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Found on data of accelerated life test, the relationship between outward disease of structural concrete and holistic deterioration of building was analysed. The results indicated that: outward diseases of structural concrete, such as abrasion, scour erosion, and peeling, carbonization etc, are not hypostatic breakage for holistic building, so could not be regarded as the key points of deterioration identification at building. Deterioration appraisement should be focused on detections of engineering indices relating to structural inbeing quality and analyses of multifarious remainder relating to bearing capacity. Only in this way, deterioration degree of structural concrete and efficacious repair indices could be factually incarnated. Ground on testing multifarious bearing capacities, deterioration identification of concrete buildings was founded, and remedy principles corresponding to inbeing deterioration indices were put forward.

Effective unit weight, inner friction angle and cohesion are the main engineering indices of rock-soil mass anti-slide. Deviant leakage brings about obvious decrease of effective unit weight, inner friction angle and cohesion under combined action of thrust, buoyancy, and lubrication. So as to slip in unstable rock-soil mass. Deviant leakage schleps out weensy particles, induces seepage failure, so geotechnical engineering would collapse. Therefore the reasonable anti-leakage in unstable mountain is one of the key technologies that urgently to be solved in geotechnical engineering. Combined with the typical landslide geology, several groundwork anti-leakage were studied for earth-rock dam, correlative processes and technologies were discussed, and construction parameters were designed. The abnormal situations that may occur in construction were analysed, and preparative schemes were put forward. The results had been validated in practical engineering.

Resources of memory are frequently used times without number for reducing cost of control system. Rewriting in memory would cause occasional hardware conflict when especial data are inputted or are calculated, thereby system faults even accidents are elicited. Origin of occasional malfunction was analysed in automatic control system, necessity of program storage separate from data storage was discussed, and the notion was put forward that resource allocation of memory should be compatible with the system function. So dead halt owing to codes cover each other could be avoided, and reliability of measurement or control system could be effectively improved.

Reinforcement using alkali substance produces plentiful calcium hydroxide, and calcium hydroxide has engendered long-term demolishment in laterite embankment. Particle contents were analysed and significant ions were tested at demolished laterite in embankment, and chemical reactions of acidic laterite with calcium hydroxide were canvassed. Accelerated life tests were performed, changes of basilic engineering indexes and content changes of significant ions were tested in laterite fore-and-aft demolished. Mechanism of laterite embankment scathed by calcium hydroxide was explored. Acid-alkali reaction is rootstock of benefit descending and life shortening, and is important inducement of permeability exacerbating in laterite embankment.

Water of reservoirs shows acidity in laterite regions, and laterite engineering is chronically demolished by chloride ions in water. Ground on mechanism analysis, accelerated life tests were implemented. After permeability test, changes of grain-size-gradation were analysed at laterite remainder, microstructures of soil sample were observed, and concentration changes of iron ion as well as aluminum ion were affirmed in transudatory liquid. The harvests indicated that: sesquioxides (viscous substances in laterite) are consumed by chloride ions in water, and microstructures of laterite are demolished. Products from chemical reaction are dissolved by water and are schlepped off by seepage, so wispy leakage channels are created in engineering. The eroding of chloride ions has clearly debased security of laterite engineering.