It is a common phenomenon for the traditional concrete to crack, requiring maintenance and reparations before reinforcement starts to corrode. Luckily, it seems that Delft University microbiology professor Henk Jonkers has found the solution to this problem. Inspired by nature, he developed ‘Bio-concrete’, a new type of material that brings together biology and civil engineering and could save billions in construction costs by improving the lifespan of buildings, bridges and roads. "It is combining nature with construction materials. Nature is supplying us a lot of functionality for free - in this case, limestone-producing bacteria’’, says the professor.
The HM-500 Gilson Pocket Penetrometer, often referred to as a "hand penetrometer" or "hand pen" for short, is a lightweight, hand-held direct-reading soil penetrometer giving instant appoximate unconfined compressive strength of cohesive soils on site or in the lab. Soil Penetrometers are required by OSHA for trenching, excavation inspection and are valuable when assessing compaction.