#### 1. Mix design of light weight concrete 2. Estimation of ...

loose basis, may be used for each cubic meter of concrete ØCoarse aggregate volume = 0.7 ∗1 ³ = 0.7 m³ ØCoarse aggregate dry weight = 0.7 ³∗516 / I³ =361.2 kg

#### Correct Ratios for Concrete Mixes - Sans10400.co.za

25 Mpa This is a medium strength concrete and is suitable for reinforced foundations, light-duty house floors, patio slabs, footpaths, steps, driveways and garage floors. To make 1 cubic metre of 25 Mpa concrete you will need to mix 7 bags of cement with 0,70 cubic metres of …

#### Table of concrete design properties (fcd, fctm, Ecm, fctd ...

A normal weight concrete weighs 2400 kg per cubic meter or 145 lbs per cubic foot (3915 lbs per cubic yard). The unit weight of concrete (density) varies depending on the amount and density of the aggregate, the amount of entrained air (and entrapped air), and the water and cement content.

#### HY-TEC Concrete and Calculator

Normal Class concrete. Products ranging from 20 to 50 MPa compressive strength at 28 days with a design slump that has a point of acceptance from 20 to 120 mm are available in both 10 mm, 14 mm and 20 mm aggregate sizes. 20 MPa and 25 MPa. Commonly used for house slabs, driveways, footings and footpaths. Residential slabs and footings

#### Concrete - Properties

Related Topics . Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more ; Related Documents . ACI - American Concrete Institute - American Concrete Institute; Bricks - Quantity and Mortar Consumption - Estimating required quantity of bricks and mortar ; Building Foundations - Loads - Typical loads on building foundations

#### iBM Ready-Mix Concrete Company Uganda Premix Concrete ...

Concrete: Low density 1200-1500kg/m3 or 1600-1800kg.m3 concrete with a compressive strength of 3 to 5MPa: Low density concrete allowing easy removal if necessary: Trench, tank reinstatements, non structural insulations: Light Concrete: Light weight 25MPa concrete, perlite or polystyrene beads used to achieve a density below 1100kg/m3

#### Concrete Batching Plant |25 mpa concrete mix calculator ...

CONCRETE MIX WITH AIR 25 MPa, 30 MPa, 35 MPa or 40 MPa DESCRIPTION: CONCRETE MIX WITH AIR is a pre-blended mix of fine and coarse aggregate and Type 10 Portland cement packaged in 30 kg sacks and in one cubic yard (.76 m3) bulk bags. It is available in compressive strengths of 25 MPa, 30 MPa, 35 MPa, and 40 MPa.

#### how much weight a specific sized concrete slab can carry ...

A standard residential driveway is commonly 4-6 inches thick concrete with re-enforced steel bars. A residential garage normally is constructed on a 4 inch mono-lithic re-barred slab. These are just generalizations and you should consider all extenuating factors for your project for your region.

#### How to Calculate the Load Bearing of Concrete | Hunker

Jul 12, 2017· This note reflects the specific mix you will order throughout your project. Write this number down. This is the base load-bearing strength of your concrete. If you are doing a smaller home project with no special accelerants added to your mix, your load-bearing strength per concrete yard will be 3,000 psi. This is the standard psi of a common mix.

#### What size concrete slab can hold 90,000 lbs? - Quora

May 31, 2019· It sounds like you are asking what thickness and PSI strength is needed to hold a fully loaded Semi-truck and Trailer. If that's the case, it takes some math, and the numbers will be slightly fudged as the weight is not perfectly distributed to ea...

#### Block Weight & Cube Size - Standards - Brown's Concrete ...

STANDARD & LIGHTWEIGHT CONCRETE BLOCK / ARCHITECTURAL BLOCK CUBE SIZES & WEIGHTS STANDARD 10cm 15cm 20cm 25cm 30cm CONCRETE BLOCK Pieces Wt ( lbs ) Pieces Wt ( lbs ) Pieces Wt ( lbs ) Pieces Wt ( lbs ) Pieces Wt ( lbs ) per Cube Pce Cube per Cube Pce Cube per Cube Pce Cube per Cube Pce Cube per Cube Pce Cube STANDARD 120 27 3240 100 32 3200 75 …

#### Which is stronger, concrete grade 25 or 30, and why? - Quora

Feb 09, 2018· if you ask this question out of no where to experience engineers, you would be laughed at.. seriously.. it is common to know that g25

#### Concrete Mixes by Weight and Volume - Sans10400.co.za

I am throwing a slab with a required strength of 25 MPA. The area is 16m² at a required thickness of 75mm, which calculates to 1.2 m³ of concrete. The above tables only gives me the ratio mix for 1m³, and I am required to have slightly more.

#### EXAMPLE BELOW - BGC Cement

Commonly adopted mixture for reinforced concrete beams, floor slabs, driveways and paths. 1 2.5 4 0.66 32 MPa 16 (=320kg/m3) 0.5 1 Footings for domestic buildings and walls. 1 2.5 5 0.75 25 MPa 14 (=280kg/m3) 0.5 1 Toppings for two-course concrete paths. 1 1 2 0.66 50 MPa 28 (=560kg/m3) 0.5 1

#### Concrete weight calculator | volume vs. weight of concrete

Weight of the concrete per volume of concrete. Automatic calculator for the specific unit weight of a volume of concrete in pcf, lb/ft^3, lb/yd^3, kg/m3, fresh wet concrete mix and dry cured hardened concrete. Weighing concrete in tonnes per cubic meter or kilograms kg, lb pounds per cubic foot or yd yards. Online convert and calculate how heavy is any volume of normal concrete 150 lbs/ft^3 ...

#### Modulus of elasticity of concrete? [3 Different standards]

Mar 04, 2019· Ec = Modulus of elasticity of concrete. f'c = Compressive strength of concrete. According to. ACI 318–08, (Normal weight concrete) the modulus of elasticity of concrete is, Ec =4700 √f'c Mpa and; IS:456 the modulus of elasticity of concrete is 5000√f'c, MPa. The main factors which may affect the values determination of modulus of ...

#### Curing of Cement Concrete - Time and Duration

Curing of cement concrete is defined as the process of maintaining the moisture and temperature conditions of concrete for hydration reaction to normally so that concrete develops hardened properties over time. The main components which need to be taken care …

#### Types of concrete - Wikipedia

The parts are in terms of weight – not volume. For example, 1-cubic-foot (0.028 m 3) of concrete would be made using 22 lb (10.0 kg) cement, 10 lb (4.5 kg) water, 41 lb (19 kg) dry sand, 70 lb (32 kg) dry stone (1/2" to 3/4" stone). This would make 1-cubic-foot (0.028 m 3) of concrete and would weigh about 143 lb (65 kg). The sand should be ...

#### CONCRETE MIX WITH AIR 25 MPa, 30 MPa, 35 MPa or 40 MPa

CONCRETE MIX WITH AIR 25 MPa, 30 MPa, 35 MPa or 40 MPa DESCRIPTION: CONCRETE MIX WITH AIR is a pre-blended mix of fine and coarse aggregate and Type 10 Portland cement packaged in 30 kg sacks and in one cubic yard (.76 m3) bulk bags. It is available in compressive strengths of 25 MPa, 30 MPa, 35 MPa, and 40 MPa.

#### Is 25mpa concrete not good enough? - Home

Feb 16, 2018· 2. 25 Mpa concrete is simply not hard enough to polish. By the time I finish hardening and densifying the surface, its more like 60 Mpa+ Too much below that simply won't be able to be polished to a high gloss without the pullout of fine aggregate (e.g. sand) leaving the surface pitted and the shine non-existent

#### Concrete Calculator - Estimate Cement, Sand, Gravel ...

Our mix-on-site concrete calculation is based on batching by volume (Large construction sites employ batching by weight which is more exact). You can also estimate the quantity of sand and gravel required by weight; Simply multiply the volumetric quantity of sand and gravel with 1400 kg/m 3 (bulk density of sand) and 1600 kg/m 3 (bulk density ...

#### Concrete Mix Design Calculation - M20, M25, M30 ...

Concrete mix design is required to achieve target strength in structures. Concrete Mix design calculation of M20, M25, M30 grade of concrete with example.

#### Concrete Slab Load Capacity - Engineering ToolBox

Imposed loads varies from approximately 1.5 kN/m 2 (153 kg/m 2) in domestic buildings to approximately 10 kN/m 2 (1053 kg/m 2) in heavy industrial areas. 500 …

#### What does 25 mpa concrete mean - Answers

They're talking about compressive strength - the amount of force that can be applied to a defined area of the concrete before it fails. 25 MPa concrete in the states would be 3625 psi concrete ...

#### Quantities for ordering building materials

2. Medium-strength (25 MPa) concrete is suitable for unreinforced slabs, reinforced slabs and foundations, infill concrete in masonry (only with 13,2 mm stone). 3. High-strength (30 MPa) concrete is suitable for reinforced concrete members and precast items such as concrete …

#### weight 4 inch concrete can hold - Practical Machinist

Apr 25, 2011· weight 4 inch concrete can hold ... If the substrate was not good to start with, was not properly compacted or has settled, a surprisingly light weight or impact will break the slab. adama liked this post 04-24-2011, 10:19 PM #10. Dave A. View Profile View Forum Posts Titanium Join …

#### Convert MPa to psi - Conversion of Measurement Units

3 MPa to psi = 435.11321 psi. 4 MPa to psi = 580.15095 psi. 5 MPa to psi = 725.18869 psi. 6 MPa to psi = 870.22643 psi. 7 MPa to psi = 1015.26417 psi. 8 MPa to psi = 1160.3019 psi. 9 MPa to psi = 1305.33964 psi. 10 MPa to psi = 1450.37738 psi ›› Want other units? You can do the reverse unit conversion from psi to MPa, or enter any two units ...

#### Types of Concrete & Characteristics | Concrete Classification

The concrete in which common ingredients i.e. aggregate, water, cement are used is known as normal concrete.It is also called normal weight concrete or normal strength concrete. It has a setting time of 30 - 90 minutes depending upon moisture in atmosphere, fineness of cement etc.

#### Civiconcepts - Make Your House Perfect With Us

(Note 1: For every ±0.05 increase or decrease change in w/c, the coarse aggregate proportion is to be changed by 0.01.If the w/c is less than 0.5, volume of coarse aggregate is required to be increased to reduce the fine aggregate content in mix. If water cement ratio is more than 0.5, volume of coarse aggregate is to be reduced to increase the fine aggregate content.

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

What is the concrete mix ratio of 25MPa concrete? 25 MPa concrete is equivalent to a 3500 psi concrete mix. So the mix ratio is the same as above: 1 Part Cement; 3 parts Stone; 2.5 parts Sand; If I break the weights down to a cubic meter of concrete it equals: 1. 326 Kg of Cement. 2. 961 Kg of Stone (aggregates) 3. 867 Kg of Sand

#### MPA Explained | Vancouver Ready Mix - Concrete Supply

Concrete Strength. Concrete is measured by its strength capacity. MPa (megapascals) is the metric measurement for psi or pounds per square inch. The BC Building Codes require a minimum MPa for specific concrete projects. Please refer to the table to choose the appropriate MPa when calculating your volume and price.

#### Concrete driveway on acreage -25mpa or 32mpa?? - Home

Jun 17, 2018· Driveway is around 130-135m long with fishtail either end so it's around 420-440sqm of concrete all up (we are on acreage). It's a fairly straightforward job according to all the guys Iv had quote so far so am interested in what others think in terms of the variation in spec. Iv had some concreters quote 25mpa and others 32mpa.

#### Preparing the right mix for solid concrete | Farmstyle ...

Preparing the right mix for solid concrete 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.

#### Definition of Concrete MPa | Hunker

Concrete is a building material made from a mixture of cement, water, sand and gravel. Known for its strength and durability, concrete is used to construct buildings, bridges and roadways. To ensure a concrete structure will last, inspectors test the strength of the concrete once it has had time to dry.

#### What is Water Cement Ratio? Its Calculation [Complete Guide]

One of the most recent improvements in concrete manufacture is the control of water in the mixture. The ratio of the amount of water to the amount of cement by weight is known as 'Water—cement ratio, and the strength of concrete depends on this ratio.