scholarly journals STUDY ON THE PREDICTION FORMULA FOR TIME-DEPENDENT STRAIN OF CONCRETE : Prediction formula of drying shrinkage strain

2005 ◽  
Vol 70 (597) ◽  
pp. 9-15 ◽  
Author(s):  
Yoshiaki SATO ◽  
Chizuru KIYOHARA ◽  
Kohji TERANISHI ◽  
Keiichi IMAMOTO ◽  
Hirozo MIHASHI ◽  
...  
Keyword(s):  
Drying Shrinkage ◽  
Shrinkage Strain ◽  
Time Dependent ◽  
Prediction Formula ◽  
Dependent Strain

scholarly journals STUDY ON THE PREDICTION FORMULA FOR TIME-DEPENDENT STRAIN OF CONCRETE : Prediction formula of total creep strain

2006 ◽  
Vol 71 (599) ◽  
pp. 9-15 ◽  
Author(s):  
Yoshiaki SATO ◽  
Chizuru KIYOHARA ◽  
Keiichi IMAMOTO ◽  
Kohji TERANISHI ◽  
Hirozo MIHASHI ◽  
...  
Keyword(s):  
Creep Strain ◽  
Time Dependent ◽  
Prediction Formula ◽  
Dependent Strain

scholarly journals Measurement of Dry and Autogenous Shrinkages and Thermal Strain of Early Age Concrete Pavement

2021 ◽  
Author(s):  
Jaewook Ku ◽  
Seunghyun Roh ◽  
Hyunsik Hwang
Keyword(s):  
Service Life ◽  
Thermal Strain ◽  
Autogenous Shrinkage ◽  
Drying Shrinkage ◽  
Shrinkage Strain ◽  
Middle Part ◽  
Early Age ◽  
Dependent Strain ◽  
Stress Dependent ◽  
Early Age Concrete

(1)Background: Early-age concrete shrinkage induces stress that impact the cost and service life of concrete pavements. (2)Methods: In this study, strain measurements of field slabs were conducted and a methodology was presented that independently derived autogenous, drying, and thermal shrinkages in the initial stages of concrete placement. Total strain was measured according to five different environmental conditions and shrinkage strain was calculated for each condition. (3)Results: By measuring the strain of the slab and the specimen, the drying shrinkage strain was measured to be approximately 54% better than that by the conventional non-stressed cylinder method because it was possible to measure the drying shrinkage strain at the surface rather than in the middle part of the slab along its depth direction. When the water-to-cement ratio increased (35→40%), there was a considerable reduction (317με→82με) of autogenous shrinkage strain for the concrete at 28 days of age. Furthermore, calculation of stress-dependent strain allowed the presentation of more intuitive and accurate results. (4)Conclusion: As the measurement of independent shrinkage occurrence is possible, the consequent calculated result of the stress-dependent strain acting on real slabs will facilitate improvement in the construction quality, reduction in the development of defects in the concrete structure, and increase in the service life.

Drying Shrinkage of Concrete Affected by Content of Stone Powder in Proto-Machine-Made Sand

2010 ◽  
Vol 152-153 ◽  
pp. 1176-1179 ◽  
Author(s):  
Feng Lan Li ◽  
Qian Zhu
Keyword(s):  
Compressive Strength ◽  
Standard Method ◽  
Structural Engineering ◽  
Drying Shrinkage ◽  
Shrinkage Strain ◽  
Test Results ◽  
Similar Test ◽  
Mix Proportion ◽  
Compressive Strength Of Concrete ◽  
Main Factor

To improve the application of the new proto-machine-made sand in structural engineering, tests are carried out to study the drying shrinkage of concrete affected by stone powder in proto- machine-made sand. The target cubic compressive strength of concrete is 55 MPa, the main factor varied in mix proportion of concrete is the contents of stone powder by mass of proto-machine-made sand from 3 % to 16 %. The drying shrinkage strains of concrete are measured by the standard method at the ages of 1 d, 3 d, 7 d, 14 d, 28 d, 60 d, 90 d, 120 d, 150 d and 180 d. Based on test results, the drying shrinkage of concrete affected by the contents of stone powder in proto-machine-made sand is analyzed and compared with that of similar test of concrete with traditional machine-made sand, which shows that there is the optimum content of stone powder resulting in the lower drying shrinkage of concrete. The formula for predicting drying shrinkage strain of concrete is proposed.

Time-dependent drying shrinkage model for concrete with coarse and fine recycled aggregate

2020 ◽  
Vol 105 ◽  
pp. 103426 ◽  
Author(s):  
Huan Zhang ◽  
Yuyin Wang ◽  
Dawn E. Lehman ◽  
Yue Geng ◽  
Katherine Kuder
Keyword(s):  
Drying Shrinkage ◽  
Time Dependent ◽  
Recycled Aggregate

Modeling of the time-dependent strain response of electroactive NCC-PEO and PVDF composites

2015 ◽  
Author(s):  
Patrick S. Bass ◽  
Lauchlin Blue ◽  
Lin Zhang ◽  
Mi Li ◽  
Z.-Y. Cheng ◽  
...  
Keyword(s):  
Time Dependent ◽  
Strain Response ◽  
Dependent Strain

The time dependent strain potential function for a polymeric glass

Polymer ◽  
1985 ◽  
Vol 26 (4) ◽  
pp. 543-550 ◽  
Author(s):  
Gregory B. McKenna ◽  
Louis J. Zapas
Keyword(s):  
Potential Function ◽  
Time Dependent ◽  
Dependent Strain ◽  
Polymeric Glass

Study on Durability of High Bending Strength Pavement Concrete

2012 ◽  
Vol 594-597 ◽  
pp. 1372-1376
Author(s):  
Wei Hong Guo
Keyword(s):  
Wear Resistance ◽  
Bending Strength ◽  
Drying Shrinkage ◽  
Fatigue Property ◽  
Plain Concrete ◽  
Shrinkage Strain ◽  
Test Results ◽  
Concrete Material ◽  
Shrinkage Coefficient ◽  
Pavement Concrete

In order to explore the durability of high bending strength pavement concrete, adding silica flour, fibrous reticulum, SD emulsion and HG emulsion separately in concrete mixture, the shrinkage characteristic, wear resistance and fatigue property of different high bending strength pavement concrete are tested, and contrastive analysis with the plain concrete material is researched. The test results show that the early contraction of HBSPC is bigger, but the total drying shrinkage strain is smaller than plain concrete, and the drying shrinkage stable stage of HBSPC is shorter than plain concrete. The temperature shrinkage of HBSPC and plain concrete is uniform basically, the temperature shrinkage coefficient of HBSPC is lower than the plain concrete in the negative warm area and warm area, but it is higher in 0 °C neighbor. The mixtures of the material enhance the wear resistance and fatigue property of concrete.

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