Low strength mix is designed to provide 100-200 PSI of compressive strength and RHO design values of 70-80 Low-Strength LowRHO® concrete is used like controlled density fill (CDF) to backfill trenches over the high strength LowRHO duct banks, and also for encasement where high-strength is not desired. The flowable fill shall have a minimum pH of 4.0 and a minimum resistivity of 2,000 ohm-cm. Material shall be placed such that a minimum of 6" (measured perpendicular to the outside of the pipe) of flowable fill shall be under (bedding), over and, on the sides of the pipe. It only needs to extend up to the spring line for rigid conduits.
Services – Patriot Onsite Concrete. Our volumetric concrete batch trucks mix concrete on-site providing you with exactly the amount of concrete needed every time. We can supply pump-mix or regular mix concrete with strengths ranging from flowable fill to 5000 psi. Our trucks also have a fiber chopper for extra reinforcement and a metered color hopper that produces consistent color delivery. Properties of Flowable Fill Concrete. It has high lump (nearly 9 inch) but the strength is low, commonly 100 PSI (0.7 Mpa) in 28 days. It has low cementitious mix, does not hydrate and it settles and dewaters. The less water does not equate to faster hardening and too little water will not allow proper settlement.
6" 4000 PSI Concrete Excavatable 6' or Flowable Fill less in depth 1/2" or less cleaned washed limestone 6" 1/2" rebar 1/2" rebar dowel on center to extend acrossone direction of cut into existing concrete 8" 4000 PSI Concrete Excavatable Flowable Fill W' or less cleaned washed limestone min. 6" min. Concrete that doesn’t require vibration as a finishing technique. Good for use in aesthetic applications with smooth surfaces and pre-cast structures, such as tilt-up walls. Flowable Fill Low slump concrete that is useful in applications where concrete removal will be necessary in the future, such as pipe bedding and backfill.
Dec 09, 2009 · Flowable Fill is a construction material that is mixed in a concrete batch-plant and delivered in ready-mix concrete trucks to a construction site where it is commonly used to fill in voids in soil and bedrock to achieve an adequate bearing strength to support a building. It is a mixture of predominately sand, Portland cement, and water. Sep 18, 2003 · 1) All concrete repair material, or proprietary material submitted for approval, shall have a minimum 28 - day Compressive Strength of 5000 psi or as shown on the plans. 2) The beams to be repaired may require one or more of the basic repair methods listed below and will be so categorized elsewhere on the plans as follows: