The Low Strength Concrete Floor Slab
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This groundbreaking product was designed to deliver all the advantages of the industry s most effective building materials in a single cost effective.
The low strength concrete floor slab. High strength columns and normal strength slabs. 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. 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. Our concrete strengths range from grade c10 to c40.
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. The actual average cylinder strength for the floor concrete was 3630 psi. C10 with a strength of 8 newtons is designed for kerb backing and bedding. It sounds like you are asking what thickness and psi strength is needed to hold a fully loaded semi truck and trailer.
Concrete slab thickness recommended thickness of concrete slabs. The split tensile strength of concrete is determined using a split tensile test on concrete cylinders. Concrete mixtures cement sand and gravel mixtures. When a concrete floor slab is subjected to forces it flexes and bends.
The test should be performed according to the astm c496 standard. 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. Generally cement treated and lean concrete sub bases are 4 to 6 inches thick. Flexural strength is used as another indirect measure of tensile strength.
C40 our strongest concrete with a strength of 40 newtons is designed to withstand heavy duty loads. Controlled low strength material clsm or lean concrete sub base. Concrete walls estimate volume in concrete walls. 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.
Floors live loads floors and minimum uniformly distributed. Concern is often expressed about the capacity for the column loads to be transferred through the relatively weaker slab. Four months after the floor was placed 10 cores were drilled measured and tested in compression. These forces are a result of gravity pulling down on the slab while additional weight is applied to the top of the slab.
The bending and flexing creates high tensile forces that can cause the concrete floor slab to crack see figure 1. Flexural strength of concrete.
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