hurricane
发表于 2025-3-25 05:03:40
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让你明白
发表于 2025-3-25 08:04:34
https://doi.org/10.1007/978-3-642-57996-7in bricks are not a source of sulphates, in many types of bricks the presence of these salts are apparent from efflorescence effects.These salts are in a soluble form and should be taken in account. Moreover it is indicated that metallic impurities are easily removed from concrete and may be present
类型
发表于 2025-3-25 13:25:54
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orthopedist
发表于 2025-3-25 19:15:51
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竖琴
发表于 2025-3-25 22:47:23
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stress-test
发表于 2025-3-26 02:38:53
Chemie organischer Stoffe im Bauwesen, concrete debris can compete economically with conventional aggregate in areas where the latter is locally unavailable as well as in areas where large quantities of concrete debris are generated every year so that economies of scale in the processing of these debris can be realized..Concrete produce
Onerous
发表于 2025-3-26 06:37:19
Chemie organischer Stoffe im Bauwesen,nagement Committee of EEC has recognized the necessity of including construction waste in overall planning of waste disposal. A working party on “Demolition, re-use and dismantling of concrete” under the chairmanship of Prof. Hansen has been set up to prepare proposals for joint community action and
SLUMP
发表于 2025-3-26 09:44:02
https://doi.org/10.1007/978-3-322-91527-6Some of the factors that affect the strength, elastic modulus and deformational stability of concrete are discussed and examples are given of their effects. The importance of the cement paste matrix is emphasised as the mechanical characteristics of concrete are controlled largely by this constituent.
检查
发表于 2025-3-26 12:49:58
https://doi.org/10.1007/978-3-642-72183-0Participants were eager to discuss the points underlined by . in his conclusions as possible areas of research:
钉牢
发表于 2025-3-26 17:53:37
Bauchemisch interessante Neuentwicklungen, asked if research had dealt with the effect of adsorbtion on drilling rate with the crack velocity/stress intensity factor k.. The k.-curves had been measured in glasses by . showing that even very brittle materials can have plastic flow.