第1个回答 2007-06-20
Along with sail across ocean the big bridge, sea building to build more and more, the enduring sex problem of the sea work concrete seem to be very seriously, common of examination means decay the circumstance to hard to do the precision to examine to the concrete inner part.This text will adopt to scan the electronic microscope( SEM), X to shoot the line 衍 to shoot the advanced technique of analytical etc. to carry on the tiny view analysis to the internal structure of concrete, to the concrete under the standard appearance, the sea water moderates the sea water jelly to melt a pair of factor function under protect the circumstance for a month, analyze under the condition of different of water turn the outcome;Respectively the analytical chlorine salt, magnesium salt, vitriol, carbonate...etc. decay the concrete the reaction that may take place and decay the mechanism, carry on the point analysis to the born circumstance of the si ash gypsum( THa) and Friedels salt( F'S)s particularly.An experiment will adopt the contrast experiment method, preparing the common concrete( OPC) and leading the spirit concrete( APC) and three ( powder ash from stove, ash of si , the mineral ) concrete( HPC)s to carry on contrasting sex to experiment at the same time, putting forward the concrete that has the high and enduring, the anti- causticity finally.
第2个回答 2007-06-20
Along with sail across ocean big bridge, sea building more and more of build, sea work's durable problem of the concrete seem to be very severity, common of examination means to concrete inner part decay the circumstance hard to do precision examination.This text scan an adoption electronic microscope(SEM), X to shoot line Yan to shoot analysis etc. a forerunner a technique to the concrete inner part the structure carry on a tiny view analysis, to concrete at standard appearance bottom, the sea water moderate sea water jelly to melt a pair of factor function bottom to protect a month of circumstance, analysis at dissimilarity under the condition of water turn an outcome;Respectively analysis the chlorine salt, magnesium salt, vitriol, carbonate...etc. decay concrete possibility occurrence of reaction and decay mechanism, particularly is to the Huo ash gypsum(THa) and the born circumstance of the Friedels salt(F'S) to carry on a point analysis.This time experiment adoption contrast experimental methods, prepare in the meantime common concrete(OPC), lead spirit concrete(APC) and three Chan(powder ash from stove, Huo ash, mineral residue) concrete(HPC)s to carry on contrast experiment, end put forward have Gao durable, anti- causticity of concrete.
第3个回答 2007-06-20
Along with sail across ocean big bridge, sea, the building builds more and more, sea work's enduring sex problem of the concrete seems to be very seriously, common of the examination means is internal to concrete to decay a circumstance to hard to do a precision to examine.This text scans adoption the electronic microscope(SEM), X shoot line develop to shoot analysis etc. the advanced technique carries on tiny view analysis to the concrete internal structure, to the concrete is under the standard appearance, the sea water moderate a sea water jelly to melt a pair of factor functions to descend to protect a circumstance for a month, water which analyzes under the different condition turns an outcome;Analyze chlorine salt, magnesium salt, vitriol, the carbonate possible occurrence for etc. to decay concrete respectively of respond and decay mechanism, it is to the Si ash gypsum(THa) and the born circumstance of the Friedels salt(F'S) to carry on point analysis particularly.This time experiment contrasts adoption experimental methods, prepare common concrete(OPC) and lead annoy in the meantime concrete(APC) and three mix intos(powder ash from stove, Si ash, mineral residue) concrete(HPC) carry on to contrast sex experiment, put forward the concrete which has high and enduring, anti- causticity finally.本回答被提问者采纳
第4个回答 2007-06-20
The big lake workman beton endurance problem seems very grave more and more constructions of great bridge of big lake and at sea structure in the wake of steps , and that the ordinary examination measure adjust internal the beton etchs the situation very hard to complete and accurately examines .
The original shall adopt the well-developed technique such as beam diffraction analysis scanning electron microscope ( SEM ) and X's and so on to carry on microscopic analysis to the beton internal structure , and is living below the standard state to the beton and the sea water neutralization sea water to freeze to thaw twin elements to conserve a moon situation below the action , and analyses to be living the water result below the distinct terms ;
Reaction and corruption mechanism that probably happens when analysing the corruption beton such as chlorine salt , magnesium salt , sulphate and carbonate and so on is separately especially carried on stress analysing to grey plaster ( THa ) and the Friedels salt ( F'S ) formation situation of silicon .
The comparison test means shall be adoptd in this test , and makes up the ordinary beton ( OPC ) moreover , stretchs the gas beton ( APC ) and three to mingle ( coal ash , silicon dust , slag ) eperiment of comparison quality beton ( HPC ) , and finally proposes haveing the high endurance and corrosion resistance beton.
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第5个回答 2007-06-20
With the bridge, marine construction more and more of the construction, marine concrete durability problem is very serious, ordinary means of detection of internal corrosion of the concrete is very difficult to have accurate detection. This paper will be used scanning electron microscopy (SEM), X-ray diffraction analysis, and other advanced technology to the internal structure of concrete micro-analysis of the concrete in the state standards, water and freeze-thaw water-conservation factors under a month and to analyze the different conditions in the hydration products; Analysis of the respective chloride, magnesium, sulphate, carbonate, and other concrete corrosion may occur when the reaction and corrosion mechanism, especially for wollastonite paste (THa) and the Friedels salt (F'S) Generation of focus analysis. The comparative experiment will use experimental methods, and preparation of ordinary concrete (OPC), Bleed concrete (APC) and the three-doped (fly ash, silica fume and slag) Concrete (HPC) for comparative testing, Finally, with high durability, corrosion resistance of concrete.