y浅论粉煤灰加气混凝土砌块墙体防裂.doc

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1、the partys fine style, carry forward the traditional Chinese virtues, practicing the Socialist core values, vigorously carry forward the spirit of Jiao Yulu, Hongqi Canal spirit and spirit of persistence, honesty in politics, strict statesman, stick to the spiritual heights of the Communists. Four t

2、o devotion, as, do play a role in qualifying. Official Communist duty. To fulfill the partys purpose, maintain for the people themselves, and dedication, devotion, maintain pioneer, pioneering and enterprising spirit, active at the well-off extra practice, make contributions. The incentive function

3、of party organizations at all levels should give full play to advanced models, establish a representative, advanced and typical of the times, and guide the broad masses of party members to emulate. In honor of the 95 anniversary of founding as an opportunity to award in recognition of a number of ou

4、tstanding party members advanced grass-roots party organizations, outstanding party workers, and put the pioneer trees. Third, the reform efforts for example, be sure to change into. Learning to teachEducation in order to solve the problem, if it does not solve the problem, it will form, goes throug

5、h the motions. To strengthen the consciousness of problems and insisted on problem-oriented, problem-solving learning education for traction, truly deep investigation into change, modification. A checked swing. Learning education programme for party-building in our city actually proposed to focus on

6、 solution of fuzzy ideals and beliefs waver, consciousness, purpose of the party weak sense, honesty and self-discipline awareness is not strong, depressed, six issues of ethical misconduct study contents specific programmes for all party members and leading cadres above the county level shall focus

7、 on further refinement to the problems. Specific to every party member and every cadre, also requires a combination of actual and controlled, focused and really put yourself in, people see things, see, with their own specific problems to learn Constitution Party rules, series, address, so precision

8、to find the problem, laying a solid foundation for further corrective action. B to make change. For check put of problem, through established rectification Taiwan account, and take special supervision, and on account PIN, approach, insisted do side learn side modified, and that know that modified, w

9、hile focused on put two learn a do learning education rectification with grasp party of mass line education practice activities and three strict three real topic education problem rectification combined up, consolidation expanded has made of rectification results, strongly corrected for officer not

10、for, and Chi and endless corrected four wind, and regulation masses side of abuses, ensure work advance more powerful, and problem solution more completely. Third, we must consolidate our achievements. For more public, some party members who focus on the outstanding issues, combining concentrated浅论粉

11、煤灰加气混凝土砌块墙体防裂【论文关键词】:砌块墙体;防裂技术【论文摘要】:文章提出了解决墙体裂缝的各种技术措施。长期以来,人们一直在寻求治理砌体裂缝的实用技术,并根据裂缝的性质及影响因素,提出了一些预防和控制裂缝的措施。并从防止裂缝的概念上,形成了"防"、"抗"、"放"的构想。这些措施、构想有些已运用到工程实践中,也收到了些效果。但目前总的情况是,加气砼砌块的墙体裂缝仍较严重。对此,我们在调查研究、查阅资料、工程试点的基础上,提出了以下解决粉煤灰加气砼砌块非承重墙体裂缝的工程技术。1.砌块材料(1)砌块块材应有产品合格证、产品性能检测

12、报告、主要性能的进场复验报告。(2)砌块强度等级必须符合规定,各项性能指标、外观质量、块型尺寸允许偏差应符合国家标准蒸压加气混凝土砌块(GBT11968-1997)的要求。(3)对进入施工现场的砌块材料应按产品标准进行质量验收。对质量不合格或产品等级不符合要求的,不得用于砌体工程。不得将有裂缝的砌块面砌于外墙外表面。2.砌筑、抹面砂浆砂浆所用材料的品种和性能应符合设计要求外,还应符合以下要求:(1)粉煤灰加气砼砌块砌筑墙体时,需要使用配套的专用砌筑砂浆与抹石砂浆。国家建材行业标准蒸压加气混凝土用砌筑砂浆与抹面砂浆(JC890-2001)是根据砌块对砂浆的功能要求制定的。施工时,砌筑砂浆、抹面砂

13、桨的干密度、抗压强度,抗折强度、粘结强度、收缩性能等指标必须符合标准要求;砂浆的原材料,如水泥、石灰膏、砂、掺合料、外加剂的性能指标,均应符合相应技术标准的规定。(2)砌筑砂浆采用普通砂浆时,对砂浆的技术要求应符合国家标准砌体工程施工质量验收规范(GB50203-2002)的规定。施工时,砌筑砂浆应通过试配确定配合比。砂浆试块强度验收时,其强度合格标准必须符合规定。砂浆的原材料还应符合相应标准的规定。(3)抹面砂浆采用普通砂浆时,对抹面砂浆的技术要求,应符合国家标准建筑装饰装修工程质量验收规范(GB50210-2001)及住宅装饰装修工程施工规范(GB50327-2001)的规定。对砂浆的原材

14、料、配合比及强度检验,还应符合相应标准规定。3.框架结构非承重墙体施工粉煤灰加气砼砌块的砌体工程施工。除应符合规范GB50203-2002的基本规定外,尚应符合以下要求:(1)砌块在运输、装卸过程中,严禁抛掷和倾倒。进场后应按品种、规格分别堆放整齐,堆放高度不得超过2M,并应防止雨淋。(2)砌体的龄期应超过28d才能上墙砌筑。(3)对采用专用砂浆砌筑时,砌体含水率应小于15%,并进行干砌。对采用普通砂浆砌筑时,在控制含水率的同时,应提前1-2d浇水湿润。在高温季节砌筑时,宜向砌筑面适量浇水。(4)切割砌块应使用手提式机具或相应的机械设备。(5)砌筑前,应按设计要求弹出墙的中线、边线与门窗洞位置

15、,并应以皮数杆为标志,拉好水准线。井按排块设计进行砌筑。并适当控制每天的砌筑速度。(6)填充墙体底部应砌高强度砖,如灰砂砖、页岩砖、砼砖等。其高度不宜小于200mm。(7)不同干密度和强度等级的砌块不应混砌,也不得和其它砖、砌块混砌。(8)砌体转角和交接部位应同时砌筑。对不能同时砌筑又必须留设临时间断处,应砌成斜槎。(9)填充墙砌体留置的拉结钢筋位置应与砌块皮数相符合。其钢筋宜采用植筋方法固定在框架柱上。其规格、数量、间距、长度应符合设计要求。填充墙与框架柱之间的缝隙应用砂浆嵌填密实。(10)砌体砌筑时,应严格控制水平度、平整度。并应错缝搭砌,搭砌长度不应小于砌块长度的1/3。不能满足搭砌长度

16、要求的通缝不应大于2皮。(11)砌体的灰缝厚度和宽度应正确,其水平灰缝厚度及竖向灰缝宽度分别宜为15mm和20mm。砌筑的水平、垂直砂浆饱满度均应80%。同时砌筑后宜对水平缝、垂直缝进行勾缝,勾缝深度为3-5mm。(12)填充墙砌至接近梁底时,应留一定空隙,并应至少间隔7d后,采用侧砖、立砖或砌块斜砌挤紧,其倾斜度宜为约60度,砌筑砂浆应饱满。(13)墙体尺寸允许偏差,如轴线位移、垂直度、表面平整度、门窗洞口高宽及偏移等应控制在规范允许范围内。4.墙体与门窗框的连接与密封(1)门窗安装应先在墙体中预留门窗洞,然后再安装门窗框。(2)普通木门安装,应在门洞两侧的墙体,按上、中、下位置每边砌入带防

17、腐木砖的C15砼块,然后用钉子将木门框与砼块连接固定。(3)塑钢、铝合金门窗安装,应在门窗洞两侧的墙体,按上、中、下位置每边砌入C15砼块,然后用尼龙锚柱或射钉弹将塑钢、铝合金门窗连接铁件与砼块固定。(4)木门框与墙体间隙,采用麻刀水泥砂浆或麻刀混合砂浆进行嵌填,要分层填塞密实,待达到一定强度后,再用水泥砂浆抹平。(5)塑钢、铝合金门窗与墙体之间的缝隙,采用PU发泡剂进行填塞,并在切割成深5-8mm槽口后,内外用砂浆填嵌密实,待砂浆达到强度后,用建筑密封胶封口。5.墙体暗敷管线(1)水电管线(包括穿墙套管、线盒、插座等)的暗敷,必须待墙体完成并达到一定强度后才能进行。开槽或凿洞时,应使用轻型电

18、动切割机并辅以镂槽器。凿槽开洞时,与墙面夹角不得大于450。开槽及洞口深度不宜超过墙厚的1/3。(2)敷设管线后的沟槽、穿墙套管和预埋件等,应用1:3水泥砂浆填实,宜比墙面微凹2mm,再用粘结剂补平。并沿槽长及洞口周边外贴大于100mm宽耐碱玻璃纤维网格布加强。6.墙面抹灰施工(1)外墙抹灰施工前应先安装门窗框、护栏等,并应将墙上的孔洞堵塞密实。(2)室内墙面、门洞口的阳角应采用1:2水泥砂浆做暗护角,其高度不应低于2m,每侧宽度不应小于50mm。(3)当要求抹灰层具有防水、防潮功能时,如厨房、卫生间应采用防水砂浆。(4)抹灰前基层表面的尘土、舌头灰、污垢、油渍等应清除干净,同时对砌块的缺棱掉

19、角、灰缝不饱满等缺陷要进行填补。若采用普通砂浆抹灰,应将墙面洒水湿润,但墙面不应有挂水。(5)采用普通砂浆抹灰时,宜在基层表面涂刷专用界面剂,以利基层与抹灰砂浆粘结牢固。当未涂刷界面剂时,底灰可适当掺加乳胶或107胶水。(6)大面积抹灰前应设置标筋,底灰厚度在8mm以内并压实。找平层及面层应有适当间隔时间。底灰强度不得高于找平层、面层抹灰强度。抹灰应分层进行,当抹灰总厚度等于或大于35mm时,应采用钢丝网或玻璃纤维网格布加强。对外墙抹灰应作分格缝处理。(7)外墙抹灰时,夏季采用遮阳蓬布,避免在暴晒下抹灰;冬季应采取防冻措施。(8)为了防止抹灰层开裂,宜喷洒防裂剂,在抹底灰后喷洒防裂剂。为遇干热

20、、强风天气时,在找平层、面层再喷洒防裂剂。(9)填充墙与砌体结合部的处理,应在该部位内外两侧,敷设宽度不小于200mm的钢丝网或玻璃纤维网格布,在绷紧后分别固定在砼与砌体的底灰上,要保证网片粘结牢固。(10)各抹灰层应防止快干、水冲、撞击和震动。在凝结后应采取措施防止玷污和损坏。对于普通砂浆,抹灰层应在湿润条件下养护。宜在抹灰层上喷养护剂,进行充分养护。7.有关防止墙体裂缝构造与加强措施(1)门窗过梁与窗台板做法,墙体洞口、附墙固定件做法均应符合设计规定。当门窗洞过大时,宜在门窗侧设置防裂构造柱。(2)当填充墙体超长、超高时,应设置防裂构造柱或配筋带。(3)在内外墙面的抹灰砂浆中掺杜拉纤维或丹

21、强丝。(4)当外墙采用普通抹灰砂浆时,在砂浆中敷设耐碱玻璃纤维网格布。综上所述,不难看出。采取多方面有关防止墙体开裂的技术措施。对提高工程质量、保证使用功能有其显著效果。但应该看到,消除墙体开裂的质量通病,是一项系统性很强的工作,必须要高水平的设计、高质量的施工、高水平的管理作保证。一定要按照我国建筑工程质量管理条例所规定的,谁设计谁负责,谁施工谁负责,谁监理谁负责及谁建设谁负责的原则,建立质量管理责任体系,以通过有关各方共同努力来实现。on can erection roof pipe frame, then according to floor Board thick, and templ

22、ate thick, and MU Fang thick right put aside wood Fang height adjustable support brace, note different thickness adjustable support brace height differences, finally laying wood Fang and templates. B. install before Liang Mo, should pop up on the horizontal level line and beam of shear wall center l

23、ine. C. floor template installation should be around the deck to the Centre, for the less-module slot, sews up sporadic multilayer templates available. D. upper level and the corresponding templates pole, should be located in the same vertical center line. Vertical spacing bar according to the desig

24、n requirements for 1.2m. Control of pole top surface smoothness, 48*3.5 pipe laying on the pillars as the main keel, keel the keel laying of 50x100 mm in the vertical direction time with the Lord, joist spacing of 250 mm, keel laying of plywood, multilayer surface smoothness, seam width and smoothne

25、ss of seams must conform to the requirements of the relevant specification. 4, and stairs template construction main process: template support erection Latrun line installation main keel (outside stared blankly) installation times keel (within stared blankly) tile multilayer Board template gap proce

26、ssing uniform brushing release agent lashing steel steel hidden acceptance qualified installation ladder Board and the stepping side die template pre check qualified for Xia road process 5, and templaterectification and strengthening the management of daily education, the spirit of reform short of t

27、he complete system, pay close attention to system implementation, really make the party organization and party member education and strict management, solid. Finally, the urge work on the lead, be sure to promote efficiency. Two education, not on education educational, not working with the Centre tw

28、o, must stick around the Center, serving the overall situation, coordinate, truly result-oriented and promote efficiency. Current and future a period, to tightly around coordination advance four a full strategy layout, winning full built society this a central and work overall, put carried out learn

29、ing education as promoted work of important opportunities and powerful power, guide General members cadres insisted development first priority, active adapted economic development new normal, consciously practice line five big development concept, effective grasp supply side structural reform, to gu

30、arantees and improved livelihood, construction more high ecological vitality happiness of city. Last year, we carry out three-three activities as a three-three special education important, find education and effective platform to facilitate the combination of work. Reference this a good practices, p

31、rovincial, and municipal decided in two learn a do learning education in the carried out five check five promoting, the County District units to insisted put two learn a do learning education and five check five promoting organic fusion, and common advance, do one plan layout, and one organization i

32、mplementation, put carried out two learn a do situation, and five check five promoting situation as party work evaluation of importantContent, as an important aspect of mutual evaluation on party members, testing as an important basis for leading bodies and leading cadres performance and guide the b

33、road masses of party members and cadres to study education opens up to the main economic and social development. At present, the overall smooth economic operation in our city, but downward pressure is still high, faced a number of challenges and tests. Meanwhile, coincides with the city, County and

34、township party committees this year general election year, how to really choose loyal, clean and serves as a good cadre, iron discipline of General Feng Qing Qi, Qi, Qi Shun, swapped out Powerful good situation, is a real test for all of us. General work on two to study the effect of education inspe

35、ction, if the true series of party rules and Constitution speaks well and truly become a qualified party member, naturally we can deal with advance and retreat left turn treatment, proper organizational arrangements and selection, proper treatment of personal interests. To put carried out two learn a do learning education with do reform development stable the work combined up, and seriously do Center work, and daily and job combined up, and guarantees improved livelihood, and promote social harmony combined up, and completed the task combined11

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