Abstract Waste from construction and demolition (also known as CDW) is one of the most harmful environmental issues. This study's primary goal to produce new mortar brick materials recycled concrete powder (RCP) (RBP), two popular CDW. Geopolymeric samples were produced by passing RCP RBP through sieve No. 50 (with sand filler if necessary) combining them with an alkaline solution made water glass (WG) NaOH. In this study, mixture was then cured for three days at 80 °C in oven. The effects...

Sodium chloride (NaCl), commonly known as salt, is a substance that utilized in variety of businesses, including the tourism and construction industries. Therefore, main purpose this article to accommodate salt-based building material called NaCl-binder for tourist industrial applications. By utilizing salt mortar with varying grain sizes, food-grade corn starch an exclusive binder agent (without using any non-starch binder), water under microwave-cured conditions, environmentally friendly...

Microbial induced calcium carbonate precipitation (MICP) is one of the bio‐cementation methods for improving granular soils. This study evaluate feasibility obtaining a bacterial solution with high optical density and urease activity by an inexpensive corn steep liquor (CSL) medium in non‐sterile conditions order to achieve sand improvement. Corn media different concentrations (different dilution rates) were prepared and, without any autoclaving (non‐sterile conditions), percentage inoculum...

Background. In this research, the potential of microbially induced carbonate precipitation method for surface treatment sand samples Jabal Kandi dunes, located in adjacency Urmia Lake northwest Iran, was considered. Methods. Sporosarcina pasteurii used as ureolytic bacteria preparation microbial solution. Corn steep liquor containing urea an inexpensive growth media. The effects concentration cementation solution and number cycles were Because presence some hydrolyzed prepared suspension,...

Abstract Development after the 2004 tsunami in Aceh province included relocation of housing to disaster-safe areas, and community can continue their lives, especially northern western coastal regions Aceh. A few years that damaged beach, there was a change physiography coast (growing land), so people returned original activities. This paper aims describe changes management area patterns living adapt sustainable manner. discussion is essential, related new knowledge needed as reference for...

In this research, the potential of using microbial-induced carbonate precipitation method was considered for stabilization sand corn steep liquor, byproduct Glucosan Factory (Qazvin, Iran) and an inexpensive culture media preparation bacterial suspensions. Sporosarsina pasteurii, a urease-producing bacterium, used preparing suspension. The aim also to compare use industrial dehydrate calcium chloride tetra hydrate nitrate as reagents in cementation solutions treat loose silica samples...

Due to the need of construction industry implement structures with special and complex designs, mass customization lowest cost, especially reducing labor cost as well amount waste materials used, use concrete 3D printing can be appropriate solution these requirements fulfill options. As a result, comprehensive practical study major methods their development in was carried out this study. In addition, OPC-based geopolymer-based reviewed compared due advantages disadvantages using different...

A high amount of energy is required to produce different types clay and sand-lime bricks, a huge carbon dioxide released into the atmosphere. Also, brick waste from destruction dilapidated buildings pollutes environment. Application pozzolanic sources containing aluminosilicate alkaline activators can be beneficial in production geopolymer which do not need baked furnace recycled. laterite-based mix design was introduced this study as an environmental-friendly material. This type produced...

In recent years, the microbial induced calcium carbonate precipitation method (MICP) using mechanism of urea hydrolysis has been broadly examined for treatment rock, sand, mortar, and concrete. Researchers have studying addition solution to mortar or concrete during mixing later curing in cementation simultaneous mixing. this study, a low-cost obtained from ureolytic bacteria cultured corn steep liquor medium is used instead water make cement-sand mortar. The results suggest that 28-day...

This study explores the differences in perception between communities and practitioners regarding biopori-based water management technology context of flood Passeno Village, Baranti District, Sidenreng Rappang Regency, South Sulawesi Province, Indonesia. Employing a quantitative approach, involved 30 respondents, consisting 27 members farmer groups 3 practitioners. Data were collected through surveys using structured questionnaires analyzed descriptive inferential statistical techniques. The...

Background. In recent decades, the microbial and plant-derived urease have been used for sand stabilization by calcium carbonate precipitation method, especially with Sporosarcina pasteurii. However, using has received less attention. Purchasing extracted purified commercially available improvement is costly. The urease-containing crude extract (enzyme substance) cheaper than (commercial) urease. present study, feasibility of enzyme-induced method was investigated (extracted from soybean)....

Background/Objectives: In this research, various reasons of creation crack irrigation canals, uplift, and failure concrete lining, coping strategies with these problems were investigated. Methods/Statistical Analysis: the main APC canal, primary type canal trapezoid section includes executing a filter at bottom soil-cement mixture, then lining walls canal. The final reformed in lean concrete, also one-sided valve Findings: After first 13 kilometers beginning phenomenon uplift have been...

Carbon dioxide emission and consumption of large amounts natural resources are the environmental hazards observed in production process various commonly used construction materials, like Portland cement clay bricks. Also, debris from demolition old buildings disposing waste material factories also cause pollution. Producing environmentally friendly geopolymer materials with recycling wastes containing aluminosilicate alkaline activators could be an effective method for reduction hazards....

A huge amount of carbon dioxide is released in the Portland cement production process. large quantity greenhouse gases produced because significant energy consumption via making bricks through firing. Using pozzolanic sources containing aluminosilicate and alkaline reagents, a new type green materials called geopolymeric are with quite lower environmental hazards. The use laterite as an iron-rich material has high potential for building materials. In this study, effect curing temperature...

Variation in groundwater with excessive withdrawal is one of the causes land subsidence. Withdrawal level can cause an increase effective stress at thick clay layers, leading to In Rafsanjan plain Iran, due use groundwater, subsidence has caused earth fissures and damages buildings installations. water table may happen seasonal extraction spring summer for farming replacement rainfall fall winter. The behavior soils rise ground non-linear; therefore, a part settlements not be recoverable it...

Abstract Fish scale gelatin as an alternative to pork is largely demanded by the community. The can be used a stabilizer in production of ice cream. This study aimed define potential milkfish ( Chanos chanos ) with different concentrations this research were 0% control, 0.3%, 0.5%, and 0.7%. Samples analyzed such yield, gel strength, viscosity well protein, overrun, melting rate, hedonic tests on cream three times 100 replications. revealed that addition various had significant effect test...

Sargassum duplicatum is a brown seaweed containing various chemical compounds with potential applications as natural dye and antioxidant. These include alginate, protein, vitamin C, tannins, iodine, phenols, pigments such chlorophyll a, c, fucoxanthin, xanthophyll, carotene. Therefore, this study aimed to determine the effect of varying extraction times on color antioxidant quality extract. One methods used extract ultrasonication, which involves using ultrasonic waves break down cell walls...