Analisis Batako Dengan Campuran Serbuk Kaca Sebagai Pengganti Pasir

One of the innovations in the use of glass waste in the construction sector is as a mixture of concrete brick. In this research glass dust from a building demolition in the Klandasan area of ??Balikpapan was used as a substitute for sand in a mixture of concrete brick. This research aims to analyze the use of glass powder as a substitute for sand in a mixture of concrete brick based on SNI 03-0349-1989. Concrete brick specimens are made with a cement and sand ratio of 1: 6. The variation in the replacement of glass powder used is 0%, 25%, and 50% of the composition of the sand. From the results of the analysis it was found that the water absorption capacity of the concrete brick with the addition of glass powder to the mixture of the concrete brick as a substitute for sand in the 0% concrete brick glass powder was 5.13% greater than the variation of 25% glass powder and 17.1% greater than the 50% variation of glass powder. The compressive strength of the concrete brick making with the addition of glass powder as a substitute for sand in the mixture of the concrete brick compressive strength of 25% glass powder is 11.11% better than oncrete brick 0% glass powder and compressive strength of the concrete brick 50% glass powder is better 33.33% than concrete brick 0% glass powder. Based on SNI 03-0349-1989, water absorption and compressive strength on concrete brick with the addition of glass powder as a substitute for sand still meet the requirements

Pengaruh Penambahan Serbuk Kaca Dan Abu Sekam Pada Tanah Lunak Berdasarkan Uji Konsolidasi

It can not be avoided when the construction must stand on soft soil, then the construction will suffer damage due to subsidence or congestion from soft soil. To improve soft soils as one part of the construction of them is the method of chemical stabilization of the soil. The stabilizer material mixed was 10% glass powder and the percentage of husk ash was 0%, 2.5%, 5%, 7.5% and 10% of the dry weight of the original soil sample. Changes in the characteristics of soft soil and stabilized soils are reviewed based on the consolidation test. Based on the results of the study, the value of the void ratio decreases with increasing glass dust and husk ash, where the lowest void ratio is 0.5328 obtained in the addition of 10% glass powder and 7.5% husk ash. A decrease in the void ratio indicates a decrease in the compression index (Cc) and the swelling index (Cs). The lowering of the compression index and the swelling index indicate that the addition of glass powder and husk ash causes the soft soil sample to become denser. The lowest compressive index and swelling index values ​​were obtained in soil sample specimens with the addition of 10% glass powder and 10% husk ash, which respectively decreased by 35.165% and 75.757% when compared to the condition of the original soil sample.

Use of Glass Dust to Improve Concrete Strength on Offshore Platform Installations

The primary aim of this study is to investigate the influence of using glass dust as an additional in conventional concrete material on the properties of fresh and hardened concrete. Soil pollution happen when non-biodegradable materials disposed into land. However, the used of this nonbiodegradable can do wonder for construction purposes. This is due to the non- biodegradable materials which cannot be broken down to simple organic molecules by micro-organisms. Glass dust is one of the example of non- biodegradable. Nowadays, the used of this dust becoming more popular due to its properties. In this study, the glass dust which consist of silica has being used as an additional ingredients to concrete cement. The concentrations of the glass has being varies to determine the mechanical properties e.g. compressive strength of M35 grade concrete. The variation of glass dust are from 10, 20 and 30%. The compressive strength of concrete cubes is tested after 7 and 14 days. The outcomes of the study are presented in tables and graphs.

A study on health profile of manjha makers in district Bareilly

Background: Bareilly is famous for its manjha all over the world. More than 20,000 workers are engaged in the making the Manjha in Bareilly which is an important unorganized sector in western Uttar Pradesh. Objective was to study health profile of manjha makers in district Bareilly.Methods: The workers engaged in making manjha were randomly approached in the selected areas and interviewed using a semi open ended questionnaire. Responses were marked based on duration and severity of symptoms.Results: The mean age of study participants was 31±9.9 years. The mean age of starting manjha making was 15.3±6.7 years. 51 (47.2%) study participants were having wounds and cuts in hands and fingers.Conclusions: Manjha makers are in direct contact with inhalable glass dust (silica dust) and chemical colors which can reach the circulation through cuts and wounds. The higher prevalence of musculoskeletal and respiratory symptoms as well as other symptoms like cut wounds in hands and possible absorption of dyes through cuts underlines the need of a larger study to know the factors causing these symptoms and ways to prevent the suffering of manjha makers.

The combination of glass dust and glass fiber as fluxing agents for ceramifiable silicone rubber composites

A novel ceramifying silicone rubber composite filled with mica powder, glass dust and glass fiber was prepared for high-temperature applications.