Foam concrete, also known as aircrete, foamed concrete, foamcrete, cellular lightweight concrete or reduced density concrete, is defined as a cement based slurry, with a minimum of 20% (per volume) foam entrained into the plastic mortar.
This paper presents the first results of an ongoing experimental campaign focused on foamed concrete. The dependence of the compressive strength upon dry density, water content, curing conditions, cement type and, most importantly, foaming agents employed in the cement paste is here investigated.
Abstract—This paper describes an experimental study of an enhancement of pre-formed foamed concrete, 1300-1900 kg/m3, by utilising two types of additives, silica fume and fly ash, to partially replace Portland cement and fine sand.
Effect of additives on cement paste microstructure and air void structure was investigated. Evidence was found for the effect of both paste microstructure and void structure on strength. ... Foamed concrete Mineral additives Superplasticizer Pore structure Strength. a b s t r a c t.
Silicone additives to a concrete All constructions of silicate materials - concrete, expanded clay, foam concrete, brick, cinder block, cement and cement-sand plaster, artificial stone, drywall, roofing slate, tiles are constantly exposed to the negative influence of various atmospheric factors leading to a reduction in their service life ...
Abstract. A study has been undertaken to investigate the effect of different additives on the strength foamed concrete by characterising air-void size and shape parameters and identifying the influence of these parameters and changes to cement paste microstructure on strength.
Superplasticizer Polymeric Additives Used in Concrete DANIELA FIAT1*, MIRELA LAZAR 1, VICTORIA BACIU, ... By changing the functional units in the chain, the effects of additives in concrete can be modified . They are mainly used for the flow control and slump loss in the ready
Foam concrete with modifying mineral and organic additives have higher plastic strength by early structure formation, more homogeneous structure, compressive and bending rigidity and lower thermal conductivity in comparison with conventional foam concrete and can be recommended for use in the
Haul Time Effects on Unmodified, Foamed, and Additive-Modified Binders Used in Hot-Mix Asphalt ... binders with no additive, foamed asphalt binders, and asphalt binders with a chemical additive. Plant-mixed asphalt was used for the inves- ... WMA is defined as asphalt concrete
Concrete production is the process of mixing together the various ingredients—water, aggregate, cement, and any additives—to produce concrete. Concrete production is time-sensitive. Once the ingredients are mixed, workers must put the concrete in place before it hardens.
Influence of the additives TMT-600 and TMT-600-k on the foam concrete porosity. The results of the data analysis showed that the total porosity of the foam concrete modified by peat additives TMT-600 and TMT-600-k increased up to 12 %, compared to basic samples without
other additives into slurry of ground high silica sand, cement or lime and water , , as shown in Fig. 1. ... foamed concrete are critically dependent upon the quality of the foam. Foam agent can be classified according to ... This large steam-heated vessel is in effect a large pressure
This paper describes a study done to investigate the effect of additives on the air-void structure of foamed concrete by characterising size and shape parameters and identifying the influence of ...
Admixtures are added to concrete batch immediately before or during mixing concrete. Concrete admixtures can improve concrete quality, manageability, acceleration or retardation of setting time among other properties that could be …
This paper reports the results of experimental works that have been performed to investigate the mechanical and thermal properties of lightweight foamed concrete (LFC) with different additives.
Investigation on pozzolanic effect of mineral additives in cement and concrete by specific strength index. Author links open overlay panel Xincheng Pu a. Show more. ... specific strength of unit cement in concrete, specific strength of pozzolanic effect in cement or concrete, specific strength ratio, and contribution rate of pozzolanic effect ...
Admixtures are those ingredients in concrete other than portland cement, water, and aggre- ... Chapter 6 Admixtures for Concrete Table 6-1. Concrete Admixtures by Classification (Continued) ... the effects of water reducers on concrete properties. MID-RANGE WATER REDUCING ADMIXTURES.
Foam Concrete -Materials, Properties, Advantages and Production Methods Foam concrete is a type of lightweight concrete that is manufactured from cement, sand or fly ash, water, and the foam. Foam concrete is in the form of foamed grout or foamed …
Abstract. The titled high performance foamed concrete was developed from Portland cement, ultra fine granulated blast-furnace slag, pulverized fly ash and condensed silica fume by …
This paper describes a study done to investigate the effect of additives on the air-void structure of foamed concrete by characterising size and shape parameters and identifying the influence of these parameters on strength. Nine different mixes were
This paper presents a review of the properties of fresh concrete including workability, heat of ... It has been reported that if a typical dosage of SF of 8–10% by weight of cement is added in concrete, then its effect is between 50,000 and 100,000 ... There are two properties that comprise the activity of additives: chemical activity ...
results of a study carried out to investigate the effects of Metakaolin on strength of concrete are presented. The referral concrete M30 ... Ingredients Mixes Control Metakaolin 5% Metakaolin 10% Metakaolin 15% Metakaolin 20% C M 1 M 2 M 3 M 4 Cement (kg/m3) 437.78 415.89 394 372.11 350.22
EFFECT OF RUBBER POWDER PARTICLE ON THE STRENGTH OF FOAMED CONCRETE *Siti Radziah Abdullah. 1, Akhtar Izzaty Riwayat. 1, A.S.M.Abdul Awal. 1. ... additive in foam concrete. 2. EXPERIMENTAL DETAILS . The cement used in producing the foamed concrete was ordinary Portland cement (OPC). Pre -
Abstract. The titled high performance foamed concrete was developed from Portland cement, ultra fine granulated blast-furnace slag, pulverized fly ash and condensed silica fume by means of pre-foaming process.
This paper presents an investigation on lightweight foamed concrete (LFC) with different type of additives. LFC with 600, 1000 and 1400 kg/m3 density were cast and tested. Fly ash, lime and polypropylene fibre were used on each density with different percentages. All the additives effects were compared with normal LFC as control mix. Mechanical …
Flowing concrete is a highly fluid but workable concrete that can be placed with little or no vibration or compaction. The effect of superplasticizers lasts only 30 to 60 minutes, depending on the brand and dosage rate, and is followed by a rapid loss in workability.
The properties of other materials may also be modified when blended with plasticizers including concrete, clays, and related products. ... Plasticizers for plastics are additives, ... use of too much plasticizer may result in a retarding effect.
The article presents results of studies of structural heat insulating foam concrete with porous mineral and organic additives. In order to improve the competitive ability of natural hardening foam.