Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
RECYCLING OF AGGREGATE CONCRETE MATERIALS
Development of cities is increasing at an alarming rate now a day. This development demands for a huge amount of building material. The stone aggregates being a major component of concrete are not locally available in the cities and hence acute shortage is faced by the construction industry. Further, due to demolition of old structures in cities the waste concrete is laying as it is without any use and with no specific dumping place. Thus it is required to recycling and reusing the waste material with any possible manner. In the present study recycled aggregates are used in the concrete and the effect of nano silica and micro silica on recycled aggregate concrete has been investigated. In the first series of tests natural aggregates are replaced by recycled aggregates in varying percentages i.e. 20%, 30%, 40% and 50%. In the second series of tests, cement was partially replaced by micro silica and nano silica by 5%, 8% and 10% and 1%, 2% and 3% respectively both in natural aggregate concrete and recycled aggregate concrete. Further, cement was replaced by both nano silica and micro silica ie. (1%, 2%) and (5%, 8%) respectively in concrete containing fresh aggregates as well as partial recycled aggregates. The results obtained from the study showed that a maximum decrease of 18% was observed when 50% recycled aggregates are used. The addition of both nano silica and micro silica improved the compressive strength at early ages in natural as well as recycled aggregate concrete. The maximum compressive strength was observed in concrete containing 2% Nano silica & 5% Micro silica. Maximum compressive strength for nano silica and micro silica was observed at 2% and 8% respectively. Increase in about 30% of strength was observed when combinations of 1% nano silica with 8% micro silica& 2% nano silica with 5% micro silica were used.
RECYCLING OF AGGREGATE CONCRETE MATERIALS
Development of cities is increasing at an alarming rate now a day. This development demands for a huge amount of building material. The stone aggregates being a major component of concrete are not locally available in the cities and hence acute shortage is faced by the construction industry. Further, due to demolition of old structures in cities the waste concrete is laying as it is without any use and with no specific dumping place. Thus it is required to recycling and reusing the waste material with any possible manner. In the present study recycled aggregates are used in the concrete and the effect of nano silica and micro silica on recycled aggregate concrete has been investigated. In the first series of tests natural aggregates are replaced by recycled aggregates in varying percentages i.e. 20%, 30%, 40% and 50%. In the second series of tests, cement was partially replaced by micro silica and nano silica by 5%, 8% and 10% and 1%, 2% and 3% respectively both in natural aggregate concrete and recycled aggregate concrete. Further, cement was replaced by both nano silica and micro silica ie. (1%, 2%) and (5%, 8%) respectively in concrete containing fresh aggregates as well as partial recycled aggregates. The results obtained from the study showed that a maximum decrease of 18% was observed when 50% recycled aggregates are used. The addition of both nano silica and micro silica improved the compressive strength at early ages in natural as well as recycled aggregate concrete. The maximum compressive strength was observed in concrete containing 2% Nano silica & 5% Micro silica. Maximum compressive strength for nano silica and micro silica was observed at 2% and 8% respectively. Increase in about 30% of strength was observed when combinations of 1% nano silica with 8% micro silica& 2% nano silica with 5% micro silica were used.
RECYCLING OF AGGREGATE CONCRETE MATERIALS
DUBEY OM PRAKASH (Autor:in) / KHATANA TRIPTI (Autor:in) / CHAUDHARY JITENDRA (Autor:in) / PUNDIR TUSHAR (Autor:in) / BHANDARI SAMBRIDHI (Autor:in) / KUMAR SOURAV (Autor:in) / DHAMI RAMESH SINGH (Autor:in) / SANGMA ARANTXA (Autor:in) / MAHARA SURAJ (Autor:in)
28.04.2022
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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