Ceramic tiles based on central Tunisian clays (Sidi Khalif formation)

Clay Minerals ◽  
2012 ◽  
Vol 47 (2) ◽  
pp. 165-175 ◽  
Author(s):  
M. Medhioub ◽  
W. Hajjaji ◽  
M. Hachani ◽  
A. Lopez-Galindo ◽  
F. Rocha ◽  
...  
Keyword(s):  
Water Absorption ◽  
Clay Minerals ◽  
Lower Cretaceous ◽  
Bending Strength ◽  
High Water ◽  
Linear Shrinkage ◽  
Mechanical Resistance ◽  
Ceramic Tiles ◽  
The North ◽  
High Water Absorption

AbstractThis study aims to find alternatives to some overexploited deposits in the north of Tunisia. The clays of the Sidi Khalif formation, of Uppermost Jurassic to Lower Cretaceous age, seem suitable to support this strategy, due to their abundance. In terms of mineralogy, they can be divided into two distinct groups, related to their palaeogeographic and eustatic contexts. The clays of the Sidi Khalif formation from Jebel Houareb (JH) and Jebel Meloussi (JM) are richer in clay minerals, while those of Jebel Rhouis (JR) and Jebel Boudinar (JB) zones are dolomite-rich. The compositional differences between the two groups influenced their technological behaviour in production of ceramic tiles. Upon firing, forsterite and gehlenite crystallized in the carbonate-rich JR and JB clays, whereas mullite formed in the JH and JM clays. Concerning their ceramic properties, the tiles made from JR or JB clays showed low bending strength and high water absorption. For JH and JM, the tiles had slightly greater mechanical resistance, but exhibited considerable linear shrinkage. These defects were partially corrected by introducing new formulations based on the same clays and by altering the firing cycles (HM1, HM2, RB1 and RB2). With these modifications, “Porcelanico” and “Monoporosa” technologically conforming tiles were obtained from HM2 and RB2 formulations, respectively.

scholarly journals OPTIMUM PERFORMANCE OF STABILIZED EDE LATERITE AS AN ALTERNATIVE CONSTRUCTION MATERIAL

2020 ◽  
Vol 3 (8) ◽  
pp. 1-8
Author(s):  
Adegbenle Bukunmi O
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Construction Material ◽  
High Water ◽  
Good Alternative ◽  
Linear Shrinkage ◽  
Absorption Capacity ◽  
Water Absorption Capacity ◽  
Optimum Performance ◽  
High Water Absorption

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.

Effects of Processing Condition on the Properties of Porcelain Building Ceramic Tiles

2015 ◽  
Vol 655 ◽  
pp. 253-257 ◽  
Author(s):  
Wei Xia Dong ◽  
Jian Er Zhou ◽  
Xing Yong Gu ◽  
Qi Fu Bao ◽  
Kun Liu ◽  
...  
Keyword(s):  
Water Absorption ◽  
Bending Strength ◽  
Processing Condition ◽  
Linear Shrinkage ◽  
Raw Material ◽  
Firing Process ◽  
Sintering Behavior ◽  
Building Ceramic ◽  
Ceramic Tiles ◽  
Rare Earth Tailings

Due to low water absorption, high bending strength and abrasion resistance, and excellent chemical and frost resistance, porcelain building ceramic tiles are the highest increase in production and sales over all other kind of building ceramic tiles materials. In this paper, porcelain building ceramic tiles was prepared by a fast firing process of rare earth tailings as the main raw material, low fused sand and Zhuji porcelain sand et al mixture. Effects of firing temperature and forming pressure on the sintering behavior and mechanical property of porcelain building ceramic tiles were studied. The sintering behavior of the fired samples was evaluated by linear shrinkage and water absorption. The fired samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and bending strength measurements. The sample is pressured at 15 MPa and sintered at 1180 °C and endowed with 0.04% of the water absorption and 51 MPa of the bending strength, due to denser microstructure. The obtained results would contribute to save natural resources and protect environment.

The Use of Granite and Kaolin Residues as Raw Materials to Obtain Ceramic Tile

2006 ◽  
Vol 530-531 ◽  
pp. 432-437
Author(s):  
M.A.F. Ramalho ◽  
R.R. Almeida ◽  
Lisiane Navarro de Lima Santana ◽  
Hélio Lucena Lira ◽  
H.C. Ferreira ◽  
...  
Keyword(s):  
Water Absorption ◽  
Apparent Density ◽  
Ceramic Tile ◽  
Raw Materials ◽  
Industrial Process ◽  
Linear Shrinkage ◽  
Mechanical Tests ◽  
Mechanical Resistance ◽  
Ceramic Tiles ◽  
Roof Tile

Recycling of residues from different industrial process as new raw materials has been studied by several institutions to be applied in the production of ceramic bricks, roof tile. The aim of this work is to study the potentiality of the residues from granite and kaolin industries as raw materials to obtain ceramic tile. The raw materials were fired at temperatures of 1100oC, 1120oC and 1150oC. After fired the specimens were submitted to a physical and mechanical tests, such as, linear shrinkage, mechanical resistance, water absorption and apparent density. The results show that the residues can be used in the composition of the paste to produce ceramic tiles.

scholarly journals Cellulose Nanofibrils/Xyloglucan Bio-Based Aerogels with Shape Recovery

Gels ◽  
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.

Microstructural Analysis of Petroleum Waste Containing Ceramic Tile

2008 ◽  
Vol 591-593 ◽  
pp. 845-848 ◽  
Author(s):  
Bruno C.A. Pinheiro ◽  
J.N.F. Holanda
Keyword(s):  
Water Absorption ◽  
Microstructural Evolution ◽  
Ceramic Tile ◽  
Sintered Density ◽  
Raw Materials ◽  
Microstructural Analysis ◽  
Linear Shrinkage ◽  
Ceramic Tiles ◽  
Petroleum Waste ◽  
Materials Used

In this work is done a study on the sintered microstructure of ceramic tile paste incorporated with petroleum waste. The raw materials used were kaolin, sodic feldspar, quartz and petroleum waste. The ceramic tiles containing up to 5 wt% petroleum waste were prepared by uniaxial pressing and sintered at 1200°C. The microstructural evolution was examined by SEM. In addition, water absorption, linear shrinkage, and sintered density were determined. The results showed that the microstructure of the ceramic tiles is influenced by the added petroleum waste.

Surface Modification for Porous Artificial Lightweight Aggregate and Mechanical Properties of the Resulting Concrete

2011 ◽  
Vol 117-119 ◽  
pp. 1302-1305
Author(s):  
Ning Liao ◽  
Hong Zhi Cui
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Water Absorption ◽  
Lightweight Concrete ◽  
Lightweight Aggregate ◽  
High Water ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
High Water Absorption ◽  
Change Material

This research is one part of preliminary work for integrated structural-functional energy storage concrete by using porous artificial lightweight aggregate and phase change material. Lightweight aggregate concrete (LWAC) has been applied more and more extensively in recent years, but high water absorption of porous artificial lightweight aggregate (LWA) is inconvenient for LWAC production. In order to improve LWA application, in this paper, two aspects of lightweight aggregate (LWA) study have been carried out, namely, a) LWA surface modification. The effects of different concentration of surface modifier on water absorption of modified LWA were studied. b) Mechanical properties of lightweight aggregate concrete made of the unmodified and modified LWAs Through comparing the water absorption of unmodified and modified LWAs, it can be known that the surface modification for LWA can reduce the water absorption obviously. The three kinds of lightweight concrete possess nearly same strength at 7-day and, at 28-day, the strength of LWAC using 1:20 modified LWA is highest and that of LWAC using 1:5 modified LWA is lowest. 28 days compressive strength of LWAC using 1:20 modified LWA could be up to 46.1MPa.

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

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).

Water Absorbing and Releasing of Lightweight Aggregate and its Influence on Frost-Resistance of Combined Aggregate Concrete

2011 ◽  
Vol 217-218 ◽  
pp. 51-56 ◽  
Author(s):  
Li Xiong Gao ◽  
Li Juan Kong ◽  
Yong Ge
Keyword(s):  
Water Absorption ◽  
Cement Paste ◽  
Frost Resistance ◽  
Lightweight Aggregate ◽  
High Water ◽  
Interfacial Zone ◽  
Aggregate Concrete ◽  
High Water Absorption ◽  
Dense Shell ◽  
Curing Age

Water absorbing and releasing property of lightweight aggregate (LWA) in concrete and its influence on microstructure of interfacial zone as well as frost-resistance of combined aggregate prepared with different water absorption LWA and w/b ratios were investigated. The results show that, as for concrete with low w/b ratio, the 28d frost-resistance of concrete prepared with high water absorption LWA is worse, however with the increase of curing age, the 90d frost-resistance of concrete improves obviously, which is due to the water releasing of LWA that leads to the recovery of its air entraining effect as well as the densification and thicken of interfacial zone. So the LWA with moderate water absorption should be selected to prepare the low w/b ratio concrete. As for concrete with high w/b ratio, the frost-resistance of concrete prepared with low water absorption LWA is the best. This is account for the dense shell of ceramsite that could reduce the soakage from loose cement paste under frozen pressure.

GENOTYPE RECOGNITION IN PEAS BY WATER IMBIBITION OF SEEDS

1966 ◽  
Vol 46 (5) ◽  
pp. 545-551 ◽  
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.

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