poor concrete 中文意思是什麼
poor concrete
解釋
劣質混凝土-
The temperature of surface concrete varies with environmental temperature, but the conductibility of inner concrete is very poor. as a result, a quick decrease of environmental temperature will lead to large temperature gradient and then tensile stress develop soon in the thick direction, which will probably occur on the entire cross - section
混凝土表面溫度隨外界溫度波動而波動，但內部的導溫性能很差，所以在外界溫度驟降時將引起很大的溫度梯度，從而在厚度方向上拉應力發展很快，這極易引起全斷面拉應力發生。 -
Cast - in - place piles with expanded branches or plates based on common concrete bored piles are a new type of piles foundation which have the specialty of high vertically bearing capacity and have been marked both economic and social benefits. especially in the resist draw load, it indicates a broader application scope. however, because of the poor application of cast - in - place piles in the practices, almost all the experiments are based on modeling experiments
擠擴支盤混凝土灌注樁是近年來工程界有較強生命力的新樁型，該樁型是採用仿生學的方法在原有等截面混凝土灌注樁的基礎上研發成功的，其顯著的特點就是具有較高的單方混凝土承載能力，具有良好的社會與經濟效益。 -
The results show that the damages to the appearance of concrete structures exposed to atmosphere, including honeycombing, cracking along rebar, rebar corrosion, and concrete delamination, are quite serious, that the poor quality of concrete construction, the insufficient thickness of local concrete cover, and the rebar corrosion expansion and dilatancy induced by carbonization of concrete cover are the main causes, and that the main form of damages to the overflow structure is the abrasion resulted from water scouring
結果表明，水閘的水上（大氣中）混凝土結構外觀破損十分明顯，露石露砂、順筋裂縫、鋼筋銹蝕、混凝土破損剝落等已十分嚴重；引起破壞的主要原因是混凝土施工質量較差，局部保護層厚度不足，混凝土保護層碳化引起鋼筋銹蝕脹裂，而水流沖刷磨蝕是水閘過流結構破壞的主要形式。 -
Abstract : the cause of underwater concrete reinforcing cage up - floating accident is improper operation, such as loose - placement of reinforcing cage, fast - drawing of conduct pipe, improper embedded depth of conduct pipe ; and the poor quality of concrete, for example, the slump, sand percentage, adhesiveness and initial setting time don " t meet requirement
文摘:水下混凝土澆注鋼筋籠上浮事故的原因是操作不當，如鋼筋籠固定不牢、提升導管過猛、導管埋深不當等，以及混凝土品質差，如坍落度、含砂率、粘聚性、初凝時間等不合要求。 -
The poor gas anti - permeability and carbonation resistance of recycled concrete can be offset by mineral additions
通過加入礦物摻和料，則再生混凝土的抗氣滲性和抗碳化性能均可得到改善。 -
The cause of underwater concrete reinforcing cage up - floating accident is improper operation, such as loose - placement of reinforcing cage, fast - drawing of conduct pipe, improper embedded depth of conduct pipe ; and the poor quality of concrete, for example, the slump, sand percentage, adhesiveness and initial setting time don " t meet requirement
水下混凝土澆注鋼筋籠上浮事故的原因是操作不當，如鋼筋籠固定不牢、提升導管過猛、導管埋深不當等，以及混凝土品質差，如坍落度、含砂率、粘聚性、初凝時間等不合要求。 -
Lwac is becoming one of the important trends in the development of modern concrete. to solve the problems such as poor workability, large shrinkage value and crack easily of lwac, on the basis of systematic experiments, the author establishes lwac workability evaluation system and advances the testing method of pumping performance of lwac ; the control technology of discrete of lwac is introduced through analyzing structure formation process and establishing the mathematic model ; based on studying the strength source of lwac and the function mechanism of artificial additive, this paper not only confirms some major factors which affect concrete strength but explores the preparation technology route of high strength lwac ; the different effects of several fibers in lwac have been studied, and the fiber is introduced in pumping lwac to improve its crack - proof performance
本文針對輕集料混凝土工作性能差、收縮變形大、易於開裂等問題，根據大量實驗建立了高強輕集料混凝土工作性能的評價體系，提出了高強輕集料混凝土可泵性的測試方法；通過分析輕集料混凝土的結構形成過程，建立了輕集料混凝土拌和物物料運動的數學模型，提出了防止輕集料混凝土分層離析的技術措施；通過對輕集料混凝土強度來源和礦物摻合料的作用機理的深入研究，確定了影響輕集料混凝土強度因素的主次關系，提出了配製高強輕集料混凝土的技術路線；研究了纖維在輕集料混凝土中的增強增韌、減少收縮的作用機理。 -
Poor maintenance of buildings, in particular the older ones, have resulted in a myriad of building problems such as structural deterioration, concrete spalling, defective drainage and defects in fire safety provisions posing various hazards. the safety of both the occupants and the public are at stake
樓宇特別是舊樓維修欠佳會引致種種問題，例如結構退化石屎剝落排水系統出現問題及消防安全設施欠妥等，令居民及公眾的安全均備受威脅。 -
But it, s on the other hand in foreign countries, hi view of this, a me 1 hod of design of cement concrete pavement based on the poor concrete base was proposed after calculating and comparing with different methods. it adopts the merits and discards the weaknesses of each technique both in theory and in experience. and it will offer a good reference to the construction of cement conorete pavement in future
針對目前國內水泥混凝土路面設計方法側重於理論分析，而國外水泥混凝土路面設計方法側重於實踐經驗的情況，本文分別採用國內外多種水泥混凝土路面及加鋪層設計方法進行計算和對比，充分吸收各種設計方法的理論和經驗，取長補短，互為補充，從而提高了適合以貧混凝土為基層的水泥混凝土路面面板厚度的設計方法，為今後水泥混凝土路面的建設提供了有益的參考。 -
In this part, it demonstrates with sufficient argumenls in the aspects of material choice for the surface course, base course style, road drainage, etc. in theory it solves the troubles in the weak surface course, the weak base, the poor road drainage, etc. the thesis also debates on the exploration of constructive technique on the method of design of the cement concrete pavement based on the poor concrete base
本文首先分析了宣大高速公路交通組成，介紹了我國幾個水泥混凝土路面建設大省的經驗，總結了國內外水泥混凝土路面的研究成果，從面層選材、基層類型與排水等方面都作了詳細論證，從理論上解決了面板薄、基礎弱、排水差等問題。本文對貧混凝土基層水泥混凝土路面的設計方法也進行了有益的探索。 -
Analysis on concrete failure caused by poor aggregate and the solution thereof
巖性不良造成混凝土事故的分析與防治 -
The poor workability of low - strength concrete compounded by iso new - standard cement
新標準水泥配製低強度混凝土的和易性特點 -
In this paper, the best reinforcement scheme, which was found by nerve network and genetic algorithm from serval reinforcement schemes, was applied to strengthen a prestressed concrete continuous rigid fame bridge with many quanlity faults, such as excess fall deflection of the main span deck > serious web slop crack existing between main pier abutment and one fourth span, and very poor mud jacking quanlity in the prestressing tendon tubs
本文針對某預應力混凝土連續剛構橋所存在的實際問題：如主橋橋面下撓度過大；主墩和四分之一跨徑處均存在較嚴重的腹板斜裂縫；預應力管道壓漿質量較差等。提出了幾種加固方案，並用神經網路和遺傳演算法進一步優化出了較佳的加固方案，進行了加固前後效果對比分析。 -
Later, through the help of the society for community organization, we went to places like cold weather shelters for released prisoners and drug addicts, and night quarters for the single and poor, and also visited people hiding in empty trucks on the street and behind concrete benches in a football stadium, to extend master s love and concern to these people, who are often neglected by society
接著透過香港社區組織協會的安排前往釋囚和吸毒者避寒中心，以及單身人士和吸毒者晚間借宿的單身人士宿舍。最後再到訪一些天撟底貨車尾和球場看臺的流浪漢，讓師父的愛與關懷惠及這些常被社會所遺忘的人。 -
Reinforced concrete drilled filling pile is the widely employed bridge foundation in langfang city, by the statistics of bridge foundation now, about 80 % bridges have this foundation form. however, the construction quality is poor
鋼筋混凝土鉆孔灌注樁在我市是應用范圍最廣的橋梁基礎形式，通過對既有橋梁基礎調查，鉆孔灌注樁約占所有橋梁的80左右，但是樁基的工程質量卻令人擔憂。 -
The hollow concrete has been filled in the interface between abutment and approach embankment. it is successful to solve the problem of poor compaction near the abutment because of restricted access. it is also very useful to drainage of the embankment
本文還對大孔隙混凝土這一材料進行試驗分析，提出了臺背一定范圍內採用大孔隙混凝土填築，可以解決臺背一定范圍內的土體不易壓實和臺背排水等問題。 -
In our country, most of bridges were built in 1960s or 1970s, which were based on that time traffic discharge and development planning, so design criterion of these bridges were very lower. in addition, it was inevitable to bring about cracks > concrete rupture, steel rust ^ honeycomb and water proof layer failure, because some established bridges were built by poor construction and maintenance during the course of operating period. all above mentioned lead to durability and bearing capacity could n ' t gain to design standard
由於我國很多橋梁建於上個世紀六、七十年代，基於當時的車流量和各方面的發展規劃，橋梁設計等級普遍偏低；另外，某些既有橋梁由於施工質量差和運營期間維護不到位，不可避免地會產生裂縫、混凝土破損、鋼筋銹蝕、蜂窩及防水層失效等缺陷，從而導致耐久性及承載力達不到設計要求。
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