Particle size analysis and pore structure with particular reference to construction materials

1984 ◽  
Vol 21 (4) ◽  
pp. 128
Author(s):  
T. P. Lees ◽  
K. J. Burr
Keyword(s):  
Particle Size ◽  
Pore Structure ◽  
Construction Materials ◽  
Particle Size Analysis ◽  
Size Analysis

scholarly journals Effect of the Content of Micro-Active Copper Tailing on the Strength and Pore Structure of Cementitious Materials

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1861 ◽  
Author(s):  
Liming Zhang ◽  
Songbai Liu ◽  
Dongsheng Song
Keyword(s):  
Particle Size ◽  
Compressive Strength ◽  
Pore Structure ◽  
Cement Hydration ◽  
Early Stage ◽  
Cementitious Materials ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Strength Increase ◽  
Curing Age

This study investigates the effect of micr-oaggregate filling with copper tailing on the pore structure of cement paste containing copper tailing (CPCT). The particle size of the CPCT and the pore structure of CPCT were analyzed by laser particle size analysis and mercury instruction porosimetry (MIP). Results showed that at the early stage of curing time, with increasing copper tailing content, the compressive strength of cement mortar with copper tailing (CMCT) was lower, and the porosity and pore diameter of CPCT were higher and greater; with the extension of curing age, when the content of copper tailing was less than 30%, the compressive strength of CMCT and the porosity of CPCT changed slightly with the increase of the content of copper tailing. However, the maximum hole diameter of CPCT decreased gradually (a curing age between 7 d and 365 d under standard conditions). Scanning electron microscopy analysis showed that at the early stage of cement hydration in the CPCT, the copper tailing did not fill the pores in CPCT well, while in the later stage of cement hydration, the microaggregates of copper tailing filled the pores well and closely combined with the surrounding hydration products. In the later stage of cement hydration, the microaggregate filling of copper tailing was primarily responsible for the strength increase of the CMCT.

APSAS; an Automated Particle Size Analysis System

Circular ◽  
1985 ◽  
Author(s):  
Lawrence J. Poppe ◽  
A.H. Eliason ◽  
J.J. Fredericks
Keyword(s):  
Particle Size ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Analysis System
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