concrete ballast 中文意思是什麼
concrete ballast
解釋
混凝土壓艙塊-
According to author ' s practical experience accumulated in many years of water project construction, the author gives brief description to some common quality defects in cast - in - site concrete construction, such as honeycomb, ballast - surface, holes, reinforcement emerging, crack, surface unevenness, insufficient strength etc
根據在水利水電工程施工中多年積累的實踐經驗，簡要闡述了現澆混凝土施工中常見的一些質量缺陷，如混凝土出現蜂窩、麻面、孔洞、露筋、裂縫、表面不平整、強度偏低等。 -
Next was an experimental study on modification of stone ballast concrete small hollow block. the influence of polypropylene fiber, expansion agent and both of them on permeability - resistance and both moisture expansion and dry shrinkage of the block were systematically tested. the testing results and theoretical analysis slowed that they all can improve its properties, among which polypropylene fiber can most effectively restrain it ’ s moisture expansion and drying shrinkage ; however, the block doubly blended with polypropylene fiber and expansion agent will be likely to most beneficially improve crack - resistance of wall filled with the block
試驗結果和理論分析表明，單摻聚丙烯纖維、單摻膨脹劑和雙摻聚丙烯纖維與膨脹劑均能改善混凝土空心砌塊的性能，其中，聚丙烯纖維更有利於限制單個砌塊的濕漲干縮，單摻聚丙烯纖維的空心砌塊濕脹干縮的波動性最小;雙摻聚丙烯纖維與膨脹劑對限制石渣砌塊濕脹干縮的效果不理想，但雙摻砌塊將更有利增強于砌塊填充墻的整體抗裂性。 -
If stone ballast block blended with shrinkage - reducing agent, polypropylene fiber and expansion agent can reduce its own shrinkage while can ’ t worsen its own other properties, it is undoubted that modification of stone ballast block is beneficial to prevent crack in wall filled with stone ballast block, because these modification materials can respectively reduce, restrain and compensate shrinkage of concrete
在混凝土砌塊中摻加減縮劑、聚丙烯纖維和膨脹劑等減縮、限縮和補償收縮材料如能降低砌塊的收縮率，且不劣化砌塊的其它性能，則無疑有利於砌塊墻體的開裂防治。首先進行砌塊材料的改性試驗研究。
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