Can you Pump Concrete 3 4 agregate w 5 slump Related Information

Frequently Asked Shotcrete Questions | Curtis Concrete Pumping

A 2″ to 3″ slump is typical for a shotcrete mix, compared to a 4″-5″ slump for a cast in place mix. Aggregate Size. The large aggregate size used for shotcrete is typically 1/2″ and smaller. Form-and-pour concrete's large aggregate is regularly 1″ to 1.5″. The size difference is due to the diameter of the concrete pumping

Guide To Concrete Workability | Concrete Slump | Concrete2you

Workability is largely determined by how fluid the concrete is. This is referred to as "Slump". Essentially, the more fluid the concrete, the higher the slump. Although slump is often seen as an indication of water content, it is more legitimately interpreted as a measure of consistence. Following the adoption of the new European Standard for

Concrete Slump Test Procedure, Applications & Types of Slump

Feb 16, 2017 · Table : Workability, Slump and Compacting Factor of concrete with 19 or 38 mm (3/4 or 1 1 / 2 in) maximum size of aggregate. Slump Test Standards. The concrete slump test is referred to in several testing and building code, with minor differences in the details of performing the test.

ACI mix design - Memphis

Maximum aggregate size (in.) Slump(in) 0.375 0.5 0.75 1 1.5 2 3 6 1 to 2 350 335 315 300 275 260 220 190 3 to 4 385 365 340 325 300 285 245 210 6 to 7 410 385 360 340 315 300 270 - Air Content 3.0% 2.5% 2.0% 1.5% 1.0% 0.5% 0.3% 0.2% Non-Air-Entrained Concrete Mix Design Procedures ACI Mix Design Maximum aggregate size (in.) Slump(in) 0.375 0.5

Concrete Basics - HomeAdvisor

When you pump concrete, the stone shouldn't be too big - 3/4-inch gravel is a typical maximum for pumped concrete. But if you're taking your mix straight off the chute, gravel as large as 1-1/2 inches should give you no trouble, and large aggregate is actually a good thing to have. For one thing, it helps reduce shrinkage.

Concrete Mix Ratio And Slump Value Of Concrete

Typically, a mix is about 10 to 15 % cement, 60 to 75 % aggregate and 15 to 20 % water. This concrete mix ratio of aggregate to sand to cement is an important factor in determining the compressive strength of the concrete mixture. Type of Concrete Mix Ratio. As Per IS Code 456-2000 three different part of Concrete Mix Ratio. The concrete slump

Pumped Concrete-Pump Types, Working, Technique and

Jun 30, 2018 · The maximum size of aggregate used in the concrete for direct acting pump should less than 1/3 rd of the diameter of the pipe to avoid clogging. The motion of concrete always in the form of impulse. However, the output of the pipe should maintain a constant flow. 2.Squeeze concrete pumps. The second type of pump is squeezed concrete pumps.

If you have good concrete You can pump it

the usual stru c t u r al range of 2- to 4-inch slump and will easily handle good mixes from 2- to 6- or even 7-inch s l u m p . Se g regation can occur in slumps over 7 inches. For slope paving and other low-slump re q u i re m e n t s, pumps have delive r ed concrete with slumps as low as 1 inch at va r ious rates of delive r y. But be

What Is Concrete Slump? | Hunker

Jan 28, 2020 · Ruttura says the ideal is to "have at least 270 pounds of water per cubic yard, although we can pump it with down to about 230 pounds with a well-blended aggregate.". Putzmeister A wide array of factors can impact concrete pumpability such as the dimension, shape, gradation, and volume of aggregates and fibers.

What is Concrete Slump: Everything You Need To Know

Feb 13, 2018 · To understand, why you need to check the quality of concrete, you must first understand what concrete is. Concrete is a composite material consisting of coarse aggregate which is stick together with fluid cement. Most of the times, the concrete used is lime-based and is termed as the Portland cement concrete.

Major Problems in Concrete Pumping Works: How to Avoid

Major Problems in Concrete Pumping Works 1. Blockage of Concrete Pump. Blockage can occur due to numerous bends in the pipeline, too sharp or too wide turns, gap-graded aggregate, and failure to clean and maintain the pipeline after each concreting work.

Actual Concrete Mix Ratios For 3000, 3500, 4000, and 4500

These are the actual concrete mix ratios for 3000, 3500, 4000, and 4500 psi concrete that I use to pour concrete floors, patios, pool decks and more. I'll show you the actual concrete batch plant ticket with the cement, sand, and aggregate break downs for the yards we used.

Making Concrete Pumpable| Concrete Construction Magazine

Best Mix for Pumped Concrete | JLC Online

Workability of Concrete by Slump Cone Test

4. procedure. If this test is being carried out in the field, the sample mixed concrete shall be obtained. In the case of concrete containing aggregate of maximum size more than 38 mm, the concrete shall be wet-sieved through one and half inch screen to exclude aggregate particles bigger than 38 mm.

Pump Mix for Concrete Wall Construction - Structural

Feb 12, 2011 · While a 4-inch diameter pump will work fine with a well proportioned 1-inch MSA mix, chances of it working with a 1-1/2 MSA mix are slimmer. A 6-inch diameter line should work fine with a 1-1/2inch mix. RE: Pump Mix for Concrete Wall Construction. rscassar (Structural) 10 Feb 11 06:38.

Can you Pump Concrete (3/4 agregate w/ 5" slump)

Feb 22, 2007 · Is it possible to pump (either w/ boom truck or tow behind unit) Concrete Mix w/ 3/4 inch agregate / 4,000 PSI mix/ 2 to 1 portland cement to water ratio/ w/ a 5 inch slump. I have spoken with my decorative concrete supplier and he says I would have to use (an 'uphill mix" with 3/8 pea gravel.

Mix Design for Pumped Concrete with PPC, OPC, OPC+Flyash

The workability of pumped concrete in general has an average slump of between 50 mm and 100 mm. A concrete of less than 50 mm slump is impractical for pumping, and slump above 125 mm should be avoided. In mixtures with high slump, the aggregate will segregate from the mortar and paste and may cause blocking in the pump lines.

Aggregate in Concrete - Concrete Network

The maximum size of coarse aggregate that can be used in a mix depends on the size, shape, and reinforcing of a member, based on these "not-to-exceed" guidelines (see Photos 5 and 6): 3/4 of the clear spacing between rebar or between rebar and forms (cover distance) 1/3 the depth of the slab. 1/5 the narrowest dimension of a member

Air entrainment and concrete - USDA

2 inches (51 millimetres) 4 ± 1.5 percent air 3 inches (76 millimetres) 3 ± 1.5 percent air a Normal weight aggregate concretes only. For lightweight aggregate concretes specify 7.5 ± 1.5 percent air for resistance to freezing and thawing; for workability, specify 5.5 ± 1.5 percent for lightweight ag-gregate concretes in the 3000- to 4500

What is the slump value for pouring the mass concrete with

Mar 01, 2010 · The ideal concrete mix for pumping typically contains air-entraining agents, a little extra sand (compared with a standard concrete mix), often some fly ash, and a well-graded aggregate blend. To make the concrete easier to pump and place as it comes out of the hose, many batch plants also add water-reducing admixtures — known as