Interdependence of microstructure and strength of structural lightweight aggregate concrete

Sarkar, S.; Chandra, Sulekh; Berntsson, Leif

doi:10.1016/0958-9465(92)90022-n

Cited by 67 publications

(33 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Sarkar, et al, [16] have tested four LWA: Swedish Leca, and Liapor 5, 6, and 8 of German origin. The difference between the water absorption thus measured will indicate the fraction of non-interconnected pores.…”

Section: � Water Absorptionmentioning

confidence: 99%

Lightweight Aggregate Concrete Microstructure

Chandra

Berntsson

2002

Lightweight Aggregate Concrete

View full text Add to dashboard Cite

Section: � Water Absorptionmentioning

confidence: 99%

Lightweight Aggregate Concrete Microstructure

Chandra

Berntsson

2002

Lightweight Aggregate Concrete

View full text Add to dashboard Cite

“…It is suggested that mechanical strength of LWAC develops faster at early stage. According to several literatures [30,31,7], The densification of the interfacial transition zone due to absorption of the LWAs already has considerate influence at early age (7-14 days). And after hydration for nearly 28 days, the water release effect of LWAs plays an important role on internal curing, which favors the interfacial zone between aggregates and cement paste.…”

Section: Grey Correlation Analysismentioning

confidence: 99%

Effects of particle characteristics of lightweight aggregate on mechanical properties of lightweight aggregate concrete

Xiong

Zhang

et al. 2014

Construction and Building Materials

View full text Add to dashboard Cite

“…This is essentially because the shear strength of the LWA controls the failure of the concrete matrix, and therefore becomes the weak link in the system (Sarkar et al, 1992). However, there is a scarcity of data on the effects of the inclusion of the SPFA replacement materials after shorter curing periods.…”

Section: Research Significance and Objectivesmentioning

confidence: 99%

Adoption of artificial lightweight aggregate in precast manufacture

Robinson¹,

Austin²,

Palmeri³

2013

Magazine of Concrete Research

View full text Add to dashboard Cite

This study investigates the incorporation of lightweight sintered pulverised fuel ash (SPFA) as a partial/ complete replacement for natural sand and aggregates within full-scale precast elements. It focuses on selfcompacting concrete (SCC) mixes after short periods of strength development, owing to the lack of published experimental data for these concrete types and their significance in offsite manufacture. Aggregate failure means the use of SPFA reduces concrete capacity, particularly in shear and pull-out, and such reductions may be more prominent at an earlier stage of curing. These were investigated alongside the incorporation of steel fibres that may provide some compensation. The variation in the compressive strength obtained was less significant (3-5%), following 24 h of curing, than at 28 d (15%). A similar trend was observed across the range of densities and in the tensile and flexural strength tests, with a slightly increased workability also observed in the lightweight mixes. Similar testing of steel-fibre-reinforced concrete (SFRC) samples, with a 50 kg/m 3 fibre content, challenges the appropriateness of current code design equations. More efficient element design may thus be possible for precast components where such design cases are prevalent. A 63% average increase in pull-out shear capacity also suggests an improved lifting capacity could be justified within precast elements.

show abstract

Interdependence of microstructure and strength of structural lightweight aggregate concrete

Cited by 67 publications

References 6 publications

Lightweight Aggregate Concrete Microstructure

Lightweight Aggregate Concrete Microstructure

Effects of particle characteristics of lightweight aggregate on mechanical properties of lightweight aggregate concrete

Adoption of artificial lightweight aggregate in precast manufacture

Contact Info

Product

Resources

About