Modeling the Drying Shrinkage Cracking of Untreated Soils and Cementitiously Stabilized Soils

2015 ◽  
Vol 2511 (1) ◽  
pp. 90-101
Author(s):  
Xiaojun Li ◽  
Haifang Wen ◽  
Balasingam Muhunthan
Keyword(s):  
Drying Shrinkage ◽  
Shrinkage Cracking

scholarly journals STUDY ON DRYING SHRINKAGE CRACKING PROPERTIES OF FLY ASH MORTAR UNDER DIFFERENT DRYING CONDITIONS

2017 ◽  
Vol 71 (1) ◽  
pp. 386-393
Author(s):  
Satoshi YOSHIKAWA ◽  
Yoshiaki SATO ◽  
Toshihiro OTANI ◽  
Kenji UEDA
Keyword(s):  
Fly Ash ◽  
Drying Shrinkage ◽  
Shrinkage Cracking ◽  
Drying Conditions

Control of Cracking with Shrinkage-Reducing Admixtures

1997 ◽  
Vol 1574 (1) ◽  
pp. 25-36 ◽  
Author(s):  
Surendra P. Shah ◽  
Shashidhara Marikunte ◽  
Wei Yang ◽  
Corina Aldea
Keyword(s):  
Drying Shrinkage ◽  
Plain Concrete ◽  
Type Specimen ◽  
Wire Mesh ◽  
Restrained Shrinkage ◽  
Shrinkage Cracking ◽  
Restrained Shrinkage Cracking ◽  
Tensile Forces ◽  
Parking Garages ◽  
Shrinkage Reducing Admixtures

Shrinkage cracking can be a critical problem in concrete construction, especially for flat structures such as highway pavements, slabs for parking garages, and bridge decks. One way to reduce the shrinkage cracking is to provide reinforcement in the form of wire mesh to resist tensile forces. In recent years, short, randomly distributed fibers have been used to control shrinkage cracking. The efficiency of shrinkage-reducing admixtures (SRAs) in controlling restrained shrinkage cracking of concrete is reviewed. A ring-type specimen was used for restrained shrinkage cracking tests. The SRA selected for this investigation was a propylene glycol derivative, which was used at 1 and 2 percent by weight of cement. Free (unrestrained) shrinkage, weight loss, compressive strength, and fracture toughness were also investigated. The results of SRA concretes were compared with that of plain concrete with the same water-to-cement ratio. A theoretical model based on nonlinear fracture mechanics was developed for predicting transverse cracking of the concrete ring specimen caused by drying shrinkage. The model prediction of time to cracking compared well with the experimental data. The model can be extended to different geometries and dimensions than those considered in this research.

Drying shrinkage cracking of concrete using dune sand and crushed sand

2016 ◽  
Vol 126 ◽  
pp. 517-526 ◽  
Author(s):  
Euibae Lee ◽  
Sangjun Park ◽  
Yongjic Kim
Keyword(s):  
Drying Shrinkage ◽  
Dune Sand ◽  
Shrinkage Cracking

Flexural Strength and Drying Shrinkage Cracking of Concrete Mixed with Hwang-toh

2009 ◽  
Vol 96 (1) ◽  
pp. 158-166
Author(s):  
Jang Ho Jay Kim ◽  
Sung Bae Kim ◽  
Hyun Young Kim ◽  
Keun Sung Lee ◽  
Yun Mook Lim ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Drying Shrinkage ◽  
Shrinkage Cracking

scholarly journals Effects of Combined Salt-Damage Resistant Agent on the Shrinkage, Chloride Penetration and Chemical Erosion of Mortar

2019 ◽  
Vol 9 (1) ◽  
pp. 3813-3818
Keyword(s):  
Large Scale ◽  
Sea Water ◽  
Water Environment ◽  
Reduction Rate ◽  
Drying Shrinkage ◽  
Shrinkage Cracking ◽  
Aluminum Salts ◽  
Salt Damage ◽  
Restrained Shrinkage Cracking ◽  
Chlorine Ion

Reinforced concrete structures located on coastal landfill frequently adjoin sea-water environment, and are exposed to sea water and humid environment during construction. Particularly, in the case of large-scale structures like dams, their drying shrinkage is accompanied by fatal cracking, and thus chlorine ion penetration becomes easier. The present study develops a salt damage-resistant agent (SRA) to which aluminum salts, oligomer condensate, and amino alcohol derivatives with the alkyl group are applied as binding inducers. SRA performs the roles of reducing the drying shrinkage of cement composites, binding chlorine ions, and preventing erosion by sulfate ions. This study tests and evaluates its resistance to degradation factors that may occur to structures constructed on coastal landfill and so on. As a result of evaluating shrinkage cracking properties by performing the restrained shrinkage cracking test, SRC showed the shrinkage reduction compared with BSC. As for the performance of resistance to chlorine ion and the chemical sulfate erosion rate, SRC showed the highest resistance performance, followed by BSC and OPC, regardless of the concentration of aqueous solutions for immersion. In addition, as for the rate of mortar weight change by sulfate erosion, the SRA-intermixed SRC mixture showed a weight reduction rate at the level of 1/3 of BSC and 1/6 of OPC, respectively

scholarly journals A review on the influence of shrinkage reducing admixtures on concrete

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Jerison Scariah James ◽  
Angel Rose ◽  
Elson John ◽  
Sachin Paul
Keyword(s):  
Surface Tension ◽  
Autogenous Shrinkage ◽  
Drying Shrinkage ◽  
Common Source ◽  
Shrinkage Cracking ◽  
Plastic Shrinkage ◽  
Concrete Mixtures ◽  
Shrinkage Reducing Admixture ◽  
Shrinkage Reducing Admixtures ◽  
Damage In Concrete

Shrinkage cracking is a common source of distress in concrete structures. In addition to being unsightly, these cracks serve to accelerate other forms of damage in concrete, thereby shortening the service life of structures. One solution to reduce the potential for shrinkage cracking is to incorporate a shrinkage reducing admixture (SRA) in concrete mixtures. SRAs belong to a special type of organic chemicals (i.e., surfactants) that when mixed in water, reduce the surface tension of the liquid, and thereby reduce the magnitude of capillary stresses and shrinkage strains that occur when concrete is losing moisture. Various studies show that SRAs have proven to reduce drying, autogenous, and plastic shrinkage, which has been summarized in this literature. Keywords—Shrinkage Reducing Admixtures, Surfactants, Drying shrinkage, Plastic shrinkage, Autogenous shrinkage.

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