ABSTRACT Concrete may develop micro cracks and contains pores, both of which are extremely undesirable since they allow water and other harmful chemicals to enter the material easily. The Bacterial Self Compacting (BSCC), which continually deposits calcite in concrete, is one efficient method for sealing fissures. Microbiologically Induced Calcite Precipitation, or MICP, is the term used to describe this occurrence. The urease enzyme assists bacteria in the deposition of calcium carbonate (CaCO3). Because it is bio-based, environmentally safe, and long-lasting, the bacterial remediation method outperforms other methods. The high pH of concrete and the mechanical forces that occur during mixing require bacteria to provide resistance. The MICP-induced concrete has become a significant topic of study for high performance building. The utilization of bacteria for the production of bacterial SCC has received very little attention in India, and the durability properties of these mixtures have also received inadequate attention. Bacterial Self-Compacting Concrete (BSCC) of M60 grade, with bacteria as admixture along with flyash and silica fume. This research is to know about the workability, mechanical properties, durability and micro analysis of bacterial self-compacting concrete. The test results shows the bacteria of size 106 shows the best results in bacterial self-compacting concrete. pores easily BSCC, BSCC , fissures Precipitation MICP occurrence CaCO3. CaCO3 CaCO . (CaCO3) biobased, biobased bio based, based bio-based safe longlasting, longlasting long lasting, lasting long-lasting methods resistance MICPinduced induced building India SelfCompacting (BSCC M M6 grade fume workability selfcompacting self compacting 10 (CaCO3 1 (CaCO

Abstract Composite CST with lightweight concrete as infill for three light concrete grades such as M20 to M40 with different loading conditions. The optimal solutions as standard concrete and natural aggregate, waste material from the quarry are collected and added for replacement of natural sand in construction. While causing the experiment, cost and time will be extended, and the structural lightweight concrete mixes attain these can be designed. In present study, lightweight concrete materials are used to prepare the concrete mix with different proportion by replacement of quarry dust instead of sand and analysed the mechanical and other properties using machine learning techniques. The materials used in the present study were cured at the interval of 7 and 28 days, to train the Neural Network (NN) with Hidden layer neuron (HLN) maximization process Modified Krill Herd Optimization (MKHO) model used and these are initially considered. All the ideal results in the planned system demonstrate how the achieved mistake values among the different trail mixes and the predicted value of various mix proportion are obtained as zero and equivalent to zero. Based on the present study results, optimal model exactness is around 98.78% with other machine learning models. M M2 M4 conditions aggregate construction experiment extended designed techniques 2 days NN (NN HLN (HLN MKHO (MKHO considered 9878 98 78 98.78 models 987 9 98.7 98.

ABSTRACT Geopolymer concrete is produced with use of byproduct are the environmentally friendly and positive impact for workable growth. This research, by products such as fly ash and ground granulated blast furnace slag (GGBS) were utilized as binding material in geopolymer concrete. The main aim of the present study is to replace the coarse aggregate by coconut shell and evaluate the mechanical and durability properties of the concrete by varying the 10%, 20%, 30%, 40% and 50%. The study results indicates that, 40% use of coconut shell shows the high strength behaviour than other variations. In order to evaluate the durability properties, water absorption, rate of absorption, acid resistance and sulphate resistance tests was performed. The study results represented that, fly ash and GGBS shows the strong binding cementitious material while using coconut shell as coarse aggregate. the formation of calcium aluminium silicate hydrate(C-A-S-H) gel and siloxane bonds with coconut shell reduce the acid attack and water absorption capacity of the geopolymer concrete. growth research (GGBS 10 10% 20 20% 30 30% 40 50 50% that variations performed hydrateCASH hydrate C A S H hydrate(C-A-S-H 1 2 3 4 5

ABSTRACT The development of lightweight geopolymer concrete is the main goal of this research work, and the outcomes were evaluated in comparison to the control mix. In this work, geopolymer concrete was produced using fly ash as a binder, synthetic sand as M-sand as fine aggregate, and coconut shell as well as palm shell ash for coarse aggregate. For the purpose of selecting a mix proportion via trial mixes, an initial investigation was conducted. The quantity among binder, fine and coarse aggregate, sodium hydroxide molarity, sodium silicate: sodium hydroxide ratio, the alkaline binder ratio is some of the significant variables taken into account in the current study. Investigation of the effects of various factors on the engineering characteristics of geopolymer concrete. The trial mixes were utilized to evaluate the characteristics for geopolymer concrete with a ratio of 1: 2.36 :1.02 and a Molarity of 16 with binder ratio 0.6 The key findings of this investigation is to that the coconut shell waste and palm shell can be replaced instead of fine aggregate. In-depth research was done on the mechanical behavior with geopolymer concrete, such as the mechanical and durability characteristics with control mix. work Msand M aggregate conducted molarity silicate study 1 236 2 36 2.3 1.02 102 02 :1.0 06 0 6 0. Indepth depth 23 3 2. 1.0 10 :1. 1. :1 :

ABSTRACT The principal objective of this study is to investigate the flexural characteristics of ferrocement slabs incorporating geopolymer and to evaluate the most effective composition. Using Carbon Fiber Reinforced Polymer (CFRP) wounded wire mesh, characteristics of Nano silica based geopolymer incorporated ferrocement slab elements have been experimentally examined in detail at both room temperature curing and hot curing at 60 °C. Cement can be replaced in mortar by fly ash, saving on the need for expensive disposal land. GGBS is applied in addition to fly ash to increase strength in room temperature curing. Geopolymer mortar of 1:2 is used for the ferrocement slab. This binder is made up of 25% sodium silicate, 10% sodium hydroxide, and 65% fly ash. By changing the fly ash's weight with GGBS, the percentage was changed by 20%, 40%, 60%, 80%, and 100%. 80% percent GGBS addition is deemed ideal, even though the compressive test results show that the best strength was achieved with 100% GGBS. Nano silica added as 0.5%, 1%, 1.5%, and 2% by weight of binder further enhances the performance of the chosen blend. The strength of the geopolymer mortar increased by about 240% when 1.5% nano silica and 80% GGBS were added. composition CFRP (CFRP mesh 6 C °C land 12 1 2 1: 25 silicate 10 hydroxide 65 ash&aposs ashaposs ash&apos s apos 20 20% 40 40% 60% 80 100 ideal 05 0 5 0.5% 1% 15 blend 240 1.5 aposs ashapos 4 8 0.5 24 1. 0.