Fast-curing pervious concrete mix

Abstract

A fast-curing pervious concrete mix made by combining : water; a cementitious material comprising portland cement and a supplementary cementitious material; aggregate sized to form a pervious concrete; a water reducer; a quantity of fibers; and a polymeric bonding agent, the mix curing to a compressive strength of at least 2,000 psi within 24 hours of placement. Also, a method of forming a pervious concrete structure by forming the fast-curing pervious concrete mix, placing the mix in a desired formation, and curing the placed mix, and a pervious concrete obtained by placing and curing the fast-curing pervious concrete mix.

Description

Background technique [0001] This application claims priority to U.S. Provisional Application No. 61 / 740,863, filed December 21, 2012, and U.S. Formal Application No. 14 / 134,659, filed December 19, 2013, the disclosures of which are incorporated by reference in their entirety incorporated herein for all purposes. [0002] Pervious concrete, also known as porous concrete, permeable concrete, no-fines concrete, enhanced-porosity concrete or high-porosity concrete, is composed of coarse aggregate, Portland cement and Water composites. Coarse aggregate is held together at its points of contact by a layer of paste formed from cement and water, forming a network of open pores or voids that allow fluid to drain through the cured material. Pervious concrete mixes generally include the same materials as used in ordinary concrete mixes, but in different proportions. In pervious concrete, water combines with the cementitious material, resulting in a thick paste that coats the aggregate...

AI Technical Summary

Problems solved by technology

For traffic-serving pavement applications, it is generally recommended that the pavement not be opened to construction or public transportation for seven days and that continuous curing is recommended until the pavement is open, which interrupts work progress, delays project completion and increases costs