text

Effects of Adding Silica Fume and Empty Fruit Bunch to the Mix of Cement Brick

Indonesian Journal of Computing, Engineering and Design (IJoCED) ◽

10.35806/ijoced.v3i1.141 ◽

2021 ◽

Vol 3 (1) ◽

pp. 19-30

Author(s):

Jen Ling ◽

Yong Lim ◽

Wen Leong ◽

How Sia

Keyword(s):

Compressive Strength ◽

Water Absorption ◽

Silica Fume ◽

Palm Oil ◽

Absorption Capacity ◽

Water Absorption Capacity ◽

Empty Fruit Bunch ◽

Absorption Properties ◽

Proper Disposal ◽

By Products

Silica fume (SF) and palm oil empty fruit bunch (EFB) are the by-products of the ferroalloy smelting industry and oil palm plantation, which require proper disposal to minimize the environmental impacts. To consume the by-products, the feasibility of utilizing SF and EFB to fabricate bricks was studied. Limited studies were adopting EFB as the natural fibres in bricks and its pro-portion barely exceeded 5%. With the enhancement of SF, EFB content in the mix could be increased. In this study, 336 specimens were produced in the cement-to-sand (c/s) ratios of 1:2.5 and 1:3, where SF replaced 10% to 15% cement in the mix by weight while EFB substituted 20% to 25% sand by volume. The specimens were tested for the compressive strength, density, and water absorption properties. SF was found to strengthen the mix, while EFB reduced the compressive strength and increased the water absorption capacity of the brick. Based on the evaluation results, the mix containing less than 10% SF and 20% EFB content was applicable for non-load-bearing brick.

Download Full-text

Influence of the composition of composite mixtures with a reduced gluten content on the rheological properties of the dough based on their basis

New Technologies ◽

10.47370/2072-0920-2020-15-4-74-83 ◽

2020 ◽

pp. 74-83

Author(s):

Ju. V. Ushakova ◽

E. M. Paskova ◽

G. E. Rysmukhambetova ◽

T. B. Kulevatova

Keyword(s):

Rheological Properties ◽

Lower Cost ◽

Rice Flour ◽

High Water ◽

Absorption Capacity ◽

Water Absorption Capacity ◽

Gluten Free ◽

Corn Flour ◽

High Water Absorption ◽

Cumulative Curves

The article presents experimental data on the assessment of the rheological properties of dough from new types of flour, formed on the basis of cumulative curves using the Mixolab device. The data of mixolabograms and radial diagrams (Mixolab profiler) made it possible to reveal the existing differences in the parameters of the rheological profile and Mixolab indices. The object of the study is composite mixtures of gluten-free flours: No. 1 is 50% of pumpkin and 50% of corn flour, No. 2 is 50% of linseed and 50% of corn flour, No. 3 – 50% of rice and 50% of corn flour, No. 4 – 75% of linseed and 25% of corn flour, No. 5 is 30% of linseed and 70% of rice flour. The use of composite mixtures is promising due to high oven rise and low starch thickening because of its high water absorption capacity (WAC). In addition, there is certain economic efficiency, since it is possible to produce more dough at a lower cost.

Download Full-text