scholarly journals PCE and BNS admixture adsorption in sands with different composition and particle size distribution

2017 ◽  
Vol 67 (326) ◽  
pp. 121 ◽  
Author(s):  
M. M. Alonso ◽  
R. Martínez-Gaitero ◽  
S. Gismera-Diez ◽  
F. Puertas
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Water Demand ◽  
Mineralogical Composition ◽  
Practical Experience ◽  
Clay Material ◽  
Great Complexity

The choice of a superplasticiser (SP) for concrete is of great complexity, as it is well known that properties of the end product are related to admixture and its compatibility with concrete components. Very few studies have been conducted on the compatibility between SPs and the sand of mortars and concretes, however. Practical experience has shown that sand fineness and mineralogical composition affect water demand and admixture consumption. Clay-containing sand has been found also to adsorb SPs, reducing the amount available in solution for adsorption by the cement. This study analysed the isotherms for PCE and BNS superplasticiser adsorption on four sands with different fineness and compositions commonly used to prepare mortars and concretes. BNS-based SP did not adsorb on sands, while PCE-based admixtures exhibited variable adsorption depending on different factors. The adsorption curves obtained revealed that the higher the sand fineness, the finer the particle size distribution and the higher the clay material, the greater was PCE admixture adsorption/ consumption.

Analysis of particle size distribution of landfill contaminated soils and their mineralogical composition

2019 ◽  
Vol 38 (7) ◽  
pp. 843-853
Author(s):  
Joan Nyika ◽  
Ednah Onyari ◽  
Megersa Dinka ◽  
Shivani Mishra
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Contaminated Soils ◽  
Mineralogical Composition

Using Lime Mud Waste from Pulp Mill as an Additive in Brick Clay

2014 ◽  
Vol 608 ◽  
pp. 3-7
Author(s):  
Srichalai Khunton ◽  
Siriphan Nilpairach ◽  
Supin Sangsuk
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Pulp Mill ◽  
Mineralogical Composition ◽  
X Ray Diffraction ◽  
Brick Clay ◽  
X Ray ◽  
Lime Mud ◽  
Firing Shrinkage

Lime mud from a pulp mill was used as an additive in brick clay from the southern part of Thailand. It was mixed with the clay from Cha-Aud district, Nakorn Sithammarat province. The chemical composition of lime mud and the clay was characterised by X-ray fluorescence (XRF), and the mineralogical composition was measured by X-ray diffraction (XRD). The particle size distribution was also measured. The main composition of lime mud is CaO, and Cha-Aud clay consists of SiO2 and Al2O3 as major oxides. The lime mud contains calcite as a major phase when Cha-Aud clay is constituted by quartz, kaolinite, illite and goethite. Particle size distribution of lime mud is in the range of 1-50 μm. After the lime mud was neutralized using hydrochloric acid, it was mixed with Cha-Aud clay at 10 wt%. Samples with and without lime mud were sintered at 700, 800, 900 and 1000°C for 1 hour. The results showed that lime mud can be used as an additive in brick clay. Both types of samples were similar in terms of physical properties when their linear firing shrinkage, water absorption and flexural strength were in the same range.

Soil Development and Fertility Characteristics of Inland Valleys in the Rain Forest Zone of Nigeria: Mineralogical Composition and Particle-Size Distribution

Pedosphere ◽  
2009 ◽  
Vol 19 (4) ◽  
pp. 505-514 ◽  
Author(s):  
S.S. ABE ◽  
G.O. OYEDIRAN ◽  
T. MASUNAGA ◽  
S. YAMAMOTO ◽  
T. HONNA ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Rain Forest ◽  
Mineralogical Composition ◽  
Soil Development ◽  
Forest Zone

Mineralogical composition and particle size distribution as a key to understand the technological properties of Ukrainian ball clays

2015 ◽  
Vol 108 ◽  
pp. 102-110 ◽  
Author(s):  
Chiara Zanelli ◽  
Claudio Iglesias ◽  
Eduardo Domínguez ◽  
Davide Gardini ◽  
Mariarosa Raimondo ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Mineralogical Composition ◽  
Technological Properties ◽  
Ball Clays

Characterization of Clay Used in Structural Ceramic

2015 ◽  
Vol 820 ◽  
pp. 24-29
Author(s):  
Alessandra Savazzini dos Reis ◽  
Jailson N. Oliveira ◽  
Viviana P. della Sagrillo ◽  
Francisco R. Valenzuela-Diaz
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Mineralogical Composition ◽  
High Water ◽  
High Water Content ◽  
High Plasticity ◽  
Structural Ceramic

Structural ceramic quality is particularly related to the quality of the clays. Our aim is to characterize the common clay called Batinga used in the ceramic industry in Colatina - ES, which has a ceramic pole with about twenty companies. Batinga samples were tested for chemical and mineralogical composition, particle size distribution characterization, thermal behavior, optical microscopy, SEM and Atterberg limits. The specimens were shaped, dried at 110oC, burned in industrial furnace and submitted to ceramic test. The results show that the clay presents typical chemical composition of raw clay with significant amount of silica and alumina, besides adequate particle size distribution and mineralogical composition. The high plasticity shown may require high water content in the molding of ceramic roof tiles. The tests yielded results that showed that the clay meets the requirements of the Brazilian standard for structural ceramic.

scholarly journals A SEM-based method to determine the mineralogical composition and the particle size distribution of suspended sediment

2019 ◽  
Vol 34 (2) ◽  
pp. 85-94 ◽  
Author(s):  
Sylvain Pinet ◽  
Bruno Lartiges ◽  
Jean-Michel Martinez ◽  
Sylvain Ouillon
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Suspended Sediment ◽  
Mineralogical Composition
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