Experimental Study on Durability and Mechanical Properties of High Ductile Concrete under Long-Term Sulfate Attack

2022 ◽  
Author(s):  
Jialiang Kou ◽  
Lingling Li ◽  
Junping Shi
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Sulfate Attack

Experimental study on the mechanical properties of grouted rock bolts subjected to sulfate attack and freeze-thaw cycling

2021 ◽  
Vol 291 ◽  
pp. 123391
Author(s):  
Weili Zhang ◽  
Liangqing Wang ◽  
Yuhang Song ◽  
Yuanwen Tan
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Sulfate Attack ◽  
Rock Bolts ◽  
Freeze Thaw ◽  
Grouted Rock Bolts

EXPERIMENTAL STUDY OF LONG-TERM OUTCOMES OF PERINATAL USE OF DRUGS FOR PROGENY HEALTH

2014 ◽  
Vol 4 (1(11)) ◽  
pp. 70-78
Author(s):  
A.G. Reznikov ◽  
N.D. Nosenko
Keyword(s):  
Experimental Study ◽  
Long Term Outcomes

Experimental study on mechanical properties of E-glass fiber reinforced with epoxy composite and compare its properties with hybrid composite

2021 ◽  
Author(s):  
Vishwanath Panwar ◽  
Ankit Jain ◽  
K.V. Pradeep Kumar ◽  
Chetan Thakar ◽  
Sushil Kumar Maurya
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Glass Fiber ◽  
Hybrid Composite ◽  
Epoxy Composite ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

scholarly journals Mechanical Properties of Cement-Treated Soil Mixed with Cellulose Nanofibre

2021 ◽  
Vol 11 (14) ◽  
pp. 6425
Author(s):  
Hidenori Takahashi ◽  
Shinya Omori ◽  
Hideyuki Asada ◽  
Hirofumi Fukawa ◽  
Yusuke Gotoh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Geotechnical Engineering ◽  
Strength Development ◽  
Soft Ground ◽  
Wood Cellulose ◽  
Treated Soil ◽  
Made In ◽  
Cement Treatment

Cellulose nanofibre (CNF), a material composed of ultrafine fibres of wood cellulose fibrillated to nano-order level, is expected to be widely used because of its excellent properties. However, in the field of geotechnical engineering, almost no progress has been made in the development of techniques for using CNFs. The authors have focused on the use of CNF as an additive in cement treatment for soft ground, where cement is added to solidify the ground, because CNF can reduce the problems associated with cement-treated soil. This paper presents the results of a study on the method of mixing CNF, the strength and its variation obtained by adding CNF, and the change in permeability. CNF had the effect of mixing the cement evenly and reducing the variation in the strength of the treated soil. The CNF mixture increased the strength at the initial age but reduced the strength development in the long term. The addition of CNF also increased the flexural strength, although it hardly changed the permeability.

scholarly journals Composite Material of PDMS with Interchangeable Transmittance: Study of Optical, Mechanical Properties and Wettability

2021 ◽  
Vol 5 (4) ◽  
pp. 110
Author(s):  
Flaminio Sales ◽  
Andrews Souza ◽  
Ronaldo Ariati ◽  
Verônica Noronha ◽  
Elder Giovanetti ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Room Temperature ◽  
Casting Process ◽  
Optical Characteristics ◽  
Smart Devices ◽  
Superhydrophobic Coating ◽  
Gravity Casting ◽  
High Flexibility ◽  
Physical And Chemical

Polydimethylsiloxane (PDMS) is a polymer that has attracted the attention of researchers due to its unique properties such as transparency, biocompatibility, high flexibility, and physical and chemical stability. In addition, PDMS modification and combination with other materials can expand its range of applications. For instance, the ability to perform superhydrophobic coating allows for the manufacture of lenses. However, many of these processes are complex and expensive. One of the most promising modifications, which consists of the development of an interchangeable coating, capable of changing its optical characteristics according to some stimuli, has been underexplored. Thus, we report an experimental study of the mechanical and optical properties and wettability of pure PDMS and of two PDMS composites with the addition of 1% paraffin or beeswax using a gravity casting process. The composites’ tensile strength and hardness were lower when compared with pure PDMS. However, the contact angle was increased, reaching the highest values when using the paraffin additive. Additionally, these composites have shown interesting results for the spectrophotometry tests, i.e., the material changed its optical characteristics when heated, going from opaque at room temperature to transparent, with transmittance around 75%, at 70 °C. As a result, these materials have great potential for use in smart devices, such as sensors, due to its ability to change its transparency at high temperatures.

Experimental study on the long-term stability of shale rock wellbore under high hydraulic pressure

2021 ◽  
Vol 14 (3) ◽  
Author(s):  
Baoyun Zhao ◽  
Xiaoping Wang ◽  
Wei Huang ◽  
Tianzhu Huang ◽  
Yang Liu
Keyword(s):  
Experimental Study ◽  
Hydraulic Pressure ◽  
Term Stability ◽  
Long Term Stability ◽  
Shale Rock

scholarly journals High-strength and fibrous capsule–resistant zwitterionic elastomers

2021 ◽  
Vol 7 (1) ◽  
pp. eabc5442
Author(s):  
Dianyu Dong ◽  
Caroline Tsao ◽  
Hsiang-Chieh Hung ◽  
Fanglian Yao ◽  
Chenjue Tang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
High Strength ◽  
Design Principles ◽  
Fibrous Capsule ◽  
High Mechanical Strength ◽  
Capsule Formation ◽  
Locking Mechanism ◽  
Fibrous Capsule Formation

The high mechanical strength and long-term resistance to the fibrous capsule formation are two major challenges for implantable materials. Unfortunately, these two distinct properties do not come together and instead compromise each other. Here, we report a unique class of materials by integrating two weak zwitterionic hydrogels into an elastomer-like high-strength pure zwitterionic hydrogel via a “swelling” and “locking” mechanism. These zwitterionic-elastomeric-networked (ZEN) hydrogels are further shown to efficaciously resist the fibrous capsule formation upon implantation in mice for up to 1 year. Such materials with both high mechanical properties and long-term fibrous capsule resistance have never been achieved before. This work not only demonstrates a class of durable and fibrous capsule–resistant materials but also provides design principles for zwitterionic elastomeric hydrogels.

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