Robust Calcifying Microbe for Enhanced Lifespan of Concrete Structures.
Bacillus pasteurii, also known as Sporosarcina pasteurii in older taxonomies, is a bacterium with the ability to precipitate calcium and solidify sand when provided with a calcium source and urea, through the process of microbiologically induced calcite precipitation, or biological cementation.
We isolated the calcifying bacterium Bacillus pasteurii (BP) from alkaline soil at a cow farm (urine-soil), which was trained and mutated for pH 12 conditions in tropical environments by the Vastu Vihar Research Team. This microbe has the ability to excrete a cementitious material that helps heal concrete when it cracks, and it also aids in minimizing damage. Therefore, it is also referred to as self-healing concrete. We also attempted to induce a gene that secretes a large amount of calcium carbonate at high pH.
In addition to the admixture consisting of Sporosarcina pasteurii bacteria, it affected neither the slump nor the initial setting time of the concrete.
The lifespan of the bacteria is about 200 years, and it can survive under adverse temperatures and pressures. This process is called MICP (Microbiologically Induced Calcite Precipitation). It has self-healing properties when used as an admixture. It repairs cracks and provides strength to concrete structures. It fills most of the pores through the precipitation of calcite, making the concrete less porous. By filling voids, it increases strength by up to 30%. It also decreases the initial and final setting times of cement. It reduces the permeability of concrete through pore filling. Additionally, it decreases the quantity of cement and increases the durability of the structure. For RCC, it prevents corrosion through the surface decomposition of CaCO3 by Bacillus pasteurii.
Welded Wire Girder
Welded Wire Girder is one of the most prominent methods to meet the need for a unique shear connector adequate for properly transferring or distributing loads between panels. It also prevents undesirable energy transfer by eliminating solid concrete sections in the entire panel—no high-stress points, no major thermal areas, no cold spots, no wet areas—resulting in a more efficient and cost-effective insulated wall panel. Most importantly, Welded Wire Girder not only connects the concrete widths through the insulation material but also has the resiliency to expand and contract with the independent thermal-induced movements of the outer widths.
Insulated Walls (4-Inch & 8-Inch)
We construct walls using the rat-trap bond walling technique. The rat-trap bond is a brick masonry method in which bricks are placed vertically instead of the conventional horizontal position, creating a cavity (hollow space) within the wall. This technique involves placing bricks on their sides to form a cavity of 80–100 mm, with alternate courses of stretchers and headers. The headers and stretchers are staggered in subsequent layers to provide additional strength to the walls. The primary advantage of this bond is its economy, as it uses fewer bricks than a solid bond while achieving a wall of one-brick thickness. This method provides strength equivalent to the standard 230 mm brick wall but consumes 25% fewer bricks.
- The overall savings on material costs for construction, compared to the traditional 230 mm wall, is approximately 26%.
- The air cavity created between the brick layers helps maintain good thermal comfort inside the building. This feature is particularly beneficial for the tropical climates of South Asian and other hot countries.
Insulated Roofs
The roofs of the units are insulated with filler slabs, with the filler material placed in the tension zone.
Pre-Fab Roofs
We use pre-fabricated, leak-proof roofing panels for commercial, educational, and domestic buildings. The thick insulation significantly reduces summer heat and the effects of the monsoon.
These pre-fabricated roofing panels are designed to withstand the challenges of nature and the test of time. They effectively reduce heat transmission by 8-12 degrees and also absorb and minimize the noise of rain. These roofing panels are aesthetically designed, soundproof, and weather-resistant. Being corrosion-free, they require low maintenance and are durable in nature, making them a cost-effective roofing solution.
Green Energy
We are always striving to reduce our carbon footprint on the environment by providing units with eco-friendly and non-polluting energy sources.
Solar Moving Roof
The roof of this unit rotates throughout the day depending on the position of the sun, thereby ensuring an optimal supply of electricity.
Solar Roof Light
We are using solar roof lights in our units, which are LED bulbs powered by solar energy to light up the house.
Solar Ac
We are providing solar air conditioners in our units to regulate the temperature of the house without using grid power.
Solar Water And Room Heater
We are also providing solar-powered water heaters and blowers in our projects that are used to heat the rooms.
Voc Free Construction
The removal of volatile organic compounds generated during construction in the house has been developed by our experts.
Micro-organisms Based sanitation System
Our R&D team has developed this breakthrough system, which harvests microorganisms. The microorganism-based sanitation system requires no periodic emptying of sanitation waste, making it continuously usable.