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双语推荐：抗压强度

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通过玻化微珠保温混凝土立方体抗压强度与棱柱体轴心抗压强度正交试验,研究了试件的破坏形态,分析了水灰比、水泥用量等因素对混凝土受压强度影响的主次顺序,确定了抗压强度最优配比方案,建立了混凝土立方体抗压强度与轴心抗压强度关系式。
Based on the orthogonal experiments of compressive strength and axial compressive strength of cube speci-mens of glazed hollow bead insulation concrete, the failure modes of the concrete specimens are studied. The influencing order of the factors such as water-cement ratio, cement content etc. on the compressive strength of the concrete is ana-lyzed and discussed, the optimum mix proportion of concrete is determined. In addition, the relationship between the com-pressive strength and the axial compressive strength of the concrete is put forward.

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砂浆的抗压强度不仅取决于砂浆的配合比,而且与砂浆成型时底模材料的类型及其含水率有关。砌筑烧结页岩砖和陶粒混凝土砌块时,砂浆稠度和墙体材料含水率对砂浆抗压强度的影响较小,砂浆的抗压强度比钢质底模时的抗压强度高。砌筑加气混凝土砌块时,砂浆稠度和加气混凝土含水率相互匹配时能够获得更高的抗压强度;砂浆稠度小于80mm,则会导致砂浆抗压强度显著降低,比采用钢质底模时的抗压强度低得多。
The compressive strength of mortar is not only decided by mixture ratio, but also linked with the type and moisture content of bottom mold materials. The consistency of mortar and moisture content of wall materials have little impact on the compressive strength of mortar,and the compressive strength of mortar is higher than the one formed by the steel bottom mold when the mortar is used to lay the sintered shale brick and ceramic concrete block. The consistency of mortar and moisture content of aerated concrete block matched with each other will promote the compressive strength of mor-tar. When the consistency of mortar is less than 80 mm, the compressive strength of mortar decreases significantly, even much lower than that formed by the steel bottom mold.

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水泥抗压强度的测定过程有成型、养护、破型三个主要环节。各环节的试验条件不同,将直接影响抗压强度的测定结果。研究了水泥试件成型过程中流动度、试件尺寸、表面状态等试验条件对试件抗压强度测定结果的影响。结果表明：在一定范围内水灰比与抗压强度呈正相关关系,即水灰比越大,其流动度越好,抗压强度越高,当超过这个范围后,随着水灰比的增大,抗压强度逐渐减小;随着试件尺寸逐渐变大,抗压强度依次降低;试模涂油量多少不同,导致试件表面状态存在差异,涂油量过多或过少都会使抗压强度的测定结果偏低。
Three main aspects of molding, conservation and breaking - type were involved in the testing about compressive strength of cement sample. Different experimental conditions directly influenced the results of compressive strength test. Effects of experimental conditions such as, fluidity, dimension and surface on cement sample compressive-strength in molding process were investigated. The results showed that water cement ratio had a significant linear correlation with compressive strength within a certain range. The bigger the water cement ratio, the better the fluidity and the higher compressive strength. Beyond the range of water cement ratio, compressive strength gradually decreased with the increase of water cement ratio, and remarkably decreased with increasing the sample block size. In addition, the fluctuation of compressive strength can also be caused by the difference of specimen surface with oil coated to varying degrees, which more or less oil would reduce cement com

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采用常温、自然环境养护条件,对不同龄期的ECC进行了立方体抗压强度的试验研究,研究了纤维掺量、粉煤灰掺量、水灰比对抗压强度的影响。试验结果表明,国产纤维掺入后,降低了ECC的抗压强度,而进口纤维掺量和种类对ECC的28d立方体抗压强度影响较小;ECC水灰比越小,抗压强度越大,与水胶比没有直接关系;减水剂掺量增加可以提高ECC的28d立方体抗压强度。当粉煤灰掺量是水泥用量的3.5倍时,ECC的抗压强度随着龄期的延长有增长的趋势,小于3.5倍时,28d以后立方体抗压强度几乎不再增长,甚至有所降低。
The influences of the contents of fiber and fly ash, water-cement ratio on the cube compressive strength of ECC (Engineered Cementitious Composites) at different ages are studied under the condition of the room temperature and natural environment curing. The results show that the content and type of imported fiber have less effect on the 28d cube compressive strength of ECC;and the compressive strength of ECC can reduce by adding domestic fiber. Furthermore, the water-cement ratio is smaller, the greater the compressive strength, but the compressive strength of ECC doesn’t depend on the water/binder ratio. In addition, 28d cube compressive strength of ECC increases with increasing the content of wa-ter reducing agent or the ages, but the 28d cube compressive strength has almost no growth, even lower, when the fly ash content is less than 3.5 times that of the cement.

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通过对不同开口位置与瓦楞纸箱抗压强度的关系进行试验研究，得出抗压强度的变化趋势。瓦楞纸箱的开孔位置在原点附近对瓦楞纸箱抗压强度的影响较小；当打孔位置越偏离原点位置越远，打孔对瓦楞纸箱的抗压强度的影响越大。为进一步研究瓦楞纸箱抗压强度奠定了基础，对瓦楞纸箱的设计起到一定参考作用。
The relation between compressive strength of corrugated carton and punch position by experi-ment,find out the tendency of compressive strength .The results showd punch position near the original point ,it can have the minimum influence on compressive strength;when punching position deviates from original point , it can have the maximum influence on compressive strength .The research laid the foundation for the compres-sive strength of corrugated carton and guide and optimize the reference of the corrugated carton .

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设计温度跟踪养护系统来模拟实际结构中混凝土所经历的温度历程，通过测试在标准养护条件20℃、恒温50℃和变温养护条件下不同强度等级的粉煤灰混凝土早龄期抗压强度的值，分析温度历程对粉煤灰混凝土早龄期抗压强度的影响。根据混凝土早龄期抗压强度的两个主要影响因素：温度和龄期，引入等效龄期理论建立了粉煤灰混凝土早龄期抗压强度的计算模型，并分析了模型参数。实际结构中的粉煤灰混凝土抗压强度可以通过测定温度场，利用计算模型进行相应龄期的抗压强度计算。研究结果表明，粉煤灰混凝土抗压强度计算模型能够较准确计算结构中粉煤灰混凝土的抗压强度，从而有效指导粉煤灰混凝土的工程应用。
Temperature tracking system is designed to simulate the actual curing concrete structure tem-perature history experienced .By the test standard curing conditions at 20℃, 50℃constant temperature and variable temperature curing conditions , early age compressive strength of different strength levels fly ash concrete is measured .According to the compressive strength of concrete at early age of the two main factors:temperature and age , the calculation model of compressive strength of fly ash concrete is estab-lished and analyze the model parameters with introduction of equivalent age theory .The compressive strength of fly ash concrete structures is predicted by measuring temperature field with computational mod -els.The results show that the compressive strength of fly ash concrete calculation model can accurately calculate the compressive strength of fly ash concrete structures , which can effectively guide the engineer-ing application of fly ash concrete .

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通过不同PVA纤维体积率在3d、7d、14d、28d、56d、90d及120d龄期的立方体抗压强度试验,得到纤维体积率和龄期对PVA纤维增强水泥基复合材料立方体抗压强度变化规律的影响并建立了预测模型。结果表明,PVA纤维的掺入不能增加立方体的抗压强度,但可以提高抗压强度前期的增长速率,增强前期强度,弥补了粉煤灰的掺入导致PVA-FRCC立方体抗压强度前期不足的缺陷。并且,PVA纤维具有阻裂作用。龄期影响着抗压强度的增长速率在整个过程中的变化。所建立的PVA纤维增强水泥基复合材料立方体抗压强度预测模型,拟合优度较好,误差较小,并具有收敛性,符合PVA纤维增强水泥基复合材料抗压强度的发展规律。
The compressive strengths of PVA fiber reinforced cement-based composites (PVA- FRCC) cube speci-mens with different fiber volume rate in the ages of 3d, 7d, 14d, 28d, 56d, 90d and 120d are carried out to study the influ-ence law of fiber volume rate and ages on the compressive strength of the specimens, and the prediction models are estab-lished. The results show that the addition of PVA fiber can’t improve the compressive strengths of the PVA - FRCC cube specimens, but it can improve the growth rate of compressive strengths of the PVA - FRCC cube specimens in the early stage, meanwhile, adding fly ash can make up for the compressive strength deficiency of the PVA- FRCC cube specimens in the early stage. In addition, PVA fiber has the crack resistance effect. Ages affect growth rate changes of compressive strengths of the PVA - FRCC cube specimens during the whole process. The established model has goodness of fit, small errors and convergence, and the results from forecast

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通过对LVL木纤维复合材料进行温度为20~225℃下的静态抗压测试,研究了其抗压力学性能随温度的变化。结果表明,随着温度的增加,LVL木纤维复合材料的抗压强度、抗压弹性模量均有显著下降。当温度升至225℃时,LVL木纤维复合材料的抗压强度、抗压弹性模量分别为室温20℃的22.3%、22.2%。根据回归分析,提出了LVL木纤维复合材料顺纹抗压强度与温度的关系模型,该模型计算的剩余顺纹抗压强度与实验结果吻合较好。
The influence of temperature,in a range from 20 to 225 ℃,on the compression properties of LVL wood composite specimens was determined by static compression test.The result indicated that the compression strength and modulus of elasticity of LVL wood composite specimens decreased significantly with increasing temperature.Compression strength and modulus of elasticity at 225 ℃ compared to room temperature 20 ℃ was respectively 22.3% and 22.2%.A statistical regression-based model was developed and evaluated for predicted the strength loss of LVL composite wood as a function of thermal exposure temperature.The predicted theoreti-cal results consistently matched the observed values.

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保温砌模轻质混凝土空心砌块混合生土复合墙体结构是由聚苯乙烯颗粒(EPS)混合土为内芯、轻质陶粒混凝土砌块为外模组成的一种新型复合砌块砌体结构形式,具有保温、抗震和整体好的特性,非常适合村镇低层建筑。考虑不同的内芯材料强度和不同的砌筑砂浆强度,对9组复合砌块砌体抗压试件进行试验研究,分析内芯强度和砂浆强度对复合砌块砌体抗压强度的影响。试验结果表明:内芯材料强度对复合砌体抗压强度贡献最大,影响显著;砂浆强度对复合砌体抗压强度影响较小;空心砌块砌体的抗压强度明显低于复合砌块砌体的抗压强度。
The composite masonry of thermal-insulating lightweight concrete hollow block is a new type of structure with composite polystyrene ( EPS) soil as its inner core and the lightweight ceramsite concrete block as its external mould, because it makes the heat preservation and anti-seismic and integrity as a whole , suitable for buildings in village and town .Considering the different strength of filling materials and different strength of masonry mortar , compressive strength of 9 group specimens of composite block masonry was tested , analyzed the effects of different inner core strength and different mortar strength on the compressive strength of composite block masonry .The test results show that the inner core strength has the largest contribution to the compressive strength of composite masonry , whose influence is significant; mortar strength has weak effect on compressive strength of composite masonry; the compressive strength of hollow block masonry is markedly lower than that of c

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通过对高压旋喷桩芯样展开电阻率和抗压强度测试试验,研究电阻率与抗压强度的对应关系.测试结果表明,电阻率与抗压强度总体上存在线性对应关系,抗压强度越大,电阻率值越大,利用此规律可以将电阻率测试法应用于高压旋喷桩的质量检测,达到无损检测的目的.
According to the electrical resistivity test and compression test of soil-cement of high pressure jet grouting pile, the corresponding relationship between electrical resistivity and compression strength is investigated. The test result shows that the electrical resistivity is of linear relationship with compression strength. The electrical resistivity increase when the compression strength increase. In order to reach to nondestructive examination, the electrical resistivity test can be applied to the quality test of high pressure jet grouting pile by using the research result.

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