The act of sampling concrete samples of filling. Sampling form for testing concrete cubes. Compression test

It is advisable for the delivery to be carried out by the manufacturer of the mixture using ABS. The longest duration of transportation of concrete should not exceed the shelf life of its properties, which is specified in the application. The moment of delivery of concrete for the purpose of guaranteeing its quality is the beginning of unloading at construction site ABS. In this case, the unloading time of the concrete mixer truck should not exceed 60 minutes. 4. Rules for acceptance of the mixture at the construction site. The fact of acceptance of the quantity of the mixture is confirmed by the transport bill of lading, which is signed by the consumer upon completion of the incoming control operations (for example, the temperature of the mixture and determination of workability). In accordance with clause 6.4. GOST, no more than 20 minutes of time are allocated for incoming control of the mixture. I'll try concrete mixture directly taken from ABS in the amount necessary for carrying out various types of tests.

Concrete sampling report sample form

Skill hits the target where arrogance overshoots and uncertainty undershoots. 1. Training of a concrete plant operator Practical skills for laboratory assistants individual programs. 3.Accreditation of laboratories (authorization in ESS NLP) 4.Certification of laboratory personnel (testing laboratory assistant, test engineer) Contacts: 89260578673 For customers who are forced to obtain a concrete mixture sampling act and an act on the production of control samples of concrete, a new concrete mixture sampling act purpose sampling production of control samples of concrete A gift from the head of the Mostostroykhkhd laboratory has been sent. Soon a whole section will appear Sampling report concrete mixture, There is already a copy of the act of sampling concrete on the blog, Hurray 4 ACT of sampling (samples) of concrete mixture No. " " 201

There's nothing here!

Before loading the concrete mixture into the mold, it must be lubricated thin layer lubricants The selected sample of the concrete mixture is placed in the mold no later than 20 minutes from the moment of its selection. The concrete mixture is compacted in the forms using a metal bayonet with a diameter of 16 mm.

Attention

When compacting a hard mixture (less than 10 cm), the mold is placed on a vibrating platform and additionally vibrated until the concrete mixture is completely compacted. Samples are subject to demoulding one day after their manufacture. After stripping, the forms must be cleaned of concrete residues and lubricated with lubricant, thereby preparing them for subsequent tests.

Concrete sampling report

This will help the consumer, as a result, accept correct solution to select a concrete mix supplier. But also directly to the consumer to receive concrete required quality, you need to correctly formulate your own requirements already at the stage of concluding a contract for the supply of concrete. What needs to be reflected in the contract for the supply of concrete mixture 1.

Info

Determining what constitutes a batch of concrete supplied. Here it is advisable to accept the wording of GOST 18105-2010: a batch of concrete mixture is the volume of a mixture of homogeneous composition produced in certain time(for example, per shift), when the conditions for delivery and preparation of the mixture remained unchanged. 2. Application for the supply of a certain volume of concrete mixture.

Sampling report

The act of sampling is drawn up in a bilateral act. If the results of the incoming control are negative (for example, when it is not possible to raise the temperature of the mixture or restore the design workability), the concrete of this load is not subject to acceptance. 5. Procedure for restoring the design workability of the mixture. The decision to restore design workability is made by the person responsible for the construction.

The restoration procedure is carried out along with the ABS forwarding driver and an employee construction organization, who is responsible for construction control. The amount and type of plasticizer introduced into the mixture, the duration of mixing and the speed of rotation of the drum necessary to restore the design workability are provided for in technological regulations mixture manufacturer.

Concrete sampling act sample

It is advisable to also reflect this procedure, which provides the consumer with additional protection, in the concrete supply contract. Sample contract for the supply of concrete Date of introduction 01/01/91 This standard applies to concrete of all types in accordance with GOST 25192 and establishes methods for determining their strength in prefabricated and monolithic concrete and reinforced concrete structures and products (hereinafter referred to as structures), taking samples from structures, making control samples from these samples and determining the compressive strength of concrete, axial tension, splitting tension and bending tension (hereinafter referred to as strength) during destructive short-term static tests of samples. The standard should be applied, as a rule, during inspection and expert testing of the strength of concrete in the structures of existing and reconstructed buildings and structures.

Act on the production of control samples of concrete

DOWNLOAD FORM Bridges in the world

• September 4, 2017
• August 25, 2017
• June 22, 2016
• June 21, 2016
• April 25, 2016
• April 25, 2016
• March 24, 2014
• March 14, 2014
• February 6, 2014

• Bridges in the world September 4, 2017 Muromsky BridgeThe Muromsky Bridge is part of the bypass road project connecting the city of Murom, Vladimir region…

Occupational safety September 4, 2017 “Singing” Muromsky Bridge August 25, 2017 Unique cable-stayed bridge with an X-shaped pylon December 6, 2016 Concrete mixtures GOST 7473-2010 Foreman March 3, 2016 3-stage control log January 22, 2016 How to fill out the log welding work January 22, 2016 How to fill out a journal concrete works January 22, 2016 General work log (an example of filling out all sections) October 24, 2015 RD-11-02-2006 Search by…

Form of cement sampling report from the manufacturer

Claims regarding the number in this situation can only be made as a result of removing the formwork. This condition must be specified in the contract.

• for the quality of the mixture - 31 calendar days. This period necessary to be able to check control samples, which were selected at the time of acceptance of the mixture and were stored under normal conditions.
• 8.
  Rules for checking the achievement of design properties by concrete. The manufacturer must inform the consumer of the results of monitoring the strength of concrete at intermediate and design ages, which are specified in the application, no later than 3 days after the tests. The consumer can carry out a control check of the standardized quality indicators of concrete by testing control samples that are selected from the mixture at entrance control, the fact of compliance with the requirements of individual standards.

Concrete sampling report, sample fill

During such a check, the consumer has the right to demand that the manufacturer provide the opportunity to familiarize himself with the records in executive documentation, which relate to the control of concrete of specific replacement batches. The procedure for conducting and organizing inspections is established in the contract. 9. Warranties provided by the manufacturer.

Guarantees for achieving the design properties of concrete are given by the manufacturer only if the builders confirm the implementation of the technology correct installation concrete. Decision on warranty obligations accepted after confirmation of the implementation of the concrete laying technology by a third party. 10. Procedure for resolving controversial issues. An independent testing laboratory may be involved to resolve controversial issues regarding the design properties of concrete from a third party.

Concrete sampling report sample

It is allowed to use cylinders with a diameter of 44 to 150 mm, a height of 0.8 to 2.0 diameters when determining compressive strength, from 0.4 to 2.0 diameters when determining tensile strength during splitting, and from 1.0 to 4. 0 diameters when determining axial tensile strength. For all types of tests, a sample with working section dimensions (150 ´ 150) mm is taken as the base one. 1.2.2. Minimum size sample (diameter and height of the cylinder, edge of the cube, side cross section prism) must exceed the maximum nominal size of the coarse aggregate used to make the concrete of the structure from which the test sample is taken, if it does not exceed 70 mm by at least: 2 times for samples tested in compression 3 times for samples tested in compression tested for tension.
1.3. Samples are tested in batches.

Act of sampling and samples of concrete

At the current pace of development of construction, companies involved in it are interested in the quality of purchased building materials. Concrete, by its properties, is one of the main materials that influences the timing and quality of commissioned objects. To identify deficiencies in a timely manner, there is a procedure for removing samples.
Sampling of concrete Control of the properties and quality of concrete declared by the manufacturer is determined using sampling regulated by GOST and their subsequent testing. A sample is a certain amount of concrete mixture from one composition, selected during the production of one batch or one vehicle transporting concrete, intended for the preparation of one or several series of samples. In accordance with existing rules, the sample is taken from the middle of the batch or concrete mixer truck.

The number of samples in each series must correspond to that given in table. 1. 1. Sampling of petroleum products (oil or fuel): When submitting samples to the laboratory, the following is required: - Information about regulatory documentation: GOST, TU or ISO. or an indication of the brand (for example, diesel fuel “L-0.2-40 GOST 305-82” or oil M16G2tss) 2. Sampling of foam concentrate: When submitting samples to the laboratory, the following information must be provided.

— Certificate of the Marine or River Register (if available). — Sampling location — Multiplicity ship system fire extinguishing - Concentration of the foaming agent used. Certificate of sampling of the foaming agent (download) with the seal and signatures of interested parties. A sample of filling out a selection act can be seen in the Sample Acts section. 3. Sampling of oily water: It should be taken into 4 (four) clean glass containers with a volume of at least 0.5 liters.

When monitoring in production, samples of the concrete mixture must be taken based on the test objectives and entered into the sampling report:

• at the place where the concrete mixture is laid, if a product or structure is being produced that is intended for immediate placement;
• at the place of preparation when loading into a container, if the concrete is produced for tempering.

Compilation rules

A sample should be taken immediately before starting the filling process from the middle of the batch. If the concrete mixture is supplied continuously (for example, using concrete pumps or conveyor belts), then samples should be taken at least three times within a 10-minute interval. The number of intervals can be arbitrary - as many as needed.

The sample volume must be sufficient to allow the quality of the mixture to be monitored in at least two parameters.

The sample should be stirred immediately before testing unless it contains an additive or is not preheated. In this case, it should not be mixed.

The maximum time after which the selected mixture should be analyzed is 10 minutes. After this interval, if tests have not been carried out, a new sample must be taken.

The temperature of the mixture when taking a sample and at the end of the test should not differ by more than 5 degrees Celsius. In addition, it is necessary to exclude moisture loss or, on the contrary, its penetration from the moment the sample is taken until the start of testing.

Testing of equipment and measuring instruments is carried out in accordance with GOST 8.001, GOST 8.326, GOST 8.383.

The results of the study are included in the sampling report. It must contain the following information:

• information about the organization that produced the concrete mixture;
• name of the mixture according to GOST 7473;
• time and place of analysis;
• mixture temperature;
• name of the quality indicator;
• research results for various indicators and the arithmetic average result.

Skill hits the target where arrogance overshoots and uncertainty undershoots.

1. Concrete plant operator training [email protected] 2. Practical skills for laboratory assistants according to individual programs. 3. Accreditation of laboratories (authorization in ESS NLP) 4. Certification of laboratory personnel (testing laboratory assistant, test engineer)

Contacts: 89260578673

For customers who are forced to look out for a concrete mixture sampling report and a certificate for the production of control concrete samples, a new concrete mixture sampling report

purpose of sampling production of control samples of concrete

A gift from the head of the Mostostroykhkhd laboratory has been sent

sampling (sampling) of concrete mixture No. ______

"____"_____________ 201__

Name of material ___concrete mixture BST(M) V P F W________

Organization performing the work ////

Purpose of sampling: production of control samples to determine physical and mechanical parameters concrete and concrete mixture indicators.

Product supplier (passport): _______________________________________________________

name of the supplier organization

Samples were taken _____bucket, trowel

equipment used

Samples were selected in accordance with __GOST 7473 GOST 10181 GOST 10180 GOST 18105____

Contract for the supply of concrete

GOST 7473-2010 obliges the manufacturer of concrete mixtures to “ensure the production of concrete at specified quality indicators... in accordance with the supply contract.”

This GOST also provided for the right of the consumer to receive from the manufacturer, before the start of delivery of concrete, information on the results of preliminary tests of concrete of this ... composition and concrete for all indicators specified in the supply contract. This will help the consumer, as a result, make the right decision when choosing a concrete mix supplier.

But in order to receive concrete of the required quality directly to the consumer, it is necessary to correctly formulate their own requirements already at the stage of concluding a contract for the supply of concrete.

What needs to be reflected in the contract for the supply of concrete mix

Determining what constitutes a batch of concrete supplied.

Here it is advisable to adopt the formulation of GOST 18105-2010: a batch of concrete mixture is a volume of a mixture of homogeneous composition produced over a certain time (for example, per shift), when the conditions for delivery and preparation of the mixture remained unchanged.

2. Application for the supply of a certain volume of concrete mixture.

An application in the established form is a mandatory attachment to the contract. When ordering concrete of a given quality, the consumer indicates in the application:

Required strength of concrete at design age

Design class of concrete (B, Bt)

Workability - grade according to cone draft (for example, P3), or specific OK values ​​in centimeters. (for example, 16cm.)

The required strength of concrete at an intermediate age (for example, during formwork removal)

Temperature at the time of delivery of the mixture

Storability of properties over time, minutes

Delivery schedule and date

Maximum aggregate size

If necessary = frost resistance grade

If necessary = the lowest average concrete strength of each batch Rm,min

If necessary = waterproof grade

If necessary = other indicators.

The quantity of concrete ordered must be a multiple of the capacity of the ABS drum (concrete mixer truck), smallest number shipment 1 cubic meter.

It is advisable for the delivery to be carried out by the manufacturer of the mixture using ABS. The longest duration of transportation of concrete should not exceed the shelf life of its properties, which is specified in the application.

The moment of delivery of concrete for the purpose of guaranteeing its quality is the beginning of unloading at the ABS construction site. In this case, the unloading time of the concrete mixer truck should not exceed 60 minutes.

4. Rules for acceptance of the mixture at the construction site.

The fact of acceptance of the quantity of the mixture is confirmed by the transport bill of lading, which is signed by the consumer upon completion of the incoming control operations (for example, the temperature of the mixture and determination of workability).

In accordance with clause 6.4. GOST, no more than 20 minutes of time are allocated for incoming control of the mixture.

A sample of the concrete mixture is directly taken from the ABS in the volume that is necessary for carrying out various types of tests. The act of sampling is drawn up in a bilateral act.

If the results of the incoming control are negative (for example, when it is not possible to raise the temperature of the mixture or restore the design workability), the concrete of this load is not subject to acceptance.

5. Procedure for restoring the design workability of the mixture.

The decision to restore design workability is made by the person responsible for the construction.

The restoration procedure is carried out together with the ABS forwarding driver and an employee of the construction organization who is responsible for construction control. The amount and type of plasticizer introduced into the mixture, the duration of mixing and the speed of rotation of the drum necessary to restore the design workability are provided for in the technological regulations of the mixture manufacturer.

Restoration of workability is formalized by a bilateral act and is carried out at the expense of the mixture manufacturer.

6. Form of document on the quality of concrete.

This document is provided by agreement of the parties:

The form of the quality document complies with GOST 7473-2010 (Appendix B)

7. Deadlines for filing claims:

8. Rules for checking whether concrete has achieved its design properties.

The manufacturer must inform the consumer of the results of monitoring the strength of concrete at intermediate and design ages, which are specified in the application, no later than 3 days after the tests.

The consumer can carry out a control check of the standardized quality indicators of concrete by testing control samples that are selected from the mixture during incoming inspection for compliance with the requirements of individual standards.

During such an inspection, the consumer has the right to demand that the manufacturer provide the opportunity to familiarize himself with the records in the as-built documentation that relate to the control of concrete of specific replacement batches.

The procedure for conducting and organizing inspections is established in the contract.

9. Warranties provided by the manufacturer.

The manufacturer provides guarantees that the design properties of concrete will be achieved only if the builders confirm that they have followed the correct concrete laying technology. The decision on warranty obligations is made after confirmation of the implementation of the concrete laying technology by a third party.

10. Procedure for resolving controversial issues.

An independent testing laboratory may be involved to resolve controversial issues regarding the design properties of concrete from a third party. It is advisable to also reflect this procedure, which provides the consumer with additional protection, in the concrete supply contract.

Sample concrete supply agreement

Date of introduction 01.01.91

This standard applies to concrete of all types in accordance with GOST 25192 and establishes methods for determining their strength in prefabricated and monolithic concrete and reinforced concrete structures and products (hereinafter referred to as structures), taking samples from structures, making control samples from these samples and determining the compressive strength of concrete , axial tension, splitting tension and bending tension (hereinafter referred to as strength) during destructive short-term static tests of samples.

The standard should be applied, as a rule, during inspection and expert testing of the strength of concrete in the structures of existing and reconstructed buildings and structures.

When in-process monitoring the strength of concrete structures, this standard should be used in conjunction with GOST 18105, which establishes the rules and standards for sampling, hardening and storage of samples, as well as rules for assessing the strength of concrete based on the test results of samples.

Determination of strength cellular concrete samples taken from structures should be carried out in accordance with GOST 10180.

1. ESSENCE OF METHODS

1.1. The strength of concrete is determined by measuring minimal effort, destroying concrete samples drilled or cut from structures when subjected to static loading with constant speed load growth, and subsequent calculation of stresses under these forces, assuming elastic operation of the material.

1.2. Samples

1.2.1. The shape and nominal dimensions of the samples, depending on the type of concrete testing, must comply with GOST 10180.

It is allowed to use cylinders with a diameter of 44 to 150 mm, a height of 0.8 to 2.0 diameters when determining compressive strength, from 0.4 to 2.0 diameters when determining tensile strength during splitting, and from 1.0 to 4. 0 diameters when determining axial tensile strength.

For all types of tests, a sample with working section dimensions (150 ´ 150) mm is taken as the base one.

1.2.2. The minimum size of the sample (diameter and height of the cylinder, edge of the cube, cross-sectional side of the prism) must exceed the maximum nominal size of the coarse aggregate used to make the concrete of the structure from which the test sample is taken, unless it exceeds 70 mm by at least:

2 times - for samples tested in compression

3 times - for samples tested in tension.

1.3. Samples are tested in batches.

The number of samples in each series must correspond to that given in table. 1.

1. Sampling of petroleum products (oil or fuel):

When submitting samples to the laboratory, the following is required:

Information about regulatory documentation: GOST, TU or ISO. or indication of the brand (for example, diesel fuel "L-0.2-40 GOST 305-82 or oil M16G2tss)

2. Foaming agent sampling:

When submitting samples to the laboratory, you must provide the following information.

Certificate of the Marine or River Register (if available).

Sampling location

Multiplicity of ship fire extinguishing system

Concentration of foaming agent used

The report on sampling the foam concentrate (download) with the seal and signatures of interested parties.

A sample of filling out a selection act can be seen in the Sample Acts section.

3. Sampling of oily water:

It should be taken into 4 (four) clean glass containers with a volume of at least 0.5 liters. and then attach a completed application label to each. (for bilge water download).

Specify the type of separator and its serial number

Indicate the type of alarm device and its serial number.

Rules for sampling concrete samples according to GOST 10181-2000

Samples of the concrete mixture for subsequent testing are taken during production concrete structures at the site of laying the concrete mixture and when shipping ready-mixed concrete at the site of its production. A sample of the concrete mixture is taken before concreting begins from the middle part of the batch. The concrete mixture is selected in the volume necessary to carry out at least two determinations of all controlled indicators (production of samples, determination of mobility, determination of delamination, etc.). The production of cube samples must begin no later than 10 minutes from the moment the concrete mixture is taken. The change in temperature of the concrete mixture during the production of samples should not change by more than 5 C.