Theoretical and experimental substantiation of a thermogravimetric method for assessing the water-retention capacity and specific surface area of disperse systems

Dry hydrated lime is an air binder often used in architectural injection grouts. This study compared the influences of three commercially available dry hydrated limes on the injection grouts’ workability and mechanical properties. The main differences between the limes were in their chemical and mineralogical composition and Blaine specific surface area. The grouts were composed of dry hydrated lime, finely ground limestone filler, water, and super plasticiser. Subsequent results obtained revealed that the Blaine specific surface area is not directly related to the fresh grout properties. Grain size distribution and shape of lime particles and their aggregates in the water suspension are key parameters influencing the following fresh grout properties: fluidity, injectability, the mixture’s stability, and water retention capacity. However, the lime injection grouts’ mechanical strengths were higher in relation to an increase in the content of portlandite and the Blaine specific surface area of the dry hydrate.

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Intrinsic Relationship between Specific Surface Area and Soil Water Retention

Journal of Geotechnical and Geoenvironmental Engineering ◽

10.1061/(asce)gt.1943-5606.0001572 ◽

2017 ◽

Vol 143 (1) ◽

pp. 04016078 ◽

Cited By ~ 25

Author(s):

Morteza Khorshidi ◽

Ning Lu ◽

Idil Deniz Akin ◽

William J. Likos

Keyword(s):

Specific Surface ◽

Soil Water ◽

Surface Area ◽

Specific Surface Area ◽

Water Retention ◽

Soil Water Retention

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The Influence of Milling Parameters on the Fibrillation of PBO Fiber

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.482-484.1894 ◽

2012 ◽

Vol 482-484 ◽

pp. 1894-1897 ◽

Cited By ~ 2

Author(s):

Lin Liu ◽

Guang Li

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Rotation Number ◽

Water Retention ◽

Processing Parameters ◽

High Specific Surface Area ◽

Water Retention Value ◽

Milling Parameters ◽

Pbo Fiber

PFI mill was used to prepare PBO fibrils from PBO fiber. With the help of the observation of SEM and the measure of water retention value as well as the analysis of specific surface area, it was found that the milling parameters, including the beating rotation number, beating spacing, beating pressure and beating concentration, influenced the fibrillation of PBO fiber. The processing parameters were studied. The optimal milling conditions were obtained: beating rotation number of 40000-50000r, spacing of 2.4mm, pressure of 4.89N/mm, and concentration of 7.5%. The prepared PBO fibrillar fiber has high specific surface area of 5.001m2/g, while the original PBO fiber has only a specific surface area of 0.476m2/g.

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Relationship between specific surface area and the dry end of the water retention curve for soils with varying clay and organic carbon contents

Water Resources Research ◽

10.1029/2010wr010229 ◽

2011 ◽

Vol 47 (6) ◽

Cited By ~ 49

Author(s):

Augustus C. Resurreccion ◽

Per Moldrup ◽

Markus Tuller ◽

T. P. A. Ferré ◽

Ken Kawamoto ◽

...

Keyword(s):

Organic Carbon ◽

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Water Retention ◽

Water Retention Curve ◽

Retention Curve

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Modification of Cellulase to Different Bleached Softwood Pulp

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.550-553.1186 ◽

2012 ◽

Vol 550-553 ◽

pp. 1186-1189

Author(s):

Min Du ◽

Xin Ping Li ◽

Jin Wang ◽

Peng Zhou Wang

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Water Retention ◽

Raw Material ◽

Enzymatic Modification ◽

Water Retention Value ◽

Wetting Properties ◽

Before And After ◽

Wetting Property

Cellulase named as Novozym 476 was used to modify three kinds of bleached softwood pulps respectively. By analyzing the changes of refining degree, water retention value, specific surface area, wetting properties of fiber before and after enzymatic treatment, studied the influence of characteristics of raw material to the effect of enzymatic modification. The results indicate that in the same conditions, the refining property, water retention value, specific surface area and wetting property of the three pulps all increase. Among these three pulps, the pulp of Kamloops Kraft has the best modification effect. Refining degree of Kamloops Kraft pulp increases 36.0 °SR when refining for 10,000 PFI revolutions, and the water retention value increases by 68.0%, the dye loading increases with 0.1 mg/g, the contact angle decreases by 4.5%. It illustrates that the fiber raw material with a thin cell wall would have a better effect of enzymatic modification and the wrapping way of microfibers would influence the effect of enzymatic modification.

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