Based on freeze thaw cycle indirect tensile test, a further study of moisture susceptibility for some familiar graded HMA mixtures is carried out through modification of immersion conditions, and a new method of...
本文以劈裂试验为基础，通过对浸水条件的改进，进一步深入地研究了几种常见沥青混合料的水稳定性，提出了以真空循环饱水条件下的沸煮劈裂试验的残留稳定度来评价沥青混合料的水稳定性。
The main results are:①Image growth arithmetic can distinguish aggregrate particles from HMA section, and it makes calculation the indexes of HMA image easy.
对于集料在沥青混合料内部的分布特征的研究，本文开发沥青混合料均匀性分析系统来研究集料分布的均匀性，形成了以偏心率指标和面积级配曲线方差分析为主要手段的研究方法。
The result shows that WMA with and without modifier can reduce energy consumption 28.7% and 22.9% respectively comparing with the corresponding HMA.
计算结果表明：改性和未改性的温拌沥青混合料可分别比相应的热拌沥青混合料节约能耗28.7%和22.9%。
Genotoxicants of different structures and mode of actions, e. g. 2- Acetylaminofluorene, were used to validate the HMA-DDRT. Cyclophosphamide, Mitomycin C and other 12 anti-neoplastic drugs, 2 flavone derivatives SIPI 549, SIPI-644 and 2 other chemicals were also tested using HMA-DDRT.
以2-乙酰基氨基芴等15种不同结构类型和作用机制的已知诱变剂进行方法学验证，并检测了环磷酰胺、丝裂霉素C等14种抗肿瘤药、黄酮类药物SIPI-549、SIPI-644和2种其它化合物的体内遗传毒性。
It has the same performance as the Hot Mix Asphalt and even better than it. It can be mixed and rolled at a lower temperature than the HMA.
HMA的高温生产条件不仅会导致沥青老化，同时还会消耗大量的能源，而且在生产和施工的过程中还会排放出大量的废气和粉尘，影响周围的环境质量和施工人员的身体健康，这与当前我们所倡导的绿色和可持续发展的精神是不相符的。
The test results show that the Poisson`s ratio of hot mix asphalt remains stable and can be a constant at low temperature or small load, and becomes the function of temperature and stress at high temperature of large load.
试验分析结果表明，低温或小荷载作用下，HMA泊松比在小范围内波动，可视为一个常数；而高温或大荷载作用下，随着温度的升高或荷载比的增大，HMA泊松比有增大趋势，并成为温度和应力状态的函数。
The field date indicated that the ultra-thin layer HMA is an efficiently outlooking maintainment style in cold area.
试验路检测结果表明，超薄磨耗层是寒冷地区高速公路大修工程很有推广前途的一种养护罩面形式。
The results show that:(1) after MA for 20h, single phase bcc nanocrystalline supersaturate solid solution formed in Fe84Nb7B9 and Fe80Ti8B12 alloys; the thermal stability of nanocrystalline microstructure in Fe80Ti8B12 alloy was improved significantly than that in Fe84Nb7B9 alloy, and the decomposition temperature of supersaturate solid solution decreased in Fe80Ti8B12 alloy.(2) under 30MPa/900℃/0.5h hot-press sintering conditions, the relative density of Fe84Nb7B9 and Fe80Ti8B12 bulk alloys were 96.7% and 95.5%, respectively. Compared with Fe84Nb7B9 alloy (muti-phase microstructure), Fe80Ti8B12 alloy was composed of superfine crystalline (50~200nm) of single phase α-Fe; (3) the magnetic properties of Fe80Ti8B12 bulk alloy σ(subscript s=198.6emu/g, H=54.6Oe were more excellent than that of Fe84Nb7B9 bulk alloy σ(subscript s=162.9emu/g, H=105.1G, it was related to the different phases formed during hot-press sintering and the grain size of nanocrystalline powder.
结果表明：(1)20hMA后，Fe84Nb7B9和Fe80Ti8B12均形成了单相bcc纳米晶过饱和固溶体，相对前者，后者纳米晶组织热稳定性明显提高，过饱和固溶体相分解温度略有降低；(2)在30MPa/900℃／0.5h热压条件下，Fe84Nb7B9和Fe80Ti8B12块体合金相对密度分别为96.7%和95.5%，相对前者，后者由超细晶(50~200nm)单相α-Fe组成；(3)Fe80Ti8B12块体合金软磁性能σ(下标 s=198.6emu/g，H＝54.6Oe明显高於Fe84Nb7B9块体合金σ(下标 s=162.9emu/g，H＝105.1Oe，此与纳米晶粉末在热压烧结过程中所形成相的种类和晶粒尺寸大小有关。
Totally 60 semi-circular bending specimens cored from superpave gyratory compactor with three groups of notch depths are tested at the temperature of-10 and 20℃ The experimental results reveal good repeatability in EAM characterization. The tensile strength ratio of SCB to the indirect tensile test is at a range of 1.4 to 1.7, and the ultimate strength of EAM is exponentially dependent on the notch depths. At the test temperatures, the critical J-integral value of EAM is much higher than that of hot mix asphalt with thermoplastic asphalt binder. The response mode of EAM changes from ductile mode to brittle mode and the fracture energy increases 30% when temperature decreases from 20 to-10℃, while its critical J-integral value decreases only 15%.
结果表明，环氧沥青混合料的半圆弯曲试验结果复现性好；由非切口试件的半圆弯曲试验与标准间接拉伸试验所测得的环氧沥青混合料的抗拉强度，其比值在1.4~1.7之间，且SCB抗拉强度与切缝深度指数相关；在20℃与－10℃试验条件下，环氧沥青混合料具有比热塑性HMA高得多的临界J-积只分值；当温度由20℃降至－10℃时，环氧沥青混合料的响应模式由延性变为脆性，断裂能增加30%，而临界J-积分值下降15%。
Test result shows that the destroy process of compound beam is similar with that of actual bridge deck, the structure with waterproof and cohesive course has a fatigue life, which is 8 times longer than that of the structure without the course, the addition of fiber in the HMA can increase at least 20% of its fatigue life, the combination structure of stone matrix asphalt and fiber reinforced asphalt concrete is the best pavement structure in the test.2 tabs, 11 figs, 9 refs.
由试验结果可知，复合梁破坏模式与桥梁铺装实际破坏形式一致，相同的铺装结构在加入防水粘结层后寿命可增长8倍，铺装材料加入纤维可使疲劳寿命增长20%以上；SMA和纤维加筋的AC组合是本次试验中的最优结构。
In our country, to get stronger base and reduce the thickness of HMA layers, semi-rigid base is widely used in highways.
为了获得较高的承载能力及减小沥青面层厚度，我国高等级公路多采用半刚性基层。
Methods By means of the modified heteroduplex mobility assay (HMA) and the routine DNA sequence analysis, the subtypes of 14 blood samples with HIV - 1 sera - positive were determined and analyzed and compared.
方法采用改良的异源双链泳动法（HMA）与DNA序列分析法对14份HIV-1抗体阳性者样本进行亚型测定、分析和比较。
The Application of rosin ester in hot melt adhesive (HMA) and the compare between rosin ester and petroleum resin were summarized.
概括了松香酯在热熔胶（HMA）中的应用情况，并将其与石油树脂作了比较；
Methods We used heteroduplex mobility analysis (HMA) and sequencing to detect mixed infection.
方法使用异双体动态分析法和测序检测混合感染。
Analysis and prevention treatment of the premixing pumping concrete construction crack Contrastive Study of Performance between WMA and HMA
预拌泵送混凝土施工裂缝的分析和预防及处理温拌沥青混合料配合比设计及与热拌沥青混合料的性能对比研究
Aging of Asphalt from Warm Mix Asphalt Mixture During Construction Contrastive Study of Performance between WMA and HMA
温拌沥青混合料中沥青在施工阶段的老化程度温拌沥青混合料配合比设计及与热拌沥青混合料的性能对比研究
Analysis of effecting on densification characteristics of sak warm mix asphalt Design Method of GAP-graded HMA
SAK温拌沥青混合料压实性能分析间断密级配沥青混合料配合比设计方法
Research on Change Law of Temperature Field of the HMA Compacting
热拌沥青混合料施工压实过程中温度场变化规律研究
The present status of domestic and oversea hot melt adhesives (HMA) for book bindings was summarized in this paper.
概述了国内外热熔胶在书籍装订方面的现状。
Application of TLA Modified Asphalt in Project of PCC for HMA in Quzhou Section of No.320 State Road
TLA改性沥青在320国道衢州段白改黑工程中的应用