نتایج جستجو برای: grout type
تعداد نتایج: 1342561 فیلتر نتایج به سال:
بیمه گران همیشه بابت خسارات بیمه نامه های تحت پوشش خود نگران بوده و روش هایی را جستجو می کنند که بتوانند داده های خسارات گذشته را با هدف اتخاذ یک تصمیم بهینه مدل بندی نمایند. در این پژوهش توزیع های فیزتایپ در مدل بندی داده های خسارات معرفی شده که شامل استنباط آماری مربوطه و استفاده از الگوریتم em در برآورد پارامترهای توزیع است. در پایان امکان استفاده از این توزیع در مدل بندی داده های گروه بندی ...
This article discusses the effects of glass powder (GP) replacements and sodium hydroxide (NaOH) molarity on rheological, fresh, mechanical microstructure characteristics slag-based mechanochemical geopolymer (MG) grout. A conventionally activated grout an ordinary Portland cement (OPC) were also investigated for comparison. Four replacement ratios used (0%, 10%, 20% 30% by total precursor weig...
Despite the increasing number of studies on geopolymer-based materials, a lack information still prevails concerning use geopolymer materials for consolidation and conservation built heritage. Since introduction term “geopolymer” by Davidovits, several have pointed out geopolymers as potential replacement traditional binders, mainly due to their advantages associated with mechanical properties ...
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
Even though steel bar is a conventional reinforcement in soil stabilization systems, the problem of corrosion of steel may lead to vast damages especially in aggressive environments. In the past decades, Fiber Reinforced Polymer (FRP) materials have offered an effective solution to overcome the corrosion problem. Despite numerous bond stress-displacement models for reinforcements in concrete, t...
Abstract Grout is a material usually applied to enhance the mechanical properties of structural masonry. As such, demand for grout has been growing parallel Without guidelines mixing design, these products are often prepared on-site based on same concepts used preparing ordinary Portland cement-based concretes. Several still need be investigated and understood due this mixing-design approach, c...
Excessive deformation of tunnel lining structures can be identified as a common problem in Eastern China soft ground. Grouting treatment is an effective and method to actively mitigate excessive cross-sectional rings soils. However, grouting operations would introduce localized heavy disturbance the surrounding ground around nozzles, causing large-deformational soil movement. The occurrence lar...
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