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Plastic Shrinkage Cracking of Concrete
Australian Journal of Structural Engineering, 2010Plastic shrinkage cracking, which occurs during the first several hours after the casting of concrete, is of considerable economic significance in the concrete construction industry. In this paper, the mechanism of plastic shrinkage cracking and its related phenomena of evaporation and bleeding are first reviewed.
Dao, V. T. N. +3 more
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Plastic shrinkage cracking in 3D printed concrete
Composites Part B: Engineering, 2020Abstract In concrete, early age pore water evaporation results in volumetric shrinkage that, if restrained, can cause plastic shrinkage cracking (PSC). 3D printed concrete (3DPC) is vulnerable to PSC due to a lack of formwork, minimal bleeding water, low aggregate to binder ratio and high quantities of fines in the mixture.
Gerrit M. Moelich +2 more
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Plastic shrinkage of steel fibre reinforced concrete
Materials and Structures, 1990The paper presents the results of an experimental investigation on the plastic shrinkage of steel fibre reinforced concrete (SFRC). Tests were carried out on mixes with cement content ranging between 370 and 468 kg m−3. Four types of steel fibres were used: melt extract, hooked, crimped and Harex. The volume of, fibres ranged between 0 and 4.47% of the
P. S. Mangat, M. M. Azari
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Magazine of Concrete Research, 1994
The proposed model of plastic shrinkage is based on the idea that the capillary pressure in a saturated mixture, exposed to drying, depends on the geometry of the spaces between the solid particles near the surface of evaporation and the difference between the amount of evaporated water and the amount of water transferred from inside the mixture to ...
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The proposed model of plastic shrinkage is based on the idea that the capillary pressure in a saturated mixture, exposed to drying, depends on the geometry of the spaces between the solid particles near the surface of evaporation and the difference between the amount of evaporated water and the amount of water transferred from inside the mixture to ...
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ACI Journal Proceedings, 1968
PLASTIC SHRINKAGE CRACKING OF MORTARS EXPOSED TO DIFFERENT CONDITIONS, AS PREVALENT IN HOT-DRY CLIMATES, WAS INVESTIGATED UNDER CONTROLLED CONDITIONS. THE VARIABLES STUDIED WERE AIR TEMPERATURE AND HUMIDITY, WIND VELOCITY, MORTAR TEMPERATURE, TYPE AND CONTENT OF CEMENT, AND CONSISTENCY.
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PLASTIC SHRINKAGE CRACKING OF MORTARS EXPOSED TO DIFFERENT CONDITIONS, AS PREVALENT IN HOT-DRY CLIMATES, WAS INVESTIGATED UNDER CONTROLLED CONDITIONS. THE VARIABLES STUDIED WERE AIR TEMPERATURE AND HUMIDITY, WIND VELOCITY, MORTAR TEMPERATURE, TYPE AND CONTENT OF CEMENT, AND CONSISTENCY.
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Typical plastic shrinkage cracking behaviour of concrete
Magazine of Concrete Research, 2013Plastic shrinkage cracking (PShC) is one of the earliest forms of cracking in concrete. Concrete structures with large exposed surfaces are especially vulnerable to PShC and the cracks formed are unsightly and can lead to premature durability issues.
Riaan Combrinck, William Peter Boshoff
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Magazine of Concrete Research, 2022
Plastic shrinkage cracking propagating at early ages inevitably impairs the performance of concrete structures. To mitigate this, using a recently developed shrinkage-reducing polycarboxylate superplasticiser (SR-PCA) with outstanding shrinkage-reducing and water-reducing effectiveness can be a promising approach.
Jian Zhang +7 more
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Plastic shrinkage cracking propagating at early ages inevitably impairs the performance of concrete structures. To mitigate this, using a recently developed shrinkage-reducing polycarboxylate superplasticiser (SR-PCA) with outstanding shrinkage-reducing and water-reducing effectiveness can be a promising approach.
Jian Zhang +7 more
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Plastic Shrinkage Cracking and Evaporation Formulae
ACI Materials Journal, 1998Freshly placed concrete exposed to hot, windy conditions is often prone to plastic shrinkage cracking, though other conditions can also promote this phenomenon. This type of cracking is normally noticed on slabs, pavements, beams, and generally other flat concrete surfaces.
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Influence of Shrinkage-Reducing Admixtures on Development of Plastic Shrinkage Cracks
ACI Materials Journal, 2007Cracking that forms between concrete placement and concrete setting is generally described as plastic shrinkage cracking. The authors discuss how concave menisci may form on fresh concrete surfaces due to water evaporation. Potential development of plastic shrinkage cracks may occur when concrete surface tensile stress and concrete settlement develop ...
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Plastic shrinkage cracking in cementitious repairs and overlays
Materials and Structures, 2008A study was undertaken to investigate the influence of mixture proportions on plastic shrinkage cracking in cementitious repairs and overlays. The following variables were studied: water-cement ratio (w/c), sand-cement ratio (s/c) aggregate-cement ratio (a/c), fly-ash content, and the presence of a shrinkage reducing admixture (SRA).
N. Banthia, R. Gupta
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