Sep 03, 2019 Fence Post concrete mix. Discussion in 'In the Garden' started by Mattatooi, 14 Apr 2017. Page 2 of 2 Prev 1 2. r896neo. Joined 23 Feb 2007 Messages 4,767 of postcrete per hole to fix them in place then fill the rest with a wetmix of concrete. Best for timber posts is crushed rammed chalk. tomfe, 20 Apr 2017 18. DIYnot Local. Joined 3.Chat Online
Aug 11, 2014 If you are using post mix, read and follow the manufacturers instructions. The exact method of adding post mix can vary from adding the mix dry and then pouring in water, to pouring in the water first and then adding the mix. If you are making your own concrete mix, go for a 3 2 1 mix (3 aggregate, 2 sand and 1 cement). Tamp the concrete down.
Jul 01, 2015 A local builder is going to erect a front garden fence for me. It' s a fairly conventional affair, with slotted concrete posts, concrete gravel boards and wooden fence panels. Asking him how he was going to concrete the posts in, he said he was going to use a 'dry mix.
Apr 17, 2017 With a standard wet concrete, you have to support the posts over night whilst the mix goes off, but if you mix the agregate, and cement without any water, but with a slightly damp sand, then the post will hold straight, and the mix will go off on it's own (at least from what I've gathered).
Apr 09, 2018 Having done fencing for then 30 years, I will tell you the only way to do it , all in ballast mix at 6.1, NO water at all, the moisture from the ballast is enough. As you say 2' deep hole, but only about 2 3 wider then the post on all side, put a couple of inches of the concrete in the bottom of the hole, post in then start filling with the concrete every 6 compact the concrete down.
Setting Posts in Concrete. 1. Dig the post hole, making it three times the width of the post and at a depth equal to 1 3 to 1⁄2 of the above ground length of the post, plus 6 (right). For loose or sandy soil, using a tube form is recommended (left). 2. Pour 6 of gravel or crushed stone into the bottom of the hole. Compact and level the gravel using a post or 2 x 4.
If you use crushed stone, don't use anything larger than 1 2 , and don't use washed crushed stone. The dust and particles from the crushing operation will help bind the backfill together.
The partial replacement of quarry dust gave a 28 days’ peak compressive strength at 40 replacement level and decreases for 50 replacement. Figure 3 shows the compressive strength relation for both normal concrete and quarry dust concrete, at the age of 28 days for M30, M25, and M20 grades of concrete for different w c ratios of 0.45 and 0.5.
May 13, 2008 The reason people use concrete to cement fence posts in the ground is to give is rigidity. This increases the surface area underneath the ground, making it less likely to shift and move. You can do this in the rain. The concrete you are adding has no structural value so the water to product ratio does not matter.
1. Dig the post hole, making it three times the width of the post and at a depth equal to 1 3 to 1⁄2 of the above ground length of the post, plus 6 (right). For loose or sandy soil, using a tube form is recommended (left).
Apr 24, 2007 Accurate concrete mixing ratios can be achieved by measuring the dry materials using buckets or some other kind of measuring device. By measuring the mixing ratios you will have a consistent concrete mix throughout your entire project. To produce a 3000 psi cubic yard of concrete (27 cubic feet) the concrete mixture ratio is 1. 517 pounds of.
I always use exterior clear sealant where concrete meets post at base. This keeps water from getting between concrete and post. I also brush on a waterproofer on entire post that is above the concrete. I then spray the post a rubberized undercoater to about 4 or 5 inches above the base. Very effective in case any water or dirt contacts the post.
Jun 15, 2010 Posts that are installed with concrete around the post will rot if the concrete is higher than the surrounding dirt because water will collect on the concrete and run between the concrete and the post. Good luck with your project. It sounds like you are going to build a fence.
With concrete being one of the most useful building materials, there are countless applications for its use on farm. The most common uses of concrete are for shed floors and footings, bunkers, post footings and stockyards. While the process of laying concrete can be expensive, there are several options for those wishing to carry out the work themselves and save money.
For post set, extra strength or concrete mix concrete water In a non porous vessel, such as a wheelbarrow, add the Concrete Mix no than 2 bags at a time. Add exactly the amount of clean water instructed on the back of the packaging per bag of Concrete Mix and mix thoroughly remembering that excess water ruins good concrete.
Sep 01, 2018 This type of mortar mix is perfect for use in an internal block partition wall. Strong Mortar 1 4 mix. Used for exposed brickwork. Mix one part cement to 4 parts soft sand. Again, add a small amount of lime or plasticizer to increase the workability. Mixing Concrete and Mortar. It is always best to mix concrete or mortar on a piece of board.
9. Determine the concrete mix proportions for the first trial mix. 10. Prepare the concrete using the calculated proportions and cast three cubes of 150 mm size and test them wet after 28 days moist curing and check for the strength. 11. Prepare trial mixes with suitable adjustments till the final mix.
Oct 14, 2019 Two 50 pound bags of fast setting concrete will set a 4 inch by 4 inch (or a 4 inch diameter) post in a 10 inch diameter hole 2 feet deep. Step 3 Pour water into the dry mix and allow it to soak in. Use enough water to saturate the dry mix.
You should not put dry concrete mix into a hole. The wetness is really not the big thing it is the fact that you may not mix it properly meaning you will have pockets of dust as things settle. These small pockets of unmixed mix will make the concrete extremely weak and will crack or crumble apart a buddy had this issue one time haha.
Stone dust, sometimes called rock dust, is a byproduct of crusher run that’s provided the bedding layer for many a paver project over the years. While it can work in some construction applications, there’s a growing recognition that sand – washed concrete sand in particular – has proven far stable and exhibits properties that make.
Jun 12, 2010 Hi, Would like to know if there any problems using crusher dust for my concrete instead of sand and gravel, the crusher dust has a fair bit of powder so it mixes ok but i'm want to use it for footings for raised floor of ganny flat, was going to use mix of 4 1 have used it for chooks pens etc and seems alright but don't know how strong it is to use for house footings. thanks Rick.
Use a level to position the post perfectly vertical. Step 5 Fill the hole with Fast Setting Concrete up to 3 to 4 inches below ground level. Step 6 Pour about a gallon of water per 50 lb bag into the hole and allow the water to saturate the concrete mix. NOTE mix will set hard in 20 to 40 minutes. Step 7.
Sep 27, 2014 I wouldn't say I'm too worried about it, but I do have an 8ft tall section of fence that I want to make sure stands up, and there is about a +40 cost increase using the post specific type concrete mix. It's about 400ft of fence in total so the cost + the extra labor to premix the concrete.
Depending on the application concrete mix design can be complex. The below table gives a basic indication of the mix ratios used for different purposes but should be used as a guide only. Some additional things to consider when finding a suitable mix design include but.
Crusher run is just about the most sturdy and reliable material that you can use for a loose fill driveway. The crushed stone and the dust will naturally adhere to one another, forming a strong bond that will prevent pieces from shifting and scattering.
Dec 22, 2008 Dig deep in clay soils and use a masons line when erecting long fencelines. In a repair, sometimes you can chisel the rough cut post out of the concrete and use a new pressure treated post. It's an option, but measure first. A solid fence makes for good neighbors, on the western coast, Call before you dig, if its a new fence Thats about all I.
Jan 30, 2015 Interesting in a simple matter of concrete mix ratios there is such discrepancies. Because you have written 1 3 3 I looked it up only to find a smorgasbord of mix ratios all different not by much but different. The only consensus seems to be in the 3 2 1 ratio for the rest it's all over the place.
Figure 5 shows the deflection in the center of the concrete beam as M1 to M8 mixing ratio by using the ACI method of mix design with the lightweight concrete and replacement of the quarry dust. The load is applied at the 1 3rd of the span like 10 KN, 20 KN up to 100 KN and the deflection is calculated by the measuring instruments.
Concrete mix ratio of 1 3 3 – On mixing 1 part cement, 3 parts sand with 3 parts aggregate produces concrete with a compressive strength of 3000 psi. On mixing water with the three ingredients, a paste is formed that binds them together till the concrete mix gets hardened. The strength concrete is inversely proportional to the water cement ratio.
Sakrete Fast Setting Concrete Mix is a preblended mixture of special cementitious materials, sand and coarse aggregate that quickly sets within 30 minutes. It is ideal for projects that necessitate a rapid set for same day use. Fast Setting Concrete Mix also allows you to set posts and poles with no mixing or bracing required.
Fast Setting Concrete Mix When you need to support a fence or mailbox post, or create a small concrete slab, fast setting concrete makes a great choice. This sets in just 20 to 40 minutes. High Strength Concrete Mix When durability is key, high strength concrete makes a great choice. This is ideal for foundations, footers and heavy equipment.