DE202023100164U1 - Composition of a cementless Geoploymer mix for a paving system - Google Patents

Abstract

Composition of a cementless Geoploymer mix for a paving system, consisting of: b) 30-40% sugar cane bagasse ash; c) fly ash: 20-30%; d) blast furnace slag 40-50%; e) sodium silicate; f) sodium hydroxide; and wherein the sodium silicate and sodium hydroxide is used as a chemical mixture.

Description

The present invention relates to the field of pavers. More particularly, the invention relates to a composition of a cementless Geoploymer mix for a paver system

One of the most important aspects of the construction industry that has an impact on the environment is the use of concrete. Concrete is the most popular building material in the world, and its production contributes significantly to the high levels of carbon dioxide in the atmosphere.

Rapid urbanization has led to an increase in environmental problems, including disposal of discarded solid waste. Numerous studies have been conducted over the past two decades to find and provide suitable solutions for the recycling and recovery of solid waste. Another important impact of urbanization is the increased demand for building materials, especially concrete. The production of concrete consumes huge amounts of natural resources and causes serious ecological changes.

Civil engineers must therefore look for suitable materials that can replace conventional concrete components in whole or in part. A variety of waste products can be used in the manufacture of concrete as an alternative to aggregate. Paving blocks are a type of concrete block used not for walls but for outdoor flooring and road construction. Although some pavers have surfaces that can be used on both sides, most concrete pavers have two sides that can be used, one smooth and one rough.

The use of concrete pavers in internal roads, parking lots, gardens and footpaths is becoming more and more common these days. Concrete pavers are a better option for parking lots compared to conventional bitumen and gravel roads because the lifespan of concrete is longer than that of bituminous pavement. Using plastic waste in concrete pavers is a partial solution to environmental and ecological challenges. Disposal of plastics in the environment is considered a major problem due to their low biodegradability and their presence in large quantities. The plastic wastes are dumped into the rivers, affecting people's health, environment, fertile land, water sources, etc. In this study, the density of waste plastic powder is calculated and used as a partial substitute in paving stones. The synthetic powder can be used as a partial replacement for sand, significantly changing the properties of the paving stone. The pavers made with different amounts of plastic waste powder are tested for their strength and water absorption. After the paving stone has been poured, the paving stones are tested in the laboratory and the results are analyzed in terms of water absorption and compressive strength. It has been found that replacing 30% waste plastic powder results in higher compressive strength and is more cost effective compared to other paver mixes and traditional pavers. The aim of this research is to produce an economical paving stone to preserve the environmental balance and avoid the problem of plastic waste disposal. Also, the paving stone is expected to meet the compressive strength according to the recommendations and reduce the cost of the stone and environmental pollution, while the present invention contains less cement, which is made entirely of waste materials and requires no curing.

The present invention relates to a method of manufacturing paving stones using scrap rubber. The aim of the proposed invention is to use scrap tire material and replace the fine aggregates with scrap tire rubber ash (in powder form) and rubber fibers (in shredded form). The composition for the production of sustainable rubbed concrete pavers consists of cement (15.83%, 365 kg), fine aggregate (26.50%, 611 kg), coarse aggregate (48.79%, 1125 kg), waste rubber ash (1.69 %, 39 kg), waste rubber fibers (1.34%, 31 kg), water (5.55%, 128 kg) and superplasticizer (0.30%, 7 kg) for the production of one cubic meter of concrete. Draw the proposed pavers characterized by high energy absorption capacity, better abrasion resistance and lower water absorption, the present invention combining waste materials (sugar cane bagasse ash, fly ash, blast furnace slag) and the end product, i. H. the paving stone, with the aforesaid mixture of waste materials. Methods already used by industry include the production of concrete either with cement alone or by mixing the cement with fly ash or blast furnace slag.

However, the references mentioned above and many other similar references suffer from one or more of the following disadvantages or limitations: (a) high cost; (b) Use of recycled materials from different sources such as plastic waste, rubber waste, coal combustion and many others; (c) solution that can only be used to construct buildings; (d) not high strength that can be used for sidewalk construction; and (f) using high temperatures for the manufacture of pavers. Society still has a constant need for new and innovative pavers. Likewise, there is a constant need for new paving stone materials and their preparation methods that will help reduce manufacturing costs and provide high quality paving stones. In this context, the present invention is useful; not only to provide high quality products, but also cheap and further also help in reducing the solid waste generated from agriculture, industry or industrial by-products.

In order to solve the problem, the present invention provides a cementless geoploymer mix for a paver system with the following advantages. Use of solid waste/industrial waste/industrial by-products as an ingredient for the manufacture of paving stones. Reducing the accumulation of solid plastic waste in the environment. Our environment is becoming more environmentally friendly. The paving stone produced is of high quality and inexpensive.

An object of the present disclosure is to provide a cementless geoploymer mix for a paver system.

Another object of the present disclosure is to provide a process for the manufacture of geopolymer blend paving blocks using solid waste or industrial waste/industrial by-products.

Another object of the present disclosure is the use of solid waste in the manufacture of geopolymer composite pavers to reduce the accumulation of solid waste in the environment.

Another object of the present disclosure is that the developed composition can aid in the production of sustainable pavers.

Another objective of the present disclosure is to reduce cement consumption and thereby reduce carbon emissions and global warming.

Another objective of the present disclosure is to turn waste into wealth, resulting in a circular economy by using waste materials such as fly ash, sugar cane bagasse ash, and blast furnace slag and conserving natural resources.

The present invention relates generally to the composition of a cementless Geoploymer mix for a paver system.

One embodiment of the present invention is the use of waste materials such as sugar cane bagasse ash, fly ash, blast furnace slag as a partial cement replacement.

Another embodiment of the invention is that the solid waste is a less expensive alternative to cement and does not require curing.

Another embodiment of the invention is that the paving stones produced have improved properties such. B. Better curing properties, faster curing and better durability.

Another embodiment of the invention is that the pavers can be manufactured at normal room temperature.

A further embodiment of the invention is that the production of the paving stone system involves fewer disposal problems and less energy consumption.

The description of the invention relates to a paving stone system. Paving blocks are excellent for heavy-duty applications due to their durability, which allows them to carry tremendous loads and withstand braking and shearing pressures. Cobblestones, often referred to as interlocking pavers, have long been used as a common problem-solving technique for creating pavement in situations where traditional paving techniques are less reliable due to a variety of technical and environmental limitations.

EXAMPLE 1: Types of pavers

The composition of the cementless Geoploymer mix for a paver system was restricted to areas free of traffic. Examples of this type of paving stones are sidewalks, shopping malls, pedestrian streets, landscapes, monuments, buildings, public gardens/parks, shopping malls, bus stations, parking lots and train platforms.

• Typ A Gerade Pflastersteine mit vertikalen Seiten, die nicht ineinandergreifen, wenn sie in einem beliebigen Muster verlegt werden. Diese Bauweise ermöglicht den Zugang zu unterirdischen Versorgungsleitungen und schützt gleichzeitig vor Beschädigungen durch Arbeiten an der Oberfläche.
• Pflastersteine des Typs B mit abwechselnd glatten und gewölbten/geriffelten vertikalen Flächen rasten beim Verlegen in einem beliebigen Muster über die gewölbten/geriffelten Flächen ineinander ein.
• Typ C Pflastersteine mit allen gebogenen oder gewellten Flächen gleiten ineinander, ebenso wie solche mit allen vertikalen Flächen, wenn sie in einem beliebigen Muster verlegt werden.
• Typ D Die „L“- und „X“-förmigen Pflastersteine greifen ineinander sowie in alle vertikalen Flächen, wenn sie in einem beliebigen Muster verlegt werden, und sorgen für Rutschfestigkeit und Rutschsicherheit.

The four types of pavers correspond to four standard types of pavers:

• Type A Straight pavers with vertical sides that do not interlock when laid in any pattern. This design allows access to underground utilities while protecting against damage from surface work.
• Type B pavers with alternating smooth and convex/fluted vertical surfaces will snap together when laid in any pattern across the convex/fluted surfaces.
• Type C pavers with all curved or corrugated faces slide into each other, as do those with all vertical faces when laid in any pattern.
• Type D The 'L' and 'X' shaped pavers will interlock with each other and any vertical surfaces when laid in any pattern, providing slip resistance and slip resistance.

The present invention would reduce cement consumption and hence carbon emissions and global warming. Second, it would reduce the energy consumption associated with cement production. Third, by using waste materials such as fly ash, sugarcane bagasse ash, and blast furnace slag, it would convert waste into wealth, leading to a circular economy. Fourth, it would conserve natural resources.

EXAMPLE 2: Composition of the paving stone

The Geoploymer mixture developed as part of the research is a combination of three mostly available wastes, e.g. sugar cane bagasse ash, fly ash and blast furnace slag, through a unique mixture. The mixture must be activated by a chemical mixture that achieves the desired strength at room temperature without heat curing. The proposed solution is cement-free, consists entirely of waste materials and does not require curing. 30-40% sugar cane bagasse ash, 20-30% fly ash, 40-50% blast furnace slag, sodium silicate and sodium hydroxide.

EXAMPLE 3: Fly Ash

Fly ash is produced from pulverized or crushed coal by any suitable method such as B. an electrostatic precipitation extracted. The fly ash collected in the later stages of electrostatic precipitator is finer than the fly ash collected in the early stages of electrostatic precipitator. The specific gravity of the fly ash is given as 1.81.

EXAMPLE 4: Blast Furnace Slag

Blast furnace slag is obtained by quenching molten iron slag from a blast furnace in water or steam to produce a glassy, granular product which is then dried and ground into a fine powder, bagasse ash being an abundant by-product of the sugar and ethanol industries is.

EXAMPLE 5: Chemical Mixture

A combination of sodium hydroxide and sodium silicate is used as a chemical mixture. Solid sodium hydroxide (NaOH) was used in the form of lumps. NaOH solution. Heat 4 to 8 grams of sodium hydroxide in 10 milliliters of water. Once the sodium hydroxide has dissolved, slowly add 6 grams of crushed silica gel beads. At the same time, the solution is heated between additions.

Finally, dissolve 150 ml of sodium hydroxide and 30 ml of sodium silicate in 20 ml of water to obtain a chemical mixture of 200 ml, enough to make 10 to 15 Geoplayer blocks of 15*15 cm.

The pavers were made from two parts: a) a powder mixture (fly ash + blast furnace slag + bagasse ash) and b) a chemical mixture (sodium silicate + sodium hydroxide). The end user has to buy coarse and fine aggregates and use the proposed products and can produce the pavers at normal room temperatures.

EXAMPLE 6: Evaluations

The pavers produced were tested for compressive strength, flexural strength, splitting tensile strength and water absorption. The results showed that the pavers produced had improved properties such as better curing properties, faster curing and better durability.

examples

1. a) 30-40% Zuckerrohr-Bagasse-Asche
2. b) Flugasche: 20-30%
3. c) Hochofenschlacke 40-50%
4. d) Natriumsilikat; und
5. e) Natriumhydroxid.

wobei das Natriumsilikat und Natriumhydroxid als chemische Mischung verwendet wird.1. Composition of a cementless Geoploymer mixture for a paving system, consisting of

1. a) 30-40% sugar cane bagasse ash
2. b) fly ash: 20-30%
3. c) blast furnace slag 40-50%
4. d) sodium silicate; and
5. e) sodium hydroxide.

wherein the sodium silicate and sodium hydroxide is used as a chemical mixture.

Claims (2)

Composition of a cement-free Geoploymer mix for a paving system, consisting of : b) 30-40% sugar cane bagasse ash; c) fly ash: 20-30%; d) blast furnace slag 40-50%; e) sodium silicate; f) sodium hydroxide; and wherein the sodium silicate and sodium hydroxide is used as a chemical mixture. Composition of a cement-free Geoploymer mixture for a paving system claim 1 , where the required temperature is room temperature.