Abstract: Disclosed herein are compositions, tools and methods for the manufacture of construction materials, masonry, solid structures and compositions to facilitate dust control. More particularly, the disclosure is directed to the manufacture of bricks, masonry and other solid structures using small amount of aggregate material that is pre-loaded with spores and/or vegetative bacterial cells.

Abstract: There is provided a method for producing construction material utilizing loose pieces of aggregate, enzyme producing bacteria, an amount of urea and an amount of calcium ions. A first solution is prepared which includes urease which is formed by enzyme producing bacteria. A second solution is prepared which includes urea and calcium ions. The first and second solutions are added to the loose aggregate. The calcium ions contribute to the formation of calcium carbonate wherein the calcium carbonate fills and bonds between at least some of the gaps between the loose pieces of aggregate forming a solid construction material.

Abstract: There is provided a method for producing construction material utilizing loose pieces of aggregate, enzyme producing bacteria, an amount of urea and an amount of calcium ions. A first solution is prepared which includes urease which is formed by enzyme producing bacteria. A second solution is prepared which includes urea and calcium ions. The first and second solutions are added to the loose aggregate. The calcium ions contribute to the formation of calcium carbonate wherein the calcium carbonate fills and bonds between at least some of the gaps between the loose pieces of aggregate forming a solid construction material.