BS Part BS Part BS EN to 3 & 5 to 7: BS EN BS EN to BS EN Specifies two procedures for sampling fresh concrete: composite and spot sampling. Document History. Supersedes BS EN Related products by. said in BS EN , take a few samples throughout the pour for the best representation of the batch and make sure you take % of what you think you’ll .
|Published (Last):||1 May 2007|
|PDF File Size:||9.79 Mb|
|ePub File Size:||14.46 Mb|
|Price:||Free* [*Free Regsitration Required]|
Please download Chrome or Firefox or view our browser tips.
It may be used to verify conformance to a specified requirement for the temperature of concrete. Hs of fresh concrete at site. Record bs en 12350-1 temperature to the nearest 0.
Records shall be kept to ensure the traceability of the specimen from sampling to testing. In some big projects, imagine the time consumed to perform the composite sampling when there is a lot of concrete truck mixers in queue at the checkpoint area.
Report from the sample bs en 12350-1 Leave the TMD in the concrete a minimum of 2 min. Compacting by hand with compacting bs en 12350-1 or bar Distribute the strokes in a uniform manner over the cross-section of the mould.
Pack the hardened test specimens in wet sand or wet sawdust or wet cloths wet burlapor sealed in plastic bags bs en 12350-1 water. By continuing to use this website, you agree to their use.
Plastic concrete slump bs en 12350-1 than 10 mm and less than mm. Where bs en 12350-1, the specification of a maximum time between placing layers of concrete should take account of the likely temperature of the concrete, cement type, mix proportions, the use of admixtures with set retarding properties and consistency of the concrete. The first 12350-11 of thought is rather straightforward: Leave a Reply Cancel reply Enter your comment here See more standards on testing concrete.
This test is considered applicable to: Frequency shall be at least vibrations per minute The diameter of the internal vibrator not bs en 12350-1 one-quarter of the smallest dimension of the test specimen Vibrating table with a minimum frequency of 40 Hz 2 cycles per minute Compacting rod or bar Preparation and filling of the moulds Before filling the mould, cover the inner surface bx the mould with a thin film non-reactive release material to prevent the concrete from bs en 12350-1 to the mould.
You are commenting using your Facebook account. Ways of how the sample shall be vibrated: Search all products by. What bs en 12350-1 the time limit before placing of fresh concrete?
Notify me of new comments via email. Move the scoop around the perimeter of the mold to ensure even distribution of material and bs en 12350-1 segregation.
Extended delays in placing can lead to a significant loss of consistency with time making it bs en 12350-1 to rn with satisfactory compaction.
Usually, especially for big projects where a large quantity of concrete is cast, both parties come up with the designed mix and validated through trial mixes to compensates for this particular problem. Avoid over-vibration, which may cause loss of entrained air. The place else may anybody get that type of info in such a perfect means of writing? Concrete cubes at the site Marking The test specimens shall 1250-1 marked clearly and indelibly, without damaging the specimen using a cub tag that contains the information related to the specimen Casting date, ticket number, specimen ID, location of 1235-1.
bs en 12350-1
BS EN 12350-1:2009
Mechanical vibration with vibrating table Apply the vibration for the minimum duration 12530-1 to achieve full compaction of the concrete. Procedure for Slump Test.
Worldwide Standards We can source any standard from anywhere in the world. Mechanical vibration using Compacting with an internal vibrator Apply the vibration for the minimum duration necessary to achieve bs en 12350-1 compaction of the concrete.
Sampling of Freshly Mixed Concrete at the Field (BS EN ) – QA/QC Construction
Transport of test specimens Avoid bs en 12350-1 of moisture and deviations from the required bs en 12350-1 at all stages of transport. Sampling BS EN specifies two procedures for sampling fresh concrete, by composite sampling and by spot bs en 12350-1. I have a presentation subsequent week, and I am on the look for such info.
Apparatus Mold Mold use for slump test of fresh concrete Dimension in mm Metallic, Frustum of a cone Alternative materials are allowed if requirements are met comparability tests Tamping Rod Round, straight steel rod, length mm and diameter 16mm Tamping end rounded to a hemispherical tip Measuring Device Ruler Marked in increments of 5 bs en 12350-1 or smaller Length of at least mm In addition, a scoop is needed.
When mixing and sampling of concrete is done in a laboratory, different procedures may be required. You may experience issues viewing this site in Internet Explorer 9, 10 or While the spot sampling takes scoopfuls from the initial discharge of the concrete from the truck mixer.
Customers who bought this product also bought BS EN Take the scoopfuls of concrete through the moving stream from the truck mixer.
Email required Address never bs en 12350-1 public. Half of the strokes near perimeter, and then ba with vertical strokes spirally toward the center. Bs en 12350-1 Concrete It is acceptable to measure the temperature in: The vertical distance between the height of the mould and the highest point is measured and recorded as the slump in mm.
Rod the second and top layers throughout their depth, so that the strokes just penetrate into the immediately underlying layer. Strike off the ne with the tamping rod in a screeding and rolling motion Remove concrete from the area surrounding the base to prevent interference with the movement of slumping 12350.
Bs en 12350-1 placing subsequent layers of fresh concrete should be undertaken as soon as practical to enable a fully compacted and monolithic element. Fill in your details below or click an icon to log in: Click to learn bs en 12350-1. Create a website or blog at WordPress. Find Similar Items This product falls into the following categories. The requirement for remixing the sample before tests on the fresh concrete, 1235-1 before making test specimens, is included in the relevant standards.