scholarly journals LONG-TERM STRENGTH PROPERTY AND MARINE ENVIRONMENT ADAPTABILITY OF SOIL BLOCK PRODUCED BY CEMENT-MIXING AND MECHANICAL DEHYDRATION

2017 ◽  
Vol 73 (2) ◽  
pp. 186-194 ◽  
Author(s):  
Kiyonobu KASAMA ◽  
Kayo DOUMOTO ◽  
Mitsunari HIRASAWA ◽  
Kouki ZEN ◽  
Zentaro FURUKAWA
Keyword(s):  
Strength Property ◽  
Marine Environment ◽  
Term Strength ◽  
Soil Block

Durability of Aramid Ropes in a Marine Environment

2008 ◽  
Author(s):  
Guillaume Derombise ◽  
Laetitia Van Schoors ◽  
Peter Davies ◽  
Loic Dussud
Keyword(s):  
Marine Environment ◽  
Deep Sea ◽  
Strength Reduction ◽  
Term Strength ◽  
Aramid Fibers ◽  
Specific Test ◽  
Significant Strength ◽  
First Results ◽  
Strength Retention

This paper presents first results from a study of the long term marine durability of aramid fibers. The program was started based on the experience of IFREMER using aramid fiber ropes for instrumentation and deep sea handling lines, which is described here. Instrumentation lines showed no degradation after recovery, but results from testing of handling ropes after service indicated significant strength reduction. This led to the development of specific test facilities to study bend-over-sheave performance. The overall aim is to improve understanding of the roles of both the fiber and the rope construction in a marine environment, in order to improve long term strength retention of aramid marine ropes.

scholarly journals LONG TERM STRENGTH CHARACTERISTIC OF CEMENT-TREATED AND HIGH-PRESSURE-DEHYDRATED SOIL BLOCK

2020 ◽  
Vol 76 (2) ◽  
pp. I_630-I_635
Author(s):  
Kazutaka UENO ◽  
Kiyonobu KASAMA ◽  
Yasuyuki NAKAGAWA ◽  
Yasuhiro SEGA ◽  
Masaharu MINAMI ◽  
...  
Keyword(s):  
High Pressure ◽  
Strength Characteristic ◽  
Term Strength ◽  
Soil Block

scholarly journals Correlation between the Compressive, Tensile Strength of Old Concrete under Marine Environment and Prediction of Long-Term Strength

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Weilai Yao ◽  
Shiyong Jiang ◽  
Wei Fei ◽  
Tao Cai
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Marine Environment ◽  
Concrete Strength ◽  
Exponential Model ◽  
Experimental Result ◽  
Term Strength ◽  
Two Parameters ◽  
The Relationship

Compressive strength and tensile strength are important mechanical properties of concrete. The long-term strength of concrete under real service environment is an important parameter when evaluating existing buildings, which should also be properly considered in structural design. In this study, the relationship between compressive and splitting tensile strength of old concrete existing for long period under marine environment was investigated. At a deserted harbour, concrete cores samples were drilled by pairs in site. For each pair of samples, the two cores were drilled from the adjacent location and conducted to compressive, splitting tensile test, respectively. 48 compressive and splitting tensile strengths were finally obtained. From the test results, tensile strength presents general uptrend with compressive strength, and the two parameters are well positively correlated. Exponential model generally recommended by building codes or literatures is still capable of describing the relationship between compressive and tensile strength of old deteriorated concrete, when function parameters are properly determined. Based on statistical theory and the experimental result of this study, a method for predicting long-term tensile strength of concrete is developed and an example is given, which may provide a potential way to estimate long-term concrete strength under real marine environment.

Subcritical Crack Growth and Long-Term Strength in Rock and High-Strength and Ultra Low-Permeability Concrete

2009 ◽  
Vol 58 (6) ◽  
pp. 525-532 ◽  
Author(s):  
Yoshitaka NARA ◽  
Masafumi TAKADA ◽  
Daisuke MORI ◽  
Hitoshi OWADA ◽  
Tetsuro YONEDA ◽  
...  
Keyword(s):  
Crack Growth ◽  
Subcritical Crack Growth ◽  
High Strength ◽  
Low Permeability ◽  
Term Strength

Long-term strength of reinforcing steel 22H2G2АYu in case of corrosion cracking test in boiling nitrate solution

2019 ◽  
pp. 33-39
Author(s):  
N. N. Sergeev ◽  
◽  
S. N. Kutepov ◽  
A. N. Sergeev ◽  
A. G. Kolmakov ◽  
...  
Keyword(s):  
Nitrate Solution ◽  
Corrosion Cracking ◽  
Term Strength ◽  
Reinforcing Steel

scholarly journals The study of long-term durability and bio-colonization of concrete in marine environment

2021 ◽  
pp. 100120
Author(s):  
Marine Georges ◽  
Amel Bourguiba ◽  
Daniel Chateigner ◽  
Nassim Sebaibi ◽  
Mohamed Boutouil
Keyword(s):  
Marine Environment

Long-term strength retrogression of silica-enriched oil well cement: A comprehensive multi-approach analysis

2021 ◽  
Vol 144 ◽  
pp. 106424 ◽  
Author(s):  
Xueyu Pang ◽  
Jiankun Qin ◽  
Lijun Sun ◽  
Ge Zhang ◽  
Honglu Wang
Keyword(s):  
Oil Well ◽  
Term Strength ◽  
Oil Well Cement ◽  
Well Cement
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