查询词典 concrete layer

Using the fatigue equation, the fatigue performance of porous concrete and common semi-rigid base materials and cement concrete are compared, the fatigue stress coefficient which is used in the load stress calculation for porous concrete as undersurface of cement concrete pavement and the tensile strength structure coefficient which is used in the flexural stress check for porous concrete as base of asphalt pavement are obtained.

进行室内小梁弯拉疲劳试验，对疲劳试验数据进行分析，得出多孔混凝土不同失效概率下两种形式的双对数疲劳方程，利用疲劳方程，将其疲劳性能与常用半刚性基层材料和水泥混凝土进行比较，还得出了多孔混凝土作为水泥混凝土路面下面层荷载应力计算的疲劳应力系数，和作为沥青路面基层层底弯拉应力验算的抗拉强度结构系数。

Based on the further study of deformation rule of MgO-mixed concrete, the theory of 3-D finite element simulation analysis of MgO-mixed concrete arch dam is discussed in this dissertation combining with the example of YangChun MgO-mixed concrete arch dam. Moreover, the pertinent simulation analysis software is developed by the author and his colleagues. The main contents are as follows.( 1 ) Transformation rules of MgO-mixed concrete are studied. Hyperbola model of MgO-mixed concrete"s autogeny deformation, especially deduce of the model"s parameter and building process of the model are analyzed in detail.

本文结合阳春外掺MgO混凝土拱坝，在深入研究外掺MgO混凝土变形规律的基础上，详细论述了外掺MgO混凝土拱坝三维有限元仿真分析的原理，与相关人员一起研制了有关仿真分析软件，其主要研究内容如下：(1)研究分析了MgO混凝土的变形规律，并重点对MgO混凝土的自生体积变形的双曲线模型，尤其对模型中参数变量的推求及模型的建立过程作了详细分析。

The reliability of analysis result depends largely on the in-house experimental conditions. Unlike the previous analysis that only concerns the sole effect of permeable pressure, this article considers both permeable and confining pressure and deformation characteristics of concrete material under the interaction of them according to the real work state of construction, which may leads to the changing pattern of permeable rate as listed below: permeable rate always reaches its peak with the time process going on, than goes down and remains straight on some certain value; The PR will tend to decline while the confining pressure is increased, and the time taken before the peak will be extended as well; Under the constant permeable pressure and circularly changing confining pressure, the minus-exponential ascend and descend relationship could be applied between the PR and Time axes respectively with crannied and intact concrete samples, and the PR of crannied concrete is far more larger than that of intact concrete. The change pattern of concrete could also be mathematically analogized using the least square method.

室内的实验条件是研究成果可靠性的重要因素，而以往的研究都只考虑了渗透压单一作用，本文根据混凝土结构的实际工作状态，同时考虑了围压与渗透压共同作用下的混凝土材料的渗透性变化特征，得出了混凝土材料在围压作用与渗透压共同作用下的渗透率的变化规律：渗透率都是随时间推移先达到一个峰值，再降低并趋于平稳；渗透率会随围压的增大而减小，并且峰值的到达时间也会随之延长；在渗透压不变，围压升降循环的情况下，有裂缝、无裂缝混凝土的渗透率变化规律是随时间成负指数关系上升、下降，且有裂缝混凝土试件的渗透率远远高于无裂缝混凝土的渗透率，并对混凝土的变化规律运用最小二乘法进行数学拟合。

Test result makes clear, different intensity grade abandons the stuff of second birth wide market that gets after concrete mix up, of the compressive strength of concrete of second birth of different origin of compressive strength; that will reduce second birth concrete significantly all be worth concrete of singler source second birth to reduce, and variance and coefficient of variation increase; to use normal school model to be opposite of compressive strength of concrete of different origin second birth distributing undertook examining, use Monte-Carlo imitate method farther test and verify should distributing the rule.

试验结果表明，不同强度等级废混凝土混和后得到的再生粗集料，将显著降低再生混凝土的抗压强度；不同来源再生混凝土抗压强度的均值较单一来源再生混凝土减小，而方差和变异系数增大；采用正态分布模型对不同来源再生混凝土抗压强度的分布进行了检验，利用Monte-Carlo模拟方法进一步验证了该分布规律。

Firstly, by analyzing existing models of predicting concrete carbonation and its influencing factors, a practical model of predicting the depth of carbonated concrete is proposed in this thesis, which takes the compressive strength of concrete as the main parameter and considers influence of temperature and moisture of environment, construction factors, stress condition and density of CO2 in the environment, and plenty of spot-data has been used to verify the model; By means of regression analysis of the spot-data, the calculating model of uncarbonated remainder is formulated; Considering the randomness of concrete carbonation, the paper put forward a probability analysis method of concrete carbonation span-life.

首先，论文在分析已有混凝土碳化预测模型与影响因素的基础上，建立了以混凝土抗压强度为参数，考虑环境温湿度，施工因素，应力状态及环境CO_2浓度影响的混凝土碳化深度实用模型，并利用大量工程实测数据对模型进行了验证；通过对实际工程检测数据的回归分析，给出了碳化残量的计算公式；考虑到混凝土碳化的随机性，提出了混凝土碳化寿命的概率分析方法。

Mechanized construction of high-grade highway road status, asphalt concrete, cement concrete, RCC, as well as supporting the existence of grass-roots construction machinery and accessories in the focus of questions should consider the issue of the roller compacted asphalt concrete machinery importance; cement concrete slipform paver machine as the leading equipment machines for concrete mixing equipment related to measurement and mixing homogeneity of the importance of indicators; of RCC and grass-roots construction machinery, mixing equipment is still emphasize the measurement accuracy and mixing uniformity; on the grass-roots level paver problem, development and the condition of our country to adapt the automatic leveling of the ground plane; stone processing counterattack crusher used to solve the problem of the ratio of the needle plate.

高等级公路路面机械化施工的现状，沥青砼、水泥砼、碾压砼以及基层施工机械配套存在问题和配套中重点应考虑的问题，沥青砼的碾压机械的重要性；水泥砼滑模摊铺机作为主导设备机对砼搅拌设备中有关计量及搅拌均匀性指标的重要性；对碾压砼和基层施工机械，依然强调搅拌设备的计量准确和搅拌均匀性；对基层摊铺问题，发展与我国国情相适应的自动找平的平地机；石料加工中使用反击式破碎机解决针片状比例的问题。

The durability of concrete structure in general air environment, including concrete carbonization mechanism and influencing factors, steel corrosion mechanism and influences to the structural mechanical performance, cracks of concrete caused by the expansion of corrosion and the relation between width of crack and amount of corrosion, and the life estimation of reinforced concrete structure. At the same time, the paper introduced durability paint for concrete of xichang Cable-stayed bridge.

一般大气环境下普通钢筋混凝土结构的耐久性，包括混凝土碳化机理及影响因素、钢筋锈蚀机理及对结构力学性能影响、混凝土锈胀开裂及裂缝宽度与锈蚀量之间的关系以及钢筋混凝土结构寿命评价等，并利用以上理论对西昌斜拉桥钢筋混凝土塔柱进行了预测分析。

Again, I maintain that we should use the flexural-tensile strain and the vertical shearing stress of the bottom of cover of the joint as the target for the design of the cover structure of asphalt on the old cement concrete. In addition, on the basis of much theoretical analysis, I preliminarily put forward to a designing methods to anchor the old cement concrete road by using dog irons made of iron bars and then covering it using asphalt concrete structure. Finally, through selecting the plan of the cover of the road to be experimented, and making a detailed introduction to the techniques of construction according to the result of theoretical analysis, I know that after anchoring the slabs close to each other with dog irons made of iron, and then cover them using asphalt cement concrete has an obvious effect on preventing and slowing down the reflection cracks in the bituminous concrete skin coat over the old road.

在大量分析的基础上提出了马钉锚固罩面结构中相邻两块水泥混凝土板接缝处的相对水平位移、相对垂直位移、接缝处沥青层底部的弯拉应变和剪应变的计算公式；再次，提出了采用接缝处罩面层底部的弯拉应变、垂直剪应变作为旧水泥混凝土路面上沥青混凝土罩面结构的设计指标，并在大量理论分析的基础上，初步提出了马钉锚固旧水泥混凝土板后沥青混凝土罩面结构的设计方法；最后，根据理论分析的结果，选定试验路的罩面方案，并对其施工工艺进行了详细的介绍，表明采用钢筋马钉锚固相邻混凝土板后，再进行沥青混凝土罩面的方法在防止或减缓罩面层反射裂缝方面具有明显的效果。

Construction of concrete pump is used to enhance the height of 30 1 300M, the thickness of more than 0.5M mass concrete, with savings of manpower, material and time is short, high efficiency, fast and convenient features, concrete pumping concrete on the mobility of higher, the need to control slump at 12-16 cm between the silo slipform request the initial setting of concrete, final setting time control at 2 hours and 20 minutes, 3 hours and 30 minutes or so, stick to prevent mold, in favor of Waterloo or.

混凝土输送泵施工，是用于提升高度30一300M，厚度0.5M以上的大体积混凝土，具有节省人力、物力、时间短、效率高、快捷方便的特点，但泵送混凝土对混凝土的流动性要求较高，坍落度需要控制在12—16厘米之间，筒仓滑模要求混凝土的初凝、终凝时间控制在2小时20分、3小时30分左右，可防止粘模，利于滑升。

One cycle of operation to take Silo body construction, the construction procedure as follows: steel banding to Silo body gantry beams assembled below -→ one-time pouring concrete 700mm high -→ early slide three trips (that is 75mm high)-→ check off the concrete slipform system appropriate degree and working conditions -→ continue pouring concrete 500mm high -→ then slip trip or three -→ pouring concrete to template missing -→ normal sliding each slide or 500mm high -→ stratified cross - lap steel banding -→ pouring concrete 500mm high -→ Waterloo or 500mm high -→ 4 in accordance with the procedure after Silo body pouring until the completion of cycle.

其中筒身施工采取循环作业，其施工程序为：绑扎筒身钢筋至组装好的门架横梁下面—→一次性浇筑混凝土700mm 高—→初滑三个行程（即75mm 高度）—→检查滑出混凝土合适度及滑模系统工作状况—→继续浇筑混凝土500mm 高—→再滑升三个行程—→浇筑混凝土至模板上口—→转入正常滑升，每次滑升500mm 高—→分层交圈绑扎钢筋—→浇筑混凝土500mm 高—→滑升500mm 高—→按后四道程序循环往复直至筒身浇筑完成。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。