Influence of High Temperatures on Flexural Strength of Foamed Concrete Containing Fly Ash and Polypropylene Fiber

Salim²,

Tan

et al. 2014

E3S Web of Conferences

Abstract. This paper focuses on the contribution factors of building defects in Malaysian school buildings. There are several building defects commonly found in Malaysia school buildings. In fact, building defects are becoming ordinary phenomena in the construction industry which results in negative impacts on schools, in the means of building performance, health and safety aspects and overall environment conditions as well as teaching and learning processes. Thus, a study is planned to identify the common building defects faced by school buildings in Kedah, Malaysia. Then, a thorough inspection is conducted and the respective defects are recorded with the aid of photographic. As the outcomes from the interview between researcher and person-in-charge from some schools, the main factors contributing to those building defects had been determined. Besides, appropriate mitigation solutions on the building defects have been offered, which are extremely essential in retaining a healthy and serviceable school building.

Section: -P2mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of Significant Causes to School Building Defects

Salim²,

Tan

et al. 2014

E3S Web of Conferences

“…Another significant heritage building fire mishap happened on 11th December 2008, when fire destroyed 7 shops [7]. In Malacca, similar fire case reported to take place on 7 th August 2012, whereby a century old Lido theatre, had burnt down to ashes [8].…”

Section: Introductionmentioning

confidence: 99%

“…An unexpected delay will extends the overall duration of project activities and entails an increase in project costs [6]. It produces time-associated cost effects that will increase the resource consumption and will require extra time upon reaching project success [7].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Influential Causes of Construction Project Delay in Malaysian Private Housing from Developer’s Viewpoint

Sani

Salim³

et al. 2014

E3S Web of Conferences

Abstract. Project delay in the construction industry is a universal or large-scale observable fact affecting not only the construction industry but the overall economy of countries too. The objective of this study is to evaluate and identify the causes and consequences of project delays in the private housing development projects in Malaysia and the remedies that can minimize these delays. An online questionnaire survey has been carried out to collect the data and this included 76 respondents from multiple developers' companies around Malaysia. From the survey, a total of 28 causes and 6 consequences of project delays had been identified from four different factors of delays; such as client factors, consultant factors, contractor factors and external factors, by which the contractor factor being the major contributor to this problem.The top ten causes of the delays are due to weather conditions, poor site conditions, poor site management, incomplete documents, lack of experience, financial problems, contract modifications, delay in approving of major variations, contractor coordination problem with other parties and construction mistakes and defective works. The consequences of the delays would contribute to time overrun, cost overrun, different in opinions, negotiations, legal actions and total abandonment.

“…Concrete with brittle materials are crushed when the limit of compressive strength is reached. So, by definition, the compressive strength of a material is that value of axial compressive stress obtained when the material fails completely [16,17].…”

Section: Introductionmentioning

confidence: 99%

Axial Compressive Strength of Foamcrete with Different Profiles and Dimensions

MATEC Web of Conferences

Sudin

Sani

2014

Abstract. Lightweight foamcrete is a versatile material; primarily consist of a cement based mortar mixed with at least 20% volume of air. High flow ability, lower self-weight, minimal requirement of aggregate, controlled low strength and good thermal insulation properties are a few characteristics of foamcrete. Its dry densities, typically, is below 1600 kg/m 3 with compressive strengths maximum of 15MPa. The ASTM standard provision specifies a correction factor for concrete strengths of between 14 and 42MPa to compensate for the reduced strength when the aspect height-to-diameter ratio of specimen is less than 2.0, while the CEB-FIP provision specifically mentions the ratio of 150 x 300 mm cylinder strength to 150 mm cube strength. However, both provisions requirements do not specifically clarify the applicability and/or modification of the correction factors for the compressive strength of foamcrete. This proposed laboratory work is intended to study the effect of different dimensions and profiles on the axial compressive strength of concrete. Specimens of various dimensions and profiles are cast with square and circular cross-sections i.e., cubes, prisms and cylinders, and to investigate their behavior in compression strength at 7 and 28 days. Hypothetically, compressive strength will decrease with the increase of concrete specimen dimension and concrete specimen with cube profile would yield comparable compressive strength to cylinder (100 x 100 x 100mm cube to 100dia x 200mm cylinder).