Results 251 to 260 of about 90,023 (305)

Drying shrinkage of expansive cements

Journal of Materials Science, 1988
Drying shrinkage behaviour of expansive cement pastes were studied and compared with those of portland cements. Results indicate that the shrinkage behaviour of these two cements is significantly different from each other. Generally, expansive cements shrink more than portland cements, and especially more so if they have not been adequately cured, i.e.
Menashi D. Cohen, Barzin Mobasher
openaire   +1 more source

Drying Shrinkage Mitigation

2020
This chapter focuses on understanding the drying shrinkage phenomenon and the mechanism that leads to cracking of concrete. The recent trends to increase the cementitious content of concrete, requiring high performance for bridge decks and highway pavement overlays, are prone to shrinkage and potential cracking.
openaire   +1 more source

Freeze‐drying shrinkage of glutaraldehyde fixed liver

Journal of Microscopy, 1981
SUMMARYDimensional changes were recorded during the freeze drying (FD) of 1 mm cubes of glutaraldehyde (GA) fixed adult mouse liver. The areas of the front faces of these blocks was measured using a Quantimet 720 image analysing computer system. Interpolating the first straight line portion of the graphs of size versus time backwards to the origin ...
A, Boyde, F, Franc
openaire   +2 more sources

Interpretation of Aerogel Shrinkage During Drying.

MRS Proceedings, 1992
ABSTRACTA variety of silica aerogels have been prepared by the hydrolysis of TEOS, and dried using supercritical CO2. The shrinkage which occurs during the drying process is dependent on the gel formulation and the extent of aging of the gels in their pore liquor.
Bharath Rangarajan, Carl T. Lira
openaire   +1 more source

Compliance Acceptance of Concrete Drying Shrinkage

Australian Journal of Structural Engineering, 2002
In Australia, strength, and in particular compressive strength, has been used in AS 3600 and AS 1379 as a benchmark for structural performance, for durability and as a contractual basis for concrete supply. With tightening financial constraints and the ensuing need for increased construction efficiencies, there is a bigger emphasis on the provision of ...
Vute Sirivivatnanon, Daksh Baweja
openaire   +1 more source

Shrinkage during drying of foodstuffs

Journal of Food Engineering, 1994
Abstract Experimental shrinkage data as a function of water content for particles of potatoes, apples and carrots of different geometry and under various drying conditions are presented. Volumetric shrinkage of individual particles is affected mainly by air velocity; other drying variables have negligible effect.
openaire   +1 more source

Shrinkage of potato slice during drying

Journal of Food Engineering, 2009
Abstract The effects of drying conditions on shrinkage of potato slices were studied. A thin-layer dryer with machine vision system and image processing software was used. Potato slices were dried at temperatures of 60, 70, 80 °C and air velocities of 0.5 and 1.0 m/s.
Alireza Yadollahinia, Mehdi Jahangiri
openaire   +1 more source

SHRINKAGE OF STRAWBERRIES DURING MICROWAVE DRYING

Drying Technology, 1999
ABSTRACT Strawberries were pretreated with ethyl oleate and sodium hydroxide solution to make the skin transparent to moisture diffusion. The treated berries were dried with convective air at 45°C and microwaves at two power levels of 0.1 and 0.2 W/g. During the drying process change in shrinkage ratio with respect to moisture ratio was studied.
G.S.V. Raghavan, K. Venkatachalapathy
openaire   +1 more source

Shrinkage during drying of silica gel

Journal of Non-Crystalline Solids, 1995
Abstract A model is provided for predicting gel shrinkage during drying by combining the empirical observations that: (1) the bulk modulus of a gel increases with density, ρ, according to K p = K 0 ( ρ ρ y ) m (2.5 ≤ m ≤ 4) ; and (2) the variation in pore radius, r, is approximately proportional to pore volume ...
D.M. Smith, G.W. Scherer, J.M. Anderson
openaire   +1 more source

Shrinkage in Fish Muscle During Drying

Journal of Food Science, 1986
ABSTRACT Shrinkage of rectangular slabs of ocean perch ( Sebastes marinus ) in all three dimensions during air drying at 24.5°C, relative humidity 35% and velocity 35.6 m/min was determined. Percent change in dimensions with volume fraction of water was measured.
M. BALABAN, G.M. PIGOTT
openaire   +1 more source