Question

paste t 1.5 refer, artificial sand or natural river sand, to obtain a fresh concrete Which kind of sand we p workability under the same other situations? d is used, the cement content can be . If the natural while proportioning the - nerete with the same strength grade. two typical pozzolanic materials generally used in concrete, and unsoundness of cement was mainly caused by too much f and free in the clinker. Incorporation too much gypsum in the cement also causes the 1.7 The unsoundness of cement. 1.8 While calculating the concrete mis, the can be evaluated based on compressive strength grade of the concrete, and the slump of the fresh concrete content. mainly depends on the strength of coarse aggregate can be evaluated by using crushing value, the higher this the strength of the coarse aggregate. Generally, the recycled value is, the e aggregate produced from waste concrete showed a crushing value. etration test can be used to measure asphalt cement consisteney. In this test, the in units of mm, is recorded and reported as the penetration dep

Answer 1

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