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混凝土被工地退回搅拌站该若何办？

来历：http://zhaoyanfilter.com/ 时候：2022-03-18

头几天，有个客户给咱们打德律风征询，他们搅拌站送到工地上的混凝土，被退回了，不晓得该若何处置，起首呢，咱们谁都不但愿如许的任务发生， 可是万一呈现了如许的任务，咱们的混凝土搅拌站该当若何去处置才好呢？信任这是良多搅拌站都比拟头疼的一个题目。
A few days ago, a customer called us to inquire. The concrete sent to the construction site by their mixing plant was returned. I don't know how to deal with it. First of all, none of us wants such a thing to happen, but in case of such a thing, how should our concrete mixing plant deal with it? I believe this is a headache for many mixing plants.
明天咱们就这个混凝土被退回的任务特地 说一下处置方式。
Today, let's talk about the solution to the return of concrete.
起首咱们该当主动地处置被退回的混凝土，以到达迷信公道地操纵退回混凝土，削减废物，增添效益。退回站内的混凝土，均应起首斟酌下降品级操纵。 在没法下降品级操纵时，应按照环境分清缘由，判定混凝土的机能，而后停止公道的处置。
First of all, we should actively deal with the returned concrete, so as to make scientific and rational use of the returned concrete, reduce waste and increase benefits. For the concrete returned to the station, the grade shall be reduced first. When the grade cannot be reduced, the reason shall be distinguished according to the situation, the performance of concrete shall be judged, and then reasonable treatment shall be carried out.
因混凝土出站前未经查抄或查抄不严、判定失误等缘由，导致分歧格的混凝土发往工地，形成施工方拒收。退回后，应分以下两种环境处置：
The unqualified concrete is sent to the construction site and rejected by the construction party due to the reasons such as the concrete is not inspected before leaving the station, lax inspection, wrong judgment and so on. After returning, it shall be handled in the following two cases:
1、坍落渡过大（或离析），应按照现实环境增添同配比的干料或稠沙浆，疾速搅拌不少于90s，经查抄无干料块，坍落度适合设想请求，且现实水胶比不大于现实 水胶比喻可出站。若是处置后坍落度小于出站请求，应插手恰当外加剂调剂到知足施工请求的坍落度方可出站。
1. If the slump is too large (or segregation), the dry material or thick mortar with the same proportion shall be added according to the actual situation, and the rapid mixing shall not be less than 90s. After inspection, there is no dry material block, the slump meets the design requirements, and the actual water binder ratio is not greater than the theoretical water binder ratio, so it can leave the station. If the slump after treatment is less than the outbound requirements, an appropriate amount of admixture shall be added to adjust the slump to meet the construction requirements before outbound.
2、坍落渡过小，应恰当增添水泥，而后加外加剂，并强迫搅拌，直到坍落度到达出站请求为止。但应注重，外加剂的掺量不得跨越保举掺量的*大值。
2. If the slump is too small, the cement shall be added appropriately, then the admixture shall be added, and forced mixing shall be carried out until the slump meets the requirements of the station. However, it should be noted that the dosage of admixture shall not exceed the * maximum value of the recommended dosage.
因运输、泵送、浇筑等各类缘由形成的退回混凝土，起首由罐车司机过磅，质检员按照罐车司机供给的过磅单及该罐车的皮重计较残剩方量，而后按照同品级或 下降品级操纵，别离接纳以下处置方式：
For the returned concrete caused by transportation, pumping, pouring and other reasons, the tank truck driver shall weigh it first, and the quality inspector shall calculate the residual volume according to the weighing sheet provided by the tank truck driver and the tare weight of the tank truck, and then use it according to the same grade or lower grade, and adopt the following treatment methods respectively:
1、同品级操纵，耽搁时候在2h之内，处置后应保障水泥用量比原共同比进步10～15kg/m3，外加剂进步0.1%～0.3%。或间接下降一个强度品级，恰当增添外加剂掺量 停止调剂。耽搁时候在2～4h，处置后应保障水泥用量比原共同比进步20～40kg/m3，外加剂进步0.4%～0.6%。或间接下降两个强度品级，恰当增添外加剂掺量停止调剂。
1. For the same grade of use, the delay time is within 2H. After treatment, the cement dosage shall be increased by 10 ~ 15kg / m3 compared with the original mix proportion, and the admixture shall be increased by 0.1% ~ 0.3%. Or directly reduce one strength grade and appropriately increase the amount of admixture for adjustment. The delay time is 2 ~ 4H. After treatment, the cement dosage shall be increased by 20 ~ 40kg / m3 compared with the original mix proportion, and the admixture shall be increased by 0.4% ~ 0.6%. Or directly reduce two strength grades and appropriately increase the amount of admixture for adjustment.
2、下降品级操纵，必须以下降品级后的混凝土与原品级混凝土所用原资料完整不异为根本，且仅合用于C40及C40以下的混凝土的处置。
2. The use of reduced grade must be based on the fact that the raw materials of the reduced grade concrete and the original grade concrete are exactly the same, and it is only applicable to the treatment of C40 and below.
3、耽搁时候跨越4h，应报废或用作非承重低品级混凝土操纵。
3. If the delay time exceeds 4h, it shall be scrapped or used as non load-bearing low-grade concrete.
4、若坍落度低于设想请求30～50mm，可按运输单上的方量，每方增添0.5kg泵送剂。把接料斗部位的泵送剂突入罐内，开动罐体疾速扭转3min，上车察看混凝土拌合物 是不是适合，若适合请求，便可操纵。混凝土在卸料槽中不流淌时，应先估量罐内混凝土方量，而后按每方加1kg计较插手泵送剂数目，加泵送剂后按上述方式请求的加水、 快转、察看等步骤操纵。
4. If the slump is less than 30.5kg per cubic meter, it can be pumped according to the design requirement. Flush the pumping agent at the receiving hopper into the tank, start the tank to rotate quickly for 3min, get on the vehicle and observe whether the concrete mixture is suitable. If it meets the requirements, it can be used. When the concrete does not flow in the discharge tank, the concrete volume in the tank shall be estimated first, and then the amount of pumping agent added shall be calculated by adding 1kg per square. After adding pumping agent, the operation shall be carried out according to the steps of water addition, fast rotation, observation and so on required by the above method.
在初凝时候内的混凝土，因为气温较高、运距较远、压车时候较长等形成混凝土坍落度丧失较大，可经由进程实验增添同型号的泵送剂或减水剂， 但增添与本来已加的总和掺量不能跨越外加剂*大掺量的20%。应逐步增添，先少加，掺入后，搅拌运输车必须疾速动弹2min摆布，测定坍落度是不是适合请求。 对跨越初凝时候的混凝土应烧毁，不能再操纵。混凝土浇筑前障碍的时候越长，混凝土强度丧失越严峻，该当引发充足正视。
For the concrete within the initial setting time, due to the high temperature, long transportation distance and long rolling time, the concrete slump loss is large. The pumping agent or water reducing agent of the same model can be added through the test, but the total amount of added and previously added shall not exceed 20% of the large amount of admixture. It shall be added gradually and less at first. After mixing, the mixer truck must rotate quickly for about 2min to determine whether the slump meets the requirements. The concrete exceeding the initial setting time shall be discarded and cannot be used again. The longer the stagnation time before concrete pouring, the more serious the loss of concrete strength, which should be paid enough attention.
莱州聚峰机器http://zhaoyanfilter.com无限公司是一家特地出产混凝土搅拌站装备，打鱼注册送分 装备，和混凝土搅拌站所需的各类配套装备的厂家，产物研发经历丰硕，装备机能 杰出，操纵寿命久长，业界口碑杰出，案例遍布各地。若是您有装备须要，请实时拨打网站热线，接洽咱们！
Laizhou Jufeng Machinery Co., Ltd http://zhaoyanfilter.com Ltd. is a manufacturer specializing in the production of concrete mixing plant equipment, concrete mixing truck equipment and various supporting equipment required by concrete mixing plant. It has rich product R & D experience, excellent equipment performance, long service life, good reputation in the industry and cases all over the world. If you need equipment, please call the website hotline in time and contact us!
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混凝土被工地退回搅拌站该若何办？

作者：中科聚峰打鱼注册送分 厂家 时候：2022-03-18

头几天，有个客户给咱们打德律风征询，他们搅拌站送到工地上的混凝土，被退回了，不晓得该若何处置，起首呢，咱们谁都不但愿如许的任务发生， 可是万一呈现了如许的任务，咱们的混凝土搅拌站该当若何去处置才好呢？信任这是良多搅拌站都比拟头疼的一个题目。
A few days ago, a customer called us to inquire. The concrete sent to the construction site by their mixing plant was returned. I don't know how to deal with it. First of all, none of us wants such a thing to happen, but in case of such a thing, how should our concrete mixing plant deal with it? I believe this is a headache for many mixing plants.
明天咱们就这个混凝土被退回的任务特地 说一下处置方式。
Today, let's talk about the solution to the return of concrete.
起首咱们该当主动地处置被退回的混凝土，以到达迷信公道地操纵退回混凝土，削减废物，增添效益。退回站内的混凝土，均应起首斟酌下降品级操纵。 在没法下降品级操纵时，应按照环境分清缘由，判定混凝土的机能，而后停止公道的处置。
First of all, we should actively deal with the returned concrete, so as to make scientific and rational use of the returned concrete, reduce waste and increase benefits. For the concrete returned to the station, the grade shall be reduced first. When the grade cannot be reduced, the reason shall be distinguished according to the situation, the performance of concrete shall be judged, and then reasonable treatment shall be carried out.
因混凝土出站前未经查抄或查抄不严、判定失误等缘由，导致分歧格的混凝土发往工地，形成施工方拒收。退回后，应分以下两种环境处置：
The unqualified concrete is sent to the construction site and rejected by the construction party due to the reasons such as the concrete is not inspected before leaving the station, lax inspection, wrong judgment and so on. After returning, it shall be handled in the following two cases:
1、坍落渡过大（或离析），应按照现实环境增添同配比的干料或稠沙浆，疾速搅拌不少于90s，经查抄无干料块，坍落度适合设想请求，且现实水胶比不大于现实 水胶比喻可出站。若是处置后坍落度小于出站请求，应插手恰当外加剂调剂到知足施工请求的坍落度方可出站。
1. If the slump is too large (or segregation), the dry material or thick mortar with the same proportion shall be added according to the actual situation, and the rapid mixing shall not be less than 90s. After inspection, there is no dry material block, the slump meets the design requirements, and the actual water binder ratio is not greater than the theoretical water binder ratio, so it can leave the station. If the slump after treatment is less than the outbound requirements, an appropriate amount of admixture shall be added to adjust the slump to meet the construction requirements before outbound.
2、坍落渡过小，应恰当增添水泥，而后加外加剂，并强迫搅拌，直到坍落度到达出站请求为止。但应注重，外加剂的掺量不得跨越保举掺量的*大值。
2. If the slump is too small, the cement shall be added appropriately, then the admixture shall be added, and forced mixing shall be carried out until the slump meets the requirements of the station. However, it should be noted that the dosage of admixture shall not exceed the * maximum value of the recommended dosage.
因运输、泵送、浇筑等各类缘由形成的退回混凝土，起首由罐车司机过磅，质检员按照罐车司机供给的过磅单及该罐车的皮重计较残剩方量，而后按照同品级或 下降品级操纵，别离接纳以下处置方式：
For the returned concrete caused by transportation, pumping, pouring and other reasons, the tank truck driver shall weigh it first, and the quality inspector shall calculate the residual volume according to the weighing sheet provided by the tank truck driver and the tare weight of the tank truck, and then use it according to the same grade or lower grade, and adopt the following treatment methods respectively:
1、同品级操纵，耽搁时候在2h之内，处置后应保障水泥用量比原共同比进步10～15kg/m3，外加剂进步0.1%～0.3%。或间接下降一个强度品级，恰当增添外加剂掺量 停止调剂。耽搁时候在2～4h，处置后应保障水泥用量比原共同比进步20～40kg/m3，外加剂进步0.4%～0.6%。或间接下降两个强度品级，恰当增添外加剂掺量停止调剂。
1. For the same grade of use, the delay time is within 2H. After treatment, the cement dosage shall be increased by 10 ~ 15kg / m3 compared with the original mix proportion, and the admixture shall be increased by 0.1% ~ 0.3%. Or directly reduce one strength grade and appropriately increase the amount of admixture for adjustment. The delay time is 2 ~ 4H. After treatment, the cement dosage shall be increased by 20 ~ 40kg / m3 compared with the original mix proportion, and the admixture shall be increased by 0.4% ~ 0.6%. Or directly reduce two strength grades and appropriately increase the amount of admixture for adjustment.
2、下降品级操纵，必须以下降品级后的混凝土与原品级混凝土所用原资料完整不异为根本，且仅合用于C40及C40以下的混凝土的处置。
2. The use of reduced grade must be based on the fact that the raw materials of the reduced grade concrete and the original grade concrete are exactly the same, and it is only applicable to the treatment of C40 and below.
3、耽搁时候跨越4h，应报废或用作非承重低品级混凝土操纵。
3. If the delay time exceeds 4h, it shall be scrapped or used as non load-bearing low-grade concrete.
4、若坍落度低于设想请求30～50mm，可按运输单上的方量，每方增添0.5kg泵送剂。把接料斗部位的泵送剂突入罐内，开动罐体疾速扭转3min，上车察看混凝土拌合物 是不是适合，若适合请求，便可操纵。混凝土在卸料槽中不流淌时，应先估量罐内混凝土方量，而后按每方加1kg计较插手泵送剂数目，加泵送剂后按上述方式请求的加水、 快转、察看等步骤操纵。
4. If the slump is less than 30.5kg per cubic meter, it can be pumped according to the design requirement. Flush the pumping agent at the receiving hopper into the tank, start the tank to rotate quickly for 3min, get on the vehicle and observe whether the concrete mixture is suitable. If it meets the requirements, it can be used. When the concrete does not flow in the discharge tank, the concrete volume in the tank shall be estimated first, and then the amount of pumping agent added shall be calculated by adding 1kg per square. After adding pumping agent, the operation shall be carried out according to the steps of water addition, fast rotation, observation and so on required by the above method.
在初凝时候内的混凝土，因为气温较高、运距较远、压车时候较长等形成混凝土坍落度丧失较大，可经由进程实验增添同型号的泵送剂或减水剂， 但增添与本来已加的总和掺量不能跨越外加剂*大掺量的20%。应逐步增添，先少加，掺入后，搅拌运输车必须疾速动弹2min摆布，测定坍落度是不是适合请求。 对跨越初凝时候的混凝土应烧毁，不能再操纵。混凝土浇筑前障碍的时候越长，混凝土强度丧失越严峻，该当引发充足正视。
For the concrete within the initial setting time, due to the high temperature, long transportation distance and long rolling time, the concrete slump loss is large. The pumping agent or water reducing agent of the same model can be added through the test, but the total amount of added and previously added shall not exceed 20% of the large amount of admixture. It shall be added gradually and less at first. After mixing, the mixer truck must rotate quickly for about 2min to determine whether the slump meets the requirements. The concrete exceeding the initial setting time shall be discarded and cannot be used again. The longer the stagnation time before concrete pouring, the more serious the loss of concrete strength, which should be paid enough attention.
莱州聚峰机器http://zhaoyanfilter.com无限公司是一家特地出产混凝土搅拌站装备，打鱼注册送分 装备，和混凝土搅拌站所需的各类配套装备的厂家，产物研发经历丰硕，装备机能 杰出，操纵寿命久长，业界口碑杰出，案例遍布各地。若是您有装备须要，请实时拨打网站热线，接洽咱们！
Laizhou Jufeng Machinery Co., Ltd http://zhaoyanfilter.com Ltd. is a manufacturer specializing in the production of concrete mixing plant equipment, concrete mixing truck equipment and various supporting equipment required by concrete mixing plant. It has rich product R & D experience, excellent equipment performance, long service life, good reputation in the industry and cases all over the world. If you need equipment, please call the website hotline in time and contact us!