Pumping concrete using concrete line pumps or concrete boom pumps is usually the best way to pour large concrete placements. If you''ve never used a concrete pump, you can learn all about them here. Hi, I am Mike Day, owner of Day’s Concrete Floors, Inc. in Maine, where I''ve been working with concrete for 40 years now, and this website is where I can share with you all the knowledge and
Making and Using a Water Level The Most Accurate Level There Is Posted by: Dale Williams on 6/24/99 in Reply to a question about a retail water level Rather than buy a water level why not just take 20'' of 3/8" ID (Inside Diameter) clear tubing, and attach it to a
Concrete Prices The average cost of concrete is $119 to $147 per cubic yard, which includes delivery up to 20 miles.Pouring plain concrete costs $5 to $10 per square foot depending on the quality, while colored, stamped, or stained concrete costs $8 to $18 per square foot to install.
After we''d placed several columns this way, the engineer said we had to use a tremie hose because concrete shouldn''t free fall more than 3 to 5 feet. ACI 301 is the specifiion for this job and I can''t find any mention in the specifiion of a height limit for concrete free fall.
If you are using a ladder to reach high parts of the siding, have someone hold the ladder for you. Use extreme caution when working on a ladder. Wear rubber-soled shoes with good gripping to prevent slipping. Never mix cleaning products -- especially vinegar and
A rule of thu is to pump 25 litres of mortar for each 15 meter length of 100 mm diameter hose, using smaller amounts for smaller sizes of hose or pipe. Dump concrete into the pump-loading chaer, pump at slow speed until concrete comes out at the end of the discharge hose…
Adding colorant to the concrete mix is the easiest method and produces consistent results: 1 For every two 60-lb. or 80-lb. bags of dry concrete mix, first blend one 10 ounce bottle of QUIKRETE® liquid cement color with 5 quarts of clean water. Mix the liquid
ACI method of concrete mix design is based on the estimated weight of the concrete per unit volume. This method takes into consideration the requirements for consistency, workability, strength and durability. This article presents ACI method of concrete mix design.
2018/2/26· Concrete Pad The pad we’re doing is 8-feet by 9-feet and 3 1/2 inches thick. First, we convert all our units to be the same, and we need cubic feet as a result. 3.5 inches ÷ 12 inches per foot = 0.292 feet, therefore, our pad is 8 feet x 9 feet x 0.292 feet. Length x
Contractors can polish concrete using wet or dry methods, but typically they use a coination of both. Wet polishing uses water to cool the diamond abrasives and eliminate grinding dust. Because the water reduces friction and acts as a lubricant, it increases the life of the polishing abrasives, particularly the resin-bonded disks, which can melt at high temperatures.
How to Build a Polished Concrete Desk: This Instructable documents the construction of my new Modern desk with a polished concrete desktop! Now is the time to add both the wire mesh support (I used K-lath) and any decorative crushed glass or eedded
HOW-TO VIDEOS Building and Repair Projects A great way to view and understand your building or repair project before you get started. Find out just about everything you need to know by clicking one of the videos below. The addition of
While you may still need to turn to site cast concrete on occasion, as you move forward, precast concrete provides superior versatility, functionality, affordability and labor efficiency. If you aren’t already using precast for your projects, it’s time to make the switch.
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2020/5/13· Using the directions on the bag of concrete, mix the concrete in a large bucket or wheelbarrow. Most 80 pound (36 kg) bags of concrete require three quarts (2.8 liters) of water. Pour the concrete into the desired concrete mold and allow it to partially dry before beginning the carving. 
In an attempt to escape from the concrete, efflorescence will take the path of least resistance. The concrete''s surface profile, color, water-cement ratio, and porosity all play a big part in the process. The sample on the left side of the picture has a rough, open
Here''s a video that shows you how to do the ASTM C31 - Making and Curing Concrete Test Specimens in the Field. When strength is used as a basis for acceptance of concrete, specimens must be molded and cured according to ASTM C31. Cylinder molds can
ty factor of 3.5. Doubling the safety factor is ve r y simple. Just use the load chart of the crane and cut the lift capacity in half. Using the stan-d a r d safety factor of 3.5 times the intended load for load lines and d ow n g r ading the crane capacity to half itsf o r
Shotcrete, gunite (/ ˈ ɡ ʌ n aɪ t /), or sprayed concrete is concrete or mortar conveyed through a hose and pneumatically projected at high velocity onto a surface, as a construction technique, first used in 1914.: 7 It is typically reinforced by conventional steel rods, steel mesh, or fibers.
Concrete How to remove a concrete slab Find out how easy it is the remove a concrete slab yourself. Planning & Projects How to create a low-water garden ‘Dry’ or ‘low-water’ gardening is a real art and, when done right, will provide you with an inviting landscape that uses very little water.
This is the question I am asked a lot and my method is as simple as using a garden hose to wet the surface at least twice a day and if it is very hot I like to cover the concrete after wetting it using plastic or something to keep the surface from drying too quickly.
If using a stud-type anchor, type anchor, or the concrete screw- the fixture, or item being fastened, can be removed at any time with little or no damage to the concrete block. However, hammer-type anchors are permanent installations.
Concrete pouring is a crucial process which not only needs properly qualified persons but also considerable focus and concentrations. Almost all codes have established certain specifiions to ensure proper concrete pouring and prevent its segregation. In this article, correct concrete pouring according to ACI 304R-00 is presented. Fig.1: Concrete Pour Placement Contents:Precautions during
QUIKRETE Concrete Mix is used for general construction and repair of concrete where a thickness over 2 inches (5 cm) is required. It can be used for such projects as driveways, sidewalks, patios, steps, footings, setting of posts.
2019/8/12· Pouring concrete over existing concrete sidewalk or patio surfaces is an option if the existing base is structurally sound. You need to start with a clean surface and ensure a proper bond to create a new concrete surface that lasts.
Concrete is a durable building material that takes special materials to dissolve once it''s hardened into place. Phosphoric acid and trisodium phosphate are the main compounds used to dissolve concrete leftover from masonry work. Sometimes, that doesn''t do the
2007/4/22· If you can do this in one pour (that is in 30 minutes or so), call for a redi-mix truck. Find a company that has a truck that can mix on-site. These trucks have hoppers for the dry cement, stone, and a water tank. They mix the concrete right at the top of the shoot.