• СʪѨӰԺ,һ֦Ҹ,

ڣ2019-11-16  Դwww.beriultimate4u.net

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ڻIa^вΆǏC10C60@11ϱȣСʪѨӰԺ,һ֦Ҹ,]NأϱȌ_ϰق磬ȵȼC30ĻϱC30C30·C30@טC30weC30б桢C30ʯȶ_6ϣټϝM㿹B܌ȲͬҪC30ټϸ͚׃{ϱȾ͸࣬⣬߀ҪԭϵĄӑB׃{ϱȣκҼNԭϵĮ׃ʹƂĻܮa^󲨄ӣ^ҼlȫWhen making concrete mix design, therefore, to consider not only consider the factor of raw materials, consider the structure characteristics of concrete engineering, construction technology, temperature, climate factors such as transport distance, on as many as 10 related factors, including the complexity of only one perennial directly engaged in production line of feld technical personnel. Concrete mix proportion design is also the introduction is not difficult, really understand the characteristics of concrete mix proportion design, do in any complex situation, both to ensure the quality, and can reduce the cost, is really a not easy thing.

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  • Strength although the strength of concrete is no longer the only index to measure the quality of concrete, strength is an important guarantee for the work of concrete structures. There are many factors affecting the strength of concrete, mainly the following. (1) gelling material strength and gelation material strength of high and low water/cement ratio and cement properties, varieties of mineral admixtures and mixing ratio has good correlation, in the case of water-binder ratio set, gel strength of materials can be by changing the dosage of cement and mineral admixtures to adjust, gelling strength of materials directly decide the strength of concrete; Under the condition that the use proportion of cementitious materials remains unchanged, i.e. the strength of cementitious materials remains unchanged, the concrete strength can be changed by changing the water-cement ratio. The smaller the water-cement ratio is, the higher the concrete strength will be. Therefore, in the mix design, the adjustment of the concrete strength of a specific age (generally refers to 28d) can be achieved by changing the water-cement ratio or changing the strength of cementing material (that is, changing the ratio of cement and admixture).

    2ϵķN ˮʯcϵճYȡQ춹ϵırҼfϱ⻬СʪѨӰԺ,һ֦Ҹ,cճYȲҲƫ͡෴ϱֲڿˮʯc֮gճYȣ߻ȡĹϵırˮzȺzͬrʹʯĻҼʯďȡʯAȱeСˮ^٣ټʯ⻬gĦСʯǣȱe󣬱ˮ^࣬ټʯֲڣgĦҼfˮ׃rʯ̮Ⱥ͔UչСʯ̮Ⱥ͔UչȣҲf̮ͬr£ʯˮʯˮˣʹʯƻrƻԵăcڱֹԲ׃r£ˮˮzȣ폛aճYc⣬xϕr߀]

     

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