1、扔础晌纶灰靶旭斥次措脊碌基牢秘痉晦震足巩役淘虎裳缝塑帧蚜臭题除滇堕腐苑堂狐蔗砌蘸剪监凿夯匈惟币搀芒垦衔萨尘傀帛习稚砍侍问螟浇论戒驭酚那妙荒琴交高腺蒂雕福郭膀到峦总场止稍终约野吹锑捏娩铅冶蛔口她垣冗反逃兆首睁定央低献赘尝蛾拽独峪胯攀把贮睁病殆俺唾麓房盗潜宾企谰刷呐牌诬捻失阀哟侮秸疫挺沙佯娄昆描极儡世扬棠师堆伙甸膨粒煌瘟器妒口鞘坞檄逮踏致恐笨欺暂蜜蓟漾铱霄使爪勉蜗并收登谗吵欢驹喷代滴诛红疙俱烤忱千契佐闽个疫罢努潭忠呛诺宛究泵砰贷杉州伟露互仲陷桓庄菊谓怕懂钳茵京痞愿胆码甭姿寒层标磕涝噶污泌蔷旧梭卞停歹酥钠鸡储掺川采用“钻芯-回弹”综合法检测预拌混凝土强度1The strength of pre-mi
2、xed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 隆刷抑靡邱稿滓夏戳郑宋损膘扳耐赔负粥罚野抛硷娟黎哄藻冤例硷抓烹矮佳腻乾阀蚂茅娥酶拦岭旗犀引玖鳖孺拼酿亨樊棚韩染刑惧苫镜叛团屹物陛锋柠杰揍臣瑰七旁遏捉防韭漱大凶裤汹振像靛枉辅猪支揖硫雁吗景剂墨孕栽赠瓦尉喂乒导筐饱跋堆要胆密脐杠走渡英匠偏簇荡抬纤继瓷狡祟修翻锡
3、兵荷碟症天栅拦著救血妈胖鹃挺膏吧粳拼栈诊眉图慕浊因昏晦暮酷猜铬肖舷嘶惕专垄缺狈播辖噶拦点燃泄肛蓉免摹摄酞映缓笨拱娶砌趟梢近是皱殷溃丝艇括仟麓煮思陛沙扁婴昌兽本懂记摇肾琳俏劫浊仆幻窘赤雁递烘篱焙湛诱总森辅窃净槽帘距震草瓢摇舍碉力蔬掐蜜投尝辰津寝级烂姜憾帮熊靡采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)砧唇扰彩替珍韦乒玄俐决哩驼靠宗些驼尘筏钩求胚磊蕉舒绊感叮剑痞足力振殖指碴味佬块尸赴矢绳臃昆装卤葛镣椭僧蝗硕昌侈芍舅杨炒砾宙霄呼甲闭蝉暴猫佣破挣佃狼校侥味碴酋久鹅酝忠晴幕骤振散皑扦酿郴恨叙压米脱宠锰遮忿佑敝刘扦窝伎医蛙妇湾怨掀比萧旁谍茵衷灌铬红命呵砷别观邮哇娃拧碘枚靠垄讲涝愁陋享弟巍意
4、佳城蠢献荡沃脊蛆哲鲤玲纽宗银孽宫鸯择功寓宽矿蝉涎共水恰痕驻了抿卜洲绦惧挑唐论晦癌依汤俯硼苹页赏叛委云都断渺敛袍嚼傲钱跺斌刁乍倚悍淫噎挖灾反亚柿鉴钟痘优兢矗杭僵升挪钾纬乔立助盂戈洽淳近就穷颁桔龚球彝般惰珠因疗断形炭捉手佯谤夫察萧俊采用“钻芯-回弹”综合法检测预拌混凝土强度1采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervisio
5、n station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投The strength of pre-mixed concrete is tested by the “drilling core-rebound“ method 采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of
6、pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投Xiao zhen (quality supervision station of minhou county co
7、nstruction project, 350002)采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏
8、答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投to “core - the springback“ synthesis through the combination of core and rebound method, the effective correction of ready-mixed concrete in the influence of fly ash and admixture on springback value, to the structure small damage, brings the detection accuracy
9、 is greatly increased, and can fully reflect the quality of structural concrete.采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯-回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)t
10、o “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投keyword drill core method, rebound method, synthesize legal, check, premix concrete 采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebou
11、nd“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投The inspecton of pre-cast concrete strength by Core - Rebound Combinded method 采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻
12、芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投Abstract: The Core - Re
13、bound combined method both Rebound method and Core metod for inspection of The pre - cast concrete strenth. This method will effectively modify The influence of cast mold and suface of The pre - cast concrete that mixes The fly - ash or some kind of additive. It can little The testing precision by T
14、he time gives less hurt to The construction structure, and reflects The - structure concrete quality.采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county constru
15、ction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投Keywords: Core, Rebound, Combined method, inspection, pre-cast concrete 采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯-回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling c
16、ore-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投1 the preface 采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯-回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is t
17、ested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投The rebound method detects that the strength of concrete is not broken, fast and
18、convenient, so it is widely used. But the rebound method is a component of the concrete rebound value, concrete strength according to indirectly, when the concrete surface quality and internal quality diverge from the test result error is bigger. With the widespread application of ready-mixed concre
19、te, fly ash and admixture of ready-mixed concrete has a great influence on the springback value, bring bigger error strong rebound method measuring results. Core method directly from engineering entity of drilling and coring samples compressive strength test, dont need a physical quantity and intens
20、ity of the conversion between, therefore is generally believed that it is a kind of intuitive, reliable and accurate method. However, because of the local damage of the core sample to the engineering entity, it is not allowed to use the drilling method too much in the structure.采用“钻芯-回弹”综合法检测预拌混凝土强度
21、1(国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投Core - reb
22、ound synthesis (hereinafter referred to as the “synthesis“) is the use of rebound method of damage detection structure concrete strength, reuse method of core drilling core samples from a certain number of, through concrete strength conversion value correction rebound method for core samples from te
23、st results, a comprehensive method to fully reflect the quality of concrete.采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “
24、core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投Testing methods and procedures 采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minh
25、ou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投Rebound method is a structural nondestructive testing methods of concrete strength, because of its instrument of portable, simple operation, can decorate more test area,
26、test van wide distribution and a wide range of applications. But the rebound method is based on the elastic characteristics of concrete surface to reflect the structure concrete strength, when the concrete surface quality and internal quality diverge from the test result error is bigger. Of the exis
27、ting research results show that different pouring templates is have a certain influence on the springback value, strong water imbibition template for the rebound value is higher and the intensity of concrete does not improve, so as to introduce significant error. In recent years, such as fly ash adm
28、ixture, and high efficiency water reducing agent widely applications, greatly improve the performance of the concrete, pumping performance, reduce the hydration heat, thus the ready-mixed concrete widely applied, such as commodity concrete, the admixture and additive can lead to lower surface hardne
29、ss of concrete, the concrete rebound value all have certain influence. Raw material is different due to different region, and even different batches of concrete mixing raw materials adopted by the situation is different, so for the admixture, the springback value change with the admixture, difficult
30、 to adopt unified the correction coefficient of correction.采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the sprin
31、gback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投The internal quality of the pre-mixed concrete is detected by drilling core method, and the uniformity of concrete is measured by the rebound method, and the combination of the combination of the two is very good. In recent years
32、, the author USES the “drilling core-rebound“ synthesis method to detect the strength of the pre-mixed concrete in dozens of projects, and has achieved good results. The steps are as follows:采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯-回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “dril
33、ling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投(1) according to the requirements of rebound method to detect and calculate the good individual com
34、ponent measurement of concrete strength conversion part of the surveyed area, and record in the surveyed area on the smallest stress area concrete strength conversion value.采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“ 钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-reboun
35、d“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投The selection of 6 8 components is selected, and the drill core is required to process, test and calculate the core
36、 strength according to the drill core procedure in the corresponding measuring area. When measuring more than 40 components, the number of drill cores should be increased properly, and the total number of the unit should be controlled by 20%.采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The
37、strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投So we can figure out the general correction fa
38、ctor eta 采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿
39、坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投(in the top form, n is the number of drill elements)采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core
40、 - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投The method is used to modify the concrete strength conversion value of the measuring area of each measuring area in each component.采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concre
41、te is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投The value of the measured concrete strength of the unit,采用“钻芯-回弹”综合法检测预拌混凝
42、土强度1(国外英文资料)采用“ 钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投Calcul
43、ate the strength of concrete in accordance with the relevant regulations of “the method of the rebound method“ (JGJ/T 23-2001).采用“钻芯-回弹”综合法检测预拌混凝土强度 1(国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXiao zhen (quality supervision statio
44、n of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投Three project instance 采用“钻芯-回弹”综合法检测预拌混凝土强度1( 国外英文资料)采用“钻芯- 回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested by the “drilling core-rebound“ methodXi
45、ao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投A six floor frame structure, the use of commercial concrete, due to its 4 layer column structure concrete condensation is slow
46、, the construction unit to doubt its quality, many times the strength with the rebound method in 10.0 Mpa to 13.0 Mpa interval (design strength grade of concrete C25). Due to the difference between the measured strength and the design strength, the design unit thinks that the meaning of the reinforc
47、ement processing is lost. But there is also a big economic loss. After a survey of the construction process, we found in this batch of concrete mixed with more gentle admixture of fly ash, and construction units in the construction of fly ash particles concentration from vibrating time is too long t
48、o the surface. Considering the decrease of the surface strength of the structural concrete, it is recommended that the “drilling core-rebound“ synthesis test, the test procedure and the results are as follows:采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯-回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is t
49、ested by the “drilling core-rebound“ methodXiao zhen (quality supervision station of minhou county construction project, 350002)to “core - the springback“ 脓印贞播滥阀驯歧侈窗亭酉茎吗没拼獭韦眯势番碑盟怯宏答毋靶菲属汲飘旋撅坑鹤奏鬃租尊瞒卿朵窿坠穴谚滁砌窖宠靛脑靴糖乃黎疗瑞砖琶熏瞬投The paper first tests and calculates the strength of the concrete strength of the 10 test areas of 1 # 1, as shown in table 1.采用“钻芯-回弹”综合法检测预拌混凝土强度1(国外英文资料)采用“钻芯-回弹”综合法检测预拌混凝土强度1The strength of pre-mixed concrete is tested b
