Customer case abouteffect of concrete strength and slab thickness on floor

effect of concrete strength and slab thickness on floor

Effect of Concrete Strength and Slab Thickness on Floor

2001-3-1  The specification for the floor of a maintenance building called for a 6-inch slab thickness and concrete with a design compressive strength of 3000 psi. The actual average cylinder strength for the floor concrete was 3630 psi. Four months after the floor

get price

Effect of Design Variables on Floor Thickness

1992-1-1  Subgrade strength, base thickness, concrete strength, slab thickness and safety factor all have effects that control the design of a floor. Often the designer must estimate or use suggested values. What if values are changed? Some changes have a drastic effect, while others have only a nominal effect. "What if" calculations can help refine designs.

get price

Strength of Concrete in Slabs, Investigates along

2012-5-30  4.2. Investigation of Concrete in Old and New Floor Slabs . Building erected in 1942. Concrete (C) in the floor slab of an industrial building was investigated. Nine cores 80 mm in diameter were drilled from the whole thickness of the floor whose load- bearing layer was 115 mm thick. The obtained ultrasonic

get price

Effect of Openings in Slabs on Shear Strength

2020-10-26  Openings in concrete floor slab systems can have a significant effect on one-way and two-way shear strength of the slab. This effect is illustrated in this example for a concrete flat plate floor system shown in the figure below. The floor opening is cut to accommodate typical mechanical, electrical, and piping (MEP) systems needed for

get price

The Construction and Design of Concrete Slabs on Grade

2012-5-29  mix, joint design and performance, and the slab thickness. Floor Classifications Table 1 describes the nine classes of concrete floors according to ACI 302, Guide to Concrete Floor and Slab Construction. This table details some of the special considerations and finishing techniques that are appropriate for each class of floor.

get price

Effect of slab gravity load on slab-column connection with

2021-11-12  The compressive strength ratio of the column and slab concrete (f c c ′ / f c j ′) ranged from 1.03 to 1.44, and the aspect ratio of the slab thickness to the column width (h / c) was 0.5. Based on these test results, in typical cases, they reported that the effective compressive strength of the interior column without gravity load fully

get price

Design For Strength Concrete New Zealand

Simplified Thickness Design. For lightly-loaded commercial and industrial pavements, minimum thicknesses based on previous satisfactory performance may be selected from Table 2. Thickness design of a floor slab is dependent upon the following: Type and loading applied; Grade of concrete used; Support offered by the sub base and/ or subgrade

get price

Minimum slab thickness of RC slab to prevent undesirable

The composite slab, which is 840 mm wide and 1800 mm long, was cast with five different thicknesses ranging between 75 mm and 175 mm. Foamed concrete

get price

INDUSTRIAL FLOOR CONCRETE

2019-8-13  shrinkage. Industrial Floor Concrete can achieve a drying shrinkage value of less than 0,05% (0,5mm/1m length). • CEMENT: Shall be a CEM I or CEM II complying with SABS ENV 197-1. A minimum cement content of 310kg/ m³ is required to ensure the overall compressive and flexural strength performance of the concrete which

get price

Strength of Concrete in Slabs, Investigates along

2012-5-30  4.2. Investigation of Concrete in Old and New Floor Slabs . Building erected in 1942. Concrete (C) in the floor slab of an industrial building was investigated. Nine cores 80 mm in diameter were drilled from the whole thickness of the floor whose load- bearing layer was 115 mm thick. The obtained ultrasonic

get price

Slabs-On-Ground: Slab Thickness and Base Tolerances

2015-8-13  Slab thickness is the greatest single factor controlling the load-carry capacity of a slab-on-ground. While other factors including concrete compressive strength, the thickness and quality of the

get price

Influence of Slab Thickness on Punching Shear Strength

2008-3-1  Tests to study the influence of slab thickness on the punching shear strength of flat slabs clearly demonstrate the significant effect of size on the shear stress resistance, particularly for tests without shear reinforcement. New tests in which the slab thickness varied between 160 and 300 mm (6.3 and 11.8 in.) and tests by others with slabs

get price

The Construction and Design of Concrete Slabs on Grade

2012-5-29  mix, joint design and performance, and the slab thickness. Floor Classifications Table 1 describes the nine classes of concrete floors according to ACI 302, Guide to Concrete Floor and Slab Construction. This table details some of the special considerations and finishing techniques that are appropriate for each class of floor.

get price

Effects of Shore Stiffness and Concrete Cracking on Slab

With various conditions for slab construction cycle, the number of shored floors, tensile or compressive reinforcement ratio, compressive strength of concrete, construction live load, and slab

get price

How Thick Should a Concrete Slab be? The Constructor

🕑 Reading time: 1 minute Thickness of concrete slab depends on loads and size of the slab. In general, 6 inch (150mm) slab thickness is considered for residential and commercial buildings with reinforcement details as per design. Methods used for

get price

Minimum slab thickness of RC slab to prevent undesirable

The composite slab, which is 840 mm wide and 1800 mm long, was cast with five different thicknesses ranging between 75 mm and 175 mm. Foamed concrete was deliberately designed with a density of

get price

Simplified Effective Compressive Strengths of Columns

2020-7-24  High strength concrete (HSC), which has a compressive strength greater than 50 MPa, has been increasingly used in a number of applications, and reducing the cross-section of the column has been shown to lead to a more efficient use of floor space (Lee and Mendis 2004).By contrast, since increasing the compressive strength of slab concrete does not significantly contribute to enhancing

get price

Concrete Slab Surface Defects: Causes, Prevention, Repair

2014-4-14  Design and Control of Concrete Mixtures, EB001, and Diagnosis and Control of Alkali-Aggregate Reactions in Concrete, IS413. Crazing Crazing, a network pattern of fine cracks that do not penetrate much below the surface, is caused by minor surface shrinkage Concrete Slab Surface Defects: Causes, Prevention, Repair Figure 3.

get price

CCAA T48 Guide

2021-2-9  Q Concrete strengths up to 100 MPa are covered. Q Information on joints has been extended to cover armouring of joints and shear transfer at joints. Q An appendix on the design of dowels has been added. Q More worked examples are included. Q To assist designers in the calculation of the required base thickness and allow sensitivity checks of

get price

Influence of Slab Thickness on Punching Shear Strength

2008-3-1  Tests to study the influence of slab thickness on the punching shear strength of flat slabs clearly demonstrate the significant effect of size on the shear stress resistance, particularly for tests without shear reinforcement. New tests in which the slab thickness varied between 160 and 300 mm (6.3 and 11.8 in.) and tests by others with slabs

get price

Slabs-On-Ground: Slab Thickness and Base Tolerances

2015-8-13  Slab thickness is the greatest single factor controlling the load-carry capacity of a slab-on-ground. While other factors including concrete compressive strength, the thickness and quality of the

get price

Effects of Shore Stiffness and Concrete Cracking on Slab

With various conditions for slab construction cycle, the number of shored floors, tensile or compressive reinforcement ratio, compressive strength of concrete, construction live load, and slab

get price

Residential Concrete Slab On Ground Floors

2018-12-20  Concrete slab-on-ground floors for timber buildings of NZS 3604:2011 Timber-framed buildings or any other related Standard. please refer to the Standards for full details. FiNiShEd Slab lEvElS NZS 3604:2011 Figure 7.11 gives the minimum finished floor levels above the outside surface finish for concrete slab-on-ground construction for timber-

get price

How Thick Should a Concrete Slab be? The Constructor

🕑 Reading time: 1 minute Thickness of concrete slab depends on loads and size of the slab. In general, 6 inch (150mm) slab thickness is considered for residential and commercial buildings with reinforcement details as per design. Methods used for

get price

Minimum slab thickness of RC slab to prevent undesirable

The composite slab, which is 840 mm wide and 1800 mm long, was cast with five different thicknesses ranging between 75 mm and 175 mm. Foamed concrete was deliberately designed with a density of

get price

First-floor concrete slabs -What you need to know. ECO

2019-7-24  First-floor slab thickness. The normal thickness used for reinforced concrete slabs in South Africa is 170 mm for small slabs, 255 mm for slabs larger than 5m x 5m and 340 mm thick for long-span slabs forming part of a beam and carrying heavier

get price

Different Types of Concrete Strengths and Their Uses

2017-7-23  Strength: 20 Newtons after 28 days. Concrete at this strength is often applied on domestic floors and foundations where the weight of overall structures on the concrete will be lighter. C20 is ideal for domestic workshop and garage bases as well as driveways and internal floor slabs. GRADE: C25 CONCRETE. Strength: 25 Newtons after 28 days.

get price

8 CHAPTER 8: DESIGN OF ONE-WAY SLABS

2012-4-7  Once design compressive strength of concrete and yield stress of reinforcement are specified, the next steps are followed: 1. Select representative 1 m wide design strip/strips to span in the short direction, as shown in Figure 8.4.a. 2. Choose a slab thickness to

get price

CCAA T48 Guide

2021-2-9  Q Concrete strengths up to 100 MPa are covered. Q Information on joints has been extended to cover armouring of joints and shear transfer at joints. Q An appendix on the design of dowels has been added. Q More worked examples are included. Q To assist designers in the calculation of the required base thickness and allow sensitivity checks of

get price

Booking Online

#