桂林电子科技大学2016年考研试题912土木工程材料(2016-A)
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桂林电子科技大学2016年硕士研究生入学考试复试试卷考试科目代码:304考试科目名称:工业工程请注意:答案必须写在答题纸上(写在试卷上无效)。
一、判断题(每小题1分,10小题共10分,正确打√,错误打×)1.美国工程师泰勒(F.W.Taylor)于1911年发表了《科学管理原理》一书,标志着工业工程学科的诞生。
()2.1917年,日本成立了工业工程师协会,从此工业工程在社会上引起重视。
()3.工业工程是一门技术与管理相结合的交叉学科。
()4.日本开发出的准时化(Just In Time)生产方式及其看板管理(Card Control)等在国际上具有先进性和重大影响。
()5.方法研究中的“方法”泛指所有工作方法。
()6.拟定改进方案时,研究者首先应该想到的是“简化”,因为尽可能简化是方法研究追求的目标。
()7.流程程序分析是以生产过程中部分作业流程为对象,通过对整个流程中的加工、检验、搬运、储存、等待活动作详细的观察与记录,并研究改进作业流程的方法。
()8.用秒表测定法制定标准时间时,需要由工作抽样提供工时宽放率数据。
()9.随着科技进步,机器系统自动化程度越来越高,人在系统中的作用逐步减弱。
()10.ISO是国际化的产品质量检验标准。
()二、选择题(每小题1.5分,20小题共30分)1.工业工程是一门()。
A)专业工程学科B)管理学科C)跨学科的边缘学科D)企业管理2.工业工程的首要任务是对()系统的设计。
A)供应B)销售C)管理D)生产3.IE的核心是降低成本、提高质量和()A)产量B)生产率C)管理水平D)成品率4.以下关于工业工程的理解,不正确的是:()A)称为工程是表示只能做分析,而不能做实务设计B)本身即是一门应用性的学术领域16.人机工程学的研究对象为()。
A)人-机系统B)机器系统C)人-机-环境系统D)控制系统17.人和机器如果能一起工作,则在某一固定时间里能获得最低的()A)产品产量B)产品质量C)生产成本D)材料消耗18.设施规划与设计的对象应该是()A)生产工艺B)整个系统C)主要生产设备D)产品19.PDCA循环是指P:计划,D:执行,C:检查,A:()。
桂林电子科技大学2016年研究生统一入学考试试题科目代码:211 科目名称:翻译硕士英语请注意:答案必须写在答题纸上(写在试题上无效)。
I. Vocabulary and Grammar (30 marks)Multiple Choice QuestionsDirections: Beneath each sentence there are four words or phrases marked A, B, C and D. Choose the answer that best fits the blank or best paraphrases the underlined word or words to complete each statement. Mark your answers on your answer sheet.1. He knows that Iran -- which has not started a war in modern history -- poses no_______ military threat to the United States.A. conceivableB. imaginableC. considerableD. forceful2. Many Chinese are fascinated by the US and it remains a top _______ for China’s young people to study.A. opportunityB. destinationC. targetD. route3. Late in the morning, we stopped where some other boats_______ in the shadows of the cliffs and jumped in for a swim.A. were anchoredB. were placedC. were attachedD. were stopped4. The way they _______ on their instruments always had melody laced in with these great guitar parts.A. constructB. writeC. workD. compose5. The girl's aunt told the police station that her niece is constantly _______ by the incident and "won't sleep by herself."A. scaredB. worriedC. shockedD. haunted6. Citizens are _______ by their government to denounce criminals, though 98.5 per cent ofcriminal investigations are never solved.A. exhortedB. exhaustedC. exertedD. excused7. We have also not _______ the subtleties of mutant screens or details of phenotypes as thesetopics have been covered in detail by a large number of excellent reviews.A. put onB. written onC. doneD. dwelt on8. Still, Canada has moved over the years _______ savings from taxation – in order to encourageinvestment – while taxing consumption.A. to spendB. to spareC. to expendD. to extend9. Due to the fact that universities can not enroll all the candidates, _______ to university iscompetitive.A.admission B.affidavit C.admiration D.allegiance10. The villagers were _______ by the news of the criminal's release from the prison.A.indignant B.puzzled C.overjoyed D.elusive11. Each individual expresses his opinion in the group by where he stands when a lot of people _______ together in a chat.A.squeeze B.stick C.pad D.cluster12. But later my hair began to fall _______, and my belly turned to water.A.off B. out C. through D. away13. At last this intermezzo _______, and I found myself in front of the gigantic City Hall.A. came to an endB. came to the endC. came to endD. came to ending14. Since he had never been in such a situation before, his apprehension was understandable.In this sentence “apprehension” means _______.A. eagernessB. fearC. hesitationD. excitement15. He tarried to tell his hostess how much he had enjoyed the party. In this sentence “tarried”means _______.A. neglectedB. attemptedC. lingeredD. struggled16. During the owners’ absence, the lawn became dreadfully _______.A. sloppyB. slipshodC. slovenlyD. unkempt17. She is looking for a more _______ place to live in.A. congenialB. congressionalC. congaingD. cognizant18. The patient read about car racing and experienced _______ thrills.A. repulsiveB. elusiveC. vicariousD. covetous19. Can you vouch for Fred’s integrity?A. withdrawB. denyC. believeD. attest to20. The newspaper tabulation will show how each precinct voted.A. chartB. tabooC. tactD. ratio21. The landlord threw them out because they hadn’t paid their rent for six months.A. evictedB. dischargedC. demolishedD. dismissed22. His apparel showed him to be a successful man.A. clothingB. confidenceC. answerD. manner23. Your mood seems very meditative this evening.A. gleefulB. thoughtfulC. desperateD. stern24. John was forced to make an extemporaneous speech.A. sharpB. foolishC. offhandD. critical25.He survey presents a useful classification of statistical data.A. breakupB. breakthroughC. breakdownD. breakaway26. You may be athletic, but a monkey is more agile.A. cleverB. nimbleC. stupidD. quick27. The picture is tilted; please straighten it.A. highB. levelC. crookedD. adjustable28. If it goes on to _______ its responsibilities, then the British government must act immediatelyin its place.A. disciplineB. abdicateC. bashD. challenge29. They tell the people in their community not to store apples in the refrigerator because freshfruit like apples is _______.A. perishableB. vanishingC. exquisiteD. fickle30. When she called me a thief, I decided to sue her for _______.A. ridiculeB. scandalC. slanderD. encumberII. Reading Comprehension (40 marks)Multiple Choice QuestionsDirections: In this section, there are reading passages followed by multiple-choice questions. Read the passages and then mark your answers on your answer sheet.Passage AThe purpose of the home was to rehabilitate patients as far as possible, so that they could face the harsh realities of life outside hospital. Most of them not only suffered from some form of nervous disease but had other handicaps as well. (There were those who were deaf, those who were partially blind, and those who were partially paralyzed.) For most of them, the hospital had been their refuge for some time and the idea of being rehabilitated was somewhat frightening. They doubted their own capabilities, and were nervous of the effort which would be required from them.The home contains within a research unit which is mainly concerned with overcoming the technical problems which arise from the patient’s physical disabilities. Full rehabilitation involves a need for a patient to be as independent as possible physically. It is in the research center that all types of electronic equipment are pioneered, much of it exceedingly delicate and complex. One of the things I found astonishing as I watched what was going on in the workshop was the ease with which the patients became accustomed to the equipment. This of course has the dual effect of making them physically independent and giving then the psychological satisfaction of having mastered a difficult problem. And this extra confidence is, of course, a further step towards rehabilitation.While I was there, I was fortunate enough to be able to talk to a couple of patients (or rather ex-patients) who had been fully rehabilitated and who had come back for the weekend to visit their friends. One, a former physical education teacher who suffered from paralysis from the waist down, was now teaching general studies in a primary school. After his accident, he told me, he had had a complete nervous breakdown and had indeed tried to commit suicide several times. “But when I got here, I realized that there were still some things I could do, and that there were people worse off than me who were out in the world doing them,” he said.” Yes, I expect I shall get depressions again. You can’t completely cure that kind of thing. But they’ll pull me out of it, at least I know that now.” I asked him if he felt that everyone in the home could be rehabilitated. “Well, of course, one can’t really. There are some people in here with really terrible problems. But I should say that about 70% of them will be fully rehabilitated by this time next year.” And that is a fantastic claim, from my observation of what is going on, may well be substantiated.Multiple Choice Questions (10 marks)1. The “home” in this passage refers to _______.A. the hospitalB. the place away from realityC. the research centerD. the refuge camp2. The word “rehabilitate” (Line 1, Para. 1) probably means _______.A. overcome physical disabilitiesB. train to get used to a new situationC. restore to relatively normal lifeD. cure nervous diseases3. The research unit aims to help people to _______.A. gain confidence about their abilitiesB. become physically independentC. solve difficult problemsD. make complex electronic equipment4. Which of the following is true about the teacher mentioned in this passage?A. He was aware that he was more fortunate than others.B. He was cured of his paralysis.C. He thought highly of the rehabilitation place.D. He had a traffic accident and almost committed suicide.5. The author thinks that the teacher’s claim of the percentage of full rehabilitation is _______.A. pessimisticB. groundlessC. underestimatedD. optimisticPassage BIf you intend using humor in your talk to make people smile, you must know how to identify shared experiences and problems. Your humor must be relevant to the audience and should help to show them that you are one of them or that you understand their situation and are in sympathy with their point of view. Depending on whom you are addressing, the problems will be different. If you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses.Here is an example, which I heard at a nurses' convention, of a story which works well because the audience all shared the same view of doctors. A man arrives in heaven and is being shown around by St. Peter. He sees wonderful accommodations, beautiful gardens, sunny weather, and so on. Everyone is very peaceful, polite and friendly until, waiting in a line for lunch, the new arrival is suddenly pushed aside by a man in a white coat, who rushes to the head of the line, grabs his food and stomps over to a table by himself. “Who is that?” the new arrival asked St. Peter. “Oh, that's God,” came the reply, “but sometimes he thinks he's a doctor.”If you are part of the group which you are addressing, you will be in a position to know the experiences and problems which are common to all of you and it'll be appropriate for you to make a passing remark about the inedible canteen food or the chairman's notorious bad taste in ties. With other audiences you mustn't attempt to cut in with humor as they will resent an outsider making disparaging remarks about their canteen or their chairman. You will be on safer ground if you stick to scapegoats like the Post Office or the telephone system.If you feel awkward being humorous, you must practice so that it becomes more natural. Include a few casual and apparently off-the-cuff remarks which you can deliver in a relaxed and unforced manner. Often it's the delivery which causes the audience to smile, so speak slowly and remember that a raised eyebrow or an unbelieving look may help to show that you are making a light-hearted remark.Look for the humor. It often comes from the unexpected. A twist on a familiar quote “If at first you don't succeed, give up” or a play on words or on a situation. Search for exaggeration and understatements. Look at your talk and pick out a few words or sentences which you can turn about and inject with humor.Multiple Choice Questions (10 marks)6. To make your humor work, you should _______.A. take advantage of different kinds of audienceB. make fun of the disorganized peopleC. address different problems to different peopleD. show sympathy for your listeners7. The joke about doctors implies that, in the eyes of nurses, they are _______.A. impolite to new arrivalsB. very conscious of their godlike roleC. entitled to some privilegesD. very busy even during lunch hours8. It can be inferred from the text that public services _______.A. have benefited many people.B. are the focus of public attention.C. are an inappropriate subject for humor.D. have often been the laughing stock.9. To achieve the desired result, humorous stories should be delivered _______.A. in well-worded languageB. as awkwardly as possibleC. in exaggerated statementsD. as casually as possible10. The best title for the text may be _______.A. Use Humor EffectivelyB. Various Kinds of HumorC. Add Humor to SpeechD. Different Humor StrategiesPassage CThe fox really exasperated them both. As soon as they had let the fowls out, in the early summer mornings, they had to take their guns and keep guard; and then again as soon as evening began to mellow, they must go once more. And he was so sly. He slid along in the deep grass; he was difficult as a serpent to see. And he seemed to circumvent the girls deliberately. Once or twice March had caught sight of the white tip of his brush, or the ruddy shadow of him in the deep grass, and she had let fire at him. But he made no account of this. The trees on the wood edge were a darkish, brownish green in the full light—for it was the end of August. Beyond, the naked, copper like shafts and limbs of the pine trees shone in the air. Nearer the rough grass, with its long, brownish stalks all agleam, was full of light. The fowls were round about—the ducks were still swimming on the pond under the pine trees. March looked at it all, saw it all, and did not see it. She heard Banford speaking to the fowls in the distance—and she did not hear. What was she thinking about? Heaven knows. Her consciousness was, as it were, held back. She lowered her eyes, and suddenly saw the fox. He was looking up at her. His chin was pressed down, and his eyes were looking up. They met her eyes. And he knew her. She was spellbound—she knew he knew her. So he looked into her eyes, and her soul failed her. He knew her, he has not daunted. She struggled; confusedly she came to herself, and saw him making off, with slow leaps over some fallen boughs, slow, impudent jumps. Then he glanced over his shoulder, and ran smoothly away. She saw his brush held smooth like a feather; she saw his white buttocks twinkle. And he was gone, softly, soft as the wind.She put her gun to her shoulder, but even then pursed her mouth, knowing it was nonsense to pretend to fire. So she began to walk slowly after him, in the direction he had gone, slowly and pertinaciously. She expected to find him. In her heart she was determined to find him. What she would do when she saw him again she did not consider. But she was determined to find him. So she walked abstractedly about on the edge of the wood, with wide, vivid dark eyes, and a faint flush in her cheeks. She did not think. In strange mindlessness she walked hither and thither... As soon as supper was over, she rose again to go out, without saying why. She took her gun again and went to look for the fox. For he had lifted his eyes upon her, his knowing look seemed to have entered her brain. She did not so much think of him: she was possessed by him. She saw his dark, shrewd, unabashed eye looking into her, knowing her. She felt him invisibly master her spirit. Sheknew the way he lowered his chin as he looked up, she knew his muzzle, the golden brown, and the grayish white. And again she saw him glance over his shoulder at her, half inviting, half contemptuous and cunning. So she went, with her great startled eyes glowing, her gun under her arm, along the wood edge. Meanwhile the night fell, and a great moon rose above the pine trees…Multiple Choice Questions (10 marks)11. At the beginning of the story, the fox seems to the all EXCEPT _______.A. cunningB. fierceC. defiantD. annoying12. As the story proceeds, March begins to feel under the spell of _______.A. the lightB. the treesC. the nightD. the fox13. Gradually March seems to be in a state of _______.A. blanknessB. imaginationC. sadnessD. excitement14. At the end of the story, there seems to be a sense of ____ between March and the fox.A. detachmentB. angerC. intimacyD. conflict15. The passage creates an overall impression of _______.A. mysteryB. horrorC. livelinessD. contemptPassage DIn every known human society the male's needs for achievement can be recognized. In a great number of human societies men's sureness of their sex role is tied up with their right, or ability, to practice some activity that women are not allowed to practice. Their maleness in fact has to be underwritten by preventing women from entering some field or performing some feat.This is the conclusion of the anthropologist Margaret Mead about the way in which the roles of men and women in society should be distinguished.If talk and print are considered it would seem that the formal emancipation of women is far from complete. There is a flow of publications about the continuing domestic bondage of women and about the complicated system of defenses which men have thrown up around their hitherto accepted advantages, taking sometimes the obvious form of exclusion from types of occupation and sociable groupings, and sometimes the more subtle form of automatic doubt of the seriousness of women's pretensions to the level of intellect and resolution that men, it is supposed, bring to the business of running the world.There are a good many objective pieces of evidence for the erosion of men's status. In the first place, there is the widespread postwar phenomenon of the woman Prime Minister, in India, Sri Lanka and Israel.Secondly, there is the very large increase in the number of women who work, especially married women and mothers of children. More diffusely there are the increasingly numerous convergences between male and female behavior: the approximation to identical styles in dress and coiffure, the sharing of domestic tasks, and the admission of women to all sorts of hitherto exclusively male leisure-time activities.Everyone carries round with him a fairly definite idea of the primitive or natural conditions of human life. It is acquired more by the study of humorous cartoons than of archaeology, but that does not matter since it is not significant as theory but only as an expression of inwardly felt expectations of people's sense of what is fundamentally proper in the differentiation between the roles of the two sexes. In this rudimentary natural society men go out to hunt and fish and to fight off the tribe next door while women keep the fire going. Amorous initiative is firmly reserved to the man, who sets about courtship with a club.Multiple Choice Questions (10 marks)16. The phrase “men's sureness of their sex role” in the first paragraph suggests that they _______.A. are confident in their ability to charm womenB. take the initiative in courtshipC. have a clear idea of what is considered “manly”D. tend to be more immoral than women are17. The third paragraph does NOT claim that men _______.A. prevent women from taking up certain professionsB. secretly admire women's intellect and resolutionC. doubt whether women really mean to succeed in businessD. forbid women to join certain clubs and societies18. The third paragraph _______.A. generally agrees with the first paragraphB. has no connection with the first paragraphC. repeats the argument of the second paragraphD. contradicts the last paragraph19. At the end of the last paragraph the author uses humorous exaggeration in order to _______.A. show that men are stronger than womenB. carry further the ideas of the earliest paragraphsC. support the first sentence of the same paragraphD. disown the ideas he is expressing20. The usual idea of the cave man in the last paragraph _______.A. is based on the study of archaeologyB. illustrates how people expect men to behaveC. is dismissed by the author as an irrelevant jokeD. proves that the man, not woman, should be the wooerIII. Writing (30 marks)Directions: In many countries children are engaged in some kind of paid work. Some people regard this as completely wrong, while others consider it as valuable work experience, important for learning and taking responsibility.What are your opinions on this?Give reasons for your answer and include any relevant examples from your own knowledge or experience.Write an essay of about 400 words on the above topic entitled:________________________________________on the answer sheet.。
桂林电子科技大学
2016年硕士研究生统一入学考试试题
科目代码: 912 科目名称: 土木工程材料
请注意:答案必须写在答题纸上(写在试题上无效)。
答题纸请注明页码与总页数。
一、名词解释(20分,每题4分)
1、泥块含量
2、磨光值
3、钢材的疲劳强度
4、水泥混凝土
5、终凝
二、填空题(20分,每空1分)
1、沥青的三大指标为、和,表示沥青感温性的指标为、针入度粘度指标PVN等。
2、乳化沥青的组成有沥青、、和稳定剂。
3、我国粘稠沥青的牌号是按划分的,测试仪器名称为,测试条件为:的温度、的荷重、的下沉时间。
5、按矿料级配组成特点,将沥青混合料分为悬浮密实结构、
和结构。
6、在评定沥青与粗集料粘附性的试验中根据沥青混合料的最大粒径决定,对于大于13.2mm的粗集料采用,小于13.2mm采用。
7、钢材按照冶炼时脱氧的程度可分为沸腾钢、、、。
9、硅酸盐水泥熟料的主要矿物成分为,硅酸三钙、硅酸二钙,铝算三钙和,它们的简式为:C3S、C2S、C3A和。
三、选择题(40分,每小题2分)
1、石料的抗压强度和以下哪些因素相关()
A 岩石的矿物组成
B 加载速度
C 试样的干燥状态
D 实验温度
2、以下实验方法可以用来评价石料的抗冻性的是:()
A 洛杉矶磨耗实验
B 冻融劈裂实验
C 摆式摩擦仪
D 坚固性实验
3、下列哪些指标可以用来表征石料的强度()
A 压碎值
B 磨光值
C 磨耗值D冲击值
4、影响沥青老化的因素()
A 温度
B 光
C 氧
D 水
5、以下()不是沥青所具有的特点。
A、具有良好的憎水性
B、具有良好的粘结性
C、具有较大的塑性变形
D、具有较高的抗压强度
6、以下()不是按原油加工方法分类得到的沥青。
A、直馏沥青
B、氧化沥青
C、乳化沥青
D、溶剂沥青
7、下列材料可以用作改性剂的是()
A SBS
B PE
C EVA
D 橡胶粉、
8、下列选项可视为乳化沥青的优点的是?()
A 可冷态施工,节约能源,减少环境污染;
B 常温下具有较好的流动性,能保证洒布的均匀性;
C采用乳化沥青,扩展了沥青路面的类型,如稀浆封层;
D可延长施工季节,乳化沥青施工低温雨季影响较少。
?
9、随着砂率的增加,水泥混凝土的坍落度将会()
A、增大
B、减小
C、不变
D、先增加后减小
10、下列关于水在水泥混凝土中的作用的描述正确的是()
A供水泥的水化反应
B 赋予混凝土的和易性
C使混凝土中产生孔隙,对抗渗透性、强度和耐久性不利
D 节约水泥用量
11、下列材料属于水泥混凝土外加剂的是()
A 减水剂
B 矿渣
C 缓凝剂
D 粉煤灰
12、水泥混凝土的和易性包括:()
A流动性B捣实性C粘聚性D保水性
13、下列关于水泥混凝土砂率的说法正确的是:()
A 砂率是指砂占水泥混凝土质量比率;
B 当水灰比和单位用水量一定时,存在合理砂率(最优砂率);
C当水灰比和单位用水量一定时,拌和物坍落度先随砂率增加而增大,达到最大值后,又随砂率增加而减小;
D当水灰比和单位用水量一定时,拌和物坍落度先随砂率增加而减小,达到最小值后,又随砂率增加而增大;
14、下列关于碎石和卵石对水泥混凝土性能影响说法正确的是()
A 针片状的颗粒比等径形状的颗粒更不利于集料的滑动,因此,前者不利于混凝土拌合物的流动性
B表面光滑且呈等径形状的颗粒比粗糙表面且有棱角的颗粒更利于集料的滑动,而且,前者的表面积小于后者
C在水泥浆用量相同时,前者拌制的砼拌合物坍落度大于后者;
D当坍落度或维勃稠度相同时,前者拌制的砼拌合物所需用水量小于后者。
15、下列哪些条件是水泥混凝土碱-集料反应发生的必要条件()
A 水泥中碱含量高;
B 集料中含有活性二氧化硅成分;
C 有水的存在;
D 水泥中CaO含量偏高;
16、粉煤灰硅酸盐水泥的代号是()。
A P.O
B P.S
C P.P
D P.F
17、水泥石的组成有:()
A 固相
B 气相
C 液相
D 只有固相
18、下列结构属于路面的是()。
A 上面层
B 下面层
C 基层
D 土基
19、下列沥青混合料类型属于骨架密实结构的是()
A AC13
B SMA10
C SUP20
D AM20
20、以下实验方法可以用来评价石料的耐磨性的是:()
A 洛杉矶磨耗实验
B 冻融劈裂实验
C 摆式摩擦仪
D 车辙实验
四、判断题(10分,每小题1分)
1、孔隙率是指石料孔隙体积占石料总体积(包括开口孔隙和闭口孔隙体积)的百分率。
()
2、吸水率指常温、常压条件下石料最大吸水质量是干燥试样质量的百分率。
()
3、水泥混凝土用集料的粗细界限尺寸为4.75mm。
()
4、90号沥青比70号沥青软。
()
5、石油沥青中,石蜡含量越丰富,沥青路用性能越好。
()
6、沥青针入度试验的标准温度是15℃,延度试验的标准温度25℃。
()
7、沥青混合料用集料粗细界限尺寸为2.36mm。
()
8、沥青混合料的级配越细越好()。
9、为了降低过火火石灰的危害,需要将其在水中陈伏15d。
()
10、使用引气剂可以有效的提高水泥混凝土的抗冻性。
()
五、简答题(30分)
1、石料真实密度、表观密度、毛体积密度和堆积密度的区别。
(6分)
2、根据矿料级配曲线的形状,有以下几种不同级配形式:(6分)
3、与普通沥青相比,改性沥青有哪些优点? (6分)
4、改性沥青生产工艺?(6分)
5、什么是新拌水泥混凝土的分层离析,危害是什么?(6分)
六、计算分析题(30分)
1、根据下列材料使用图解法确定矿质混合料的配合比。
(15分)
各档集料筛分试验结果(通过率,%)
筛孔尺寸(mm)
设计级配范围通过率(%)
A B C D
26.5 100 100 100 100 100
19 95 100 100 100 95-100
16 58 100 100 100 75-90
13.2 40 85 100 100 62-80
9.5 23 60 98 100 52-72
4.75 10 40 80 100 38-58
2.36 4 23 46 100 28-46
1.18 - 10 33 100 20-34
0.6 - 5 19 97 15-27
0.3 - - 11 94 10-20
0.15 - - - 92 6-14
0.075 - - - 70.5 4-8
2、普通水泥混凝土配合比设计:根据下列材料设计水泥混凝土初步配合比(15分) (1)组成材料
普通硅酸盐水泥32.5级,实测28d 抗压强度为36.8Mpa ,密度为3100kg/cm 3,砂率为32%,砂表观密度2650kg/cm 3,碎石表观密度2700kg/cm 3。
(2)设计要求
混凝土强度等级C30,要求强度保证率95%,强度标准差3.0Mpa ,单位用水量选取175kg/cm 3。
(3)设计所需部分公式及参数
,0a ce cu a b ce
f W
C f f ααα⋅=+⋅⋅,0, 1.645cu cu k f f σ
=+0.46,0.07
a b αα==。