Conventionally, hollow concrete block (HCB) is produced from ordinary Portland cement (OPC) and pumice aggregate in Adama town-Ethiopia. This study aims DEVELOPMENT OF AN ECO-FRIENDLY AND LOW-COST HOLLOW CONCRETE BLOCK FROM NEW BLENDED CEMENT AND BINARY AGGREGATE: DEVELOPMENT OF AN ECO-FRIENDLY AND LOW-COST HOLLOW CONCRETE BLOCK
احصل على السعر
INVESTIGATION ON THE PROPERTY OF HOLLOW CONCRETE BLOCK USING RICE HUSK ASH AS A PARTIAL REPLACEMENT OF CEMENT 2018 Introduction. Modern housing construction in Ethiopia uses hollow concrete block (HCB) as walling material. As per Ethiopian standard, there are four classes of HCB namely: class Improving The Performance of Hollow Concrete Block
احصل على السعر
COMPARATIVE STUDY ON THE COMPRESSIVE STRENGTH AND PRODUCTION COST OF HOLLOW CONCRETE BLOCK (HCB) WITH AND WITHOUT This study aims to produce hollow blocks using waste plastic material in the ratio of 1:2, 1:3, 1:4, and 1:5 of hollow block size 40cm X 20cm X 10cm of different Production of Hollow Block Using Waste Plastic and Sand
احصل على السعر
The findings of the investigation have shown that in all producers, sufficient tests are not conducted for all ingredients used for production of hollow concrete blocks, 2014, Ethiopia’s cement f actories have a total ca- pacity of around 12.6 million metric tons per year[11] In 2017, Ethiopia has produced 10 million tons of(PDF) The Cement Industry in Ethiopia ResearchGate
احصل على السعر
INVESTIGATION ON THE PROPERTY OF HOLLOW CONCRETE BLOCK USING RICE HUSK ASH AS A PARTIAL REPLACEMENT OF CEMENT 2018 JIT, Construction Engineering and Management Page ii ABSTRACT Hollow Concrete Blocks (HCB) are one of the most widely used walling materials in the construction industry.Concrete Production in Ethiopian Construction Industry Abebe Dinku Addis Ababa University, Pumice and scoria are more widely used for hollow and solid concrete block production in Ethiopia. Normal weight aggregate is generally produced in Ethiopia by crushing parent rocks using mechanical crushers or traditional methods.The Need for Standardization of Aggregates for
احصل على السعر
Compressive strength of sawdust with additions of 3, 6, and 9% was 1.17, 0.99, and 0.51 N/mm 2,respectively. Replacement with 9% resulted in a higher rate of water absorption. The density ofPerformance Evaluation of Hollow Concrete Blocks Made with Sawdust Replacement of Sand: Case Study of Adama, Ethiopia K. Shantveerayya 1,Mahesh Kumar C. L. 2* ,Shwetha K. G. 2,F. Jima ,K. FufaInternational Journal of Engineering ResearchGate
احصل على السعر
Keywords: Conventional hollow concrete block; improved hollow concrete block; pumice; scoria; blended aggregate. 1. Introduction Modern housing construction in Ethiopia uses hollow concrete block (HCB) as walling material. As per Ethiopian standard, there are four classes of HCB namely: class A, B, C, and D. Class A to C are used forAs shown in the Figure 3.1, as the red ash amount in the hollow concrete blocks increas es up to 30% the compressive strength also increases from 2.01MPa to 3.6MPa. But after 30% to 100% t heCOMPARATIVE STUDY ON THE COMPRESSIVE
احصل على السعر
This study was conducted in Tepi Town which is located at 609 km from Addis Ababa and found in Keywords- Compressive strength, crushed aggregate, southern part of Ethiopia in Sheka Zone, hollow concrete blocks, production cost and red ash. coordinates:7o 12’N 35o27’E /7.2000N 35.4500E, I. INTRODUCTION found at an This research was conducted to examine the potential of basaltic crusher dust as a partial replacement for Portland Pozzolana cement in hollow concrete block (HCB) production. Quarry dust is one of the waste materials abundantly available and pozzolanic material in the quarry industry. In doing so, physical tests of cement pastes and hollow Utilization of Basaltic Quarry Dust as a Partial Replacement of Cement
احصل على السعر
The hollow load-bearing concrete blocks are made of standard sizes viz. The weight varies from 17-31 kg. The hollow blocks have one or more large holes or cavities. The cavities which pass through the blocks are called open cavities hollow blocks and those which do not effectively pass through the block are closed cavity block.A normal mix of 1:8 with water cement ratio of 0.55% was used. Sixty sandcrete blocks of size 450 mm x 225 mm x 150 mm of varying fibre content of 0% (control), 0.5%, 1.0%, 1.5% and 2.0% by weightMix ratios adopted by block making factories Download Table
احصل على السعر
Price Change; Price Amount Percent Last Checked; Brick 6X12X24 cm. 20.00 Br per 11 pcs: Jun 1, 2023: 10 cm. Thick HCB (Hollow Cement Block) 20.00 Br per pcs: 5.00 Br 25%uses. It can be used as a building material in concrete, solid and hollow concrete blocks, ceiling tiles, furniture, plywood etc. [1]. In rural Ethiopia, sawdust is used as fuel and reformed into charcoal briquettes. The construction industry in Ethiopia has skyrocketed over the past two decades, and many middle-class.International Journal of Engineering
احصل على السعر
Conventionally, hollow concrete block (HCB) is produced from ordinary Portland cement (OPC) and pumice aggregate in Adama town-Ethiopia. This study aims to improve the performance of conventionalduits, water, and soil pipes. In Ethiopia, dierent classes of hollow concrete blocks are produced with a variety of strengths. One of the reasons for its popularity is its incorporation of locally available materials (GTZ, 2003). Cement, as a binder, is the most expensive input in the production of hollow concrete blocks. In addition, the OpenUtilization of Basaltic Quarry Dust as a Partial
احصل على السعر
The Ethiopian building standard Code classified the Hollow concrete blocks into three classes. Such as, class A and B include load beading units and suitable for: External walls pointed, renderedUtilization of waste marble powder as a partial replacement of cement in HCB production. v ABSTRACT Hollow concrete blocks are one of the most extensively used wall construction material in major cities of our country, Ethiopia. Aggregates, cement, and water are the main materials required for the production of this building material.ADDIS ABABA UNIVERSITY ADDIS ABABA INSTITUTE OF
احصل على السعر
However, there have been instances of employing a lean mix of as high as 1:9 by manufacturers where hollow blocks are compacted by power operated vibrating machines. The. 8 water cement ratio of 0.62 by weight basis can be used for Concrete hollow blocks. (2) Mixing. The objective of thorough mixing of aggregates, cement and component such as cement and fine aggregate or sand. Like minimum Ethiopian strength is given in table 2 for quality control. Table 2. Ethiopian Standard Hollow minimum compressive strength requirements for block at age of 28 days [8] Type of Hollow Concrete Block Class Minimum Compressive strength( N/mm2) units Individual Units Laboratory Investigation of Locally Produced Clay Brick
احصل على السعر
Hollow concrete block is an alternative wall making material in the building construction having one or more large holes with the solid material between 50 and 75 percent of the total volume of the block calculated from the overall dimension. Most hollow concrete blocks have one or more hollow cavity manufactured from a zero-slump mixture Concrete Hollow Blocks, Pre-cast Concrete and Cast in HOLLOW BLOCKS: is a large rectangular block that is hollow inside and is used in building construction. Concrete blocks are made from cast concrete, e.g. Portland cement and aggregate, usually sand and fine gravel for high-density blocks. Lower density blocks may use industrial wastesingridients for hollow concrete blocks in ethiopia
احصل على السعر
منزل