凍裂作用 的英文怎麼說
中文拼音 [dònglièzuòyòng]
凍裂作用
英文
frost action-
Following is the factors ideating with the surface of old concrete in different way ( including brushing surface, chiseling surface, cleaving surface ), adherence agent ( including cement slurry, cement sand slurry, cement slurry with the u expansion agent ), the freeze - thaw circulation times and air - entraining. as a result, we found that the roughness influence on the adhesion capability of the new on old concrete to a large degree. the larger rougeness is, the larger the splitting tensile strength on the adhension face is. the kind of adhesion agent is also influence on the adherence capability of new on old concrete. the circulation times of freez - thaw have a large influence on the splitting tensile strength of adherence face of new on old concrete. the analysis of tests give some advices to the practical engineering
主要考察了老混凝土表面不同處理方式（刷毛面，鑿毛面，劈裂面） 、界面粘結劑類型（水泥凈漿，水泥砂漿， u型膨脹劑水泥漿） 、凍融循環次數等對新老混凝土粘結面劈拉強度的影響，以及凍融作用下新混凝土加氣對粘結面劈拉強度的影響。試驗結果表明，粗糙度對新老混凝土粘結性能有重要影響，隨著粘結面粗糙度的增大，粘結面劈拉強度不斷增加；界面粘結劑類型對新老混凝土粘結性能有一定影響，在凍融作用下， u型膨脹劑水泥漿粘結效果不如水泥凈漿和水泥砂漿；凍融循環對粘結面劈拉強度有較大影響，加氣能明顯改善新老混凝土粘結面的抗凍能力。In the first part of this dissertation, theory of fracture mechanics of the frozen soil has been presented. a general strength theory based on fracture mechanics was proposed, and the validity of the theory using in frozen soil was discussed. the fracture toughness values for different kinds of cracks extension were determined, such as the plane strain fracture toughness for mode i cracking ( kic ), fracture toughness for mode cracking of frozen soil and the intersection of frozen soil and concrete
論文第二章為凍土斷裂力學的基本理論，包括斷裂力學在凍土研究中的工程適用性、條件適用性、平面應變斷裂韌度測試的適用條件等，給出了凍土斷裂韌度k _ （ c ） 、 k _ （ c ） 、 -型復合斷裂測試的基本原理及試驗方法，並基於weibull脆性破壞理論推導了凍土三點彎曲試樣k _ （ c ）尺寸效應系數，為後面的工作提供理論基礎。Experimental results of marshall remnant stability test, water susceptibility tensile strength ratio ( tsr ) test and rutting test show that graphite modified ecac possesses of high anti - water damage ability and excellent high - temperature stability, which is expected to apply as new - type pavement
馬歇爾殘留穩定度試驗、凍融劈裂試驗和車轍試驗表明石墨導電瀝青混凝土的抗水損害能力強，高溫穩定性能良好，可作為新型路面使用。Collapses in mengshan area are caused by the weightless rock mass falling down rapidly due to the interaction of gravity and weathering factor of freeze - and - thaw action and raining action in the locate of the developing joints
崩塌是在陡崖或坡度陡峻的斜坡地帶因巖體節理裂隙發育，受凍融、雨水等風化作用和重力作用，造成巖體失穩快速下落的現象。( 5 ) when pgcs were cultured on different feeder layers, the better results were got if pgcs were cultured on sto and mef1 feeder layers, when pgcs were cultured on thawed sto feeders, pef, inactivated pef feeders, 0. 1 % gelatin, we can not get typical eg colonies
（ 5 ）用不同飼養層培養pgc ，實驗結果證明pgc在新鮮製作的sto和mef ~ 1飼養層上，可以得到傳3代以上的eg集落； pgc在鋪有解凍的sto飼養層細胞、 pef或絲裂黴素c處理過的pef 、塗有0 . 1明膠的4孔板上，一直沒有得到典型的eg集落。Ordinary, the ice layer is the frozen coal structure weak link, when the external force achieved ice layer ’ s intensity, the frozen coal cracks
通常凍煤冰層內部作用力是凍煤結構中的薄弱環節，當外力達到冰層的強度時凍煤即崩裂。To keep membranes in wet state, do not immerse them in stale water for long time. water should be changed periodically. avoid mildewing in summer and freezing in winter
部分作用膜儲存時最好經清水浸泡膨脹、逐張曬干后保存、如濕態保存時不宜在死水中長期浸泡，應定期換水，夏秀防止發霉，冬秀防止凍裂。分享友人