PDF A review of the quality of crushed rock aggregate based on

In Sri Lanka aggregate is usually produced from granite, or granite-gniesses. Aggregates produced from these materials have high strength, good resistance to abrasion and fragmentation and good surface characteristics with low absorption. Therefore it is important to make optimum use of these characteristics in aggregate production. Other types of rock intrusions are usually encountered in


Soil Tech (Pvt) Ltd., Sri Lanka . 2. Faculty of Engineering, Sri Lanka Institute of Information Technology, Sri Lanka . ABSTRACT. Lightweight blocks can reduce time and cost of masonry wall construction. Several investigations are being carried out to produce lightweight cement blocks. Some of them are autoclaved aerated concrete, use of aggregates

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Lightweight Aggregate Concrete - Properties, Uses and

Lightweight aggregate concrete is prepared by using lightweight aggregate or low density aggregate such as volcanic pumice, clay, slate, shale, scoria, tuff and pellite. Concrete is considered to be lightweight is the density is not more than 2200 kg/m 3 , when compared to normal concrete which is 2300-2400 kg/m3

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TOKYO CEMENT COMPANY (LANKA) PLC: Tokyo Cement Company (Lanka) PLC is a holding company. The Company's principal activities include manufacture and supply of ordinary Portland cement, Portland pozzolana cement, tile adhesives, water proofing products, pre-mix concrete, ready-mix concrete, cellular lightweight concrete (CLC) blocks, power generation, and manufacturing of sand and aggregate.

AASHTO M 195 - Standard Specification for Lightweight

Note 1-This specification is regarded as adequate to ensure satisfactory lightweight aggregates for most concrete. It is recognized that it may be either more or less restrictive than needed for some conditions and for special purposes, such as fire resistance, fill, and concrete constructions, the use of which is based on load tests rather

Strength Properties of Concrete Containing Coconut Shell

studies on coconut shell as aggregate replacement in concrete [6]. Coconut is one of the most important natural fillers produced in tropical countries such as Malaysia, Thailand, Sri Lanka, Ghana and Nigeria [6]. Research had showed that coconut is grown in more than 86 countries globally, with a total production of 54 billion tons per annum [7].


Keywords: Sri Lanka, Construction, Concrete, Sea-sand, Crushing strength, Chloride content reinforcement corrosion in lightweight aggregate . high-strength fly ash concrete, Construction an d .

COVID-19 pandemic in Sri Lanka - Wikipedia

The COVID-19 pandemic in Sri Lanka is part of the worldwide pandemic of coronavirus disease (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).The first case of the virus was confirmed in Sri Lanka on 27 January , after a 44-year-old Chinese woman from Hubei Province in China was admitted to the National Institute of Infection Diseases.