DBJ53T-回彈法檢測(cè)混凝土抗壓強(qiáng)度技術(shù)規(guī)程

PAGE32云南省工程建設(shè)地方標(biāo)準(zhǔn)DBDBJ53/T-52-XXXX回彈法檢測(cè)混凝土抗壓強(qiáng)度技術(shù)規(guī)程TechnicalSpecificationforInspectingofConcreteCompressiveStrengthbyReboundMethod20XX-XX-XX發(fā)布20XX-XX-XX實(shí)施云南省住房和城鄉(xiāng)建設(shè)廳發(fā)布云南省工程建設(shè)地方標(biāo)準(zhǔn)回彈法檢測(cè)混凝土抗壓強(qiáng)度技術(shù)規(guī)程TechnicalSpecificationforInspectingofConcreteCompressiveStrengthbyReboundMethodDB/-20**批準(zhǔn)部門(mén)：云南省住房和城鄉(xiāng)建設(shè)廳施行日期：20**年*月*日出版社2020云南云南省住房和城鄉(xiāng)建設(shè)廳前言根據(jù)云南省住房和城鄉(xiāng)建設(shè)廳《關(guān)于2018年云南省工程建設(shè)地方標(biāo)準(zhǔn)編制計(jì)劃》，對(duì)《回彈法檢測(cè)混凝土抗壓強(qiáng)度技術(shù)規(guī)程》DBJ53/T-52-2013進(jìn)行修訂。本次修訂是在《回彈法檢測(cè)混凝土抗壓強(qiáng)度技術(shù)規(guī)程》DBJ53/T-52-2013的基礎(chǔ)上，經(jīng)廣泛調(diào)查研究，認(rèn)真總結(jié)實(shí)踐經(jīng)驗(yàn)，吸收了國(guó)內(nèi)外回彈儀的最新成果，總結(jié)回彈法檢測(cè)混凝土抗壓強(qiáng)度技術(shù)的經(jīng)驗(yàn)，結(jié)合我省建設(shè)工程中混凝土質(zhì)量檢測(cè)的實(shí)際需要，從地域及行業(yè)等方面綜合考慮，收集整理各地區(qū)的試驗(yàn)數(shù)據(jù)，建立數(shù)據(jù)庫(kù)，在廣泛征求意見(jiàn)的基礎(chǔ)上，對(duì)原規(guī)程進(jìn)行修訂。本規(guī)程的主要內(nèi)容是：1總則；2術(shù)語(yǔ)和符號(hào)；3回彈儀；4檢測(cè)技術(shù)；5回彈值計(jì)算；6測(cè)強(qiáng)曲線；7混凝土抗壓強(qiáng)度的計(jì)算。本規(guī)程主要修訂的內(nèi)容是：1建立了新的全省測(cè)強(qiáng)曲線；2修訂了回彈值的取值方法；3強(qiáng)調(diào)了檢測(cè)曲線動(dòng)態(tài)化常態(tài)管理內(nèi)容。本規(guī)程由云南省住房和城鄉(xiāng)建設(shè)廳負(fù)責(zé)管理，云南大學(xué)建筑與規(guī)劃學(xué)院、云南特斯泰工程檢測(cè)鑒定有限公司負(fù)責(zé)技術(shù)內(nèi)容的解釋。使用過(guò)程中如有意見(jiàn)或建議，請(qǐng)將意見(jiàn)和資料寄送云南特斯泰工程檢測(cè)鑒定有限公司（地址：昆明市環(huán)城西路368號(hào)華海新境界商務(wù)大廈A座10樓，郵政編碼：650032，E-mail：yntst@126.com）。主編單位：參編單位：本規(guī)程主要起草人：本規(guī)程參加人：本規(guī)程審查人：

目次TOC\o"2-2"\h\z\t"標(biāo)題1,1"1總則 62術(shù)語(yǔ)和符號(hào) 82.1術(shù)語(yǔ) 82.2符號(hào) 83回彈儀 103.1一般規(guī)定 103.2檢定或校準(zhǔn) 103.3維護(hù)保養(yǎng) 114檢測(cè)技術(shù) 124.1一般規(guī)定 124.2回彈值測(cè)量 144.3碳化深度值測(cè)量 145回彈值計(jì)算 156測(cè)強(qiáng)曲線 166.1一般規(guī)定 166.2地區(qū)測(cè)強(qiáng)曲線 167混凝土強(qiáng)度的計(jì)算 18附錄A測(cè)區(qū)混凝土強(qiáng)度換算表 20附錄B非水平方向檢測(cè)時(shí)的回彈值修正值 32附錄C不同澆筑面的回彈值修正值 34附錄D回彈法檢測(cè)混凝土抗壓強(qiáng)度報(bào)告 35本規(guī)程用詞說(shuō)明 36引用標(biāo)準(zhǔn)名錄 37條文說(shuō)明 38Contents1GeneralProvisions 62TermsandSymbol 62.1Terms 62.2Symbol 73ReboundHammer 93.1TechnicalRequiremens 93.2Verification 93.3Maintnance 104TestingTechnology 114.1GeneralRequiremens 114.2ReboundValueMeasurement 134.3CarbonationDepthMeasurements 135CalculationofReboundVale 146TestingRequirements 156.1GeneralRequiremens 156.2LocalTestingStrengthCurve 157CalculationofCompressiveStrengthforConcrete 16AppendixAConversionTableofCompressiveStrengthofConcreteforTestArea 16AppendixBModifiedValueofReboundValueunderNon-horizontalTesting 16AppendixCModifiedValueofReboundValueofDifferentPouringPlanes 16AppendixDReportforTestingofConcreteCompressiveStrengthbyReboundMethod 16ExplanationofWordinginThisSpecification 16ListofQuotedStandards 16Addition:ExplanationofProvisions 161總則1.0.1為統(tǒng)一云南地區(qū)使用混凝土回彈法檢測(cè)普通混凝土抗壓強(qiáng)度的技術(shù)和方法，保證檢測(cè)結(jié)果準(zhǔn)確、可靠，制定本規(guī)程。1.0.2回彈法檢測(cè)混凝土強(qiáng)度的測(cè)強(qiáng)曲線，宜按專(zhuān)用測(cè)強(qiáng)曲線、地區(qū)測(cè)強(qiáng)曲線、統(tǒng)一測(cè)強(qiáng)曲線的順序選用。1.0.3測(cè)強(qiáng)曲線實(shí)行動(dòng)態(tài)化常態(tài)管理，各地區(qū)和工程在條件成熟的情況下，宜制定專(zhuān)用測(cè)強(qiáng)曲線，經(jīng)審定和批準(zhǔn)納入規(guī)程管理使用。1.0.4采用回彈法檢測(cè)混凝土強(qiáng)度，除應(yīng)遵守本規(guī)程外，尚應(yīng)符合國(guó)家、行業(yè)和地方現(xiàn)行有關(guān)標(biāo)準(zhǔn)的規(guī)定。

2術(shù)語(yǔ)和符號(hào)2.1術(shù)語(yǔ)2.1.1測(cè)區(qū)Testarea在進(jìn)行結(jié)構(gòu)或構(gòu)件混凝土強(qiáng)度檢測(cè)時(shí)確定的檢測(cè)區(qū)域2.1.2測(cè)點(diǎn)Testpoint測(cè)區(qū)內(nèi)的回彈檢測(cè)點(diǎn)。2.1.3測(cè)區(qū)混凝土抗壓強(qiáng)度換算值Conversionvalueofconcretecompressivestrengthforthetestingzone根據(jù)測(cè)區(qū)的平均回彈值和碳化深度值，通過(guò)測(cè)強(qiáng)曲線或測(cè)區(qū)強(qiáng)度換算表得到的該測(cè)區(qū)現(xiàn)齡期混凝土的抗壓強(qiáng)度值。2.1.4混凝土抗壓強(qiáng)度推定值Estimationvalueofcompressionstrengthforconcrete相應(yīng)于強(qiáng)度換算值總體分布中保證率不低于95%的構(gòu)件中的混凝土強(qiáng)度值。2.2符號(hào)——測(cè)區(qū)的平均碳化深度值；——第個(gè)測(cè)區(qū)碳化值的平均值；——結(jié)構(gòu)或構(gòu)件第個(gè)測(cè)區(qū)混凝土抗壓強(qiáng)度換算值；——芯樣試件混凝土強(qiáng)度平均值；——同條件立方體試塊混凝土強(qiáng)度平均值；——對(duì)應(yīng)于鉆芯部位或同條件立方體試塊回彈測(cè)區(qū)混凝土強(qiáng)度換算值的平均值；——第i個(gè)混凝土芯樣試件的抗壓強(qiáng)度實(shí)測(cè)值；——第i個(gè)混凝土立方體試件的抗壓強(qiáng)度；——修正前第i個(gè)測(cè)區(qū)的混凝土強(qiáng)度換算值；——修正后第i個(gè)測(cè)區(qū)的混凝土強(qiáng)度換算值；——結(jié)構(gòu)或構(gòu)件中測(cè)區(qū)混凝土強(qiáng)度換算值的最小值；——構(gòu)件混凝土抗壓強(qiáng)度推定值；——結(jié)構(gòu)或構(gòu)件測(cè)區(qū)混凝土抗壓強(qiáng)度換算值的平均值；——結(jié)構(gòu)或構(gòu)件測(cè)區(qū)混凝土抗壓強(qiáng)度換算值的標(biāo)準(zhǔn)差；——第個(gè)測(cè)點(diǎn)的有效回彈值；——測(cè)區(qū)的平均回彈值；——第個(gè)測(cè)區(qū)回彈值的平均值；——回彈儀非水平狀態(tài)檢測(cè)時(shí)，測(cè)區(qū)的平均回彈值；——非水平狀態(tài)檢測(cè)時(shí)，回彈值的修正值；——回彈儀在水平方向檢測(cè)混凝土澆筑底面時(shí)，測(cè)區(qū)的平均回彈值；——回彈儀檢測(cè)混凝土澆筑表面時(shí)，回彈值的修正值；——回彈儀檢測(cè)混凝土澆筑底面時(shí)，回彈值的修正值；——測(cè)區(qū)混凝土強(qiáng)度修正量。

3回彈儀3.1一般規(guī)定3.1.1回彈儀可為指針直讀式的，也可為數(shù)字式的。3.1.2回彈儀應(yīng)具有產(chǎn)品合格證及計(jì)量檢定或校準(zhǔn)證書(shū)，并應(yīng)在回彈儀的明顯位置上具有下列標(biāo)識(shí)：名稱(chēng)、型號(hào)、規(guī)格、制造廠名（或商標(biāo)）、出廠編號(hào)等。3.1.3回彈儀除應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《回彈儀》GB/T9138的規(guī)定外，尚應(yīng)符合下列規(guī)定：1水平彈擊時(shí)，在彈擊錘脫鉤瞬間，回彈儀的標(biāo)稱(chēng)能量應(yīng)為2.207J；2在彈擊錘與彈擊桿碰撞的瞬間，彈擊拉簧應(yīng)處于自由狀態(tài)，且彈擊錘起跳點(diǎn)應(yīng)位于指針指示刻度尺上的“0”處；3在洛氏硬度HRC為60±2的鋼砧上，回彈儀的率定值應(yīng)為80±2；4數(shù)字式回彈儀應(yīng)帶有指針直讀示值系統(tǒng)，數(shù)字顯示的回彈值與指針直讀示值相差不應(yīng)超過(guò)1。3.1.4回彈儀使用時(shí)的環(huán)境溫度應(yīng)為-4℃～40℃。3.2檢定或校準(zhǔn)3.2.1回彈儀有下列情況之一時(shí)，應(yīng)由法定計(jì)量檢定機(jī)構(gòu)按現(xiàn)行行業(yè)標(biāo)準(zhǔn)《回彈儀檢定規(guī)程》JJG817進(jìn)行檢定或校準(zhǔn)方可使用：1新回彈儀啟用前；2超過(guò)檢定或校準(zhǔn)有效期；3數(shù)字式回彈儀數(shù)字顯示的回彈值與指針直讀示值相差大于1；4經(jīng)常規(guī)保養(yǎng)后，在鋼砧上的率定值不合格；5遭受?chē)?yán)重撞擊或其他損害。3.2.2在下列情況之一時(shí)，回彈儀應(yīng)在鋼砧上進(jìn)行率定試驗(yàn)：1回彈儀使用前后；2測(cè)試過(guò)程中對(duì)回彈儀性能有懷疑時(shí)。當(dāng)回彈儀率定值不在80±2范圍內(nèi)時(shí)，應(yīng)按本規(guī)程第3.3節(jié)的要求，對(duì)回彈儀進(jìn)行常規(guī)保養(yǎng)后再進(jìn)行率定。若再次率定仍達(dá)不到要求，則應(yīng)送檢定單位檢定。3.2.3回彈儀的率定試驗(yàn)應(yīng)符合下列規(guī)定：1率定試驗(yàn)應(yīng)在室溫為5~35℃的條件下進(jìn)行；2鋼砧表面干燥、清潔，并應(yīng)穩(wěn)固地平放在剛度大的物體上；3回彈值取連續(xù)向下彈擊三次的穩(wěn)定回彈結(jié)果的平均值；4率定試驗(yàn)應(yīng)分四個(gè)方向進(jìn)行，每個(gè)方向彈擊前，彈擊桿旋轉(zhuǎn)90度，每個(gè)方向的回彈平均值均應(yīng)為80±2。3.2.4回彈儀率定試驗(yàn)所用的鋼砧應(yīng)通過(guò)計(jì)量檢定機(jī)構(gòu)檢定或校準(zhǔn)，并在計(jì)量有效期內(nèi)使用。3.3維護(hù)保養(yǎng)3.3.1回彈儀具有下列情況之一時(shí)，應(yīng)進(jìn)行保養(yǎng)，且有相應(yīng)的記錄：1回彈儀彈擊超過(guò)2000次；2在鋼砧上的率定值不符合要求；3對(duì)檢測(cè)值有懷疑時(shí)。3.3.2回彈儀的保養(yǎng)應(yīng)按下列步驟進(jìn)行：1先將彈擊錘脫鉤，取出機(jī)芯，卸下彈擊桿，取出緩沖壓簧，并取出彈擊錘、彈擊拉簧和拉簧座。2清潔機(jī)芯各零部件，重點(diǎn)清理中心導(dǎo)桿、彈擊錘和彈擊桿的內(nèi)孔及沖擊面。清理后，應(yīng)在中心導(dǎo)桿上薄薄涂抹鐘表油，其他零部件均不得抹油。3清理機(jī)殼內(nèi)壁，卸下刻度尺，檢查指針，其摩擦力應(yīng)為0.5N～0.8N。4對(duì)于數(shù)字式回彈儀，還應(yīng)按產(chǎn)品要求的維護(hù)程序進(jìn)行維護(hù)。5保養(yǎng)時(shí)，不得旋轉(zhuǎn)尾蓋上已定位緊固的調(diào)零螺絲，不得自制或更換零部件。6保養(yǎng)后應(yīng)按本規(guī)程第3.2.3條的規(guī)定進(jìn)行率定。3.3.3回彈儀使用完畢，應(yīng)使彈擊桿伸出機(jī)殼，并應(yīng)清除彈擊桿、桿前端球面以及刻度尺表面和外殼上的污垢、塵土?；貜梼x不用時(shí)，應(yīng)將彈擊桿壓入機(jī)殼內(nèi)，彈擊后再按下按鈕，鎖住機(jī)芯，然后裝入儀器箱。儀器箱應(yīng)平放在干燥陰涼處。數(shù)字式回彈儀長(zhǎng)期不用時(shí)，應(yīng)取出電池。

4檢測(cè)技術(shù)4.1一般規(guī)定4.1.1采用回彈法檢測(cè)混凝土強(qiáng)度時(shí)，宜具有下列資料：1工程名稱(chēng)，勘察、設(shè)計(jì)、施工、監(jiān)理、監(jiān)督等單位名稱(chēng)；2結(jié)構(gòu)或構(gòu)件名稱(chēng)、數(shù)量及結(jié)構(gòu)類(lèi)型、混凝土強(qiáng)度設(shè)計(jì)等級(jí)；3水泥安定性、水泥品種規(guī)格、砂石品種規(guī)格、外加劑、摻合料品種、混凝土配合比等；4模板類(lèi)型、混凝土澆筑、養(yǎng)護(hù)情況、澆筑日期和當(dāng)日氣象溫濕度等；5必要的設(shè)計(jì)圖紙和施工記錄；6檢測(cè)原因。4.1.2回彈儀在檢測(cè)前后，均應(yīng)在鋼砧上做率定試驗(yàn)，并應(yīng)符合本規(guī)程第3.1.3條的規(guī)定。4.1.3混凝土強(qiáng)度可按單個(gè)構(gòu)件或按批量進(jìn)行檢測(cè)，并應(yīng)符合下列規(guī)定：1按單個(gè)構(gòu)件檢測(cè)時(shí)，應(yīng)在構(gòu)件上均勻布置測(cè)區(qū)，每個(gè)結(jié)構(gòu)構(gòu)件上測(cè)區(qū)數(shù)量不宜少于10個(gè)；2同批構(gòu)件按批抽樣檢測(cè)時(shí)，檢驗(yàn)批最小樣本容量應(yīng)按照現(xiàn)行國(guó)家標(biāo)準(zhǔn)《建筑結(jié)構(gòu)檢測(cè)技術(shù)標(biāo)準(zhǔn)》GB/T50344的規(guī)定抽樣；3對(duì)某一方向尺寸不大于4.5m且另一方向尺寸不大于0.3m的構(gòu)件，其測(cè)區(qū)數(shù)量可適當(dāng)減少，但不應(yīng)少于5個(gè)。4.1.4按批抽樣檢測(cè)時(shí),符合下列條件的構(gòu)件可作為同批構(gòu)件：1混凝土設(shè)計(jì)強(qiáng)度等級(jí)相同；2混凝土原材料、配合比、成型工藝、養(yǎng)護(hù)條件和齡期基本相同；3構(gòu)件種類(lèi)相同；4施工階段所處狀態(tài)基本相同。4.1.5構(gòu)件的測(cè)區(qū)布置宜滿(mǎn)足下列規(guī)定：1在條件允許時(shí)，測(cè)區(qū)宜優(yōu)先布置在構(gòu)件混凝土澆筑方向的側(cè)面；2測(cè)區(qū)可在構(gòu)件的兩個(gè)對(duì)應(yīng)面、相鄰面或同一面上布置；3測(cè)區(qū)宜均勻布置，相鄰兩測(cè)區(qū)的間距不宜大于2m；4測(cè)區(qū)宜避開(kāi)鋼筋密集區(qū)和預(yù)埋件，宜布置在在構(gòu)件薄弱區(qū)及重點(diǎn)區(qū)；5測(cè)區(qū)尺寸宜為200mm×200mm；6測(cè)試面應(yīng)清潔、平整、干燥，不應(yīng)有接縫、施工縫、飾面層、浮漿和油垢，并應(yīng)避開(kāi)蜂窩、麻面部位。必要時(shí)，可用砂輪片清除雜物和磨平不平整處，并擦凈殘留粉塵；7對(duì)回彈測(cè)試時(shí)可能產(chǎn)生顫動(dòng)的薄壁、小型構(gòu)件，應(yīng)進(jìn)行固定。4.1.6構(gòu)件上的測(cè)區(qū)應(yīng)編號(hào)，并記錄測(cè)區(qū)位置和外觀質(zhì)量情況。4.1.7當(dāng)檢測(cè)條件與本規(guī)程第6.2.1條的適用條件有較大差異時(shí)，可采用在構(gòu)件上鉆取的混凝土芯樣或同條件試塊對(duì)測(cè)區(qū)混凝土強(qiáng)度換算值進(jìn)行修正。對(duì)同一強(qiáng)度等級(jí)混凝土修正時(shí)，芯樣數(shù)量不應(yīng)少于6個(gè)，公稱(chēng)直徑宜為100mm，高徑比應(yīng)為1，芯樣宜在測(cè)區(qū)內(nèi)鉆取，每個(gè)芯樣應(yīng)只加工一個(gè)試件。同條件試塊修正時(shí)，試塊數(shù)量不應(yīng)少于6個(gè)，試塊邊長(zhǎng)應(yīng)為150mm。計(jì)算時(shí)，測(cè)區(qū)混凝土強(qiáng)度修正量及測(cè)區(qū)混凝土強(qiáng)度換算值的修正應(yīng)符合下列規(guī)定：1修正量應(yīng)按下列公式計(jì)算：(4.1.7-1)(4.1.7-2)(4.1.7-3)(4.1.7-4)(4.1.7-5)式中：——測(cè)區(qū)混凝土強(qiáng)度修正量（MPa），精確到0.1MPa；——芯樣試件混凝土強(qiáng)度平均值（MPa），精確到0.1MPa；——150mm同條件立方體試塊混凝土強(qiáng)度平均值（MPa），精確到0.1MPa；——對(duì)應(yīng)于鉆芯部位或同條件立方體試塊回彈測(cè)區(qū)混凝土強(qiáng)度換算值的平均值（MPa），精確到0.1MPa；——第i個(gè)混凝土芯樣試件的抗壓強(qiáng)度實(shí)測(cè)值；——第i個(gè)混凝土立方體試塊的抗壓強(qiáng)度；——對(duì)應(yīng)于第i個(gè)芯樣部位或同條件立方體試塊測(cè)區(qū)回彈值和碳化深度值的混凝土強(qiáng)度換算值，可按本規(guī)程附錄A取值；——芯樣或試塊數(shù)量。2測(cè)區(qū)混凝土強(qiáng)度換算值的修正應(yīng)按下式計(jì)算：(4.1.7-6)式中：——第i個(gè)測(cè)區(qū)修正前的混凝土強(qiáng)度換算值（MPa），精確到0.1MPa；——第i個(gè)測(cè)區(qū)修正后的混凝土強(qiáng)度換算值（MPa），精確到0.1MPa。4.2回彈值測(cè)量4.2.1測(cè)量回彈值時(shí)，回彈儀的軸線應(yīng)始終垂直于混凝土檢測(cè)面，并應(yīng)緩慢施壓、準(zhǔn)確讀數(shù)、快速?gòu)?fù)位。4.2.2每一測(cè)區(qū)讀取10個(gè)回彈值，每一測(cè)點(diǎn)的回彈值讀數(shù)精確至1。測(cè)點(diǎn)宜在測(cè)區(qū)范圍內(nèi)均勻分布，相鄰兩測(cè)點(diǎn)的凈距離不宜小于20mm；測(cè)點(diǎn)距構(gòu)件邊緣、外露鋼筋、預(yù)埋件的距離不宜小于30mm；測(cè)點(diǎn)不應(yīng)在氣孔或外露石子上，同一測(cè)點(diǎn)應(yīng)只彈擊一次。4.3碳化深度值測(cè)量4.3.1回彈值測(cè)量完畢后，應(yīng)在有代表性的測(cè)區(qū)位置上測(cè)量碳化深度值，測(cè)點(diǎn)數(shù)不應(yīng)少于構(gòu)件測(cè)區(qū)數(shù)的30%，取其平均值作為該構(gòu)件每個(gè)測(cè)區(qū)的碳化深度值。當(dāng)碳化深度值極差大于2.0mm時(shí)，應(yīng)在每一測(cè)區(qū)分別測(cè)量碳化深度值。4.3.2碳化深度值的測(cè)量應(yīng)符合下列規(guī)定：1可采用適當(dāng)?shù)墓ぞ咴跍y(cè)區(qū)表面形成直徑約15mm的孔洞，其深度應(yīng)大于混凝土的碳化深度；2清除孔洞中的粉末和碎屑，且不得用水擦洗；3采用濃度為1%~2%的酚酞酒精溶液滴在孔洞內(nèi)壁的邊緣處，當(dāng)已碳化與未碳化界線清晰時(shí)，采用碳化深度測(cè)量?jī)x器測(cè)量已碳化與未碳化混凝土交界面到混凝土表面的垂直距離，測(cè)量3次，每次讀數(shù)精確至0.25mm。4取三次測(cè)量的平均值作為檢測(cè)結(jié)果，并應(yīng)精確至0.5mm。

5回彈值計(jì)算5.0.1計(jì)算測(cè)區(qū)平均回彈值時(shí)，從該測(cè)區(qū)的10個(gè)回彈值中剔除1個(gè)最大值和1個(gè)最小值，用余下的8個(gè)回彈值按下式計(jì)算：(5.0.1)式中：Rm——測(cè)區(qū)平均回彈值，精確至0.1；Ri——第i個(gè)測(cè)點(diǎn)的有效回彈值。5.0.2非水平方向檢測(cè)混凝土澆筑側(cè)面時(shí)，測(cè)區(qū)的平均回彈值應(yīng)按下式修正：Ra式中Ra——修正后的測(cè)區(qū)平均回彈值，精確至0.1；——非水平方向檢測(cè)時(shí)測(cè)區(qū)的平均回彈值，精確至0.1；——非水平方向檢測(cè)時(shí)回彈值的修正值，應(yīng)按本規(guī)程附錄B取值。5.0.3水平方向檢測(cè)混凝土澆筑表面或澆筑底面時(shí)，測(cè)區(qū)的平均回彈值應(yīng)按下列公式修正：RaRa式中：、——水平方向檢測(cè)混凝土澆筑表面、底面時(shí)，測(cè)區(qū)的平均回彈值，精確至0.1；.、——混凝土澆筑表面、底面回彈值的修正值，應(yīng)按本規(guī)程附錄C取值。5.0.4測(cè)試時(shí)回彈儀處于非水平方向且測(cè)試面為混凝土的非澆筑側(cè)面時(shí)，應(yīng)先對(duì)回彈值進(jìn)行角度修正，然后對(duì)角度修正后的值再進(jìn)行表面或底面修正。

6測(cè)強(qiáng)曲線6.1一般規(guī)定6.1.1混凝土強(qiáng)度換算可采用本規(guī)程制定的地區(qū)測(cè)強(qiáng)曲線計(jì)算。地區(qū)測(cè)強(qiáng)曲線：由本地區(qū)常用材料、成型工藝制作的混凝土試件，通過(guò)試驗(yàn)所建立的測(cè)強(qiáng)曲線。6.1.2回彈法檢測(cè)普通混凝土強(qiáng)度測(cè)強(qiáng)曲線宜按專(zhuān)用測(cè)強(qiáng)曲線、地區(qū)測(cè)強(qiáng)曲線、統(tǒng)一測(cè)強(qiáng)曲線的順序選用。。6.1.3本規(guī)程適用于普通混凝土強(qiáng)度的檢測(cè)，不適用于因凍害、化學(xué)侵蝕、火災(zāi)、高溫等造成表面疏松、剝落、表層與內(nèi)部質(zhì)量有明顯差異的混凝土強(qiáng)度檢測(cè)。6.1.4測(cè)強(qiáng)曲線實(shí)行動(dòng)態(tài)化常態(tài)管理，各地區(qū)和工程在條件成熟的情況下，宜制定專(zhuān)用測(cè)強(qiáng)曲線，經(jīng)審定和批準(zhǔn)納入規(guī)程管理使用。6.2地區(qū)測(cè)強(qiáng)曲線6.2.1符合下列條件的混凝土，測(cè)區(qū)強(qiáng)度應(yīng)按本規(guī)程附錄A的曲線方程計(jì)算或按本規(guī)程附錄A的規(guī)定進(jìn)行強(qiáng)度換算：1混凝土采用的水泥、砂、石、外加劑、摻合料、拌和用水應(yīng)符合云南省和國(guó)家現(xiàn)行有關(guān)標(biāo)準(zhǔn)規(guī)定；2采用普通成型工藝；3采用符合國(guó)家標(biāo)準(zhǔn)規(guī)定的模板；4普通混凝土；5齡期為：7d～2000d；6抗壓強(qiáng)度為：15.0MPa～70.0MPa。6.2.2當(dāng)有下列情況之一時(shí)，測(cè)區(qū)混凝土強(qiáng)度不得按本規(guī)程附錄A進(jìn)行強(qiáng)度換算：1非泵送混凝土粗骨料最大公稱(chēng)粒徑大于60mm，泵送混凝土粗骨料最大公稱(chēng)粒徑大于31.5mm；2粗骨料為河卵石的混凝土；3特種成型工藝制作的混凝土；4檢測(cè)部位曲率半徑小于250mm；5潮濕或浸水混凝土。6.2.3測(cè)區(qū)混凝土強(qiáng)度換算表所依據(jù)的地區(qū)測(cè)強(qiáng)曲線，其強(qiáng)度誤差值應(yīng)符合下列規(guī)定：1平均相對(duì)誤差（δ）不應(yīng)大于±14.0%；2相對(duì)標(biāo)準(zhǔn)差（er）不應(yīng)大于17.0%。6.2.4使用本規(guī)程測(cè)強(qiáng)曲線時(shí)，被檢測(cè)的混凝土應(yīng)與制定該類(lèi)測(cè)強(qiáng)曲線混凝土的適應(yīng)條件相同，不得超出該類(lèi)測(cè)強(qiáng)曲線的適應(yīng)范圍。每半年抽取一定數(shù)量的同條件試件進(jìn)行校核，當(dāng)存在顯著差異時(shí)，應(yīng)查找原因，不得繼續(xù)使用。

7混凝土強(qiáng)度的計(jì)算7.0.1構(gòu)件第i個(gè)測(cè)區(qū)混凝土強(qiáng)度換算值，可按本規(guī)程第5章所求得的平均回彈值（Rm）及本規(guī)程第4.3條所求得的平均碳化深度值（dm）由本規(guī)程附錄A查表或計(jì)算確定。7.0.2構(gòu)件的測(cè)區(qū)混凝土強(qiáng)度平均值應(yīng)根據(jù)各測(cè)區(qū)的混凝土強(qiáng)度換算值計(jì)算。當(dāng)測(cè)區(qū)數(shù)為10個(gè)及以上時(shí)，還應(yīng)計(jì)算強(qiáng)度標(biāo)準(zhǔn)差。平均值及標(biāo)準(zhǔn)差應(yīng)按下列公式計(jì)算：(7.0.2-1)(7.0.2-2)式中：——構(gòu)件測(cè)區(qū)混凝土強(qiáng)度換算值的平均值（MPa），精確至0.1MPa；——對(duì)于單個(gè)檢測(cè)的構(gòu)件，取該構(gòu)件的測(cè)區(qū)數(shù)；對(duì)批量檢測(cè)的構(gòu)件，取所有被抽檢構(gòu)件測(cè)區(qū)數(shù)之和；——結(jié)構(gòu)或構(gòu)件測(cè)區(qū)混凝土強(qiáng)度換算值的標(biāo)準(zhǔn)差（MPa），精確至0.01MPa。7.0.3構(gòu)件的現(xiàn)齡期強(qiáng)度推定值（）應(yīng)符合下列規(guī)定：1當(dāng)構(gòu)件測(cè)區(qū)數(shù)少于10個(gè)時(shí)，應(yīng)按下式計(jì)算：(7.0.3-1)式中：——構(gòu)件中測(cè)區(qū)混凝土強(qiáng)度換算值的最小值。2當(dāng)構(gòu)件的測(cè)區(qū)強(qiáng)度值中出現(xiàn)小于15.0MPa時(shí)，應(yīng)按下式確定：(7.0.3-2)3當(dāng)構(gòu)件測(cè)區(qū)數(shù)不少于10個(gè)時(shí)，應(yīng)按下式計(jì)算：(7.0.3-3)4當(dāng)按批檢測(cè)時(shí)，應(yīng)按下式計(jì)算：(7.0.3-4)式中：k——推定系數(shù)，宜取1.645。當(dāng)需要進(jìn)行推定強(qiáng)度區(qū)間時(shí)，可按國(guó)家現(xiàn)行有關(guān)標(biāo)準(zhǔn)的規(guī)定取值。7.0.4對(duì)按批量檢測(cè)的構(gòu)件，當(dāng)該批構(gòu)件混凝土強(qiáng)度標(biāo)準(zhǔn)差出現(xiàn)下列情況之一時(shí)，該批構(gòu)件應(yīng)全部按單個(gè)構(gòu)件檢測(cè)：1當(dāng)該批構(gòu)件混凝土強(qiáng)度平均值小于25MPa時(shí)，大于4.5MPa時(shí)；2當(dāng)該批構(gòu)件混凝土強(qiáng)度平均值不小于25MPa且不大于70MPa，大于5.5MPa時(shí)。7.0.5回彈法檢測(cè)混凝土抗壓強(qiáng)度報(bào)告可按本規(guī)程附錄D的格式編寫(xiě)。

附錄A測(cè)區(qū)混凝土強(qiáng)度換算表（云南地區(qū)）平均回彈值Rm測(cè)區(qū)混凝土強(qiáng)度換算值（MPa）平均碳化深度dm(mm)0.00.51.01.52.02.53.03.54.04.55.05.5≥6.018.415.0————————————18.515.115.115.0——————————18.615.315.215.115.115.0————————18.715.415.415.315.215.215.115.015.0—————18.815.615.515.515.415.315.315.215.115.115.0———18.915.715.715.615.515.515.415.315.315.215.115.115.0—19.015.915.815.815.715.615.615.515.415.415.315.215.215.119.116.116.015.915.815.815.715.615.615.515.415.415.315.219.216.216.116.116.015.915.915.815.715.715.615.515.415.419.316.416.316.216.216.116.015.915.915.815.715.715.615.519.416.516.416.416.316.216.216.116.016.015.915.815.715.719.516.716.616.516.516.416.316.216.216.116.016.015.915.819.616.816.816.716.616.516.516.416.316.316.216.116.016.019.717.016.916.816.816.716.616.516.516.416.316.316.216.119.817.117.117.016.916.816.816.716.616.616.516.416.316.319.917.317.217.117.117.016.916.916.816.716.616.616.516.420.017.517.417.317.217.217.117.016.916.916.816.716.616.620.117.617.517.517.417.317.217.217.117.016.916.916.816.720.217.817.717.617.517.517.417.317.217.217.117.016.916.920.317.917.817.817.717.617.517.517.417.317.217.217.117.020.418.118.017.917.817.817.717.617.517.517.417.317.217.220.518.218.218.118.017.917.817.817.717.617.517.517.417.320.618.418.318.218.218.118.017.917.817.817.717.617.517.420.718.518.518.418.318.218.118.118.017.917.817.817.717.620.818.718.618.518.518.418.318.218.118.118.017.917.817.720.918.918.818.718.618.518.518.418.318.218.118.118.017.921.019.018.918.818.818.718.618.518.418.418.318.218.118.021.119.219.119.018.918.818.818.718.618.518.418.418.318.221.219.319.219.219.119.018.918.818.718.718.618.518.418.321.319.519.419.319.219.119.119.018.918.818.718.618.618.521.419.619.619.519.419.319.219.119.019.018.918.818.718.621.519.819.719.619.519.519.419.319.219.119.018.918.918.821.620.019.919.819.719.619.519.419.419.319.219.119.018.921.720.120.019.919.819.819.719.619.519.419.319.219.219.1續(xù)表平均回彈值Rm測(cè)區(qū)混凝土強(qiáng)度換算值（MPa）平均碳化深度dm(mm)0.00.51.01.52.02.53.03.54.04.55.05.5≥6.021.820.320.220.120.019.919.819.719.719.619.519.419.319.221.920.420.320.220.220.120.019.919.819.719.619.519.519.422.020.620.520.420.320.220.120.020.019.919.819.719.619.522.120.720.620.620.520.420.320.220.120.019.919.819.819.722.220.920.820.720.620.520.420.420.320.220.120.019.919.822.321.021.020.920.820.720.620.520.420.320.220.120.120.022.421.221.121.020.920.820.720.720.620.520.420.320.220.122.521.421.321.221.121.020.920.820.720.620.520.420.420.322.621.521.421.321.221.121.121.020.920.820.720.620.520.422.721.721.621.521.421.321.221.121.020.920.820.720.720.622.821.821.721.621.521.521.421.321.221.121.020.920.820.722.922.021.921.821.721.621.521.421.321.221.121.021.020.923.022.122.122.021.921.821.721.621.521.421.321.221.121.023.122.322.222.122.021.921.821.721.621.521.421.421.321.223.222.522.422.322.222.122.021.921.821.721.621.521.421.323.322.622.522.422.322.222.122.021.921.821.721.721.621.523.422.822.722.622.522.422.322.222.122.021.921.821.721.623.522.922.822.722.622.522.422.322.222.122.022.021.921.823.623.123.022.922.822.722.622.522.422.322.222.122.021.923.723.223.123.022.922.822.722.622.522.422.422.322.222.123.823.423.323.223.123.022.922.822.722.622.522.422.322.223.923.623.523.423.323.223.123.022.922.822.722.622.522.424.023.723.623.523.423.323.223.123.022.922.822.722.622.524.123.923.823.723.623.523.423.323.223.123.022.922.822.724.224.023.923.823.723.623.523.423.323.223.123.022.922.824.324.224.124.023.923.823.723.623.523.423.323.223.123.024.424.424.224.124.023.923.823.723.623.523.423.323.223.124.524.524.424.324.224.124.023.923.823.723.623.523.423.324.624.724.624.524.324.224.124.023.923.823.723.623.523.424.724.824.724.624.524.424.324.224.124.023.923.823.723.624.825.024.924.824.724.524.424.324.224.124.023.923.823.724.925.125.024.924.824.724.624.524.424.324.224.124.023.925.025.325.225.125.024.924.824.624.524.424.324.224.124.025.125.525.325.225.125.024.924.824.724.624.524.424.324.225.225.625.525.425.325.225.125.024.824.724.624.524.424.325.325.825.725.525.425.325.225.125.024.924.824.724.624.525.425.925.825.725.625.525.425.325.125.024.924.824.724.625.526.126.025.925.725.625.525.425.325.225.125.024.924.8續(xù)表平均回彈值Rm測(cè)區(qū)混凝土強(qiáng)度換算值（MPa）平均碳化深度dm(mm)0.00.51.01.52.02.53.03.54.04.55.05.5≥6.025.626.226.126.025.925.825.725.625.525.325.225.125.024.925.726.426.326.226.125.925.825.725.625.525.425.325.225.125.826.626.426.326.226.126.025.925.825.725.525.425.325.225.926.726.626.526.426.326.126.025.925.825.725.625.525.426.026.926.826.626.526.426.326.226.126.025.825.725.625.526.127.026.926.826.726.626.526.326.226.126.025.925.825.726.227.227.127.026.826.726.626.526.426.326.126.025.925.826.327.427.227.127.026.926.826.626.526.426.326.226.126.026.427.527.427.327.227.026.926.826.726.626.526.326.226.126.527.727.627.427.327.227.127.026.826.726.626.526.426.326.627.827.727.627.527.327.227.127.026.926.826.626.526.426.728.027.927.727.627.527.427.327.127.026.926.826.726.626.828.128.027.927.827.727.527.427.327.227.126.926.826.726.928.328.228.127.927.827.727.627.527.327.227.127.026.927.028.528.328.228.128.027.927.727.627.527.427.227.127.027.128.628.528.428.328.128.027.927.827.627.527.427.327.227.228.828.728.528.428.328.228.027.927.827.727.627.427.327.328.928.828.728.628.428.328.228.127.927.827.727.627.527.429.129.028.828.728.628.528.328.228.128.027.927.727.627.529.329.129.028.928.828.628.528.428.328.128.027.927.827.629.429.329.229.028.928.828.728.528.428.328.228.027.927.729.629.529.329.229.128.928.828.728.628.428.328.228.127.829.729.629.529.429.229.129.028.828.728.628.528.328.227.929.929.829.629.529.429.329.129.028.928.728.628.528.428.030.129.929.829.729.529.429.329.229.028.928.828.628.528.130.230.130.029.829.729.629.429.329.229.128.928.828.728.230.430.230.130.029.829.729.629.529.329.229.128.928.828.330.530.430.330.130.029.929.729.629.529.429.229.129.028.430.730.630.430.330.230.029.929.829.629.529.429.329.128.530.930.730.630.530.330.230.129.929.829.729.529.429.328.631.030.930.730.630.530.330.230.129.929.829.729.629.428.731.231.030.930.830.630.530.430.230.130.029.829.729.628.831.331.231.130.930.830.730.530.430.330.130.029.929.728.931.531.431.231.130.930.830.730.530.430.330.130.029.929.031.731.531.431.231.131.030.830.730.630.430.330.230.029.131.831.731.531.431.331.131.030.930.730.630.530.330.229.232.031.831.731.631.431.331.131.030.930.730.630.530.329.332.132.031.931.731.631.431.331.231.030.930.830.630.5續(xù)表平均回彈值Rm測(cè)區(qū)混凝土強(qiáng)度換算值（MPa）平均碳化深度dm(mm)0.00.51.01.52.02.53.03.54.04.55.05.5≥6.029.432.332.232.031.931.731.631.531.331.231.030.930.830.629.532.532.332.232.031.931.831.631.531.331.231.130.930.829.632.632.532.332.232.031.931.831.631.531.431.231.130.929.732.832.632.532.332.232.131.931.831.631.531.431.231.129.832.932.832.632.532.432.232.131.931.831.731.531.431.229.933.132.932.832.732.532.432.232.132.031.831.731.531.430.033.333.133.032.832.732.532.432.232.132.031.831.731.630.133.433.333.133.032.832.732.532.432.332.132.031.831.730.233.633.433.333.133.032.832.732.632.432.332.132.031.930.333.733.633.433.333.133.032.932.732.632.432.332.132.030.433.933.733.633.533.333.233.032.932.732.632.432.332.230.534.133.933.833.633.533.333.233.032.932.732.632.532.330.634.234.133.933.833.633.533.333.233.032.932.832.632.530.734.434.234.133.933.833.633.533.333.233.032.932.832.630.834.534.434.234.133.933.833.633.533.333.233.132.932.830.934.734.534.434.234.133.933.833.633.533.433.233.132.931.034.934.734.634.434.334.134.033.833.733.533.433.233.131.135.034.934.734.634.434.334.134.033.833.733.533.433.231.235.235.034.934.734.634.434.334.134.033.833.733.533.431.335.335.235.034.934.734.634.434.334.134.033.833.733.531.435.535.335.235.034.934.734.634.434.334.134.033.833.731.535.735.535.335.235.034.934.734.634.434.334.134.033.831.635.835.735.535.435.235.034.934.734.634.434.334.134.031.736.035.835.735.535.435.235.034.934.734.634.434.334.131.836.136.035.835.735.535.435.235.134.934.734.634.434.331.936.336.136.035.835.735.535.435.235.134.934.834.634.432.036.536.336.136.035.835.735.535.435.235.134.934.834.632.136.636.536.336.136.035.835.735.535.435.235.134.934.832.236.836.636.536.336.136.035.835.735.535.435.235.134.932.336.936.836.636.536.336.136.035.835.735.535.435.235.132.437.136.936.836.636.536.336.136.035.835.735.535.435.232.537.337.136.936.836.636.536.336.136.035.835.735.535.432.637.437.337.136.936.836.636.536.336.136.035.835.735.532.737.637.437.337.136.936.836.636.536.336.136.035.835.732.837.837.637.437.337.136.936.836.636.536.336.136.035.832.937.937.837.637.437.337.136.936.836.636.536.336.136.033.038.137.937.737.637.437.337.136.936.836.636.436.336.133.138.238.137.937.737.637.437.237.136.936.836.636.436.3續(xù)表平均回彈值Rm測(cè)區(qū)混凝土強(qiáng)度換算值（MPa）平均碳化深度dm(mm)0.00.51.01.52.02.53.03.54.04.55.05.5≥6.033.238.438.238.137.937.737.637.437.237.136.936.836.636.433.338.638.438.238.137.937.737.637.437.237.136.936.836.633.438.738.638.438.238.137.937.737.637.437.237.136.936.733.538.938.738.538.438.238.037.937.737.537.437.237.136.933.639.038.938.738.538.438.238.037.937.737.537.437.237.133.739.239.038.938.738.538.438.238.037.937.737.537.437.233.839.439.239.038.938.738.538.438.238.037.937.737.537.433.939.539.439.239.038.838.738.538.338.238.037.837.737.534.039.739.539.339.239.038.838.738.538.338.238.037.837.734.139.939.739.539.339.239.038.838.738.538.338.238.037.834.240.039.839.739.539.339.239.038.838.638.538.338.138.034.340.240.039.839.739.539.339.139.038.838.638.538.338.134.440.340.240.039.839.639.539.339.139.038.838.638.438.334.540.540.340.240.039.839.639.539.339.138.938.838.638.434.640.740.540.340.140.039.839.639.439.339.138.938.838.634.740.840.740.540.340.139.939.839.639.439.339.138.938.734.841.040.840.640.540.340.139.939.839.639.439.239.138.934.941.241.040.840.640.440.340.139.939.739.639.439.239.035.041.341.141.040.840.640.440.240.139.939.739.539.439.235.141.541.341.140.940.840.640.440.240.139.939.739.539.435.241.641.541.341.140.940.740.640.440.240.039.939.739.535.341.841.641.441.341.140.940.740.540.440.240.039.839.735.442.041.841.641.441.241.140.940.740.540.340.240.039.835.542.141.941.841.641.441.241.040.940.740.540.340.140.035.642.342.141.941.741.641.441.241.040.840.740.540.340.135.742.542.342.141.941.741.541.441.241.040.840.640.540.335.842.642.442.242.141.941.741.541.341.241.040.840.640.435.942.842.642.442.242.041.941.741.541.341.140.940.840.636.042.942.842.642.442.242.041.841.641.541.341.140.940.736.143.142.942.742.542.442.242.041.841.641.441.341.140.936.243.343.142.942.742.542.342.142.041.841.641.441.241.136.343.443.243.142.942.742.542.342.141.941.841.641.441.236.443.643.443.243.042.842.742.542.342.141.941.741.541.436.543.843.643.443.243.042.842.642.442.342.141.941.741.536.643.943.743.543.343.243.042.842.642.442.242.041.941.736.744.143.943.743.543.343.142.942.842.642.442.242.041.836.844.244.143.943.743.543.343.142.942.742.542.442.242.036.944.444.244.043.843.643.443.343.142.942.742.542.342.1續(xù)表平均回彈值Rm測(cè)區(qū)混凝土強(qiáng)度換算值（MPa）平均碳化深度dm(mm)0.00.51.01.52.02.53.03.54.04.55.05.5≥6.037.044.644.444.244.043.843.643.443.243.042.942.742.542.337.144.744.544.344.244.043.843.643.443.243.042.842.642.437.244.944.744.544.344.143.943.743.543.443.243.042.842.637.345.144.944.744.544.344.143.943.743.543.343.142.942.837.445.245.044.844.644.444.244.143.943.743.543.343.142.937.545.445.245.044.844.644.444.244.043.843.643.443.343.137.645.645.445.245.044.844.644.444.244.043.843.643.443.237.745.745.545.345.144.944.744.544.344.144.043.843.643.437.845.945.745.545.345.144.944.744.544.344.143.943.743.537.946.045.845.645.445.245.044.944.744.544.344.143.943.738.046.246.045.845.645.445.245.044.844.644.444.244.043.838.146.446.246.045.845.645.445.245.044.844.644.444.244.038.246.546.346.145.945.745.545.345.144.944.744.544.344.238.346.746.546.346.145.945.745.545.345.144.944.744.544.338.446.946.746.546.346.145.845.645.445.345.144.944.744.538.547.046.846.646.446.246.045.845.645.445.245.044.844.638.647.247.046.846.646.446.246.045.845.645.445.245.044.838.747.447.146.946.746.546.346.145.945.745.545.345.144.938.847.547.347.146.946.746.546.346.145.945.745.545.345.138.947.747.547.347.146.946.746.446.246.045.845.645.445.239.047.847.647.447.247.046.846.646.446.246.045.845.645.439.148.047.847.647.447.247.046.846.646.446.246.045.845.639.248.248.047.847.547.347.146.946.746.546.346.145.945.739.348.348.147.947.747.547.347.146.946.746.546.346.145.939.448.548.348.147.947.747.547.247.046.846.646.446.246.039.548.748.548.248.047.847.647.447.247.046.846.646.446.239.648.848.648.448.248.047.847.647.447.246.946.746.546.339.749.048.848.648.448.147.947.747.547.347.146.946.746.539.849.248.948.748.548.348.147.947.747.547.347.146.946.639.949.349.148.948.748.548.348.047.847.647.447.247.046.840.049.549.349.148.848.648.448.248.047.847.647.447.247.040.149.749.449.249.048.848.648.448.247.947.747.547.347.140.249.849.649.449.249.048.748.548.348.147.947.747.547.340.350.049.849.549.349.148.948.748.548.348.147.847.647.440.450.149.949.749.549.349.148.948.648.448.248.047.847.640.550.350.149.949.749.449.249.048.848.648.448.248.047.740.650.550.350.049.849.649.449.249.048.748.548.348.147.940.750.650.450.250.049.849.549.349.148.948.748.548.348.140.850.850.650.450.149.949.749.549.349.148.848.648.448.2續(xù)表平均回彈值Rm測(cè)區(qū)混凝土強(qiáng)度換算值（MPa）平均碳化深度dm(mm)0.00.51.01.52.02.53.03.54.04.55.05.5≥6.040.951.050.850.550.350.149.949.749.449.249.048.848.648.441.051.150.950.750.550.350.049.849.649.449.248.948.748.541.151.351.150.950.650.450.250.049.849.549.349.148.948.741.251.551.251.050.850.650.450.149.949.749.549.349.148.841.351.651.451.251.050.750.550.350.149.949.649.449.249.041.451.851.651.351.150.950.750.550.250.049.849.649.449.141.552.051.751.551.351.150.850.650.450.250.049.749.549.341.652.151.951.751.451.251.050.850.650.350.149.949.749.541.752.352.151.851.651.451.250.950.750.550.350.149.849.641.852.552.252.051.851.651.351.150.950.750.450.250.049.841.952.652.452.251.951.751.551.351.050.850.650.450.249.942.052.852.652.352.151.951.651.451.251.050.850.550.350.142.153.052.752.552.352.051.851.651.451.150.950.750.550.242.253.152.952.752.452.252.051.751.551.351.150.850.650.442.353.353.152.852.652.452.151.951.751.551.251.050.850.642.453.553.253.052.852.552.352.151.851.651.451.250.950.742.553.653.453.252.952.752.552.252.051.851.551.351.150.942.653.853.553.353.152.952.652.452.251.951.751.551.351.042.754.053.753.553.253.052.852.652.352.151.951.651.451.242.854.153.953.653.453.252.952.752.552.352.051.851.651.342.954.354.053.853.653.353.152.952.652.452.252.051.751.543.054.454.254.053.753.553.353.052.852.652.352.151.951.743.154.654