The Low Strength Concrete Floor Slab

The bending and flexing creates high tensile forces that can cause the concrete floor slab to crack see figure 1.

The low strength concrete floor slab.

The test should be performed according to the astm c496 standard. A modulus of sub grade reaction of 400 to 500 psi inch can be used in calculating the required thickness of floors placed directly on lean concrete and cement treated or roller compacted sub bases. Generally cement treated and lean concrete sub bases are 4 to 6 inches thick. The actual average cylinder strength for the floor concrete was 3630 psi.

The economic design of a high rise frame building may call for high strength concrete in the columns and a lower strength in the floor slabs. Flexural strength of concrete. The split tensile strength of concrete is determined using a split tensile test on concrete cylinders. Concrete mixtures cement sand and gravel mixtures.

Flexural strength is used as another indirect measure of tensile strength. It sounds like you are asking what thickness and psi strength is needed to hold a fully loaded semi truck and trailer. It is defined as a measure of an unreinforced concrete slab or beam to. This groundbreaking product was designed to deliver all the advantages of the industry s most effective building materials in a single cost effective.

Floors live loads floors and minimum uniformly distributed. C10 with a strength of 8 newtons is designed for kerb backing and bedding. Concrete walls estimate volume in concrete walls. T slab is an all new patented slab system that leverages the time tested principles of roman arch design and multiple concrete types to deliver a stronger lighter and more versatile slab.

Concrete slab thickness recommended thickness of concrete slabs. High strength columns and normal strength slabs. Our concrete strengths range from grade c10 to c40. 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.

Controlled low strength material clsm or lean concrete sub base. Concrete strength is measured by the weight in can withstand 28 days after it has been laid and cured. Floor joists capacities carrying capacities of domestic timber floor joists grade c in metric units. When a concrete floor slab is subjected to forces it flexes and bends.

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. Four months after the floor was placed 10 cores were drilled measured and tested in compression.