For 2 standard fence post holes, you will need about 2 to 4 bags of 50 lb to 80 lb concrete mix in total (typically 1 to 2 bags per hole). The exact amount depends on your hole size:
Most 4x4 fence posts require 1-2 bags of 50lb concrete mix. The exact amount depends on hole diameter and depth, with typical residential installations using 8-10 inch diameter holes and 24-30 inch depths requiring approximately 1.5 bags per post.
The 4-2-1 rule is one of the most common mix ratios for making durable concrete. It means four parts gravel, two parts sand, and one part cement. This balance ensures strength, workability, and proper binding between the materials. Too much of one ingredient can weaken the final product, so following the ratio is key.
Coca-Cola contains high levels of sugar, which acts as a powerful retarder. When applied to freshly poured concrete, it prevents the top layer of cement from hardening. This allows contractors to wash away the unhardened surface paste, creating a textured "exposed aggregate" finish without damaging the underlying structure.
Mixing your own concrete using base ingredients (Portland cement, sand, and gravel) is significantly cheaper than buying pre-mixed bags. However, the time, physical labor, and equipment needed for large projects often make bulk ready-mix trucks more economical.
Water is the most common enemy of concrete surfaces. When water penetrates the surface of concrete, it can cause it to crack and weaken. This is especially true in colder climates where water can freeze and expand, creating even more damage.
The ASTM C 94, Specification for Ready Mixed Concrete, indicates that the concrete shall be discharged on the job site within 90 minutes and before 300 revolutions after water was added to the cement.
Wondering if you can skip the underslab vapor barrier plastic on your next concrete project? The short answer is no. ASTM compliance standards require vapor barrier plastic beneath concrete slabs — and for good reason. Vapor barriers protect not only the building itself but the people inside it.
Interior Concrete Floors:
Use a mild detergent as needed. Such as Dove or Ivory dish soap. Do Not use Dawn, Simple Green, Ammonia or harsh cleaners as they will work to damage and even strip the wax.
In concrete sugar slows down how quickly the cement reacts with water. This can lead to several effects: Extended Workability: Sugar delays the setting time, making it easier for workers to handle and finish the concrete.
To recap, the most common mistakes in concrete construction include adding too much water, neglecting site preparation, improper reinforcement placement, inadequate finishing, insufficient curing, and overlooking environmental conditions. These issues weaken the mix and compromise long-term performance.
If you know the construction of current concrete and it has 10 mil vapor barrier than non treated is fine. If not than use treated lumber for anything touching concrete if you do not know treatment beneath. I put plastic between the 2x4 and cement floor when I put my walls up. Just nail pt 2x4 on walls with cut nails.
Mixing concrete without following the 4 2 1 rule can lead to serious problems: Too much cement → Brittle and crack-prone concrete. Too much sand → Weak, crumbly concrete that erodes easily. Too much aggregate → Poor bonding, resulting in weak and porous concrete.
Determine concrete volume required: Multiply ½ hole diameter (in feet) squared, x 3.14 x concrete collar depth (in feet) times hole number, divided by 27.
U posts are generally heavier duty and used in fence for larger animals such as horses and cattle. T posts are easier to drive in and reuse. They are commonly used to protect poultry or gardens.
How Long Should Concrete Cure? (Timeline Breakdown) Quick Answer: Concrete sets in 24–48 hours, reaches ~70% strength in 7 days, and achieves full strength at 28 days. Concrete gains strength in stages. While it may look dry within a day or two, curing continues internally for weeks.
Stained concrete cleaner: Use a cleaner specifically formulated for stained concrete. These cleaners are designed to remove dirt and grime without stripping the stain or damaging the sealant. Avoid harsh chemicals: Do not use acidic or alkaline cleaners, bleach, or ammonia, as these can damage the stain and sealant.
WD-40. WD-40 can do more than eliminate unpleasant door squeaks – it may also help remove oil stains in your driveway, according to Reader's Digest. That's because it has ingredients that can penetrate grease.
Instead of a pressure washer, you can effectively clean concrete using a scrub brush and a cleaning solution, such as a mixture of bleach and water, dish soap, or vinegar. For specific stains, specialized products like waterless concrete cleaners, baking soda, or rust removers are highly effective.
Plastic is used to reduce friction which reduces the stress of the concrete as it shrinks (cures). It has been proven that a better plastic like Stego vs 5mil provides better friction loss and we even go (2) layers of Stego for this reason.
Pouring concrete directly on dirt is not recommended. Soil shifts, settles, and expands with weather changes. Without a proper base, the concrete is highly likely to crack, buckle, or sink over time.
Between 4-8 hours: After about 6 hours, the concrete begins to harden, so potential damage from rainwater won't be as significant. The surface is still vulnerable, but it's stronger than in the first hour. After 12 hours: If rain hits concrete 12 hours after placement, the chance of damage is very small.
The concrete curing time takes about 28 days to be fully cured. Differences in weather, mix, and other items can slightly change the timeframe of the curing period. The general rule of thumb for concrete drying is 28 days to dry for every 1 inch of slab thickness.
Short Load Concrete
A short-load concrete delivery is best for small residential and commercial projects that require small quantities of concrete. At Arnold Ready Mix, we can deliver 1-11 yards of concrete to your job site in a single trip.