carbonatation造句

• After a number of hours the plaster reacts with the air in a process called carbonatation.
• Up to about 500 癈, the major structural changes are carbonatation and coarsening of pores.
• This carbonatation process will start at the surface, then slowly move deeper and deeper into the concrete.
• A sufficient thickness of concrete cover is thus required in order to slow down the carbonatation process towards the rebar.
• The rate of carbonatation is dependent on the relative humidity of the concrete-a 50 % relative humidity being optimal.
• The carbonatation system is generally matched to the diffusion scheme; juice from RT diffusers being processed by the RT carbonatation.
• The carbonatation system is generally matched to the diffusion scheme; juice from RT diffusers being processed by the RT carbonatation.
• Iron bar surface is KOH, NaOH ) and with calcium hydroxide leading to the carbonatation of the hydrated cement paste.
• This burnt lime is then slaked in sweet water to produce a calcium hydroxide suspension for the precipitation of impurities in raw juice during carbonatation.
• Concrete in buildings that experienced a fire and were left standing for several years shows extensive degree of carbonatation from carbon dioxide which is reabsorbed.
• True fresco is the technique of painting on fresh lime plaster whereby the pigments are fixed by the carbonatation of the lime ( calcium hydroxide ).
• Traditional non-hydraulic hydrated lime only sets through carbonatation when the plaster is kept moist and access of CO 2 from the air is possible.
• One method of testing a structure for carbonatation is to drill a fresh hole in the surface and then treat the cut surface with phenolphthalein indicator solution.
• This is a problem because the first line of defence of all structural elements against carbonatation, chlorides, frost and abrasion, is the cover zone.
• Carbonatation has two effects : it increases mechanical strength of concrete, but it also decreases alkalinity, which is essential for corrosion prevention of the reinforcement steel.
• The site had been cleared of Boot house type ( Henry Boot Construction ) houses in the late 1990s, due to carbonatation problems in their concrete structures.
• In this type of concrete, carbon dioxide is slowly absorbed to convert the Portlandite into insoluble calcium carbonate ( CaCO 3 ), in a process called carbonatation:
• An alternative to this " phosphatation " technique is " carbonatation ", which is similar, but uses carbon dioxide and calcium hydroxide to produce a calcium carbonate precipitate.
• The crystals of raw sugar have a sticky brown coating and either can be used as they are or can be bleached by sulfur dioxide or can be treated in a carbonatation process to produce a whiter product.
• A hydrated lime will produce a material which is not as " fatty " and often, due to lengthy and poor storage, the resulting lime produced by hydrated lime will exhibit longer carbonatation periods as well as lower compressive strengths.