scholarly journals Fundamental Properties of Alumina Cement Mortar by Insulation Curing Method under Low Temperature

2017 ◽  
Vol 17 (5) ◽  
pp. 419-427
Author(s):  
Jung-Hoon Park ◽  
Kyoung-Kuk Ki
Keyword(s):  
Low Temperature ◽  
Cement Mortar ◽  
Alumina Cement ◽  
Fundamental Properties ◽  
Curing Method

The Properties of Cement Mortar Reinforced by Pistachio Shells Fibre

2021 ◽  
Vol 1021 ◽  
pp. 210-219
Author(s):  
Mohammed Qasim Al Karawi ◽  
Rasha Jasim Al Karawi ◽  
Tumadhir Merawi Borhan
Keyword(s):  
Lightweight Concrete ◽  
Cement Mortar ◽  
Agricultural Wastes ◽  
Current Investigation ◽  
Fundamental Properties ◽  
Optimum Content ◽  
Cement Mortars

Pistachio shells (PS) are one of the agricultural wastes, that are considered as economic and wide available material. It has some features that encourage using it to produce lightweight concrete and cement mortar. The essential objective of the current investigation is to evaluate the possibility of incorporating PS as a fibre in the cement mortar and the effect on its properties. Four different fibre percentages (0%, 0.5%, 1% and 1.5% by volume of cement) were examined. After curing the samples for 7 and 28 days, the fundamental properties of the cement mortars, including splitting tensile and compressive strengths I addition to the density, were determined and compared. The results revealed that the optimum content of the pistachio shells fibre lies between 0.5% and 1% where the splitting tensile and compressive strengths increased and the mortar’s density reduced at age of 28 days.

scholarly journals Viscosity and Antiwashout Properties of Cement Mortar at Low Temperature Seawater Environment

2014 ◽  
Vol 26 (6) ◽  
pp. 1595-1598
Author(s):  
Heon Chang Kim ◽  
In-Kyu Jang ◽  
Seung-Kyu Park
Keyword(s):  
Low Temperature ◽  
Cement Mortar ◽  
Seawater Environment

Influence of Temperature on the Hydration Heat of Polymer Modified Mortars

2013 ◽  
Vol 687 ◽  
pp. 130-135
Author(s):  
Si Feng Liu ◽  
Si Jun Guo ◽  
Pei Ming Wang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Vinyl Acetate ◽  
Cement Mortar ◽  
Ethylene Vinyl Acetate ◽  
Hydration Heat ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Effects Of Temperature ◽  
Isothermal Calorimeter

The hydration heat of polymer modified mortar were measured at 5°C、10°C、20°C and 40°C using Multi-channel Isothermal calorimeter. The effects of temperature on hydration heat of polymer modified mortars with 0.1% methyl hydroxylpropyl cellulose (MHPC), 3% ethylene vinyl acetate (EVA) and 0.1%MHPC+3%EVA were investigated. The curves of hydration heat show that the polymer reduces the hydration heat of mortars and it is related to the temperature. The effects will be more and more remarkable with the increasing of temperature; Temperature also affects the exothermic rate peak of polymer modified mortars. The exothermic rate peak of polymer modified mortar at low temperature is almost equal to that of the ordinary cement mortar. However, it is obviously lower than that of ordinary cement mortar at high temperature ; The time to the exothermic rate peak of polymer modified mortar is also related to the temperature.

Evaluation of Rate of Chloride Transport for Alumina Cement Mortar with Different Composition of Clinkers

2018 ◽  
Vol 30 (4) ◽  
pp. 383-390 ◽  
Author(s):  
Hee Jun Yang ◽  
Hyun Bo Shim ◽  
Sung Ho Jin ◽  
Ki Yong Ann
Keyword(s):  
Cement Mortar ◽  
Chloride Transport ◽  
Alumina Cement

In situ low temperature As-doping of Ge films using As(SiH3)3 and As(GeH3)3: fundamental properties and device prototypes

2015 ◽  
Vol 30 (10) ◽  
pp. 105028 ◽  
Author(s):  
Chi Xu ◽  
J D Gallagher ◽  
P M Wallace ◽  
C L Senaratne ◽  
P Sims ◽  
...  
Keyword(s):  
Low Temperature ◽  
As Doping ◽  
Fundamental Properties

scholarly journals Research on Crack Resistance of Semi-flexible Pavement Materials

2021 ◽  
Vol 248 ◽  
pp. 01020
Author(s):  
Wu Jiahong
Keyword(s):  
Low Temperature ◽  
Crack Resistance ◽  
Influencing Factors ◽  
Cement Mortar ◽  
Orthogonal Design ◽  
Flexible Pavement ◽  
Volume Stability ◽  
Pavement Materials ◽  
The Matrix ◽  
Matrix Porosity

Semi-flexible pavement has been widely used in China's road construction due to its excellent rutting resistance. Due to the large difference in volume stability between the matrix asphalt mixture and the cement mortar, the internal stress of the semi-flexible pavement material is concentrated and cracking is likely to occur. To explore the influence of different Influencing factors on the cracking resistance of semi-flexible pavement materials. This paper used the orthogonal design method to design the mix ratio of ordinary cement mortar. On this basis, admixtures (silica fume, ordinary emulsified asphalt, water-based epoxy resin) were added to prepare special cement mortar. Then, using cement mortar type, matrix porosity, matrix asphalt type, matrix aggregate type as the influencing factors, this article has studied his influence on the crack resistance of semi-flexible pavement materials. Tests show that cement mortar type, matrix porosity, matrix asphalt type, matrix aggregate type have varying degrees of influence on the crack resistance of semi-flexible pavement. The effect of matrix porosity on low temperature crack resistance is the greatest, followed by asphalt and cement mortar types, and the lowest by aggregate type. Enhancing the flexibility of cement mortar and enhancing the elastoplasticity of the matrix are conducive to improving the low-temperature performance of semi-flexible pavements.

Properties of Alkali-Activated Cement Mortar by Curing Method

2014 ◽  
Vol 26 (2) ◽  
pp. 117-124 ◽  
Author(s):  
Ji-Hoon Kim ◽  
Jae-Kyu Lee ◽  
Won-Gil Hyung
Keyword(s):  
Cement Mortar ◽  
Curing Method ◽  
Alkali Activated ◽  
Alkali Activated Cement

Properties of Non-Sintered Cement Mortar using Alkali and Sulfate Mixed Stimulants Accroding to Curing Method

2015 ◽  
Vol 27 (3) ◽  
pp. 237-244
Author(s):  
Sung-Joon Park ◽  
Ji-Hoon Kim ◽  
Won-Gil Hyung
Keyword(s):  
Cement Mortar ◽  
Curing Method

Evaluation of the internal high alumina cement mortar lining of ductile cast iron pipes used in sewage transportation

2008 ◽  
Vol 29 (6) ◽  
pp. 1280-1283 ◽  
Author(s):  
S.A.S. El-Hemaly ◽  
H.A.M. Abdallah ◽  
M.F. Abadir ◽  
H.H. El Sersy
Keyword(s):  
Cast Iron ◽  
Cement Mortar ◽  
Ductile Cast Iron ◽  
High Alumina ◽  
Alumina Cement ◽  
High Alumina Cement
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