The longevity of grouting has a significant effect on the safe and sustainable operation of many engineering projects. A 500-day experiment was carried out to study the long-term mechanical behavior of nano silica sol grouting. The nano silica sol was activated with different proportions of a NaCl catalyst and cured under fluctuating temperature and humidity conditions. The mechanical parameter...

To know where given amounts of blood might be, we need to know the potential vascular space and what the distribution among various sized vessels is. Methyl inethaerylate was injected via the cannulated aorta into 4 rats, and vascular casts made. Polymerization caused 15 per cent shrinkage. The casts were separated into 3 compartments: 150 /x. and smaller, 150 to 600 u.., and 600 n. and larger....

BACKGROUND A large proportion of the plastic surgery literature is dedicated to the breast. It is one of the most common topics in our specialty, yet it is unclear which articles have been the most influential. The purpose of this study was to identify the top 100 most-cited articles on breast in the plastic surgery literature and examine the characteristics of each individual article. METHOD...

The crack resistance of face slab concretes to various shrinkages is crucial for the structural integrity and normal operation concrete-faced rockfill dams (CFRDs). In this work, effects fly ash with four dosages (i.e., 10%, 20%, 30% 40%) on drying shrinkage, autogenous shrinkage cracking concrete were studied. Besides, difference in behavior due addition was revealed from viewpoint pore struct...

High early age concrete temperatures can lead to many problems such as an increased rate of cement hydration, well moisture loss from fresh which ultimately the occurrence plastic shrinkage cracking. Concrete is also batched and cast at various ambient greatly influences temperature development after placement. There a need understand influence on cracking concrete. This study investigated over...

Soil is a material consisting of mineral grains bonded to one another. itself has various types. One them clay. Clay soil microscopic particles that come from weathering rocks. The water content in clay tends be high so it low bearing capacity. In addition, also shrinkage. Therefore, the management soils must handled properly. method used Gradation Sieve, Liquid Limit, and Plastic Limit. These ...

Cement-based materials, especially those with low water-cement ratios, often experience premature cracking due to plastic shrinkage in the early curing stages. In this study, development mechanism of early-age cement paste, and crack control effect recycled paste powder on was quantitatively investigated using non-contacting two-dimensional digital image technology. The influence different repl...

Shrinkage behavior of a geopolymer cement paste prepared from pumice-type natural pozzolan was studiedby changing parameters of chemical composition including SiO2/Na2O molar ratio of activator and total molar ratiosof Na2O/Al2O3, and H2O/Al2O3. For investigating the effect of curing conditions on shrinkage, hydrothermal curingwas also applied. The obtained results clearly revealed the governin...

The purpose of this study is to evaluate the long-term vertical deformations of segmented pre-tensioned concrete bridges by a new approach. It provides a practical and reliable method for calculating the amount of long-term deformation based on creep and shrinkage in segmented prestress bridges. There are various relationships for estimating the creep and shrinkage of concrete. The analytical r...