From this foundation, J&A strives to exceed clients' expectations for quality workmanship, deliver streamlined project completion and develop extensive client services. Founder Antonio Martins Sr has made quality the mainstay of this family-owned company. Since it began in 1971 J&A Concrete Corp has focused on excellence and innovation, working with construction partners to get the job done efficiently and effectively. Originally, we concentrated on cast-in-place concrete foundation projects with concrete slabs on metal deck.