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Processes proceeding during the mechanical activation of sphene (CaTiSiO5) from Khibiny deposit in a mechanical agate mortar and an AGO-3 planetary mill are studied.
      
The possibility of the removal of adsorbed cesium ions from the surface of a hardened cement mortar via the electrokinetic method in the presence of a chelating agent (Trilon B) is studied.
      
The powders are produced from a lead selenide batch heat treated under dynamic vacuum and ground in an agate mortar.
      
Structural changes in diopside, CaMgSi2O6, and wollastonite, CaSiO3, upon prolonged (up to 84 h) grinding in a mechanic agate mortar under environmental conditions were studied.
      
Mathematical relations which make it possible to estimate the effect of errors in determination of pipeline parameters on the error in measurements of the density of a binary mixture with reference to a cement mortar is considered.
      
In this study, the effect of the fineness on the high temperature and sulphate resistances of concrete mortar specimens, produced with ground granulated blast-furnace slag (GBFS) replacing cement, is investigated.
      
The results showed that the CFRCC samples were 5-12 % lighter than the conventional mortar, and that the addition of coir fibers improved the flexural strength of the CFRCC materials.
      
The glass milk is a water suspension of 50% fine silica powder prepared by grinding the crushed waste ultraviolet light tube with a porcelain mortar.
      
The network texture has restrained the movement of polyblend molecules in the cement mortar but is helpful to forming a coherent interface between cement paste and quartz.
      
At the same time, the effects of different curing condition on mortar and concrete expansive and shrinkage performance were studied.
      
In this paper, the rigorous conditions were designed that the mortar bars had been cured at 80°C for 3 years after autoclaved 24 hours at 150°C.
      
The results show that the flexural strength and compressive strength of the mortar and concrete with interface component and fiber gradient distributions are obviously improved.
      
The strengthes of the fiber gradient distributed mortar and concrete (FGDM/C) are higher than those of fiber homogeneously distributed mortar and concrete (FHDM/C).
      
The results show that the higher the replacement of CG is, the lower the compressive strength of cement mortar is.
      
However, the long-term strength of the specimens with 10% CG, especially after being cured for 3 months, approached to that of the plain mortar.
      
Mortar and concrete containing this expansion agent have better shrinkage-compensating and mechanical properties.
      
The raw materials component, production process, technical properties, micro-analysis of mortar made with this expansion agent, mechanism of expansion and research results are described in this article.
      
Results show that ground steel-making slag is a kind of high activity mineral additives and it can raise the longer-age strength of OPC mortar.
      
The expansive experiment of mortar bar and concrete prism was completed.
      
The effect of the deferent rubber content substituted for fine aggregate on the mortar performance was studied.
      
 

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